Method and device for controlling transmissions in communication system

FIELD: communication systems.

SUBSTANCE: each cell in communication system can function in accordance to a set of coefficients of decrease of power of transmission, providing for required power level for greater percentage of clients with concurrent decrease of interference level. Operation of cell phone cells is organized with use of adaptive repeated use algorithm, by means of which a possibility is provided to perform effective distribution and redistribution of system resources with consideration of changes, occurring in system.

EFFECT: higher speed of operation, higher efficiency.

24 cl, 17 dwg, 15 tbl

 

The technical field to which the invention relates.

The present invention relates to data transmission. In particular, the present invention relates to a new and improved method and control device for transmission in the communication system, which ensure increased efficiency and improved performance.

The level of technology

Wireless communication systems are becoming more common as communication systems, ensure the implementation of a wide variety of applications. One such communication system is a system of multiple access, code-division multiplexing (mdcr) (CDMA), which facilitates communication between a large number of subscribers of the system. Other wireless communication systems are, including system multiple access with time division multiplexing (mdvr) and system multiple access frequency division multiple access (FDMA equipment). Widely used in Europe, the global System for Mobile communications (GSM) (GSM) is a communication system based on MDR.

The modulation method mdcr with the division of the spectrum has significant advantages over other methods of modulation for communication systems, multiple access. Using methods mdcr in the communication system with multiple access are disclosed in U.S. patent No. 4901307 of 13 February 1990, the cat is who is called "COMMUNICATION SYSTEM MULTIPLE ACCESS WITH distributed SPECTRUM USING SATELLITE OR TERRESTRIAL REPEATERS" ("SPREAD SPECTRUM MULTIPLE ACCESS COMMUNICATION SYSTEM USING SATELLITE OR TERRESTRIAL REPEATERS"), and in U.S. patent No. 5103459 April 7, 1992, which is entitled "SYSTEM AND METHOD of GENERATING SIGNALS of a GIVEN SHAPE IN the CELLULAR TELEPHONE SYSTEM mdcr" ("SYSTEM AND METHOD FOR GENERATING WAVEFORMS IN A CDMA CELLULAR TELEPHONE SYSTEM"), the rights to both of which transferred to the patent holder of the present invention.

System mdcr usually performed in such a way that they meet one or more standards mdcr. Examples of such standards mdcr are, including the standards of the Association of communications industry (TIA)/Association of electronic industries of America (EIA), International standards (IS), 1995, entitled "TIA/EIA/IS-95-A compatibility of the mobile station and a base station for dual-mode broadband cellular communication with the division of the spectrum" ("TIA/EIA/IS-95-A Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System") and TIA/EIA/IS-95-B compatibility of the mobile station and a base station for dual-mode broadband cellular communication with the division of the spectrum" ("TIA/EIA/IS-95-B Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System") (the combination of which is called below the standard IS-95), standards Association of communications industry (TIA)/Association of electronic industries of America (EIA), International standards (IS) 1998 TIA/EIA/IS-98-A, - and, having the name "Standard recommended minimum requirement of the requirements to the operating characteristics of the dual mode mobile stations with the division of the spectrum for cellular systems and personal communication systems (SPS)" ("Recommended Minimum Performance Standard for Dual-Mode Spread Spectrum Cellular and PCS Mobile Stations"), and "Variant of the standard system of radiotelephone communication mdcr-2000, submitted by the Radiocommunication sector of the International telecommunication Union (ITU)" ("The cdma2000 ITU-R RTT Candidate Submission") (hereinafter referred to as the international standard IS-2000). Constantly proposed and adopted new standards for their practical use.

In the wireless communication system, the communication between subscribers is performed via one or more base stations. The first caller on the location of the first target device (for example, remote station), communicates with the second caller on the location of the second target device, by transmitting data on uplink communication base station. The base station receives the data and can send the data to another base station. Then transfer data downlink from the base station to the second target device. The term "downward link" refers to transmission from the base station in the target device, and the term "upward communication refers to the transmission from the target device to the base station. In systems according to the standard IS-95 for uplink communication and downlink allocate different frequency.

In the wireless communication system, each source transmitted signal is La acts as a source of possible interference to receivers, available in the system. To combat interference arising in the terminal devices and the base stations, as well as to maintain the required level of performance in conventional systems mdvr FDMA equipment and implement ways to reuse frequencies, in accordance with which each cell of the cellular communication use, respectively, not all time intervals and not all frequency channels. For example, in the system mdvr can be used schema re-use with 7 cells, cellular communication, in which the total width W of the working bandwidth is divided into seven equal frequency bands (that is, V=W/7), and for each of these seven cells cellular allocate one of the frequency ranges. Thus, the same frequency reuse in every seventh cell of the cellular communication. By reusing frequencies reduce levels of interchannel interference in each cell of the cellular communication, compared to the option in which for each cell cellular allocate the same frequency band. However, the presence of schema reuse, consisting of more than one cell of the cellular communication (e.g., schema re-use 7 cells for conventional systems mdvr), leads to inefficient use of available resources, as for every the th cell cellular allocate only part of the entire operating bandwidth, she can use.

System mdcr can function in the presence of schema reuse, consisting of one cell of the cellular communication (i.e. in adjacent cells of the cellular communication may be used in the same frequency range). However, the system mdcr designed to transmit speech data with a low data rate (e.g., with a speed of 32 kilobits per second (kbps) or less). Through the use of code division with the division of the spectrum distribute data having a low transmission rate, wide bandwidth (equal to, for example, 1,2288 MHz). Due to the large coefficient explode on the spectrum of the reception signal, the address explode in range (compression) conversion into coherent signal processing can be performed at low or negative value of the ratio of the signal level of the carrier to the total noise and interference (N/a) (C/I). System mdcr not designed for data transmission with high data rates.

Given the growing demand of wireless communication, it is desirable to provide a method and device by which it may be secured transfer of data with high data rates and made more efficient use of available p the resources to obtain higher efficiency and better performance.

The INVENTION

In the present invention proposed methods of controlling transmission in communication systems through which provide greater efficiency and improved performance. Typically, the communication system must meet specific criteria in relation to the service area through which usually determine the specified minimum average speed transmission of binary data, supported within a specified percentage (equal to, for example, 99.99%of the time and/or for a specific percentage (equal to, for example, 99.99%of subscribers in the case when the received signal exceeds a specific threshold value N/P. On the requirements of the service area, often affects a small percentage of subscribers in adverse conditions, for which a small number of sources of interference creates excessive interference.

The invention taken into account this fact, and suggested various ways in which an attempt to ensure that the relevant requirements in respect of the service area for subscribers located in adverse conditions, when and where possible. According to certain features of the invention, each cell of the cellular communication system may be designed in such a way as to ensure the process of its functioning in accordance with the set of coefficients decrease the transmission power, through which is determined by reducing the maximum transmit power levels for those channels that correspond to these factors decrease the transmission power. By defined factors decrease the transmission power provide the required power level for a large part of the subscribers while reducing noise.

According to other features of the invention functioning of cells cellular ensure by means of an adaptive algorithm reuse, which allows efficient allocation and reallocation (re-distribution) system resource for cell cellular whereby reflect changes in the communication system. In the initial state set, the algorithm re-use and distribute resources for the cells of the cellular communication. When working register changes in operating conditions in the system, and where necessary re-assignment algorithm reuse on the basis of recorded changes. For example, you may be logged modes of load cells, cellular, and on the basis of the data about the registered load modes can be carried out a redistribution of resources and/or re-assignment algorithm reuse.

According to some of the other features of the present invention it is suggested ways to effectively establish a sequence of data transfers and the provision of channels to subscribers. Prioritization of the transmission of data may be performed based on priorities subscribers, certain criteria of fairness, resources, requirements of the system, and other factors. Provision of available channels for data transmission to subscribers carry out on the basis of several algorithms distribution channels. Also measure the performance of channels that can be used to determine the priorities of customers and distribution channels. A more detailed description of these various features of the present invention is given below.

As a specific variant of the invention, a method for transmission control in the communication system. According to this method, first perform the separation of a commercially available system resources across multiple channels. Determine one or more parameters of a communication system and, based on system parameters, obtained in the result of the operation definition, specify a set of coefficients decrease the transmission power for the channels. Each channel set in accordance proper reduction ratio power transmission, the receiving mn the treatment in the range from zero to one, through which indicate a decrease in the transmission power relative to its maximum level. Data transfer is performed with the power levels that are set on the basis of coefficients decrease the transmission power. The reduction ratio power transmission equal to one, whereby display the full transmit power, typically assign one or more channels, and other channels usually correspond to the coefficients decrease the transmission power smaller than the unit.

The available system resources can be distributed over multiple time intervals for which perform multiplexing time division (MBP) (TDM), across multiple channels, for which perform multiplexing frequency division (CDM) (FDM), or on multiple channels multiple access code division (mdcr). In this case, the channels correspond to certain sets of time intervals MBP, CDM channels, channels mdcr or their combination.

Factors decrease the transmission power can be determined based on the relationship of the signal level of the carrier to the total noise and interference (N/a) (N/a)characterizing the receiving device in the communication system, the values of the probability of occurrence of the corresponding load, the required probability values n the disruption of communication, given values of the parameters (i.e. the desired relationship N/a), or based on other characteristics or parameters of the system.

Regulation of the reduction ratio power transmission for each channel can be carried out on the basis of estimated values of the desired power level for the channel. Estimated value of the required transmit power can be obtained on the basis of the calculated or measured values of the ratio N/N, the frequency of erased frames (EIC) (FER), the probability of breaking the link, and other parameters. Regulation factors decrease the transmit power can also be implemented on the basis of changes occurring in the communication system (for example, changes in the characteristics of the subscriber, load requirements against N/a etc). To reduce the interference in the respective channels can be accomplished by reduction of one or more coefficients decrease the transmit power (or perhaps setting them equal to zero) during the selected time intervals of a given duration. For a channel with degraded performance, with extremely high frequency erase frames (EIC) and/or the probability of breaking the link, the reduction ratio power transmission can also be set equal to zero.

For a system containing many cells of the cellular communication,the set of coefficients decrease the transmission power for each cell in the cellular communication can be defined, based on the given cell of the cellular communication. To ensure noise reduction circuit re-use perform so that the coefficients decrease the transmit power for a particular cell of the cellular communication were located approximately in a staggered manner with respect to the coefficients decrease the transmission power for the neighboring cells of cell communication. To enable maintenance of a particular subscriber, the disadvantaged, the cell provider may submit a request in another cell (in different cells) cellular communication to a temporary reduction in transmit power from them or cessation of transmission. In that case, if the cell cellular receives multiple requests to reduce power, then the power in the cell of the cellular communication may be reduced by the greater of the requested values. Power reduction can be done in various ways (for example, a stepped manner with a given value of speed changes by a specified amount, etc. in certain time intervals). Also you can change or adjustment factors decrease the transmission power assigned to the cells of the cellular communication, to reduce inter-channel interference. For each cell in the cellular communication can also be specified intervals, in which the authorized transfer of data. Moreover, the coefficients decrease the transmission power can be assigned to the sectors of the cell, cellular, divided into sectors (or any session transfer in a specific geographic area).

In another specific embodiment of the invention, a method for managing multiple transmitting devices in the wireless communication system. According to this method, first perform the separation of a commercially available system resources across multiple channels. Then, to define the schema reuse, which contains several cells of the cellular communication. For each cell in the cellular communication, which is part of the schema reuse, determine one or more parameters, and, based on the parameters of the cell cell communication resulting from operations determine, allocate a set of channels to each cell in the cellular communication, which is part of the schema reuse. Determination of the parameters of the cell cellular carried out continuously, and can be made the allocation of new sets of channels to display changes occurring in the communication system.

For each cell in the cellular communication in the schema reuse typically allocate a set of channels to transmit with full power level and, in addition, it can be allocated one or more channels is La transmit with lower power levels. Distribution channels are usually carried out depending on several factors, for example, from the number of available channels, the number of cells of the cellular communication in the scheme of re-use, characteristics of the subscriber, the load cells cellular and other factors. In some embodiments, the implementation of the cell provider may transmit an unselected channel if necessary, provide additional bandwidth. Select the unselected channel can be implemented based on, for example, estimated performance, the likelihood of its employment in other cells of the cellular communication, risk communication, etc. Can be performed reserving one or more channels to perform transmission through a particular cell of the cellular communication during a specific period of time.

In yet another specific embodiment of the invention, a method for securing transmission data to multiple receiving devices included in the communication system. According to this method perform an update of the first set of parameters used to establish the priority of the transmission data, carry out the assignment of priorities for data transmission to subscribers, and their distribution over the available channels based on current priorities. Perform Obnovlenie the second set of parameters, used for transmission, and transmitting the transmission data to the receiving device is carried out via dedicated channels using the updated second set of parameters. Can be measured characteristics (e.g., NOF) data, and on the basis of measured parameters can be performed for the proper regulation of transmit power levels and/or data transmission speeds for data transfers.

The first set of parameters may include, for example, the values of the probability of busy channel, the probability of the corresponding load values of relationship N/a for receiving devices or factors decrease the transmission power, or their combination. To perform the operation of setting priorities can be carried out calculation of the characteristics of the available channels for each of the receiving devices using the updated first set of parameters. The characteristics of the channel may depend on the aggregate (for example, potentially feasible or effective) throughput of receiving devices, the values of the probability of breaking the link, the expected values of the ratio N/P or any other criteria and, in addition, they can be displayed the expected interference from sources of interference.

Based on the calculated characteristics Kahn the La exercise to prioritize the transmission of data, and changing priorities can be performed based on, for example, latency in the transmission. The distribution of transmission data according to the available channels may be performed based on the assigned priorities and the calculated characteristics of the channel. In some embodiments, the implementation of the allocation of available channels for data transmission perform consistently downward their priority, since the data having the highest priority. In another embodiment, the distribution of available channels for transmission of data consistently perform in the direction of decreasing load, since the transmission data creating the greatest load. In the distribution channels may also be an attempt to roughly equalize the data transfer rate for some data.

In yet another specific embodiment of the invention, a method for securing transmission data to multiple receiving devices included in the communication system through several channels. According to this method determines the set of coefficients decrease the transmit power for the channel, and by factors decrease the transmit power point decrease in the transmission power relative to its maximum level for channels. Distribute transmission given what's on the channels and determine the required transmit power levels for data transmission. Perform the adjustment coefficients decrease the transmission power in accordance with the required transmit power levels, and transfer of data transmission channels in accordance with the adjusted coefficients decrease the transmission power. Can be used various features of the above-described operations of determining and regulating factors decrease the transmission power, the triage data transmission, and distribution channels.

As another particular variant embodiment of the invention proposed by the transmitting device, which contains the system processing unit, one or more modulators and one or more antennas. The system processing unit receives the stream of input data, splitting it into multiple streams of channel data and processing flow channel data. Modulator (modulator) perform reception and modulation of the processed channel data streams to generate one or more modulated signals that contain multiple transmission of data intended for transmission on multiple channels in multiple receiving devices. Each channel set in accordance with a proper reduction ratio power transmission, which takes values in the range from zero to one, set the Mering decrease transmit power relative to its maximum level. Antenna (antenna) carry out reception and transmission of the modulated signal (modulated signal).

Factors decrease the transmission power for channels determine, based on various system parameters, such as characteristics of the relationship N/a or load present in the system. Modulator (modulator) can be performed in such a way that performs modulation by means of an orthogonal multiplexing frequency division (OMCR) (OFDM).

As another particular variant embodiment of the invention proposed by the receiving device, which contains one or more antennas, one or more demodulators and a processing unit. Antenna (antenna) perform reception and transmission of one or more modulated signals, generation and transmission of which were implemented by (1) dividing the input data stream into multiple streams of channel data; (2) processing and modulation channel data streams to generate one or more modulated signals containing multiple transmission of data intended for transmission over multiple channels, and (3) regulation of the power levels of the transmission data in accordance with the set of coefficients decrease the transmission power, which is set in accordance with these channels. The demodulator (demodulator) which serve for the reception and demodulation of the modulated signal (modulated signal) to generate one or more demodulated streams of characters, and the processing unit performs the reception and processing of the demodulated stream (demodulated streams of symbols to generate output data.

Also proposed various other embodiments of transmitting and receiving devices as described below. In addition, the following is a description of the various features, distinctive features and embodiments of the communication system.

BRIEF DESCRIPTION of DRAWINGS

Distinctive features, the nature and advantages of the present invention will become more apparent from the following detailed description when viewed in conjunction with the drawings in which the same numbers of positions in the various drawings are marked, respectively, the same nodes, and in which:

figure 1 shows a diagram of a communication system which provides support for multiple users, and which can be implemented, at least some of the features and embodiments of the invention;

figure 2 shows the cumulative distribution function (CDF) (CDF) values of the ratio N/a achieved in several maladaptive schemas reuse for a particular communication system;

figure 3 depicts the sequence of operations describing the overall operation of the communication system according to some versions done by the means of the invention;

figure 4 depicts the sequence of operations performed in a particular embodiment, the adaptive algorithm reuse according to the present invention;

figure 5 shows a diagram of the system consisting of 3 cells cellular, which can be used some of the options for implementing the adaptive algorithm reuse in accordance with the present invention;

figure 6 shows a diagram of a variant of the operation of the distribution and allocation of resources in the system, consisting of 3 cells, cellular communication, which is depicted in Figure 5;

7 shows the CDF of relationship N/a achieved in the scheme of re-use, single-cell cellular communication, in the case when the transmission of all cells operate at full power;

on Fig shows a diagram of a system consisting of 21 cell-cell communication, which uses an adaptive algorithm for re-use with 3 cells.

figure 9 depicts the sequence of operations for a variant implementation of the algorithm for the triage of transmission data;

figure 10 depicts the sequence of a variant implementation of the algorithm provide channels on demand;

figure 11 depicts the sequence of operations for the variant implemented the program algorithm capacity building of the channel;

on Fig shows graphs of the average values of the coefficient of reuse from the setpoint relations N/a for two different regimes of scattering;

on Figa depicts a graph of bandwidth for the subscriber from the relations N/a mode with multiple inputs and multiple outputs (MVPS) (MIMO) format 4×4 with four transmitting antennas and four receiving antennas;

on Figb shows the layout of the cells of the cellular communication used to simulate five different algorithms reuse;

on FIGU shows graphs of the probability that the average bandwidth for a subscriber falls below the value indicated on the X-axis, for each of the five algorithms reuse;

on Fig shows a diagram of a communication system MVPS, which can be implemented some of the features and embodiments of the present invention; and

on Fig depicts a block diagram of a variant of implementation of the processing unit and the modulator transmission system shown in Fig.

DETAILED DESCRIPTION of SPECIFIC embodiments of the INVENTION

Figure 1 shows a diagram of a system 100 connection that allows communication with multiple subscribers and which can be implemented, at least some of the features and embodiments of the invention. System 100 provides communication for multiple cells 102A-g cellular service each of which is implemented by a corresponding base station 104. Cell cellular ordered in such a way as to ensure the desired coverage area. The service area can be determined, for example, as an area in which to subscribers of target devices 106 may be provided to a particular level of service (UO) (GOS). The target device 106 located in the service area may be fixed (i.e. stationary) or mobile, and their maintenance is usually carried out by the main base station. The transmission of signals from other base stations and terminal devices can interfere with each active target device.

As shown in figure 1, multiple target devices 106 are dispersed throughout the system. At any given point in time each target device 106 communicates on downlink and uplink communication, at least one, and possibly multiple base stations 104 that depends, for example, from being used if the mode is "soft transfer service", or whether the target device and whether it operates in such a way that accomplishes the (simultaneous or sequential) is Riem multiple transmitted signals from multiple base stations. The term "downward link" refers to transmission from the base station in the target device, and the term "upward communication" refers to transmission from the target device to the base station.

Figure 1 is a base station a transmits data to the target device a and 106 K in downlink, the base station b transmits data to the target device b and 106 K, the base station b transmits data to the target device V, etc. In figure 1 by the solid line arrow labeled data transmission from the base station in the target device. A dashed line with an arrow denotes that the target device receives the pilot signal, but the data transmission from the base station does not perform. To simplify the drawing, the process of communication upward communication in figure 1 is not shown.

The system 100 can be made on the basis of the communication system disclosed in application for U.S. patent No. 09/532492 from March 22, 2000, which is entitled "high-efficiency, HIGH-performance COMMUNICATION SYSTEM using a MODULATION ON NUMEROUS CARRIER" ("HIGH EFFICIENCY, HIGH PERFORMANCE COMMUNICATIONS SYSTEM EMPLOYING MULTI-CARRIER MODULATION"), or based on the system disclosed in application for U.S. patent No. 08/963386, entitled "METHOD AND apparatus high-SPEED PACKET DATA" ("METHOD AND APPARATUS FOR HIGH RATE PACKET DATA TRANSMISION"), right on both of which transferred to the patent holder of the present invention. System 100 can also be made in the form of system mdcr that meets the requirements of one or more standards mdcr, for example, standard IS-95, standard mdcr-W (broadband system mdcr), other standards, or both.

In the system 100 implementing the joint use of shared resources, namely, the full width W of the working bandwidth, a large number of target devices. To obtain the desired operating characteristics for a particular target device it is necessary to reduce interference from other transmitted signals to an acceptable level. In addition, to ensure reliable transmission of high data rates for a given operating frequency band you want when the system is the ratio of the signal level of the carrier to the total noise and interference (N/a) (C/I) did not fall below a specific value. Reducing noise and ensuring the required value of relationship N/a usually carried out by separation of all available resources into parts, each of which is allocated for a particular cell provider.

For example, the overall width W of the working frequency band may be divided into N equal frequency bands (that is, V=W/N), and for each cell in the cellular communication can be the the selected one of the N frequency bands. For more high efficiency spectral range periodically re-use of frequency bands. For schema re-use with 7 cells, cellular communication, for example, that depicted in figure 1, for the cell 102A provider may be allocated first bandwidth for the cell b provider may be allocated to the second frequency band, etc.

The communication system is usually performed in such a way that it meets a number of requirements for the system, which may contain, for example, requirements to quality of service (QoS) (QOS), service and performance. Quality of service is typically characterized by the fact that each terminal device located in the service area, can maintain the specified minimum average speed transmission of binary data over a given part of time. For example, the system can be presented requirements, to within 99.99% of the time provided the minimum average transmission rate of the binary data is equal to at least 1 Mbps (megabits per second) for any target device. Requirements for the service area, may mean that a given level of service was provided for a certain percentage (equal to,for example, 99%) of those target devices for which the levels of the received signals exceeds a specific threshold value of the ratio of N/P. And requirements for performance, can be defined by the minimum average speed transmission of binary data, the specific frequency of occurrence of erroneous bits (CPAB), specific frequency erased frames (EIC) or any other requirements. These requirements influence the allocation of available resources and the efficiency of the system.

Figure 2 shows the cumulative distribution function (CDF) of relationship N/a provided by multiple schemas reuse for a particular communication system. On the horizontal X-axis shows the ratio N/N, while the vertical axis shows the probability that the ratio N/P is achieved through a specific terminal device, less than the corresponding values plotted on the horizontal axis (that is, P(N/a<x)). As shown in figure 2, for any target device value of the ratio N/P is not actually attain the value worst than 0. Figure 2 also shows that in the scheme of re-use with a larger number of cells, the probability of large values of the ratio N/P increases (that is, P(H/P>x) for schema re-use with 7 cell offset is et R(N/P> x) for schema reuse, consisting of one cell provider).

IGF relationship N/a, depicted in figure 2, can be used as a parameter to describe the performance of the communication system. For example, suppose that in order to ensure the maintenance of minimum instantaneous bit rate of 1 Mbit/s, for the 99.99% of the time it is necessary that the ratio N/P were equal to at least 10 dB. In the case of reuse factor equal to one (i.e. reuse of the same channel is performed in each cell of the cellular communication), the probability that the desired performance will not be achieved (i.e. the probability of breaking the link), is approximately equal to 12%. Similarly, re-use in each of the third, fourth and seventh cells cellular correspond to the probabilities of breaking the link, equal, respectively, to 5.4%; 3.4% to 1.1%. Thus, in this example, in order to ensure the value of the ratio N/N is equal to 10 dB, for the 99.99% of the time for 99% of subscribers, reuse should be done at least every 7-th cell provider.

For data modulation before transmission can be used several algorithms modulation. Such algorithms module is tion are including M-point phase shift keying (M-FMN) (M-PSK), M-point quadrature amplitude modulation (M-KWAME) (M-QAM), and others. Values of efficiency spectral range, quantitative evaluation is done according to the number of bits transmitted per second in each Herzegovina bandwidth (bits / second/Hz), for some algorithms modulation, providing efficient use of the frequency bands listed in the second column of Table 1. In the third column of Table 1 shows the values of relationship N/a required for providing a specific frequency of occurrence of erroneous bits (for example, CPOB equal to 1%).

Table 1
The algorithm modulationThe efficiency of modulation (in bits / second/Hz)The value of the ratio N/N (in dB)required to ensure CPOB 1%
Dip phase shift keying (Dpmn)14,3
Quadrature phase shift keying (Kfmn)21,3
8-position FMN312,6
16-position KWAME414,3
32-position KWAME516,8
620,5

Through the use of cumulative distribution function of the achievable values of relationship N/a of Figure 2 and achievable efficiency modulation, depending on the value of relationship N/a whose values are listed in Table 1 can be determined as the average value of the utilization rate of the channel, Echannel(ECH), for each algorithm reuse in the form of a weighted sum of the values of efficiency modulation, in which the weighting factor is determined by the probability of achieving the desired relationship N/P. for Example, in the case when the system is used by all algorithms modulation, since Dfmn to 64-way KWAME any possibility of their application, the average utilization rate of the channel can be calculated as follows:

Echannel=1·P(4,3<N/a<7,3)

+2·P(7,3<N/a<12,6)

+3·P(12,6<N/a<14,3)

+4·P(14,3<N/a<16,8)

+5·P(16,8<N/a<20,5)

+6·P(20,5<N/a).

Average utilization of the channel for different reuse schemes (for example, single-cell, 3-cell, 5-cell and 7-cell cellular) shown in the second column of Table 2. In the third column of Table 2 also shows the average (i.e. total) of sacrificingly use spectral range, and their calculation is carried out by dividing the average utilization of the channel coefficients reuse. Table 2 shows that the average utilization of the channel increases with increasing coefficient of reuse. However, this increase utilization of the channel by increasing reuse factor more than compensates for the deterioration of the overall efficiency of the spectral range, due to the fact that the possibility of simultaneous use of each channel is provided only for part of the target devices. Thus, increasing the rate of re-use that reduce the overall efficiency of the spectral range.

Table 2
The ratio of reuse cell cellularThe average value of the ratio of channel use (bits per second channel)The average efficiency spectral range (bit / sec/Hz in cell provider)
14,44,4
35,181,73
4of 5.41,5
7of 5.750,82

Adaptive algorithms for re-use In the invention proposed adaptive algorithms reuse, which allow, to the extent possible, more effective sharing available system resources (i.e. spectrum) to ensure greater efficiency and fulfilment of requirements for the system. According to adaptive algorithms reuse of the present invention determine the plan reuse, and for each cell in the cellular communication initially allocate a portion of all available system resources. The resource allocation may be performed so that, if desired or if necessary, in each cell of the cellular communication can be simultaneously used a significant portion of all available resources. The original algorithm of resource allocation may be similar to the non-adaptive algorithm reuse, and may include, for example, a subset of the available channels, the set of channels together with the corresponding maximum allowable transmit power levels, or some other resource allocation algorithms, which are described below.

When there is low load on the system data flow abonents each cell in the cellular communication using the allocated resources. When you increase the load, or change system settings can be performed reallocation of system resources to ensure better compliance with the system operating mode. In some adaptive algorithms reuse in the cells of the cellular resource-constrained data transfer some of the subscribers located in their cells for cellular communication may be performed using the resources that were allocated to other cells of the cellular communication. In addition, as needed (for example, to provide the desired relationship N/a for subscribers located in adverse conditions) can be carried out temporary redistribution, suspension or discharge, or reduction of all or part of the resources allocated to a particular cell provider.

Thus, in the invention methods of dynamic and/or adaptive resource allocation on cells of the cellular and dynamic and/or adaptive resource allocation cells for cellular subscribers, through which comply with the requirements of the system, and achieve high efficiency. The existing possibility of adjustment and reallocation of resources allows you to get in the system according to the present invention such a degree the effect is vnesti and such high performance, which cannot be obtained in systems using conventional non-adaptive algorithms reuse without regulation. A more detailed description of the various aspects, features, embodiments and methods of the invention are given below.

The invention can be used for any communication systems, in which there is interference. For example, the invention can be used in wireless systems (e.g., cellular) communication, satellite communication systems, radio communication systems and in other systems in which frequency re-use can improve their performance. In particular, the invention is useful for increasing the efficiency of the spectral range in the communication system, multiple access from fixed terminal device, which is designed to provide high-speed data services.

The invention taken into account the fact that in the communication system, there is typically only a small fraction of subscribers in adverse conditions, and this fact is used to increase the degree of the average value of the coefficient of reuse and, hence ensuring high efficiency. In a conventional communication system, the ratio of N/P for a large share of subscribers of the system Rav is about or greater than a preset value, necessary to ensure the desired performance. (The set value is a specific value of the ratio N/P is required to ensure the desired performance, for example, the average data transfer rate when CPOB equal to 1%, or the probability of breaking the link, equal to 0.01%, or any other criterion.) To ensure high efficiency for these subscribers can be used schema with a reuse factor equal to one. For the part of the subscribers for which the value of the ratio N/P is lower than the set value, can be used some other algorithms reuse and/or some other ways in which to provide the desired operating characteristics. According to one feature of the present invention can be made dynamic and/or adaptive correction algorithms re-use based on several factors, for example, an existing workload, requirements for the system, etc.

Figure 3 shows a diagram of a sequence of operations, which in General demonstrated the various features of the communication system of the present invention. First, at operation 310 specify the algorithm re-use pose the STV method, a more detailed description of which is given below. The algorithm re-use covers a variety of aspects, for example, a particular schema reuse, the specific layout of cells of the cellular communication, in which re-use, the allocation of resources by the cells of the cellular communication, operating parameters, etc. Via an algorithm reuse form the basis of the functioning of the system. The system then operates in the normal mode and the operation 320 transmits data to subscribers in accordance with a specified algorithm reuse. During normal operation when the operation 330 perform the performance evaluation system. Evaluation of different parameters and aggregate the measured performance can be performed as described below.

Then at operation 340 determines whether the system performance is acceptable. In that case, if system performance is unacceptable, in the process of moving back to operation 310 and re-assignment algorithm reuse. Re-set algorithm reuse may contain change various operating parameters, and may even contain the selection operation of the other circuit p is repeated use and/or layout of cells cellular, in which re-use. For example, if there is excessive noise may be increased, the number of cells of the cellular communication used in the schema re-use (for example, 3 cells cell connection up to 7 cells cellular). Otherwise, if system performance is acceptable, then the system returns to operation 320 and continue to transmit data to the subscribers. During operation of system operation 310-340 form a continuous process.

Figure 4 shows a diagram of a sequence of operations for a specific variant implementation of the adaptive algorithm reuse according to the present invention. In one embodiment, the implementation of the evolution and adaptation of the algorithm reuse to changing operating conditions in the system perform during normal operation of the system. Thus, some of the operations depicted in Figure 4 correspond to the analogous operations of Figure 3.

First, at operation 410, determine one or more parameters characterizing a communication system, using information collected from the system. Memorizing this information can be implemented in the database 430 system. For example, it may be determined interference level subscribers in each cell of the cellular communication, and which may be determined characteristics of the interference as described below. Characterization of interference can be performed for each cell, cellular, and usually contains an operation for determining the average value of the interference levels for all subscribers in each cell of the cellular communication. Information used for determining interference characteristics may include, for example, IGF relationship N/a for the cell cellular matrix interference constraints for each subscriber served by each cell, cellular, etc. In each matrix interference constraints given the power levels of interference exceeding a specific threshold, which occurs at the subscriber from other cells of the cellular communication. As described below, can also be carried out collection and analysis of data about the probability of having a cell cellular transfer using existing channels. Can be made to periodically update the information used to determine characteristics, whereby to provide new cells and cellular subscribers and reflect any changes in the system.

Then at operation 412 set plan re-use, considering the characteristics of the system, as well as other constraints imposed on the system, and the results of its analysis. Plan reuse typically includes the operation of determining the size of Nrcluster re-use is based (i.e. the number of operations reuse) and the original layout of cells of the cellular communication for reuse by cluster reuse, resulting from the operation definition. For example, the cluster re-use may conform to the schema re-use with a single cell, with 3 cells, 7 cells or with 19 cells cellular communication. The choice of cluster re-use and patterns of the layout of cells of the cellular communication for reuse can be carried out on the basis of the data received at operation 410.

Then at operation 414 define additional system parameters and/or operating conditions. This operation typically contains the splitting operation of all available system resources on the channels, and, as described below, the channels correspond to a single time, frequency bands, or any other individual elements. The number of used channels can be obtained on the basis of plan reuse specified at operation 412. Then the available channels unite together, and each cell of the cellular produce a corresponding set of channels. These clusters can contain overlapping channels (i.e., a specific channel can belong to more than one set). A more detailed description of the operations division and allocation of resources below.

Other typical defined by the two parameters which are, including, for example, the interval of the triage, the set values of the operating parameters for the cells of the cellular communication system, the coefficients decrease the transmission power corresponding to the selected set of channels, the limit value of reduction ratio power transmission, the values of the step of regulating factors decrease the transmission power, and others. Through coefficients decrease the transmission power set value of the maximum attenuation of the transmit power levels for the channels. Settings and modes, a more detailed description below, like a set of operating rules that you must follow for the cells of the cellular communications in the normal operation mode.

Then at operation 416 perform a performance evaluation system for a given plan reuse. This evaluation may include, for example, the operation of determining the effective energy reserve a communication channel for subscribers of the system, the probabilities of breaking the link, bandwidth, and other criteria for evaluating the performance of the system. For example, can be calculated effective energy stores subscriber communication channel for each channel of each cell in the cellular communication. On the basis of calculated values of the effective energy C is a pass may be obtained estimate of the average throughput of the system, and throughput for individual subscribers.

After the operation of evaluating the performance of the system perform an operation 418, which determine the efficiency (i.e. characteristics) of a given plan reuse. In that case, if the performance of the system do not meet the aggregate requirements of the system, the process returns to operation 412, and repeat the task plan reuse. Operations 412-418 perform repeatedly up until the system will not achieve these goals.

In that case, if the performance of the system correspond to the requirements of the system, then perform an operation 420, which determines whether there was a change in the system. If any changes are absent, the process is complete. Otherwise, perform an operation 424, at which carry out the update system 430 base data on the new features of the system obtained at operation 410. Then perform an operation 410, where the re-characterization system, reflecting changes in the system. Below is a more detailed description of the steps depicted in Figure 4.

The process, depicted in figure 4, can be implemented is tulino periodically or whenever a change is detected in the system. For example, the process may be executed when the extension or change of the system, for example, adding new cells and cellular subscribers and delete or modify existing cells and cellular subscribers. This process allows you to adapt the system to changes in, for example, the distribution of subscribers, topology and topography.

The invention encompasses several features, including (1) the structure and adaptation of the algorithm reuse, (2) allocation of resources (i.e. channels) on cells of the cellular communication, (3) prioritization of the transmission of data to subscribers, (4) the provision of channels to subscribers, the distribution of which is made by cells of the cellular communication, (5) the parameters used in the distribution channels, etc. for a More detailed description of each of these features below.

Design options channels

According to the invention resource sharing cells and cellular subscribers can be implemented through several different algorithms multiplexing, including multiplexing time division (ISI), the multiplexing frequency division (CDM), method of multiple access, code-division multiplexing (mdcr) and the method of random access. Can also be used and other algori what we multiplexing, as well as their combination, which are within the scope of the patent claims of the present invention. The division of the available system resources on the part carried out using the selected algorithm (selected algorithms) multiplexing.

For algorithms based on the ISI, the transmission time is divided into cycles (for example, at time intervals, frames, or any other unit cells), and for each cell cellular allocate a number of time intervals. In each step of the cell to cell communication, which is allocated at this stage, you may select the entire operating bandwidth of the system to one or more subscribers. For algorithms based on the CDM, the entire operating frequency band can be divided into several frequency bands or sub-bands), and for each cell cellular distinguish several frequency bands. Cell cellular can make (continuous) data transmission to subscribers with use of the allocated frequency bands. For algorithms based on mdcr, the allocation of codes to subscribers may be implemented depending on the needs. For all algorithms multiplexing allocation of available resources is performed by method ensuring high efficiency.

Figure 5 shows a diagram of a system consisting of 3 cells, cellular communication, in which the use of ofany some of the options for implementing the adaptive algorithm reuse, proposed in the present invention. For simplicity, the following description of certain features and embodiments of the present invention described with reference to the system consisting of 3 cells cellular communication. However, assume that the specific details are given for illustrative purposes and do not limit the invention. Obviously, that can be implemented in alternative embodiments of the present invention, and variations and modifications described here features and embodiments, and all these modifications and alterations are within the scope of the patent claims of the present invention.

Figure 6 shows a diagram of a variant of implementation of the operations division and resource allocation for a system consisting of 3 cells cellular communication, which is shown in Figure 5. In this example, system resources are divided into 12 parts. The separation can be carried out in the time or frequency domain, or in their entirety. Thus, the horizontal axis may represent time or frequency that depends on the used method of multiplexing: MBP or CDM. For example, these 12 parts can be a 12 time intervals for which perform multiplexing by time division, in the case of the algorithm based on the ISI, and the 12 frequency bands in the case of the algorithm, based on the CDM. Each of these parts here also referred to as "channel".

For a system consisting of 3 cells cellular separated system resources then combined into three sets of channels, and for each cell initially allocate one of the sets of channels. Each set of channels contains some of all 12 available channels, which depends on the used algorithm reuse. For example, in the embodiment shown in Fig.6, for cell 1 cellular allocate channels 1 through 4, for cell 2 cellular allocate channels 5 through 8, and the cell 3 cell allocate communication channels from 9th through 12th. In some other embodiments, the implementation of each cell of the cellular communication may be selected corresponding set of channels that contains one or more channels allocated to other cells of the cellular communication. In these embodiments, the implementation of each cell of the cellular communication may be allocated a set of coefficients decrease the transmission power, which determines the maximum possible transmit power for the cell-cell communication on each channel. For all embodiments can also be made dynamic and/or adaptive change of dedicated channels based on, for example, operating conditions (e.g., system load).

At low values of load of each cell cellular allocates subscribers with the "best" selected channels. For the method of distribution channels, shown in Fig.6, the subscribers in the cell 1 cell communication, allocate channels 1 through 4, the subscribers in the cell 2 cellular allocate channels 5 through 8, and the subscribers in the cell 3 cell communication, allocate channels from 9th through 12th. In the case when the load in each cell of the cellular communication equal to the load from the four subscribers or less, inter-channel interference from adjacent cells of the cellular communication are missing, and the set values of the parameters can be provided for each subscriber. In the case when the load in any of the cells of the cellular communication exceeds the load from the four subscribers, this cell provider may allocate additional subscriber channel, which may not be "orthogonal" with respect to the channels of other cells of the cellular communication. Because each cell of the cellular communication load usually varies independently, there is a possibility that the selected non-orthogonal channel is not affected by any of the neighboring cells of the cellular communication. The probability of this situation (i.e. the probability of "non-conflict situation") depends on the load in each of the neighboring cells of the cellular communication.

According to some versions done by the means of the present invention, the subset of channels, available in a cell of the cellular communication may be equipped with any means of "protection". Protection can be provided, for example, by periodic backup set of channels for its exclusive use in a particular cell of the cellular communication. This method exclusive use may also be configured in such a way as to apply it only when necessary and only to the extent necessary to meet the needs of active subscribers in adverse conditions. Can be implemented by various means up secure channels of the neighboring cells of cell communication. For example, the cell-cell communication can be transferred to the list of secure channels in adjacent cells of the cellular communication. Then in adjacent cells of the cellular communication temporarily reduce the transmit power over a secure channel to a specific value or cease transmission on secure channels. The protection channel can be used for customer service, disadvantaged, for which there can be provided the proper ratio N/a due to the presence of excessive interference from the neighboring cells of the cellular communication. In these cases, the protection channel can be charged immediately after you are satisfied the needs of customers in blagopriyatnyh conditions.

According to some variants of implementation of the present invention in the cells of the cellular communication can be performed "lock" (i.e., the prevention of the transfer of some of their channels if the channel state deteriorates to an unacceptable level (for example, if NOF exceed a certain percentage or if the probability of breaking the link exceeds a certain threshold value). In each cell of the cellular communication can be performed measuring the operational characteristics of the channels and made self-locking poorly functioning channels until, until there is undeniable assurance that the state of the channel has improved and may be provided with a reliable connection.

Protection and blocking of the channel can be made dynamic and/or adaptive methods based on, for example, the operation mode of the cell provider.

Factors decrease the transmission power

According to one feature of the present invention to provide improvements in performance and efficiency can be realized restriction (i.e. decrease) the transmit power of the cell cellular communication in a certain way. For a particular cell of the cellular communication there is a possibility that some subscribers are less susceptible to interference from other cells cellular, h is m some other subscribers. By applying a scheme of reducing the transmission power, which mainly make use of this circumstance, can be implemented to increase system capacity and improve performance.

Reducing the transmit power can be applied in one or more selected channels in one or more selected time intervals or in one or more selected cells of the cellular communication, either in their entirety. As an additional or alternative option, the reduction in transmit power may be applied to the selected subscribers in the cell cellular. The decrease in the power transmission can be carried out by the operation of the cell of the cellular communication with a specific degree of reduction of the transmission power relative to the maximum power level by limiting the transmission power of a specific limit value of power or through a complete turn off power transmission from cell to cell communication. In one embodiment, the implementation of the reduction of the transmission power in each cell of the cellular communication performed based on the operating conditions existing in the cell of the cellular communication in such a way as to ensure the availability of desirable performance while limiting interference to subscribers located in al the other cells of the cellular communication.

Reduction algorithm for power transmission can be performed taking into account several parameters. For example, the reduction algorithm for power transmission can be performed in such a way as to take account of the characteristics of the subscribers, load, performance objectives, etc. reduction Algorithm for power transmission can also be designed in such a way as to allow for adjustments due to changes any of the parameters.

In a specific embodiment, selection of coefficients decrease the transmission power is carried out on the basis of the distribution of values of the ratio N/P for the whole population of subscribers in the cell cellular. (For these subscribers can be used in a variety of weights, obtained, for example, based on the combination of parameters they use means of communication, etc. Such weighting may be performed adaptively and/or dynamically, for example, depending on time of day). Initially, a measurement of the ratio N/P can be performed by a subscriber, for example, the pilot signals transmitted from the cell provider. At the same time, subscribers may also be performed by measuring the levels of interference (P) (I) from the cells of the cellular communication, which, as described below, can later be used to control the value of the transmit power of the cell cellular causing excessive interference. Messages on the measured level of the signal received from the primary, or native, cell-cell communication (ie), as well as reports about the levels of the signals received from other cells in the cellular transmit in a primary cell of the cellular communication, which then collect and define characteristics of effective IGF relationship N/a for the cell cellular. Alternatively, in a primary cell of the cellular communication may be transmitted directly to the characteristics of the relationship N/P.

To simplify the process of determining the characteristics of relationship N/a can be made a few assumptions. For example, it may be assumed that cell cellular interfering with, work with full transmit power. The distribution of values of the ratio N/P indicates the percentage of subscribers in the cell cellular communication, for which the ratio N/N exceeds a specific value of the ratio of N/P in the case when all the cells of a cellular transmission is performed with full power.

7 shows an example cumulative distribution function (CDF) values of the ratio N/N achieved in the scheme of re-use, single-cell cellular communication, in the case when all the cells of the cellular transmission is performed with full power. Through the sing the distribution of values of the ratio N/P, shown in Fig.7, the set of all subscribers can be divided into groups, where each group corresponds to a subscriber for which the interference from other cells of the cellular communication are approximately the same (i.e., for which the ratio N/P takes values within a certain range of values). For example, IGF, shown in Fig.7, it can be divided by Nwith=Nr·Nsgroups, where Nrthe number of cells in the cell cluster communication reuse, and Ns- the number of orthogonal channels allocated in the cluster for the cell cellular. In the example below, Ns=4 and Nr=3, resulting in a get that Nc=12. In the example below, select the groups perform so they have the same size (that is, each group contains the same percentage of subscribers), although there may also be an option to split into groups of unequal size.

Table 3 shows the data for Nc=12 groups of subscribers and lists the minimum values of relationship N/a for subscribers in each of the 12 groups of subscribers. Since there are 12 groups and each group has the same size, the composition of each group is approximately 8.3% of subscribers in the cell cellular. The first group contains Abona is tov, for which the ratio N/P is 10 dB or less, the second group contains subscribers, for which the ratio N/P takes values in the range from 10 dB to 13 dB, the third group contains subscribers, for which the ratio N/P takes values in the range from 13 dB to 15 dB, the fourth group contains subscribers, for which the ratio N/P takes values in the range from 15 dB to 17 dB, etc. and the last group contains the subscribers for which the value of the ratio N/exceeds to 34.5 dB.

Table 3
User groupThe minimum value of the ratio N/P in this range (dB)s(n) (dB).β(n)
1<10<-51,0000
210-51/0000
313-21,0000
41501,0000
51720,6310
618,53,50,4467
720,55,50,2818
82270,1995
9249 0,1259
1026110,0794
1129,514,50,0355
12>34,5>19,50,0112

From Fig.7 and Table 3 it is clear that the subscribers in the cell, cellular, have different parameters depending on the N/P. These subscribers may have different levels of performance, or to provide a specific level of performance may require different transmit power levels.

For example, to implement the operation with the desired data rate with an acceptable frequency of occurrence of errors may need to be in a cell of the cellular communication has been conserved, the set value of parameter γ (that is the required minimum value of relationship N/a). In conventional systems the set value of parameter γ depends on the instantaneous data rate selected by the subscribers, and, therefore, may vary for different subscribers. In a simple example, assume that for all subscribers in the cell cellular desired set value of parameter γ equal to 15 dB. In this case the minimum energy s(n) of the communication channel for each group of subscribers can be computed as education is Ohm:

s(n)=min{H/P(n)}-γ; n=1, 2,...,Nc. (1)

Minimum energy s(n) of the communication channel for each group of subscribers is equal to the difference between the minimum value of the ratio N/P for subscribers of the group and a set value of parameter γ. Minimum energy s(n) of the communication channel represents the deviation of the set value of the parameter from the desired transmit power under the assumption that all the cells of the cellular communication transfer with full power. Positive power supply of the communication channel indicates that the value of the ratio N/P is larger than that which is necessary to ensure the desired level of performance, given the parameter value γ. Thus, the transmit power to these subscribers can be reduced (i.e. reduced reduction ratio power transmission to the amount of energy stores while maintaining the desired level of performance.

In that case, if the normalized value of the maximum power level is 1, 0, then the normalized reduction ratio power transmission for each group of subscribers can be expressed in the following form:

β(n)=min(1,10-0,1·s(n)); n=1,2,...,Nc. (2)

Through reduction ratio power transmission corresponding to a particular group subscriber is in, display the degree of reduction of the transmission power, which can be used for this group of subscribers while maintaining the desired set value of parameter γand, therefore, the desired level of performance. Reducing the transmission power is possible because these subscribers have the best ratio of N/P. By lowering the transmit power to the active subscriber on the reduction ratio power transmission can be reduced interference for subscribers located in other cells, cellular communication, without affecting the performance of active subscriber.

Table 3 lists the values of the minimum energy reserve of s(n) of the communication channel and the coefficients decrease the transmission power for each group of subscribers for a given value of the parameter γequal to 15 dB. As shown in Table 3, channels 1 through 4 are the values of the energy stock channel 0 dB or less, and channels 5 through 12 are gradually increasing the best value power supply of the communication channel. Therefore, channels 1 through 4 are working with full power transmission and channels with the 5th through 12th work with a gradually decreasing capacity. To perform data transmission to subscribers of the respective groups of subscribers can be used coefficients decrease is Amnesty transmission. For example, because of the subscribers of the group 5 ratio N/a equal to or greater than 17 dB, and the minimum energy s(n) of the communication channel is equal to 2 dB, the transmit power to these subscribers can be reduced to 0,6310.

For subscribers, for which the ratio N/P is lower than the set value of parameter βcan be used several possible solutions. The data transfer rate to these subscribers can be reduced to this size, which can be provided when available against N/P. In an alternative embodiment, may be implemented transfer request to the source (s) of interference, determining existence of a low N/a, temporarily reduced(reduced) power transmission or stopped (stopped) the transmission through the channel (channels), which are having an impact, until, unless provided satisfactory service subscribers with a low ratio of N/P.

In one embodiment, the implementation after determining factors decrease the transmit power for one cell of a cellular communication schema reuse can be performed accommodation coefficients decrease the transmit power for other cells of the cellular communication schema reuse in a checkerboard pattern. For example, for the circuit surface is ornago use with N r=3 (i.e. containing 3 cell provider), through which control 12 channels and which is used as a shift by Ns=4 channel shift coefficients decrease the transmission power for a cell 2 can be executed by an amount equal to four modulo Ncand shift coefficients decrease the transmit power for the cell 3 may be executed by an amount equal to eight modulo Nc. In this scheme re-use in cell 1 using the coefficients decrease the transmission power corresponding to the 1st set of channels (which contains the channels and their corresponding coefficients decrease the transmission power, are shown in Table 3), in the cell 2 using the coefficients decrease the transmission power corresponding to the 2nd set of channels (which contains the channels and their corresponding coefficients decrease the transmission power, are shown in Table 3, but shifted down to four channels and looped by connecting the end of the table from the beginning), and in cell 3 use the coefficients decrease the transmission power corresponding 3-her set of channels (which contains the channels and their corresponding coefficients decrease the transmission power, are shown in Table 3, but shifted down to eight channels and looped by connecting the end of the table from its beginning the scrap). In this example, use the shift on channel 4, but can also be used and other offset value.

Table 4 shows the values of the coefficients decrease the transmission power for the cells with the 1st to 3rd using the ratios decrease transmit power from Table 3 and shift into four channels. For example, for the 1st channel in cell 1 using the reduction ratio of the transmission power corresponding to the channel 1 of the 1st aggregate, in the cell 2 using the reduction ratio of the transmission power corresponding to the channel 9 of the 1st aggregate, and in cell 3 using the reduction ratio of the transmission power corresponding to the channel 5 of the 1-St population.

Table 4
Channel nβ1(n)β2(n)β3(n)
11,00000,12590,6310
21,00000,07940,4467
31,00000,03550,2818
41,00000,01120,1995
50,63101,00000,1259
60,44671,00000,0794
70,28181,00000,0355
80,19951,00000,0112
90,12590,63101,0000
100,07940,44671,0000
110,03550,28181,0000
120,01120,19951,0000

Factors decrease the transmission power, are shown in Table 4, calculated on the basis of IGF relationship N/a from Fig.7, which is obtained taking into account the fact that other cells of the cellular communication system perform signal transmission with full power. However, when using coefficients decrease the transmission power in conjunction with the algorithm re-use of channels, providing chess the order shown in Table 4, the actual values of relationship N/a for subscribers located in a cell of the cellular communication may exceed the minimum value of relationship N/a listed in the second column of Table 3, since the interference from other cells cellular reduced due to factors decrease the transmission power.

Table 5 illustrates the improvement of the relations N/a, obtained by applying the scheme re COI is whether with 3 cell cellular shift channels in a checkerboard pattern and decrease the transmission power, thus suggest that the reception of signals from cells 2 and 3 cellular communication is performed with the same power levels. The first column lists the indexes of the channels 1 through 12. The second column shows the minimum values of relationship N/a, corresponding to 12 channels in the case when the transmission of the other cells of the cellular communication carried out with full power. The calculated values shown in the second column correspond to the variant in which the subscriber of the 1st group selected channel 1, the subscriber of the 2nd group selected channel 2, etc. as a subscriber of the 12-th group dedicated channel 12.

In the third column lists the values of the minimum energy reserve of s(n) of the communication channel for these 12 channels with a minimum value of the ratio N/P, specified in the second column. These values of s(n) correspond to the assumption that the set value of parameter γ equal to 15 dB. In the fourth, fifth and sixth columns present the coefficients decrease the transmission power for the cells, respectively, 1, 2 and 3, and the calculation is carried out on the basis of values of the energy reserve of the communication channel, which is specified in the third column. In the seventh column shows the values of the effective increase of the values of the energy reserve of s(n) communication channels from the third column, the received result from the use of schema reuse, consisting of 3 cells cellular and factors decrease the transmission power shown in columns 4 through 6 correspond to the situation in which perceived by the subscriber transmit power levels from cells 2 and 3 cellular, are the same. In this example, efficient energy supplycan be expressed in the following form:

=10·log10[(I2+I3)/(I2·β2(n)+I3·β3(n))]=

=10·log10[2/β2(n)+β3(n)], I2=I3.

In the last column of Table 5 shows the effective value of the ratio N/P for subscribers who selected channels 1 through 12, and which can be expressed in the following form:

H/Peff(n)=γ+min(0,s(n))+(n).

Table 5
Channel nH/Pmin(n) (dB)s(n) (dB)β1(n)β2(n)β3(n)(dB)N/amin(n) (DB)
1<10<-51,00000,12590,63104,2202<14,2202
2 10-51,00000,07940,44675,799515,7995
313-21,00000,03550,28187,995320,9953
41501,00000,01120,19959,772724,7727
51720,63101,00000,12592,495317,4953
618,53,50,44671,00000,07942,678317,6783
720,55,50,28181,00000,03552,858917,8589
82270,19951,00000,01122,961817,9618
92490,12590,63101,00000,885915,8859
1026110,07940,44671,00001,406616,4066
1129,514,50,03550,2818 1,00001,932016,9320
12>34,5>19,50,01120,19951,00002,2202>17,2202

As shown in Table 5, the effective value of the ratio N/P for subscribers who selected channels 1 through 12 increases due to the fact that the transmission of the other cells of the cellular communication is performed with reduced capacity. Without reducing the transmit power would be impossible to provide the specified parameter value equal to 15 dB, for those subscribers who selected channels from the 1st to the 3rd. By reducing the transmit power can provide the specified parameter value equal to 15 dB, for all subscribers, except the person to whom the selected channel 1.

A real system is usually not fully meet the above ideal model system. For example, the uneven distribution of subscribers, the uneven distribution of the locations of the cells of the cellular communication, different landscape and morphology, etc. make a total contribution to changing interference levels observed in each cell of the cellular communication. Therefore, there is a probability that the coefficients decrease the transmission power obtained for each cell in the cellular communication will be different, and the factors reducing power re the ACI for the cells of cellular communication in the cluster re-use can be such they are not variations of the same combination in Table 4, are displaced relative to each other on the module a number. Below shows the effects of various IGF relationship N/a coefficients decrease the transmission power.

On Fig shows a diagram of a system consisting of 21-th cell, cellular, which uses an adaptive algorithm for re-use with 3 cells. In this example, there are twelve channels for communication, with Nr=3, Ns=4, a Nc=12. For an ideal system with a similar system characteristics, the choice of the shift channel assigned to each cell of the cellular communication system may be performed as follows: Ns·mod (m,Nr=3), with:

- the cells in the cellular, having indices that are the condition mod(m,3)=0, assign the value of the offset channel 0

- the cells in the cellular, having indices that are the condition mod(m,3)=1, assign the value of the shift of the channel is equal to 4, and

- the cells in the cellular, having indices that are the condition mod(m,3)=2, assign the offset value of the channel is 8,

where m is the number of cells of the cellular system, consisting of 21-th cell, m=0, 1, 2,...20). In this algorithm, the shift offset value channel 0, set the cells 0, 3, 6,and 18 of Fig, is the shift of the channel, equal to 4, set the cells 1, 4, 7,and 19, and the offset value of the channel is equal to 8, set the cells 2, 5, 8,and 20.

In an ideal system, in that case, if the subscribers are uniformly distributed over the service area and the distribution of the signal is performed in the same way in all cells of the cellular communication system, IGF relationship N/a for each cell of the cellular communication system is the same (assuming that the number of cells of the cellular communication is infinite and therefore IGF relationship N/a in cells cellular, located on the periphery is the same). In reality, these conditions are not met, and there is a possibility that IGF relationship N/a for each cell of the cellular communication will be different. For example, there is a probability that the interference levels observed in cell 0 of the cellular communication system shown in Fig will differ from the levels of interference observed in the cell 7 cell communication. In the General case, because there is the possibility that IGF relationship N/a will be different for different cells of the cellular communication, it can be assumed that the coefficients βm(n) reducing the transmit power will be different for each cell cellular.

The influence of various factors βm(n) reducing the transmission power for each cell in the cellular communication on the structure plan to repeat the utilisation of can be illustrated by a specific example. In this example, assume that cell 1 cell communication has IGF relationship N/a, shown in Fig.7 that the cell 2 cellular has the same CDF, but shifted by 3 dB to the right (i.e. the average distribution line is shifted from a point corresponding to 20.5 dB, to the point corresponding to 23.5 dB), and that cell 3 cell communication has the same CDF, but shifted by 3 dB to the left (the middle line corresponds to 17.5 dB). In fact, IGF unlikely to represent the same distribution function, shifted one relative to another, as a simplified example is used here as an aid to clarify the influence of different βm(n) on the design of the system.

Table 6 lists the values of s1(n), s2(n) and s3(n) the minimum energy reserve a communication channel for, respectively, of the cells 1, 2, and 3 cluster consisting of 3 cells cellular received, on the basis that: (1) the subscribers in each cell of the cellular communication, divided into 12 groups of equal size, (2) assume that all the cells of a cellular transmission is performed with full power, and (3) the total given value of the parameter for all cells in the cellular communication equal to 15 dB.

By using the total set of parameter values for all three cell cluster consisting of 3 used the cellular and assuming that for all cells in the cellular, having the same index mod(m,3), IGF relationship N/a are the same, can be calculated coefficients decrease the transmission power for each cell in the cellular communication based on the total set of parameter values. Calculating coefficients β1(n), β2(n) and β3(n) reducing transmit power for, respectively, the 1st, 2nd and 3rd cell cellular carried out using equation (2) for the corresponding values of s1(n), s2(n) and s3(n) the minimum energy stock channel. For example, the coefficients decrease transmit power β2(n) for cell 2 cellular receive by performing a calculation using values of s2(n) the minimum energy stock channel, shown in the third column, and shift the resulting values for the four channel module 12. Similarly, the coefficients β3(n) reducing the transmit power for the cell 3 cell communication is obtained by performing a calculation using values of s3(n) the minimum energy stock channel, shown in the fourth column, and shift the resulting values of the eight channels on the module 12. Table 6 shows that the coefficients β1(n), β2(n) and β 3(n) reducing transmit power no longer represent variants of the same aggregate obtained by the mutual shift. This means that the effective value of the power supply of communication channels will be different in each cell of the cellular communication.

Table 6
Channel ns1(n)s2(n)s3(n)β1(n)β2(n)β3(n)
1<-5<-2<-81,0000,0631,000
2-5-2-81,0000,0400,891
3-21-51,0000,0180,562
403-31,0000,0060,398
525-10,6311,0000,251
63,56,50,50,4471,0000,158
75,58,525 0,2820,7940,071
871040,2000,5010,022
991260,1260,3161,000
10111480,0790,2241,000
1114,5of 17.511,50,0350,1411,000
1219,522,516,50,0110,1001,000

Table 7 lists the effective values ofandenergy reserve communication channels for cells, respectively, 1, 2, and 3 for the case where the cell of the cellular communication are listed in Table 6 odds β1(n), β2(n) and β3(n) reducing transmit power and assume that the signal from each cell in the cellular communication carried out with the same capacity (i.e., I1=I2=I3). Despite the fact that the initial calculation of the coefficients decrease the transmit power was carried out in such a manner that on the of especial the importance of the power supply of the communication channel, 0 dB at full power transfer from the cells of the cellular communication, in the case where the transmission of cells of a cellular communication using the ratios decrease the transmission power, the effective value of the power supply of communication channels, are shown in Table 7, changes from 0 dB to a number greater than 12 dB.

Table 7
Channel n
12,743,556,55
23,325,198,19
35,387,5410,54
46,95of 9.5512,55
52,042,502,74
62,372,682,84
7of 3.642,862,93
8of 5.822,962,99
91,820,000,89
102,130,241,41
112,44 1,072,69
122,601,554,55

As shown in Table 7, when using the total set of values for cells with various cellular IGF relationship N/a each cell in the cluster has a different bandwidth efficient, since the effective value of the power supply of communication channels differ. For example, before applying the procedure for reducing the transmit power of the subscribers in the cell 3 cell communication, had less favourable conditions than subscribers in other cells, cellular communication, because their cumulative value of the ratio N/P is the smallest. Conversely, the subscribers in the cell 2 cellular, had the highest total value of the ratio N/P to apply the schema decrease the transmission power. However, after applying the factors reducing power transfer occurs the reverse situation, in which the subscribers in the cell 3 cell communication, have the highest effective value of the power supply of communication channels, while subscribers in the cell 2 cellular, have the lowest effective value of the power supply of communication channels. This is because in the cell 3 cellular factors reduce the power transmission which are large in size (i.e. the capacity is reduced to a lesser extent), than those used in cells 1 and 2 cellular communication, which leads to the increase of the effective energy supply of channels in the cell 3 cell communication in comparison with other cell provider.

The uneven distribution of the effective values of the energy reserve communication channels between the cells in the cluster can be fixed by using a different set of parameter values in each cell of the cluster. In this particular example, the same coefficients decrease the transmission power in each cell of the cellular communication may be obtained, for example, through the use of the cell 2 cellular setpoint equal to 18 dB, and a given value of 12 dB, the cell 3 cell communication (because they IGF relationship N/a moved by ±3 dB). This concept can also be extended to the individual channels of the cells of the cellular communication.

The uneven distribution of the effective values of the energy reserve communication channels, shown in Table 1, can also be reduced by iterative calculation of the coefficients decrease the transmission power. For example, listed in Table 7 effective values of the energy reserve communication channels can be calculated another set of coefficients decrease the transmission power. This second set of factors is menichini transmit power can be combined (i.e. multiplied) with the first set of coefficients decrease the transmission power, in Table 6, resulting in creating an effective set of coefficients decrease the transmission power for use. Carry out the corresponding decrease in the transmission power for cells and channels that have a higher effective value of the power supply of the communication channel. The iterative process can be continued until, until there is obtained a state in which there are any noticeable changes in the effective values of the energy reserve communication channels for the cells of the cellular communication between iterations, or until, until you have made some specified conditions.

The operation of determining the characteristics of the cells of the cellular communication, and organization performance in the cells of the cellular communications are typically more complex than those described above (i.e. IGF relationship N/a unlikely to represent variants of the same function, obtained by mutual shift, as suggested in the above example). In addition, subscribers in each cell of the cellular communications generally occur in different levels of interference from other cells of the cellular communication. Therefore, to ensure the proper ordering of the effective values of energy stores in all the cells of the cellular communication system so that they do not exceed a specific the first threshold level, you may need a greater volume calculations. In that case, if it is desirable to ensure the availability of the normalized performance for cell cellular phone and/or channels can be used in a variety of specified parameter values. Can also be made altering the set of parameter values to obtain the uneven distribution of the operating characteristics of the system.

Regulation factors decrease the transmission power value default

In embodiments implementing the present invention using reduced transmit power, carry out the calculation of the coefficients decrease the transmission power and their supply in the cells of the cellular communication available in the system. After that the coefficients decrease the transmission power used in each cell of the cellular communication channel used for transmission.

According to one feature of the invention can be made dynamic and/or adaptive control (i.e. change) originally assigned (i.e. default) coefficients decrease the transmission power, taking into account, for example, load changes in the system parameters of the subscriber, the needs of the subscriber, performance objectives, etc. Regulation coefficients decrease. power transmission can be performed n the means of numerous algorithms, description some of which are mentioned below.

In one embodiment, the implementation of the algorithm regulation reduce the power transmission coefficient (coefficients) decrease the transmission power of the cell (cell) cellular source of interference is reduced over that period of time during which the subscriber, disadvantaged, has an active data transfer. As indicated above, for a subscriber, the disadvantaged, the desired set value of the parameter in many cases cannot be achieved due to the presence of excessive interference from a limited number of cells cellular.

If a caller in adverse conditions, can be secured in the desired preset value even in the case when he selected the best available channel, and this condition is referred to as "soft lock" ("soft-blocking"), it can be a temporary reduction in power transfer from other causing interference cell cellular included in the schema re-use, so that you can support the desired set value of the parameter for the subscriber, disadvantaged. For example, if the main source of interference to subscriber cell 1 cell connections and, disadvantaged, is cell 2 cellular communication, the transmit power of cell 2 cellular communication may be reduced by the amount (for example, by an additional 3 dB from β(n)=x to β(n)=0.5x reduction), necessary for the subscriber carried in adverse conditions, could communicate with the desired specified value.

In the example above, when applying the reduction ratio of the transmission power in the cell 2 cellular communication may be a situation in which it becomes impossible to provide the specified value for the subscriber in the cell 2 cellular communication, which, in principle, could lead to further reductions decrease the transmit power for other cells of the cellular communication. Therefore, in addition to regulating factors decrease the transmission power, can also be accomplished regulation of specified parameter values, which are used in specified channels of the cells of the cellular source of interference. In addition, this regulation may also be performed locally, thus to reduce the specified parameter values in both cells 1 and 2 cellular to values that provide the actual increase their aggregate bandwidth up to the maximum when one is belt retaining eligibility in respect of breach of communications for subscribers of both cell provider.

In another embodiment, the regulation algorithm decrease the transmission power in the cell (the cell), which is a source of noise may be temporarily discontinued the use of specific channel that provides the ability to service a caller in adverse conditions. Coefficient (coefficients) β(n) reducing the transmission power for the corresponding channel (corresponding channel) cells (cells) cellular communication, which is (are) the source of the interference, set equal to (equal to) 0, 0.

In a specific communication system the main type of interference for a specific subscriber can be interchannel interference from cell to cell communication in another cluster reuse. For example, with reference to Fig, the main source of interference to the subscriber in the cell 0 cell connection of one of the clusters consisting of 3 cells cellular, can be a cell 3 cell communication in another cluster of 3 cells cellular, which could be allocated the same set of coefficients decrease the transmission power that the cell 0 cell connection. To mitigate inter-channel interference can be accomplished by changing the coefficients decrease the transmit power for the cell 3 cell communication so that they differed from those of the step is icients decrease the transmit power for the cell 0 cell connection. For example, can be made the shift factors decrease the transmit power for the cell 3 cell communication on one or more channels, or one or more factors decrease the transmit power for the cell 3 cell communication can be performed other than for cell 0 cell connection, or can be made some other modifications.

In the amended version of the regulation algorithm decrease the transmission power can be accomplished by reserving one or more channels for exclusive use by each cell to cell communication, which is part of the schema reuse. In this case, the transmission on these channels from other cells of the cellular communication included in the schema reuse, do not produce (i.e. their block). The number of reserved channels can be set based on the load or from the requirements of the system, and can be made dynamic and/or adaptive management under changing operating conditions. In addition, the cells of the cellular communication may be allocated a different number of reserved channels, which again depends on the version of the system and its status.

The amount of reduction required transmit power can be obtained in various ways. In some embodiments, implementation of the program of the invention, each cell cellular has information about factors decreasing the transmission power, necessary in order to provide connectivity for subscribers located in adverse conditions, when the desired predetermined value. Can be done pre-calculating and storing the coefficients decrease the transmission power, or they may be determined based on a previous transfer. At that time, when the subscriber, disadvantaged, starts a session, the coefficient (coefficients) reduce the transmit power required for a subscriber are known for cell-cell communication, and it carries out its (their) transmission in cell (cell) cellular communication, which is (are) the source of the interference.

In embodiments of the invention, in which it is desirable to regulate (for example, to reduce or block the transmission power of the cell cellular source of the interference, the cell cellular issuing a request to the regulation of the reduction ratio of the transmission power can be transferred to cell cellular source of interference, the desired value adjustments factors decrease the transmission power of satisfying the customer's needs, disadvantaged. Value adjustments can be sent to you and the others who CACI cellular communication system, which can then use this information to improve the performance of these cells cellular communication. After that, the cells of the cellular communication, which are sources of interference, use the requested coefficients decrease the transmission power in accordance with a specified algorithm regulation decrease the transmission power. This regulation algorithm may specify, for example, time and duration of the period of time during which provide regulation. In that case, if the cell cellular communication, which is the source of the interference, receives requests to lower the transmission power of several other cells of the cellular communication, cell, cellular, which is a source of noise usually use those odds decrease the transmission power taken from cells in cellular issuing queries that maximize the reduction in transmit power.

Transfer request (or management team) for a temporary reduction or blocking the transmission power from other cells cellular cell cellular source of interference can be performed in a way that enables data transmission to subscribers in adverse conditions. The transmission of the query to the appropriate cell cellular source for the ex, can be carried out in dynamic mode or an ordered way (for example, every few frames), or by any other means. For example, at the beginning of each frame transmission from each cell in the cellular communication may be transferred to the list of such requests in the neighboring towards her cell cellular communication, this suggest that the requirements contained in the query will be executed in the next frame transmission. Can be implemented in other ways sending requests to other cells of the cellular communication that are within the scope of the patent claims of the present invention.

Regulation decrease the transmission power can be achieved by numerous methods. In one way transfer coefficients decrease the transmission power in adjacent cells of the cellular communication is performed in the dynamic mode, and shortly thereafter carry out their application (for example, in the next frame). In another method, the application of factors reduce the power transmission is carried out in a given time, which is famous for cells involved in cellular communication.

Restoring assigned (i.e. default) value of reduction ratio power transmission can also be carried out through numerous way is. In the same way the original value of the reduction ratio of the transmission power can be restored by issuing the command "restore" in the cell cellular source of interference. Another way to implement a gradual recovery of the original value of the reduction ratio power transmission through it step-by-step increase.

Another adjustment method for reducing transmission power in each cell of the cellular remember the well-known step size control reduction ratio power transmission for each channel. In each cell of the cellular remember the current value of the reduction ratio of the transmission power used for each channel, and the magnitude of the step increase and decrease of the reduction ratio power transmission. After that, the cell cellular perform the regulation of the reduction ratio power transmission according to the corresponding step value each time it receives the request to reduce transmission power.

In one of the embodiments of the invention each channel at a particular cell of the cellular communication can be set in accordance with a maximum and minimum limit value of reduction ratio power transmission. For example, suppose that in each cell of the cellular communications planner who sets the priority of transmission points in time, respective common edges of the frame, i=1, 2, 3.... in Addition, suppose thatandrepresent the maximum and minimum values β channel n cell m cell communication, and suppose that δzoom(n) and δslim(n) represent the values of the step size of the increase and decrease of power in channel n. Then the procedure of regulation decrease the transmission power in the i-frame in the channel n cell m cell communication can be expressed as follows:

(a) In the case when any of the neighboring cell cellular transfer commands reduce the power in the i-frame:

(b) otherwise:

If desired or if necessary, can also be performed adjustment of the maximum and minimum limit values of the reduction ratio power transmission. For example, the adjustment of the maximum and minimum limit values can be performed taking into account existing in the system load or the requirements for the system.

Dynamic regulation of the coefficients decrease the transmission power can be equated to the dynamic adjustment of set values of the system parameter or the maximum permissible speed n is to provide data for a channel (channels) with regard to the load, performance or any other criteria. As the load increases on the system by adjusting the set value of the parameter can be modified (i.e. reduced) to a level that allows you to ensure reliable operation of the channels. Usually adaptive adjustment of set value of the parameter and also perform for each channel. This allows, if desired or if necessary to specify different data transfer speeds through appropriate channels. Adaptive change of the setpoint parameter for each channel can be performed locally by each cell in the cellular communication.

Dynamic regulation of the coefficients decrease the transmission power can be extended in this way to provide dynamic regulation of the coefficients decrease the transmit power for all channels of each cell in the cellular communication. This distinctive feature allows the system regulation of the power level, essentially, in each of the channels so that for active subscribers of preset channels could provide the desired preset value. Therefore, it may be dependence of the power values in the channels of the neighboring cells of the cellular communication, for example, from a specific group of active subscribers, nah the workers in the local cell to cell communication from their needs, etc. If all of the subscribers in the cell to cell communication is such that all of them set the parameter values can be provided in all allocated channels, then use the coefficients decrease the transmission power, the default. Otherwise, carry out additional temporary reduction factors decrease the transmission power (that is, reduce the transmit power) in specified channels of neighboring cells of cell communication, which are sources of interference during the period of time specified duration.

In the case when there is a possibility of dynamic changes of the coefficients decrease the transmission power, the situation may arise where available in a particular cell of the cellular communication scheduler is unable to reliably determine the transmission power of the neighboring cells of the cellular communication. This can lead to uncertainty in the actual operating points (i.e. for values of the ratio N/P) for subscribers located within the local cell provider. Despite this, the operation control factors reduce the power can still be performed in the dynamic mode, for example, by performing the control based on the measured performance of the channel on which the impact.

For example the EP, in one of the embodiments of the invention by means of cell cellular control the average frequency of erased frames (EIC), which corresponds to a specific subscriber channel. In that case, when the actual ratio N/P is lower than the specified value, there is a higher probability that there will be a blurring of the frame, thus requiring re-transmission frame containing the error. In this situation, the cell provider may (1) decrease the data rate for the subscriber, (2) send in a cell, cellular, which (cells that are the source of the interference, the request to reduce their transmit power on a specific channel, or perform both operations (1) and (2).

The parameters used for distribution channels

Adaptive algorithms reuse according to the present invention, the proposed allocation of resources to subscribers, issuing a request for data transfer. While the system is running in normal mode shall receive requests for data from various subscribers located throughout the system. Then for the cells cellular targets of the triage data and providing channels to subscribers who perform in such a way as to ensure high efficiency and the high performance characteristics.

The operation of the triage data transmission and resource allocation subscribers can be performed taking into account several factors. Such factors can be, for example: (1) the priority assigned to active subscribers, (2) criteria relating to fairness resources, and (3) one or more quantitative criteria of the channel. Can be provided with the account also other factors, some of which are mentioned below, are within the scope of the patent claims of the present invention.

In one of the embodiments of the data distribution channels perform in such a way that, in the General case, first, provide customer service, with higher priority, and then the contacts that have a lower priority. The presence of the operation of assigning priorities usually leads to the fact that the process of establishing priorities and distribution channels is more simple, and as described below, it can also be used to ensure equality of subscribers. Prioritizing subscribers in each cell of the cellular communication may be performed on the basis of several criteria, such as average throughput, delays arising from subscribers, etc. a Description of some of these criteria are described below.

The priority of the subscriber may be the defined as a function of latency, which has already happened a subscriber. In that case, if the resource allocation is carried out on priority basis, the likelihood of a longer delay is higher for a subscriber having a lower priority. To ensure a minimum acceptable level of service can be accomplished by increasing the priority of the subscriber with increasing latency incurred by the subscriber. This priority boost prevents unacceptably long, or maybe even unlimited time delays in the transmission of data to a subscriber having a low priority.

For priority setting can also be used the value of the ratio N/P is achieved by the subscriber. For a subscriber having the lowest achieved value of the ratio N/P, can be achieved only low data rate. If the available resources are used for transmission of data to the subscriber, which achieved a higher value of the ratio N/P, then there is a high probability of increasing the average throughput of the system, resulting in improved system efficiency. Usually the preferred option is to transfer the data to the subscribers, which reached a higher value of the ratio of N/P.

For priority setting can also be used for the van payload of the subscriber. To ensure a large payload usually requires high speed data transfer, the maintenance which can be carried out only in a small number of available channels. Conversely, small payload can be provided, as a rule, a large number of available channels. For example, small payload can be assigned to a channel having a large reduction ratio power transmission, by which it may be impossible to ensure a high data transmission rate required for a large payload. As for the large payload procedure the triage data is more complex, higher priority may be assigned to the subscriber with a higher payload. Thus, for a subscriber with a large payload can be achieved this level of performance, which is comparable to the level of performance for a subscriber with a small payload.

The allocation of priorities between subscribers can also be made with regard to the type of transmitted data. Some types of data are time-critical and require immediate transfer. For other data types are permissible longer delay. A higher priority may be the assigned to the data which are time-sensitive. For example, the re-transmitted data may be given more priority than the data transfer is performed for the first time. Re-transmitted data generally correspond to the previously transmitted data, the receipt of which have failed. Because the signal processing in the receiver may depend on the data, which has completed with errors, then re-transmitted data may be assigned a higher priority.

The allocation of priorities between subscribers can also be carried out taking into account the given types of data services. Higher priority can be assigned to a high-paying types of services (e.g., those for which payment is higher). For different data transmission services may be determined by the price ratio. Through relative price the customer can determine the priority and type of service that the subscriber intends to use.

When the operation setting priorities subscribers above and other factors can be assigned weights and completed their merger. Depending on the set of optimization problems of the system can be used in different algorithms for assigning weights. For example, to ensure the optimization of the average carrying capacity is Noah ability of a cell cellular greater weighting factor may be assigned to the subscriber with the highest achievable value of the ratio N/P. Can also be used and other algorithms assign weights that are within the scope of the patent claims of the present invention.

In one embodiment, the implementation of the algorithm for assigning priorities to subscribers prioritizing subscribers carry out on the basis of provide for them the average bandwidth. In this embodiment, for each active subscriber in respect of which establish the sequence data, create it "metric". Maintenance of quantitative indicators of active subscribers that are serviced by the cell cellular communication may be performed via this cell cellular communication (i.e. via an algorithm with a distributed control) or can be carried out maintenance of quantitative indices of all active subscribers via a Central controller (i.e. via an algorithm with centralized management). The activity status of the subscriber can be defined at higher levels of the communication system.

In this embodiment, performs the calculation of the quantitative indicator ϕk(i) for a subscriber k in the i-th interval of the triage (for example, in the i-frame). Speed rk(i) data for the subscriber k in the i-frame, expressed in the genizah the number of bits per frame (bits/frame) and limited on the one hand, a maximum speed of rmax, transfer data, and on the other hand is zero (0). Speed rk(i) data may be a "potentially feasible" (i.e. "potential") data rate for a subscriber k, obtained based on the progress (i.e. measured) or achievable (i.e. obtained by the evaluation computation values of relationship N/P. Speed rk(i) data can also be an actual data transmission rate, which must be set for the current period the order, or any other data transfer speeds, quantifiable. The use of potentially feasible data rate leads to the effect of "shuffling" during the process of distribution channels, which, as described below, may result in improved performance for some of the subscribers in adverse conditions.

In a specific embodiment, the present invention quantitative indicators ϕk(i) for active subscribers can be expressed as follows:

ϕk(i)=α1·ϕk(i-1)+α0·rk(i)/rmax, (3)

where ϕk(i)=0 for i<0, a α0and α1- weight to the rates. For example, if α0and α1equal to 0.5, then the current rate, rk(i) data has the same weighting factor as a quantitative indicator ϕk(i-1)corresponding to the previous interval of the triage. Quantitative indicators ϕk(i) is approximately proportional to the normalized average throughput of subscribers.

In another specific embodiment, the present invention metric ϕk(i) for each active subscriber can be calculated as a moving average throughput in a moving time window. For example, can be computed average value (potentially feasible or effective) bandwidth to the subscriber-specific number of intervals the triage (for example, for the last 10 frames) and used as a quantitative indicator. Can be considered other embodiments of calculating the quantitative indicator ϕk(i) for active subscribers that are within the scope of the patent claims of the present invention.

In one of the embodiments of the invention in the case when the subscriber becomes active, the original value of the quantitative indicator set equal to normier the Anna speed data transfer, which can be achieved by the subscriber when the current value of the ratio N/P. Can be upgraded quantitative indicator for each active subscriber in each interval of the triage (e.g., each frame), and this operation is usually performed in the presence of transmission data to the subscriber in the current interval of the triage. Quantitative figures retain the same (equal to the same value) in the absence of data to the subscriber and set equal to zero in the case, if the subscriber is no longer active. If the order of transmission for the active subscriber is not set, then rk(i)=0. Whenever an error occurs in the frame of the effective transmission speed becomes equal to 0. Error information in the frame is not always immediately known because there is a delay in the transmission of signals an error in the frame in forward and reverse directions (for example, delays in the confirmation/non-confirmation of admission), and the proper regulation of the quantitative measure may be performed immediately after receiving information about the presence of errors in the frame.

Then the quantitative indicators used in the processor of the triage service for assigning subscribers priorities by which OS the p distribution channels. In a specific embodiment of the invention, the assignment of priorities to the group of active subscribers perform in such a way that the highest priority assigned to the subscriber, with the lowest metric, and the low priority assigned to the subscriber with the highest metric. When performing the operation of assigning priorities to the processor, the triage service can also assign quantitative indicators subscribers unequal weights. Through such unequal weights may be provided with the account of other factors (such as those described above)that should be taken into account when determining priorities subscribers.

In some embodiments of the invention (for example, when using potentially feasible data rate) figure ϕk(i) for a particular subscriber does not necessarily indicate those parameters that can be provided by the subscriber (i.e. may not show a potential data rate of the subscriber). For example, two subscribers may be given the same data rate, even if one subscriber can support higher speed before the Chi data, than the other. In this situation, the subscriber having a higher potential data rate can be given a higher figure, and therefore it will have a lower priority.

When prioritizing data transmission, and distribution channels can be applied the criterion of equality, providing (or may be even to guarantee the minimum level of service (UO). The criterion of equality is usually used for all system users, although the criterion of equality can also be applied to a specific selected subset of subscribers (for example, subscribers of paid services). Equality can be achieved through the use of priorities. For example, the priority of the subscriber can be increased in each case its exclusion of data from the list of priority transmission and/or for each unsuccessful transmission.

For the above algorithm to assign priorities to the subscribers of the resource allocation can be performed based on the correlation of quantitative indicators. In this case, it may be the comparison of quantitative indices of all active subscribers with a maximum of quantitative indicators of subscribers, resulting in creating a modified quantitative indicator/img> that can be expressed as follows:

k(i)/k(i)} (4)

In this case, the allocation of resources to a particular subscriber can be carried out on the basis of the modified measure. For example, if a quantitative indicator of the subscriber 1 twice a quantitative indicator of the subscriber 2, the processor of the triage service can perform the selection of the channel (or several channels), with the bandwidth required to align the data transmission speeds of these two subscribers (provided that such channel or channels exist). Based on considerations of equality processor the triage service may attempt ordering data transmission speeds in each interval of the triage. Can also be applied other criteria of equality, within the scope of patent claims of the present invention. Therefore, the allocation of resources (i.e. channels) subscribers can be carried out on the basis of several parameters. Some of these parameters can be combined in the form of characteristics of the channel. During each interval the triage and the interval for the La distribution channels can be calculated characteristics of the channel for each active subscriber and for each available channel. Then these calculated characteristics of the channel used for such distribution channels, which provides a more optimal use of resources. Based on the requirements of the system, can be used several different characteristics of the channel. As described below, when performing distribution channels can also be used for additional restrictions (for example, maximum power, minimum value of the ratio N/P and so on).

Characteristics of channel

For the implementation of such distribution channels, which provides a more efficient use of resources and improved performance, can be used one or more characteristics of the channel. Such characteristics of the channel may contain, for example, the characteristics obtained on the basis of the values of the noise level, the probability of breaking the link, the maximum bandwidth or any other criteria. Below are some examples of characteristics of the channel, indicating the "purity" of the channel. However, it is clear that can be created and used, and other characteristics of the channel, and they are within the scope of the patent claims of the present invention.

In one of the embodiments may be created and used, the characteristics of ka is Ala, based on the likelihood of breaking the link to active subscribers. In this case, the distribution channels operate in such a way as to minimize the likelihood of breaking the link for more subscribers. The probability of dm(n,k) violation of a link depends on the determined relationship N/a for the subscriber and represents the expected value of the probability of breaking the link for this contact in the channel. For system 3 cells cellular characterization of dm(n,k) channel for a given subscriber in the cell 1 can be expressed in the following form:

where:

βm(n) - reduction ratio power transmission corresponding to the channel n cell m cell communication, and 0≤β≤1.

If βm(n)=0, it is equivalent to the fact that the use of channel n cell m provider does not allow;

Pm(n) is the probability of the channel usage n cell m cell communication (i.e., the probability of busy channel);

Im(l,k) is the power of the signal received by the subscriber k in the cell m cell communication, cell l cell communication, broadcasting at full power;

f(x) is a function describing the probability of breaking the link for a given data rate, depending on X.

Characterization of dm(n,k) channel is predstavljaet a disruption of communication for a subscriber k in channel n cell m cell communication. In embodiments of the invention, in which use the characteristic of the dm(n,k) channel, the best channel, which is marked with the subscriber, is the channel having the lowest probability of breaking the link.

The calculation of the function f(x) can be performed with a certain degree of accuracy based on the estimated power values lm(l,k) transfer from the primary cell cell communication and cell cellular interfering. To improve the accuracy can be performed by averaging the values of f(x) for a certain period of time. There is a possibility of occurrence of pulsations values f(x), is due to the small attenuation of the signal and possibly random shading (for example, the appearance of the truck, blocking the main transmission path signals). To account for ripple selection of coefficients decrease the transmission power can be realized in such a way as to ensure the presence of some energy reserve, and adaptation of data rates can be made on the basis of changes in working conditions.

Calculation of estimated values of probability Pm(n) can be performed through various methods of valuation calculations. For example, if the channel is not used by the cell to cell communication, it can be measured interference level and provided with counting is that, how often this level exceeds a particular threshold. And in that case, if the cell cellular uses a channel through it may be provided with measuring and counting how often are erased frame. Both of these measured values can be used to calculate the estimated values of Pm(n). Pm(n) may also take the value of 1, 0.

Improvements provided in respect of risk communication through the use of schemes decrease the transmission power, can be ultimately reduced to the next. If the calculation of the evaluation values according to equation (5) is carried out at Pm(n)=1, 0 for all m and n, the results are equivalent to this algorithm distribution channels, in which all cells of the cellular communication have a full load. In the case where a decrease of the transmission power is not used (i.e. when βm(n)=1, 0 for all n and m) feature dm(n, k) channel for a given number k is the same for all channels n=1, 2,..., Nc. Therefore, in the mode without reducing the transmit power there are no preferences in the distribution channels. This lack of preference leads to inefficient use of available resources, since the subscribers in the cell cellular unlikely to have the same working conditions, and some subscribers are less susceptible to interference from other cells of the cellular communication than others. As described below, by applying a scheme of reducing the transmission power, in which the appropriate use of the composition of subscribers, can be carried out increasing the capacity of the system.

After computing the probabilities of breaking the link to active subscribers, can be performed distribution channels based on the priority of the subscriber as described below. The best channel that can be allocated to a given subscriber is the channel with the lower expected probability of breaking the link.

In equation (5) shows the expression for a system consisting of 3 cells cellular communication. General view of the expressions for the characteristics of the dm(n, k) channel is as follows:

where

ci,j=j•2i, (9)

under the symbol "•" Ci,jimply the logical operation "AND" ("AND") (i.e. withi,jequal to either 0 or 1).

The function f(x)given in equation (10) represents the probability of breaking the link, the estimate calculation which is executed when the value of the ratio N/P, is equal to X. When further obobscheniyami (10) it will contain the estimated values of several functions, f R(x), where the Superscript R denotes the function that describes the probability of breaking the link to a specific speed R data.

Equation (6) can be used for any number of cells Nr-th cluster re-use and contains members related to harmful interference from cell cellular that have the same value of the index is taken modulo Nr. Depending on the propagation characteristics of the signal and Nrthese "inter-channel" members can be significant for a subset of subscribers in a cell provider.

Can be made further generalization of equations (6)-(10) to ensure that interference from cell cellular communication outside of the local cluster reuse. In this case, instead of Nruse of Ncwhere Ncrepresents a collection of all cells of the cellular communication system. In the usual embodiments of implementation of the present invention, the set of Ncdoes not need to contain all the cells of the cellular communication system, but must contain the cell of the cellular communication, the interference level exceeds a specific threshold level.

In another embodiment of the invention for the operation of the distribution channels can be used for channel characterization based on the expected value and relationship N/a for active subscribers. Characteristic can be obtained, based on the probabilities of occupation of the channel and the restrictions imposed on the noise level. When using this as an example of a system consisting of 3 cells cellular characteristics of the channel for a subscriber 1 in cell 1 cell connection can be expressed as follows:

for n=1, 2,... Ncand k=1, 2,... Nc;

where Pm(n) is the probability that channel n is occupied by the subscriber in the cell m cell communication, and

Im(l,k) is the power of the signal received by the subscriber k in the cell m cell communication, cell l cell communication.

The value in equation (11) enclosed in parentheses, represents the amount of interference with weighting factors. The first term of the sum represents the probability that the cell 2 cellular transmits and cell 3 cell communication does not transfer, multiplied by the amount of interference from cell 2 cellular communication. The second term of the sum represents the probability that the cell 3 cell communication transmits and cell 2 cellular does not transfer, multiplied by the amount of interference from cell 3 cell communication. And the third term of the sum represents the probability that both cells 2 and 3 cellular transfer, multiplied by the amount of interference from the of cheek 2 and 3 cellular. "Purity" is inversely proportional to the ratio of the power of the useful signal to interference power.

Equation (11) provides for a system consisting of 3 cells, cellular communication, and can be extended to any number of cells cellular subscribers and channels in the same way as was done for equation (6). In the General case the number of members in the amount of strongly increases with the number of cells of the cellular communication. However, to simplify the calculations, the influence of some remote cell cellular can be neglected.

As described above, the transmit power for some or all channels of a particular cell of the cellular communication may be restrictions (i.e. it can be reduced), whereby improved business performance and compliance with the requirements of the system. In this case, equation (11) can be modified to account for decreasing the transmission power, and it can be expressed in the following form:

where βm(n) - reduction ratio power transmission corresponding to the channel n cell m cell communication, and 0≤β≤1. Thus, in equation (12) carry out a proportional reduction of each member corresponding to the interference coefficients βm(n) decrease the transmission power. the hen β =0, this is equivalent to blocking the transmission of cell-cell communication on the specified channel. As described above, the definition of βm(n) could be made static or dynamic way.

Other restrictions and consider factors

When prioritizing data transmission, and distribution channels for active subscribers in addition to the characteristics of the channel can also be used a number of limitations and qualifying factors. These limitations and take into account factors may be, including, for example, a too high probability of disrupting communications; requirements for the payload; provide subscribers data transfer rate; interference to the neighboring cells of the cellular communication; interference from other cells of the cellular communication; maximum power transfer; achievable value of relationship N/a and the desired set value of the parameter; delays in subscribers; the type and amount of data to be transferred; the proposed type of data transmission services, etc. the Above list is not exhaustive. Can also be considered and other limitations and take into account factors that are within the scope of the patent claims of the present invention.

The triage data

The functioning of the cells of the cellular communication system assests who are using adaptive plan reuse, which is created as described above and in accordance with the terms and conditions. In normal operation, each cell of the cellular communication receives requests for data from multiple subscribers in the cell cellular. Then cells cellular establish the sequence data in such a way as to ensure the fulfillment of tasks assigned to the system. The operation of the triage can be performed in each cell of the cellular communication (i.e. via an algorithm with distributed triage), by the Central controller (i.e. via an algorithm with centralized triage), or through a hybrid algorithm, in which some of the cells cellular determine the sequence of their own gear, and the Central controller determines the priority of transmission for a group of cells cellular.

A more detailed description of the algorithms with distributed, centralized and hybrid prioritizing described in U.S. patent No. 5923650 dated July 13, 1999, which is entitled "METHOD AND DEVICE for ESTABLISHING the ORDER of TRANSFER ON the REVERSE lines of COMMUNICATION WITH DIFFERENT SPEEDS" ("METHOD AND APPARATUS FOR REVERSE LINK RATE SCHEDULING"), U.S. patent No. 5914950 from June 22, 1999, which is also titled the "METHOD AND DEVICE for ESTABLISHING the ORDER of TRANSFER ON the REVERSE lines of COMMUNICATION WITH DIFFERENT SPEEDS" ("METHOD AND APPARATUS FOR REVERSE LINK RATE SCHEDULING"), and in the application for U.S. patent No. 08/798951 dated February 11, 1997, which is entitled "METHOD AND DEVICE for ESTABLISHING the ORDER of TRANSMISSION IN a STRAIGHT LINE at DIFFERENT SPEEDS" ("METHOD AND APPARATUS FOR FORWARD LINK RATE SCHEDULING"), the rights to all of which passed to the patentee of the present invention.

Figure 9 shows a diagram of the operational sequence for a variant implementation of the algorithm for the triage of data transmissions. Initially, at operation 910 updates the parameters used for the triage. These parameters can contain the settings that are used when calculating the above-described characteristics of the channel, which may contain, for example, the values of the probability of occurrence of the corresponding load, the probability of busy channel, different IGF relationship N/a, matrix interference constraints for each subscriber in each cell of the cellular communication, which establish the sequence of transmission coefficients decrease the transmission power, etc.

Then perform an operation 912, which set the priorities for subscribers and organize them by rank. Operation setting priorities and sequencing by rank usually performed only for those active subscribers that have data intended for transmission. Operation setting priorities subscribers who may be performed using any of a variety of algorithms for the estimation of subscribers and can be based on one or more of the above criteria, for example on the payload. Then carry out the appropriate ordering of active subscribers by rank, based on their assigned priorities.

Then perform an operation 914, which provide distribution channels for active subscribers. The operation of the distribution channels typically contains multiple operations. First compute the characteristic channel for available channels using the updated parameters. Can be used any of the above characteristics of the channel, or can also be used and other characteristics of the channel. Then carry out the allocation of channels to subscribers based on their priorities, needs and calculated characteristics of the channels. Perform triage transmission in Ncavailable channels for subscribers, the number of which in each cell of the cellular communications can reach Nc. A more detailed description of the procedure of distribution channels is shown below.

Then perform an operation 916, which shall update the system parameters so that through them was mapped distribution channels. The updated parameters may be, including, for example, the value of the required adjustment factors decrease the transmission power for channels in the cell of the cellular communication based on C the issues received from other cells of the cellular communication. Cell provider may also submit a request for adjustment in adjacent cells of the cellular communication and to adjust according to the requests received from the neighboring cells of the cellular communication.

Then perform an operation 918, in which the cell cellular transmits data using the allocated channels and the updated parameters. Operations 910-918 usually performed when the cells cellular communication in the normal mode. At operation 920 determine the presence of any data transmission, the sequence in which you want to install. If there are additional data in the process returning to operation 910 and establish the sequence of transmission of the next aggregate data to be transferred. Otherwise, the process is complete.

Distribution channels

Distribution channels can be implemented using a variety of algorithms and taking into account many factors. In one of the embodiments of the present invention priorities for all active subscribers in the cell cellular set in such a way as to ensure the possibility of allocating channels to all subscribers, since the subscriber with the highest priority to the subscriber having the lowest priority. About erace setting priorities for subscribers can be performed on the basis of a number of factors, for example, those described above.

One of the features of the invention is the algorithm of distribution channels based on needs. In this algorithm, the best use of available resources when performing distribution channels provide by incorporating the needs of customers or their requirements for the payload. For a particular combination of available channels, the service subscriber for which you want a smaller payload (for example, a lower data rate), can be carried out through a number of available channels, while the service subscriber for which you want a higher payload (for example, a higher data rate), can be achieved by a smaller number of available channels. If the subscriber requires a smaller payload, has a higher priority, and he selected the best of the available channels (from a variety of channels, which also meet the needs of the subscriber), and if this channel is the only channel through which can be secured to the needs of the subscriber with a higher payload, in this case, it may be provided service only one subscriber, and the use of resources assests who are ineffective.

For example, consider a situation in which there are three channels that can be allocated to two subscribers, and in which the subscriber 1 is required payload equal to 1 kilobyte, and for a subscriber 2 required payload equal to 10 kilobytes. Furthermore, assume that only one of these three channels meet the needs of the subscriber 2, and the needs of the subscriber 1 meets all three channels. Distribution channels can be made as follows:

(a) if the subscriber 2 has a higher priority than the subscriber 1, subscriber 2 allocate the channel to ensure maximum throughput for that person. In this case, the subscriber 1 by default, allocate the next best channel. Through the operation of distribution channels provide service both parties.

(b) if the subscriber 1 has a higher priority than the subscriber 2, and if the operation of the distribution channels tailored to subscribers in respect of the payload is not carried out, then the subscriber 1 may be a dedicated channel with the most efficient energy supply, even though the needs of the subscriber 1 could be satisfied through any of the available channels. Subscriber 2 default would be allocated to the next best channel, which may not match estvovati his needs. In this case, a subscriber 2 is performed with a lower data rate, or leave it in the queue until the next period of the triage.

For the case (b) there are several options for distribution channels. If the distribution channels are as described above, the power used in the channel that is allocated to the subscriber 1 can be reduced to a level that is necessary to ensure reliable communication at the desired data rate. Another option for distribution channels in the case of (b) is the allocation to the subscriber 1 channel with the lowest energy supply, which meets the needs of the subscriber 1. In such a distribution channels other best channels remain available for use by other subscribers, for which, perhaps, they are necessary (for example, due to the higher requirements of the payload or due to the presence of lower value achieved relations N/a). When using this method of distribution channels based on needs or payload provides the ability to select channels that have higher energy reserves, as subscribers, which may require additional power supply. Therefore, RA is the distribution channels based on payload provides the maximum effective throughput in this interval the triage.

In that case, if the number of subscribers is less than the number of available channels, as in the above example, there is a possibility of capacity building subscribers. Thus, it can be done capacity building subscriber 1 by allocating him the other Unallocated channel, which has a higher margin than the selected channel. The capacity of the subscriber 1 is done to reduce the effective transmit power required for transmission maintenance. That is, as the needs of the subscriber 1 can be satisfied by any of the remaining channels, re-allocation of the subscriber 1 channel with higher energy reserves can reduce the transmit power by the amount of energy reserve.

When performing the operation of distribution channels may be provided with the account, and other factors, in addition to payload customers. For example, there may be provided based on the values of probability Pm(n) to other cells of the cellular communication, broadcasting on a particular channel n. In that case, if multiple channels have almost the same characteristics of the channel, excluding Pm(n), the best of the allocated channel is the one that has the lowest probability of its use. Therefore, d is I determine the best distribution channels can be used a probability P m(n) employment channel.

The allocation of channels can be provided with the account of an excessively high probability of breaking the link. In some cases, there may be situations in which the allocation of a channel to a specific subscriber is unwarranted or inappropriate. For example, if the expected probability of violation of communication on a particular channel by the subscriber is excessive, there may be a reasonable likelihood that all data sent through this channel will be distorted and will require re-transmission. In addition, the allocation of the channel to the subscriber may lead to an increase in the likelihood of transmission from neighboring cells will also be distorted due to the additional interference. In these cases, the selection of the channel to the subscriber may not be feasible, and the best option may be the one in which the selection of this channel do not carry out, or this channel allocate to someone who can provide the best use of them.

Figure 10 shows the proposed in the present invention, the precedence diagram for a variant implementation of the algorithm of distribution channels based on needs. First, perform an operation 1010, at which carry out the calculation of the characteristics of the channel for active subscribers and available for Cana is offering. Can be used by various characteristics of the channel, for example, those described above. Through these characteristics of the channel provide the accounting information related to specific subscribers, if any. For example, the characteristics of the channel can be used information from matrix interference constraints, through which describe the power levels of the interference at the subscriber from the neighboring cells of the cellular communication. Then perform an operation 1012, which set the priorities of active subscribers and perform their ordering by rank, on the basis of the above factors. Operation priority setting may also be performed based on characteristics computed at operation 1010. Distribution channels perform using priorities of customers and the characteristics of the channel.

At operation 1014 from the list of active subscribers choose the subscriber with the highest priority. Then perform an operation 1016, in which the selected subscriber allocate channel with the worst characteristics that meet the needs of the subscriber. For example, when using the characteristics of the channel based on the probability of breaking the link, the selected subscriber allocate the channel with the highest probability of breaking the link, which, however, compliance is tout the needs of the subscriber in respect of breach of communication. Then perform an operation 1018, in which the subscriber that the selected channel is removed from the list of active subscribers. Then perform an operation 1020, which determine whether the list of active subscribers is empty, which means that the channels have been allocated to all active subscribers. In that case, if the list is not empty, the process returns to operation 1014, and perform the selection of the subscriber for which the channel has not been allocated and which has the highest priority, to highlight his channel. Otherwise, if the channels have been allocated to all subscribers, the process is complete.

In the algorithm of Figure 10 distribution channels usually carried out in the following order: subscribers with progressively decreasing priorities, allocate channels having successively increasing the odds decrease the transmission power. In that case, if the subscriber cannot be allocated to the channel that provides the desired value of the ratio N/P, then the result of the operation of the triage this subscriber will be able to transfer only a low data rate (this condition is here referred to as "dimming" ("dimming")) or can be transferred to another scheduled time (this condition is here referred to as "locking" ("blanking")). The priority of the subscriber, who is titsa in a state of "blackout" or "lock", can be increased, and this leads to the fact that in the next interval the triage and distribution channels accounting for this subscriber will be carried out at an earlier stage. After selecting subscribers source channels can be performed in the capacity of subscribers by highlighting them with the best channels in case of their presence.

In one of the algorithms capacity building channel serial re-selection to subscribers of best available channels (starting with the highest priority subscriber) is carried out in the case, if these channels correspond to the customer's needs and can provide a higher energy stock channel. After that, any remaining channels can be allocated to subscribers who have consistently decreasing priorities (i.e. in the order from highest to lowest). This algorithm capacity building to provide some or all of the active subscribers the best channels with higher values of the energy reserve of the communication channel.

In another algorithm capacity building capacity building subscribers, who are dedicated channels is implemented by increasing the number of allocated available channels. For example, if three channels of each of the subscribers, who are dedicated to the Nala move up to three positions. This algorithm extension allows you to provide the best channels for the majority of subscribers (or even all subscribers). For example, if intended for distribution channels 1 through 12 are gradually deteriorating performance, and the channels from the 4th through 12th initially selected nine subscribers, can be carried out capacity building of each subscriber on the three channels. In this case, nine subscribers will occupy channels 1 through 9, and the channels from 10 th to 12 th may be disabled.

Can be created and other algorithms for capacity building within the scope of patent claims of the present invention.

Figure 11 shows the sequence diagram of the operations proposed in the present invention a variant implementation of the algorithm for increasing the capacities of the channels. Before beginning the process of capacity building, shown at 11, the active subscribers allocate the original selected channels that can be performed via the above algorithm distribution channels of Figure 10. At operation 1110 determines whether all of the available channels allocated to the subscribers. If all channels have been selected, the channels for capacity building are missing, and in the process passes to operation 1128. Otherwise, the OS is p capacity building subscribers through available channels in the case if these channels are the best (they have the best characteristics of the channel)than the original selected channels.

Perform an operation 1112, in which from the list of active subscribers choose the subscriber with the highest priority for possible capacity building channels. For the selected subscriber at operation 1114 choose the "best" channel from the list of unselected channels. The best channel corresponds to the channel having the "best" characteristics of a channel for the selected subscriber (e.g., very low probability of breaking the link).

Then perform an operation 1116, which determine whether it is possible to carry out capacity building for the selected subscriber. In that case, if the best available channel characteristics of the channel are worse than for the channel initially allocated to the selected recipient, the capacity of the recipient is not carried out and in the process passes to operation 1124. Otherwise, perform an operation 1118, in which the capacity of the selected subscriber through the best available channel, then at operation 1120 is removed from the list of available channels. The channel initially allocated to the selected subscriber, may be placed back in the list of available channels for osmonalieva highlight any other subscriber, having a lower priority, they are in operation 1122. Then perform an operation 1124, in which the selected subscriber is removed from the list of active subscribers, regardless of whether the capacity of the channels or not.

Then perform an operation 1126, which determine whether the list of active subscribers is empty. In that case, if the list of subscribers is not empty, the process returns to operation 1110, and make a selection of the subscriber with the highest priority for the possible implementation of capacity building channels. Otherwise, in the absence of available channels for capacity building or if has already been made taking into account all active subscribers, the process passes to operation 1128, in which the control factors decrease the transmit power for all channels in such a way as to reduce the transmission power. After this process is complete.

In the process of capacity building figure 11 provide an effective capacity of active subscribers at the expense of existing channels through which more likely to be obtained is improved performance. The algorithm capacity building channels shown at 11, may be the main building is time to ensure improved capacity building of canals. For example, for a particular subscriber may be a likelihood that that person is the best channel, freed by the caller with a lower priority. However, this subscriber of this channel do not release because it has already been deleted from the list of subscribers to that point in time, when taking a decision in respect of subscribers who have a lower priority. Therefore, to ensure that this situation can be performed in the repeated process, shown at 11, or can be used other criteria. Can also be used and other algorithms for capacity building within the scope of patent claims of the present invention.

By means of the algorithm of distribution channels, shown in Figure 10, the allocation of available channels active subscribers carry out on the basis of their priorities. Prioritizing subscribers can be carried out on the basis of their "quantitative indicators", such as those that have been calculated using the above equation (3). As part of the qualifying factor of equality, a particular subscriber may be selected multiple channels in the presence of such channels and if the needs of the subscriber cannot be provided through a single channel. For example, the subscriber may order to be allocated: the first channel, through which you can ensure that 50% of all the needs of the subscriber; a second channel through which you can ensure that 35% of all the needs of the subscriber; and a third channel through which it is possible to provide the remaining 15% of all the needs of the subscriber. If such a specific allocation of resources to meet the needs of other users, then you can increase the priority of those subscribers, who have insufficient levels of service, so that the allocation of resources for them in subsequent intervals the triage will be done earlier.

According to some features of the present invention the selection of channels (i.e. resource allocation) subscribers carry out, in part, on the basis of their priorities and use dynamic adjustment of the priorities of the subscriber to create the effect of "shuffling" during data transfer. Data specific to the subscriber during various intervals of the triage can be allocated to different channels. This shuffling of data transferred in some cases, provides averaging of interference, which, as described below, may lead to additional improvement in performance for subscribers of the communication system under adverse conditions.

According to some of the output options for the implementation of the present invention during any stage of the process of distribution channels (for example, when the initial distribution channels, or when the capacity of channels) can be made proportional to the velocity data of subscribers so that they can ensure that they reflect the values of the effective energy stores dedicated communication channels, or may be performed increase factors decrease the transmission power, that reduce the capacity of the transmission channels, or may be made both of these operations. Regulation of the speed data subscribers may be performed based on the values of the effective energy supply of communication channels, thus increasing system throughput. In that case, if the achieved ratio N/P is less than a specified value (that is, efficient energy supply of the communication channel is negative), the data rate of the subscriber can be reduced to the value provided through the channel.

Also you can decrease the transmit power for all channels up to the minimum level necessary to provide the transmission with the desired data rates. Lowering the transmit power can be exercised by adjusting the coefficients decrease the transmission power corresponding to the selected channels. Factors decrease the value of the transmission power for the unselected channels can be reduced to zero (i.e. blocked), that provides less interference to other cells of the cellular communication.

Distribution channels for subscribers can be carried out both in the absence and in the presence of a certain number of conditions or restrictions in relation to frequency of use. These conditions may be, including, for example: (1) the limitation on the data rate, (2) the maximum transmit power, (3) the limitation of setpoint setting etc.

In the channel allocated to the active subscriber, can be used, the maximum data rate. For example, if the expected value of the ratio N/P can not be obtained the desired probability of breaking the link, to ensure compliance with this requirement can be accomplished by reducing the data transfer rate.

Restrictions on the maximum transmit power may be imposed on certain selected channels. In that case, if the cell mobile communication system includes information about limitations on transmit power from other cells of the cellular communication, the local calculation of the interference levels can be performed with a higher degree of reliability and the best planning and prioritizing.

In some situations, for example, in the presence of high loads in the selected channel can be used the ANO specific given value of the parameter (i.e. set the ratio N/P). The subscriber (e.g., having a low priority may be allocated to a channel that does not provide the required minimum probability of breaking the link (i.e. the expected value of the ratio N/P for the selected channel is lower than that which is necessary to ensure the specific risk communication). In this case, a situation may arise in which the subscriber must transmit on the selected channel using a lower set value of the setting that provides the desired probability of breaking the link. Used the set value of the parameter can be constant, or it can be changed when the load changes in the system. Also can be used your own preset value setting for each channel.

The control algorithms

Adaptive reuse, the algorithm for the triage data and algorithm of distribution channels can be implemented in various ways, and using numerous control algorithms, such as algorithm centralized algorithm with distributed control and algorithms with hybrid control. A more detailed description of some of these control algorithms is given below.

In the algorithm with centralized static switch module multi is the principal management information from active subscribers of all cells cellular, General management which need to be served in the Central processor which performs information processing, determines the priority of data transfers and distributes the channels based on the received information and the set of tasks performed by the system. In the algorithm with a distributed control information from active subscribers of each cell in the cellular communication served in the processor cell cellular communication, which performs information processing, determines the priority of the data and distributes the channels on the basis of information received from subscribers in this cell cellular communications, and other information obtained from other cell provider.

Via an algorithm with distributed management prioritizing data transmission, and distribution channels operate at the local level. The execution of the algorithm with a distributed control can be carried out in each cell of the cellular communication without the need for concerted action towards different cell provider.

In the algorithm with a distributed control can be provided for dynamic sharing local information other available cells cellular even though the operation of the triage and distribution is of analy can be performed locally in each cell of the cellular communication. Shared information may include, for example, the load value in a particular cell of the cellular communication, the list of active subscribers in the cell cellular communication, information on the availability of channels, the assigned coefficients decrease the transmission power, etc. In the algorithm with a distributed control sharing of this information is not necessary to implement a dynamic way, and this information can be a "static" information available for cells of the cellular communication system. Shared information can be used in the cell of the cellular communication as information for making decisions about the best way local allocation of resources.

Algorithm with a distributed control will be used in the mode of low load, and high load, and its implementation is simpler than the algorithm with centralized management. At low load there is a strong likelihood that the cells of the cellular communication can perform transmission using orthogonal channels, and this leads to the fact that interference from other cells of the cellular communication are minimal. With increasing load, the interference levels in the system are increasing, and there is a higher probability that in front of the net assets of the cells of the cellular communication will be carried out using non-orthogonal channels. However, when increasing the load increases the group of subscribers in a cell of the cellular communication, which can be selected. Some of these subscribers may be more sensitive to interference from other cells of the cellular communication than others. In the algorithm with a distributed control this fact is used in the distribution channels and prioritizing transmission for a group of active subscribers. Distribution channels operate in such a way to provide the maximum increase in the throughput of the system, taking into account limitations such as, for example, the value of the minimum instantaneous speed and average speed data for each subscriber.

Capacity management

Controlling transmission power of dedicated channels can be provided by means of cells of the cellular communication. In that case, if the subscriber selected channel, which has a positive power supply of the communication channel (i.e. the difference between the expected value of the ratio N/P and a set value of the parameter is positive), the transmit power can be reduced on the basis of the received energy stock channel. This eventually leads to lower levels of interference and increase the likelihood of successful transmission even when in other cells of the cellular communication in the system there is no information about the decrease in the power transmission of specific data. Power control can be performed in a dynamic mode in a manner that may be analogous to the method of power control in systems mdcr.

Sector

A description of the various features and embodiments of the present invention described with reference to the cell (cellular)". Used herein, the term "cell (cellular)also applies to the "sector" cell cellular, divided into sectors. For example, the cell cellular, consisting of 3 sectors, can be performed and can function in such a way that ensures the transfer of the three sets of data transmissions to subscribers located in three different (though usually overlapping) geographical areas. Therefore, as used herein, the term "cell (cellular)", in General, refers to any directional transmission in a specific area, and its boundaries are usually determined by the particular pattern of the beam coming from the source of the signal being transmitted. Escrow leads to lower noise and, therefore, provides improved performance and increased bandwidth, compared with an omnidirectional transmission. In the case when a particular cell cellular functions in such a way that supports many sects of the ditch, for resource allocation, the triage data transmission, and distribution channels can be ensured consistency between sectors of the same cell provider.

Therefore, various features and embodiments of the present invention, by means of which provide greater efficiency and improved performance can be realized within the structure, consisting of multiple cells, cellular communication, divided into sectors and/or is not divided into sectors. For example, each sector of a cell of the cellular communication may be set in accordance with a set of coefficients decrease the transmission power, the choice of the coefficients decrease the transmission power carried out in such a way as to minimize the level of interference with adjacent and nearby sectors. In addition, to further reduce noise, the transfer is performed in each sector may be permitted only during specified time intervals. For example, it may be determined that adjacent or nearby sector transfer at different points in time, whereby to provide a reduced level of interchannel interference.

Keeping in touch with many of the cells of the cellular communication

The communication system is designed for simultaneous service as mo is but a larger number of subscribers for the given parameters of the working environment. In some embodiments, implementation of the present invention, each subscriber to ensure that data is able to communicate with one or with small cell cellular. For example, for increasing the effective bandwidth for a subscriber can be used for data transmission from multiple cells of the cellular communication. Data transfer can be carried out simultaneously (subject to availability of resources) or sequentially, or by a combination of both methods. For example, the subscriber may issue a request to execute a transfer of a particular cell of the cellular communication (for example, one of the multi-cell cellular), with the best achieved value of the ratio of N/P. In dynamic mode the best achieved value of relationship N/a may correspond to a different cell cellular at different points in time, due to, for example, movement of a person, the presence of transmission and interference from neighboring cells cellular etc. data from multiple cells of the cellular communication can be synchronized or can be synchronized, depending on the specific variant implementation. The subscriber engaged in the reception of the transmission data, should be provided with information necessary for the appropriate unification of the received data.

In the communication system with packet transmission is her cell data cell communication can independently set the priority of the packet, without requiring coordination between cells cellular parameters such as, for example, specific data and/or the specific channel.

To improve performance (i.e. reliability) or bandwidth (in some modes) can be used bumpless transfer service. In the case when the set value of the parameter for a particular subscriber is negative or has only a small positive value, soft transfer service can be used to improve the reliability of the data of this subscriber (which may be provided with the improved performance of the system, because it can be prevented re-transmission of data). In the case when a large part of the cell cellular subscribers has a low value of the ratio N/P, soft transfer service can be used to increase system throughput (for example, for terminal devices with omnidirectional antennas). In the case where a low value of the ratio N/P is a small part of the subscribers, and there are additional opportunities to increase throughput, soft transfer service can be used to improve the reliability of data transmissions.

If a soft handover area is of usually enables synchronization of data transfers specified subscriber from the set of cells of the cellular communication so to enable coherent combining of received data. To provide the required synchronization prioritization of the data transmission can be performed by means of respective cells of the cellular communication.

The establishment of order in the ascending line of communication

The above features, options for implementation and execution of the present invention can be used for transmission of data from cell cellular subscribers in downlink. Many of these features, options, implementation and enforcement can be applied to transmissions from subscribers in a cell of the cellular communication upward communication. In uplink connection can be made to reserve a portion of available resources for transmission to subscriber requests and other service signals.

In one embodiment, the implementation of a request for data transmission on uplink communication may be sent by the subscriber based on the random access channel. The request can contain information such as payload (i.e. the amount of data intended for transmission), the achieved value of the ratio N/P, etc. Cell cellular receives the subscription request, determines the priority of transmission of the upward communication line, and sends information about prioritizing the subscriber. Such detail is rmacy about prioritizing may contain, for example, data on the time interval, which may result in the transfer of data on the data transmission speed (for example, about the algorithm modulation and coding), which should be used, and on the selected channel (selected channels). The prioritizing transmission of upward communication and distribution channels can be performed in a manner analogous to the description of which was given above for transmission on the downlink.

Integration with other schemes reuse

The invention may also be implemented within other schemas reuse or together with them. One of such schemes is disclosed in the article Tchange and others [..Fonq et al.), entitled "radio resource Allocation in fixed broadband wireless networks". Proceedings of the IEEE (Institute of electrical engineers and electronics) communications, volume 46, No. 6, June 1998 ("Radio Resource Allocation in Fixed. Broadband Wireless Networks", IEEE Transactions on Communications, Vol.46, No. 6, June 1998). In this reference describes the operations division of each cell in the cellular communication into several sectors and the data is transmitted in each sector within a specified (and possibly non-specified) time intervals, arranged in a checkerboard pattern, the choice of which is carried out in such a way as to reduce the interference level.

Another scheme re COI is whether disclosed in the article Kim and other (..Leung et al.), entitled "Dynamic resource allocation downlink and uplink communications for broadband services in fixed wireless networks". The IEEE journal on selected topics in communications engineering, vol. 17, No. 5, may 1999 ("Dynamic Allocation of Downlink and. Uplink Resource for Broadband Services in Fixed Wireless Networks," IEEE Journal on Selected Areas in Communications, Vol.17, No.5, May - 1999). In this reference describes the operations division of each cell in the cellular communication into several sectors and the data is transmitted in each sector within a specified (and possibly non-specified) time intervals and time potentialof, arranged in a checkerboard pattern, the choice of which is carried out in such a way as to reduce the interference level. Determine the value of the ratio N/P for subscribers, and the subscribers are divided into groups based on how many of the q parallel transmission is valid. Then perform model selection transfer and establish the sequence of the transmission data in such a way as to meet the customer's needs.

Another scheme re-use is disclosed in the article Coy and others (..Chawla et al.), having the name "Quasi-static allocation of resources to the prevention of interference for fixed wireless communication systems". The IEEE journal on selected topics in communications engineering, vol. 17, No. 3, March 1999 (Quasi-Static Resource Allocation with Interference Avoidance for Fixed. Wireless Systems," IEEE Journal on Selected Areas in Communications, Vol.17, No.3, March 1999). In this reference describes the operation of assigning each cell of the cellular sequence of deviations from the pattern and allow callers to transfer to a cell cellular data about the best time intervals, during which they can carry out data transfer.

Applications

There are many applications in which it is advisable to use the present invention. For example, the invention can be used in the communication system, providing broadband packet data, which can be used to provide access to the Internet, e-Commerce, content distribution information, broadcasting or radio broadcasting, and for many other applications. The invention can be used for transmission of voice, video, data, text, etc. by means of wireless communication systems to their subscribers at home, at work and in the movable state. The invention can be used for distribution to subscribers of the content information (for example, from a source of dissemination of information, for example, from a retail store, from the media and so on). Meaningful information is presented to the best any information, which can be represented in digital form, for example, movies, images, news, books, sound recordings, etc.

The present invention is particularly useful for transmission of the data available in the world wide web, and it can be used to provide high-speed access to the Internet for subscribers. The invention can be used in the communication system serving as "wireless cable" system, whereby subscribers can be provided with transfer programs with meaningful information (for example, containing films provided on request).

Using the methods of the present invention for this application tasks allows us to provide superior performance and high efficiency of the communication system. The present invention provides efficient allocation and use of available system resources through active re-use of existing resources. In some embodiments, implementation of the present invention, the reuse factor is close to unity.

The first example versions

For a better understanding of certain features of the invention are described below an example of the version that uses the algorithm re-use is of analy, arranged in a checkerboard pattern, with a decrease in transmit power. In this example, the version using the schema reuse, consisting of 3 cells, cellular communication, and to transmit may be used by Nwith=12 available channels. Subscribers in the cell, cellular, have IGF relationship N/a, shown in Fig.7.

To determine the source of the coefficients decrease the transmission power in this embodiment, carry out the separation of IGF relationship N/a from 7 to 12 groups of equal size. The minimum value of the energy reserve of s(n) communication channels for each group of subscribers for a given value of the parameter γequal to 15 dB, are shown in Table 3. Then the minimum value of the energy reserve of s(n) communication channels are used to determine the coefficients decrease the transmission power of the 12 available channels. Cell cellular perform so that their transmission characteristics approximately coincided with the value of the ratio N/P, which characterizes the subscribers in the cell cellular.

Table 4 lists the coefficients decrease the transmit power for the cell cellular from 1st to 3rd. Distribution channels for cell 1 cell communication performed so that the transmission allocated channels 1 through 4, it performs with a full mo the activities and the transmission channels from the 5th through 12th it can realize reduced power corresponding to the coefficients decrease the transmission power set in accordance with these channels. In this example, channel 5 originally performed in such a way that he worked with the reduction ratio of the transmission power equal to 0,6310; channel 6 perform such a way that he worked with the reduction ratio of the transmission power equal to 0,4467; and so on, and perform channel 12 so that it worked with the reduction ratio of the transmission power equal to 0,0112.

Cells 2 and 3 cellular assigned to the same factors decrease the transmission power, but shifted, respectively, for 4 channel and 8 channel module 12. Thus, the distribution channels for the cell 2 cellular perform in such a way that the transmission allocated channels from 5-th to 8-th it operates at full capacity, and transmission on other channels it can be performed with reduced power, and the distribution channels for the cell 3 cell communication performed so that the transmission allocated channels from 9th through 12th it operates at full capacity, and transmission on other channels it can be performed with reduced power. Factors decrease the transmit power for the cell cellular with 1 to 3 are shown in Table 4.

what factors decrease the transmission power, in Table 4, are based on the assumption that all the cells of the cellular communication transfer with full power. However, when applying the coefficients decrease the transmission power in conjunction with shift on channel 4 carried out in a checkerboard pattern, the actual value of relationship N/a for subscribers located in a cell of the cellular communication may exceed the minimum value of relationship N/a listed in the second column of Table 3, as there is less interference from other cells of the cellular communication caused by the use of coefficients decrease the transmission power.

In one of the embodiments of the present invention prioritizing data transmission, and distribution channels perform, in part, on the basis of the priorities of subscribers. Therefore, before performing the triage transmission, and distribution channels set the priorities of active subscribers and implement appropriate ordering them by rank, using any of the above factors.

In this embodiment, the control channels in each cell of the cellular communication carried out on the basis of predetermined coefficients decrease the transmission power. In this simple example, using the following factors and assumptions. First, in each cell of the honeycomb is howling connection 12 is active subscribers, in this example, considering only subscribers from cell 1. Assume that the power levels of signals received by the subscribers in the cell 1 cell communication are the same and equal to one. Assume that the power levels of signals received from cells 2 and 3 cellular, are the same (i.e. I2=I3), and the levels of interference encountered by subscribers from 1st through 12th, shown in the second column of Table 9. The levels of interference for subscribers from 1st to 12th may correspond to, for example, the levels of interference arising from the subscribers, members of the groups respectively with 1 to 12 described above with reference to Fig.7. Assume that thermal noise are negligible.

In this embodiment, the distribution channels carried out using the characteristics of the channels, based on the expected value of the ratio N/P for subscribers. Therefore, before performing the triage and distribution channels perform the calculation of the characteristics of channels for active subscribers using equation (12). In the columns of Table 8 shows calculated for active subscribers of the channel characteristic when used in a cell cellular factors decrease the transmission power specified in Table 4, and the power levels I2and I 3the received signals are given in the second column of Table 9. Calculations suggest that both of the values of P2and R3equal to one.

In this example, the prioritization of active subscribers effected on the basis of the maximum values of the characteristics of the channel, which can be achieved by them in using the known factors decrease the transmission power. Determine the maximum achievable value of the characteristics of the channel for all 12 of the subscribers listed in the penultimate row of Table 8. In this example, the highest priority that is equal to 12, set the subscriber having the lowest maximum attainable value of the characteristic of the channel (i.e. the subscriber 1, the next in order of highest priority, equal to 11, assigned to the subscriber with the following in order, the lowest maximum attainable value of the characteristic of the channel (i.e. the subscriber 2), and so forth, and the lowest priority is 1, assign the subscriber with the highest maximum attainable value of the characteristic of the channel (i.e. the subscriber 12). The priorities of the subscribers listed in the last row of Table 8 and in the third column of Table 9.

Table 8
Channel Characteristics of the subscriber channel
d(1)d(2)d(3)d(4)d(5)d(6)d(7)d(8)d(9)d(10)d(11)d(12)
18,426,466,483,6132,4209,9332,7527,3663,81052,02642,510520,1
2to 12.038,095,5120,2to 190.5302,0478,6758,5954,91513,43801,415133,8
3to 19.963,0158,3199,3315,9500,6793,51257,61583,22509,26302,825091,9
430,094,9238,4300,1to 475.6753,81194,71893,52383,83778,19490,137780,7
53,511,228,235,456,289,0141,1223, 281,5446,21120,84462,0
62,68,320,826,241,565,7104,2165,1207,9329,5827,63294,8
71,7of 5.413,717,227,343,268,5108,6136,7216,7544,42167,1
81,2a 3.99,912,519,831,349,778,7of 99.1157,1394,61571,0
90,51,5a 3.9a 4.97,712,319,430,838,861,5154,4614,6
100,31,12,83,55,58,713,8of 21.927,643,7109,8437,2
110,20,61,41,82,84,47,011,0 13,922,055,4220,4
120,10,20,50,60,91,52,43,7the 4.77,418,774,5
dmax(k)30,094,9238,4300,1to 475.6753,81194,71893,52383,83778,19490,137780,7
Priority121110987654321

Then carry out the allocation of channels to subscribers based on their priorities and the calculated values of the characteristics of the channel. First select the subscriber with the highest priority (that is, the subscriber 1) and give him the channel corresponding to the maximum achievable for them to value the characteristics of the channel (i.e. channel 4, channel = 30,0). Then select the subscriber with the following in order of highest priority (that is, subscriber 2), and give him the channel corresponding to the second largest maximum achievable they value the characteristics of the channel (i.e. channel 3,channel = 63,0), because this channel is the best of the available channels (channel 4 has already been allocated to the subscriber 1). The process of distribution channels and continue to the subscriber 3 allocate channel 2, the subscriber 4 allocate channel 1 and so on, and the subscriber 12 allocate channel 12. In the fourth column of Table 9 lists the channels allocated to these 12 subscribers.

Can then be computed the value of the ratio N/P for subscribers on the basis of allocated channels and taking into account factors decrease the transmission power used in cells 2 and 3 cellular, which are shown in Table 4. The value of relationship N/a (in dB)achieved by the subscribers listed in the fifth column of Table 9. For a given value of parameter γequal to 15 dB, the values of the energy reserve channels of communication for subscribers can be calculated based on the value of relationship N/a, specified in the fifth column. In the sixth column shows the values of the energy reserve of the communication channel (in dB) relative to a set of parameter values equal to 15 dB, provided by each subscriber in the selected channel when using coefficients decrease the transmission power.

In this example, subscribers from 2nd through 12th have positive energy reserve, and for a subscriber 1 provide almost given value of the parameter.

Then you can decrease the odds of reducing power the STI transmission to subscribers on the magnitude of the positive power supply of the communication channel, if available. Regulation factors reduce the power transmission can be performed systematically as part of the process of distribution channels or dynamically as part of algorithm power control. In the last column of Table 9 shows the coefficients decrease the transmission power required to ensure that the ratio of N/a was approximately equal to the specified parameter value (i.e. to the energy supply of the communication channel was approximately equal to zero). The degree of reduction factors decrease the transmission power required for obtaining the desired set value of the parameter with respect to the initial values of the coefficients decrease the transmission power can be obtained by comparing the last two columns of Table 9 between them.

Table 9
SubscriberI2, I3The priority of the subscriberDedicated channelThe ratio of N/P in the presence of the reduction ratio power transmission (dB)The energy at the source reduction ratio power transmission (dB)Source reduction ratio power transmissionThe actual reduction ratio of the transmission power that is required on the I, to the ratio of N/a was equal to 15 dB
10,1581112414,773-0,2271,00001,000
20,0500011317,9952,9951,00000,502
30,010219,7994,7990,331
1,0000
1991
40,015819119,2204,2201,00000,378
50,009988517,4952,4950,63100,355
60,006297617,6782,6780,44670,241
70,003976717,8592,8590,28180,146
80,002515817,9622,9620,19950,101
90,001994915,8860,8860,12590,103
100,0012631016,4071,4070,07940,057
110,0005021116,9321,9320,03550,023

If the ratio N/P for the selected channel exceeds the specified value, then there is an additional energy supply of the communication channel. In this case, the data rate of the subscriber may be increased to a level that meets the criteria related to communications breakdown or power of the transmitter can be reduced in size, which can reach values of the energy reserve of the communication channel. These adjustments can be made for each of the active subscribers.

If the ratio N/P, obtained by using the appropriate existing channels is worse than that which is necessary for the subscriber, the desired performance can not be ensured. When this situation occurs, there is a number of possible solutions. In one embodiment, the solution of the transmission data to the subscriber can be carried out with a lower data rate that satisfies the criterion-related disruption. In another embodiment, the decision operation of the triage transmission for the subscriber does not perform within the current transmission interval, and the channel remains available for any other party. In this case, the priority of the subscriber, which does not perform an operation to establish the order of transmission may be increased, and this leads to the fact that in the next interval the triage and distribution channels accounting for this subscriber will be carried out at an earlier stage.

Even when reducing transmit power for some of the subscribers of the group 1 may not be provided with the operation mode set value of parameter γequal to 15 dB. In the case where the effective value of the ratio N/P is lower than the set value of the parameter can be reduced speeds corresponding to these subscribers, to a level that provides acceptable performance (e.g., specific values CPOB, EIC or the probability of breaking the link). However, in some cases it may be necessary to address the major sources of interference, the presence of co is that not possible to provide for these subscribers mode at a given parameter value. To ensure this, the system can be designed in such a way as to make adaptive change of the coefficients decrease the transmission power and/or set values in the channels, based on the specific needs of the customer.

As described above, the coefficients decrease the transmission power depends on the set value of parameter γrequired for functioning with a specific data rate and a specific level of performance. The set value of parameter γ is actually a function of the data rate selected by the subscriber. In that case, if the speed data subscribers are variable, the conditional probability of breaking the link, given by equation (6)is a function of the selected data transfer rate.

In that case, if the update of the priorities of subscribers is carried out in accordance with their average throughput distribution channels can be designed in such a way as to ensure the assigned subscribers data transmission speeds. Therefore, the channel allocated to a specific subscriber, represents the channel that provides the maximum bandwidth for a subscriber with a specific probability of breaking the link. For example, in the process of distribution the channels first perform an assessment of the best for the subscriber channel, specified in the list of available channels. Then for the caller allocate the maximum data rate for this channel, which satisfies the desired criteria in the probability of breaking the link.

Also, if necessary, can be accomplished by adjustment of the maximum and minimum coefficients decrease the transmission power. For example, the regulation of these maximum and minimum limit values can be performed based on the load on the system.

In the above example, in the case when the load in the system does not exceed 4 subscriber for each cell, cellular, cell 1 cellular subscribers allocate channels 1 through 4, in the cell 2 cellular subscribers allocate channels 5 through 8, and in section 3 cellular subscribers allocate channels from 9th through 12th. In this example, the transfer of all these channels operate at full capacity, so you can regulate the speed data subscribers to such values, which provide for a specific subscriber bandwidth allocated to the channel. However, if the set value of the system parameter has been reduced, some of these channels may have these factors decrease the transmission power, which does not allow the channel to its full capacity even in the event of the absence of interference from neighboring cells of the cellular communications in the load. Therefore, when the load in the cell cellular does not exceed four subscriber on each cell of the cellular communication, to ensure the possibility of using full power (for example, to create additional energy stock channel), it may be desirable to set the reduction ratio power transmission for channels 1 through 4 is equal to the unit.

The second example versions

In the second example, the version for each cell cellular allocate part of the resources available, and then transfer it on the allocated resources perform at full capacity. When you increase the load transfer from each cell can also be carried out on channels that were not it is selected.

In this second embodiment, the channels with a higher likelihood of the presence of large levels of interference allocate subscribers, which assume a higher level of interference. It is obvious that the subscribers in any given cell of the cellular communication, usually have different allowable interference level, and this property can be used in each cell of the cellular communications in the distribution channels. By increasing the load in each cell of the cellular communication its influence on the throughput of those subscribers for which there is the greatest probability of creating mutual p is meh is minimal, since these subscribers allowable interference level is higher.

In one of the embodiments in the cell cellular serves information characterizing interference in each in the cell of the cellular communication active subscriber, which is caused by the transfer of data from other cells of the cellular communication. In the case when the number of active subscribers exceeds the number of allocated channels in the cell of the cellular communication can be carried out the choice of the person for whom the allowable interference level is highest, and the provision of this subscriber channel with overlapping (orthogonal), which provides the best overall against N/a for that person.

For a better understanding of the present invention will now be described a specific example that used an algorithm reuse with 3 cells, cell communication, and cell 1 cell communication contains five active subscribers.

Table 10 shows an example of the limitations on the level of interference for each of the 5 active subscribers in the cell 1 cell communication. To simplify the example makes the following assumptions: (1) thermal noise are negligible; (2) all subscribers in a cell 1 cell communication have the same loss on the road the e signal to the cell 1 cell communication; and (3) in the mode of activity of all the cells of the cellular communication transfer with the same constant power level (i.e. the decrease in the power transmission and control transmit power does not produce). This means that the received signal strength is the same for all subscribers (that is, C=I1(1,k)=1).

With the above assumptions, in the second column of Table 10 shows the values of the levels of interference I1(2,k) from the neighboring cell 2 cell connection for each subscriber in the cell m cell communication, and the third column shows the values of the levels of interference I1(3,k) from the adjacent cell 3 cell communication. By legend Im(1,k) denote the interference to the subscriber k in the cell m cell communication that occurs in a particular channel due to the transfer carried out in the cell 1 cell communication. The fourth column shows the values of relationship N/a for subscribers located in the cell 1 cell communication received considering the fact that the transfer from cell 3 cell communication is not carried out (and again assuming that C=1). Similarly, in the fifth column shows the values of relationship N/a for subscribers located in the cell 1 cell communication received considering the fact that the cell 2 cellular connection disabled. In the sixth column shows the effective value of relationship N/a for subscribers who and, received considering the fact that interference to the subscriber create both cells 2 and 3 cellular. The interference levels and the value of relationship N/a can be determined, for example, the pilot signals transmitted by the cell provider. These numerical values can also be set during commissioning (for example, in the case of a stationary target devices) or determined by the subscribers in a dynamic mode and lodged in a cell provider.

In the last column lists the grade that corresponds to each subscriber from cell 1 cell communication, where grade 1 usually indicates the highest priority. Depending on the tasks assigned to the system, the operation of ordering by rank can be implemented by means of several algorithms ordering by rank, description, some of which are mentioned below. For example, in the simple algorithm ordering by rank assignment subscribers ranks effected on the basis of the average value of their full capacity. In this example, the ranks assigned to the subscribers, is inversely proportional to the ratio N/P for subscribers (i.e. the lowest value of the ratio N/P is the highest priority).

Table 10
Subscriber kInterference from cell 2 cellular I1(2,k) Interference from cell 3 cell communication I1(3,k)C/I1(2,k)C/I1(3,k)C/I(k)The rank of subscriber
10,50,323,331,251
20,30,43,332,51,432
30,20,15103,333
40,10,051020to 6.674
50,010,05002016,675

The allocation of channels can be provided with the account of the load in the neighboring cells of the cellular communication so that in the first place to carry out the distribution of those channels that have less likelihood of their neighboring cells of cell communication. Can be provided information transfer of the load to adjacent cells of the cellular communication, or its evaluation can be performed locally in the cell cellular. Load information can then be used to calculate the probability that a particular channel will be used by the neighboring cell of the cell with the ides during the period of transmission time, of interest. The ability to calculate or local estimates of the probability that the channel is busy neighboring cell cellular due to the fact that the cells of the cellular communication based on similar rules of distribution channels.

In Table 11 as a specific example, the values of probability Pm(n) employment channel for a system consisting of 3 cells cellular, where by Rm(n) denotes the probability that channel n cell m cell communication is employed. In the second column of Table 11 shows the values of the probability that the cell 1 cell communication will provide an active subscriber in the cell cellular concrete channel number (i.e., n=1, 2,...12). Similarly, in the third and fourth columns present the values of the probability that the cell cellular communication, respectively, 2 and 3 will provide an active subscriber specific channel number. In this example, perform the shift channels allocated to these three cells of the cellular communication on channel 4, and this is reflected in the values of the probability Pm(n) employment channel for these three cell provider.

In this simple example, through each cell in the cellular communication provide simultaneous service, on average, approximately four subscribers. To ensure minimal POM is x from other cells of the cellular communication two of subscribers, in each cell of the cellular communication, allocate the average of the allocated channels. For example, in cell 1 cell due to the two subscribers are usually isolated channels 2 and 3, cell 2 cellular two subscribers are usually isolated channels 6 and 7, and in section 3 two cellular subscribers usually allocate the channels 10 and 11. In this example, the likelihood that subscribers will be selected channels, more distant from the middle, is gradually decreasing. Thus, in the cell 1 cell communication channel 4 allocate to the subscriber in two times less than the channel 3 and channel 5 emit about four times less than the channel 3, and so on

In this simple example, the load is the same for all three cells, cell communication, and the values of the probability of busy channel for each cell in the cellular communication are simply a variant of the probability of busy channel to the neighboring cells of the cellular shift. It may be noted that this table can be obtained locally in any of the cells of the cellular communication by evaluating the load in the neighboring cells of cell communication.

Table 11
Channel nP1(n)P2(n)P3(n)
10,50,031250,25
21 0,06250,125
310,1250,0625
40,50,250,03125
50,250,50,03125
60,12510,0625
70,062510,125
80,031250,50,25
90,031250,250,5
100,06250,1251
110,1250,06251
120,250,031250,5

Table 12 shows the values of the characteristics of the hm(n,k) channel, calculated using equation (11) for all 12 available channels all 5 active subscribers from cell 1 to cell communication. The first column lists these 12 channels 1 through 12. In each of the columns from the second to the sixth lists the values of the characteristics of the channel hm(n,k), calculated for a specific user k. The values of the characteristics of the channel specified in Table 12, are calculated using the values of probability Pm(n) employment channel, are shown in Table 11, and the values of noise Im (l,k) from the cells of the cellular communication shown in Table 10.

For example, the characteristic of hm(n,k) channel for a subscriber 1 and channel 1 can be calculated as follows:

Table 12
Channel nSubscriber
k=1k=2k=3k=4k=5.
111,039,1432,00PHP 64.0073,99
214,5514,5540,0080,00131,96
312,3116,0032,00PHP 64.00196,92
47,4411,4318,8237,65209,84
53,866,159,7019,39125,49
61, 93is 3.084,859,7053,33
7to 1.862,864,719,4136,36
8is 3.084,008,0016,0034,78
93,64 of 3.6410,0020,0025,81
10was 2.76to 2.298,0016,0016,00
113,022,398,8917,7817,78
126,044,7817,7835,5637,43
The rank of the caller →12345
Dedicated channel →23145

From Table 12 it is seen that the values of the characteristics of the channel for all subscribers in the cell 1 cell communication, in General, are higher near the channels 2 and 3 (the middle of the channels allocated to the cell 1 cell communication), and tend to decrease when the offset from the middle. Moreover, in this example, the set of characteristics for a subscriber 1 is the smallest, and the set of characteristics for a subscriber 5 is the highest, with values consistently increase from left to right.

In one embodiment, the implementation of the algorithm of distribution channels, distribution channels operate on the basis of the ranks of subscribers and the aggregate characteristics of the channel is similar to those which are presented in Table 12.

To provide channels to subscribers can be used by various algorithms distribution channels. These algorithms vary in complexity and optimality (i.e. quality) of the distribution results. Below is a description of several such algorithms to explain the invention. However, it can also be used and other algorithms that are within the scope of the patent claims of the present invention.

In particular the algorithm of distribution channels, which can be implemented by simple methods, the best possible allocate channels to the subscribers, having successively lower priorities, starting with the subscriber with the highest priority. Subscribers with higher priority are more sensitive to interference, and they produce the best channels. Therefore, the subscriber 1 (subscriber with the highest priority) allocate channel 2, which corresponds to the highest value of the characteristic, equal 14,55. Then channel 2 is removed from the cell cellular list of available channels. Then the subscriber 2 subscriber having the second largest priority of the most high) allocate channel 3, which corresponds to the highest value of the characteristic, equal 16,00, and channel 3 is then removed from the list. For the of boneta 3 (subscriber, having the third largest priority of the most high) most high characteristic value corresponds to channel 2, but he allocate channel 1, because both channels 2 and 3 have already been allocated and is not in the list of available channels. Similarly, the subscriber 4 allocate channel 4, appropriate for it's fourth largest value from the highest value features as channels 1 through 3 have already been allocated. Finally, the subscriber 5 allocate channel 5, i.e. the channel with the highest value of the characteristic of the available channels. Channels allocated to each subscriber listed in the last row of Table 12.

In one of the embodiments of the invention in the case of equality of parameters in the distribution channels (i.e. if the same value or close values of the characteristics of the channel is set in accordance with more than one channel) direct distribution channels do not exercise. Instead, celebrate those channels that led to the emergence of equality of parameters, and continue to perform the analysis for other users with a lower priority. In that case, if the highest value features for the next caller matches any of the selected channels, this channel can be allocated to this subscriber and removed from the list with the I channel. When the list of marked channels for a particular subscriber is reduced to one, the remaining channel to allocate to the subscriber with the highest priority, which noted this channel.

In another algorithm, distribution channels, which is a variation of the above algorithm, the distribution channels can be provided with the account of the differences between the characteristic values of the channels for the respective channels. In some cases the best option may be the one in which the subscriber with the highest priority, do not release the channel with the highest value features. For example, if a particular subscriber has multiple channels with the same characteristic value, or if the required ratio N/a can be provided through multiple channels, the subscriber can be allocated to one of the multiple channels while maintaining an adequate level of service. In that case, if the parameters of the best channel of a subscriber having a lower priority are the same as channel allocated to the subscriber, having a higher priority, and if the subscriber having the second highest priority, there is a big difference between the best channel and the second best channel, a better solution may be issued is of the subscriber, having a higher priority, its second best channel and allocating a subscriber having a lower priority, it is the best channel. For example, if the subscriber 1 has almost the same characteristics of the channel for channels 2 and 3, and subscriber 2 with the following account lower priority, is much more important characteristics of the channel to channel 3, then the subscriber 1 can be allocated to channel 2, and subscriber 2 can be allocated to channel 3.

Another algorithm of distribution channels, the subscriber with the highest priority, said available channels, which provide the desired operating characteristics (similar to the level of the above channels with equal parameters). Then the subscriber with the following in order of lower priority notes acceptable channels. Then carry out the distribution channels in such a way that first of all channels provide the subscribers with a lower priority, and the channels needed to subscribers that have a higher priority reserve.

In another algorithm, distribution channel selection of TV channels active subscribers in the cell, cellular, carry out a better way by taking into account a large number of permutations of distribution channels for the group of active subscribers in the cell cellular connections is I. In this case, the decision about which channel should be allocated to a specific subscriber, take not only on the basis of the characteristics of the channel and the priority of the subscriber. In one of the embodiments of the invention, the priority of the subscriber can be converted to a weighting factor, which is used to recalculate the characteristics of the channel when the calculations performed in the operations of the distribution channels in the cell cellular.

In this and in other embodiments, implementation of the present invention to reduce the interference among the subscribers in adverse conditions, carry out adaptive speed reduction transmission (also referred to here as the "darkening of the cell ("cell dimming")) or off (also called "locking cells("cell blanking")) those transmitters in the cells of the cellular communication that do not allow the specified parameter value for subscribers located in adverse conditions. "Blackout" or "lock" cell cellular communication can be accomplished in several different ways. In one of the embodiments of the invention collect information from the existing system subscribers and perform "burn", or "locking" the minimum number of cells cellular, which provides basic necessities for all subscribers, finding the, for example by transferring them in service. Control cells for cellular communication may be accomplished via a centralized control or distributed control.

In one of the embodiments of the present invention "dimming" or "lock" cell cellular provide by collecting information about the environment interference (for example, about the environment of the transmission loss of signal) for each subscriber. For example, each user can carry out the measurement of the signal level of each cell cellular greater than a specific threshold value. This measurement signals received from subscribers, transfer, can be performed by the cell provider. The information collected may be used to assess the relationship N/a for the specific subscriber in the case when functions only one subset of cells of the cellular communication. This information is then used to select the subset of subscribers for which the transfer is carried out in a given time interval, which ensures maximum increase system throughput for a given set of constraints.

In the above examples of embodiments shown specific ways of combining some of the features of the present invention. The integration of the various features and embodiments to which the present invention to implement them in many different communication systems may be implemented in a variety of ways.

Improvements provided through the adaptive reuse

According to some features of the present invention provide adaptive allocation of available resources of the system, whereby to provide higher efficiency and compliance with the requirements of the system. To ensure high efficiency spectral range, it is desirable to use the ratio of reuse as much as possible close to unity, providing, however, compliance with the criteria of efficiency of functioning. For conventional non-adaptive schemes reuse the reuse factor is typically set such as to ensure compliance with the requirements regarding the minimum data transfer rate for a given percentage of the service area. In the case when conventional non-adaptive scheme re-use is designed in such a way that ensures satisfaction of the requirements for the worst case (for example, to increase the probability of breaking the link did not exceed 1%), it is very inefficient, because it does not allow flexible adaptation of available resources to changing conditions in the system necessary to ensure high efficiency COI is whether the spectral range.

Assessment improve average performance provided by way of adaptive reuse, which is proposed in the present invention, may be performed by system simulation Monte Carlo method, in which the estimated value of the average degree of reuse is a function of relationship N/a required to meet the requirements of a particular minimum data rate (i.e. the given parameter values). For this simulation set the reuse factor, representing the ratio of the number of active cells cellular to the total number of cells of the cellular communication. When modeling systems perform an assessment of the large number of options for the implementation of the distribution graph (or simply variants of implementation).

For ideal cellular communication system having a layout of cells of a cellular communication in the form of hexagons, and each cell of the cellular communications which use the same frequency can be calculated distribution of values of the ratio N/a provided inside the ideal cell cell communication. The value of the ratio N/reached any specified subscriber depends on the path loss, which for terrestrial cellular systems obyknoveniyu proportional to d in degrees from the third to the fourth (d 3to d4), where d is the distance from the subscriber to the radiator. In the simulation in each case the implementation of the subscribers have uniformly in each cell of the cellular communication. Subscribers have the effective width of the beam pattern of the receiving antenna, is 30 degrees. In the cells of the cellular communication use omnidirectional antennas. The slope of the loss L on the track, expressed in decibels (dB), equal to 35 dB at tenfold increase of the distance d of the subscriber to the cell provider. Loss Lm(k) on the track for a subscriber k from cell m cell communication can be expressed as follows:

Lm(k)=35·log10(dm(k)).

Loss on the road are randomly changes due to the presence of artificial or natural barriers on the track (tracks) radiowave propagation. Modeling these random changes are usually carried out through a process of random "shade" with a lognormal distribution and the standard deviation equal to 8 dB. Actual losses on the roadrepresents the sum of the values of Lm(k), expressed in decibels (dB), and a random variable x having a normal distribution, a mean value of zero and standard deviation equal to 8 dB, and can be expressed in the following is ideal:

=Lm(k)+xm(k).

The resulting distribution of values of the ratio N/P, we obtain for the layout of cells of a cellular communication in the form of perfect hexagons in the presence of omnidirectional antennas in the base station and the process of "shading" with standard deviation equal to 8 dB, is shown in Fig.7.

The maximum transmit power of the cell cellular normalized to equal unity, and the power of Im(k) the signal from cell m cell communication and received by the subscriber k, defined by the following expression:

Im(k)=.

The main cell of the cellular subscriber is the cell to cell communication, which corresponds to the highest level of the received signal, which can be expressed in the following form:

Adjacent cells of the cellular network provide members of the equation, due to noise and maximum power of interference from these cells cellular can be expressed as follows:

For each option, the implementation used in the simulation, the subscribers in each cell of the cellular communication system, placed randomly (e.g., distribute evenly). Then perform an assessment of the average path loss from each of the cells and cellular communication to each subscriber.

The estimate of the power of signals transmitted to each subscriber, can be done in several ways. When modeling the estimation of the power transmission performed on the assumption that transmission is performed with full power, i.e., that the subscriber estimates of the levels of the signals from each cell in the cellular communication based on the assumption that transmission is performed with full power. With this in mind, some subscribers in favorable conditions, which contribute will have the following values of relationship N/a, which exceeds the preset value. In these cases, the cell provider may reduce the transmit power by an amount corresponding to the available energy reserve for that person (that is to reduce the difference between the current ratio N/P and a set value of the parameter). The actual value of the ratio N/P for the subscribers of the system will exceed that calculated in the simulation, because not all cell cellular will work with full transmit power. There is also the possibility of a more precise definition of the level of power required for each subscriber, which can lead to greater efficiency spectral range.

Each variant implementations for each subscriber do have an order which their transmit power cell cellular disruptive. Then the adaptive algorithm reuse, used to model, perform a random selection of one number from which to start the process. For this caller to determine the minimum number of cells for cellular communication, which should be turned off (i.e. disabled transmitter) in order to ensure the specified parameter value. This can be achieved by iterative calculation of the evaluation values of the ratio N/P for that person, through the increase in the interference power on the basis of an ordered list of values of the power cell cellular interfering (e.g., ordered, starting with the lowest to the highest transmit power). In that case, if for each measured cell cellular measured value of the ratio N/P is the result of incorporating cell cellular lower than the specified value, then the current and other interfering cell cellular contained in the ordered list for that subscriber is disconnected. Then in the modeling process carried out by random selection of another cell cellular from the list of other active cells cellular and continue the process until, until you have exhausted all the active cell of the cellular communication for the implementation of the evaluation. For each option, the implementation of register reuse factor, defined as the ratio of the number of involved cells cellular to the total number of cells cellular.

On Fig shows graphs of the average values of the coefficient of reuse from the set of parameter values for two different scattering conditions. On the chart, marked as "the absence of multipath propagation", it is seen that for the given parameter values smaller than 12 dB, the reuse factor is very close to 1, 0. When increasing the set value of the parameter you want to disable a greater number of cells to achieve the specified parameter values, which leads to the decrease of the coefficient of reuse. This adaptive reuse provides significantly higher efficiency spectral range than the non-adaptive algorithm reuse. Also you can see that the dominance of dispersion due to multipath propagation, the average value of the reuse factor is reduced. This is because when using directional antennas provide isolation from cell cellular interfering, is less effective, because of what asianam energy randomly. In the presence of scattering to provide a given value of the parameter you want to disable, on average, a greater number of cells cellular.

Table 13 shows the achievable values of efficiency spectral range obtained from simulation using an adaptive algorithm reuse. In Table 13 the efficiency spectral range calculated for different values of the parameter in the range from 10 dB to 26 dB in increments of 2 dB. The calculation of the values shown in Table 13, is made for the absence of multipath propagation and with the assumption that the system provides the function of each communication channel at the specified the specified value.

The second column shows the average value of the reuse factor corresponding to the specified parameter value, which is determined on the basis of Fig for each given value of the parameter. In the third column lists the values of the efficiency of modulation for a given parameter values taken from Table 1.

Efficiency spectral range is calculated by multiplying the average value of the reuse factor on the efficiency of the modulation. For example, for a given value pairs of the tra, equal to 14 dB, the average value of the reuse factor, obtained from Fig, equal to about 0.95. According to Table 1, to ensure CPOB equal to 1%, using an 8-position FMN, which correspond to the efficiency of modulation of 3 bit / sec/Hz, the value of the ratio N/P must be equal to at least 12,6 dB (when using 16-point KWAME it should be equal at least to 14.3 dB). Therefore, the calculated value of efficiency spectral range equal to 2.85 (i.e. 0,95·3).

Table 13
The specified parameter value (DB)The average value of the coefficient reuseEfficiency modulation (bit / sec/Hz)Efficiency spectral range (bit / sec/Hz per cell provider)
100,9921,98
120,9821,96
140,9532,85
160,9043,61
180,8354,16
200,745 3,69
220,6463,83
240,5463,24
260,4562,68

When comparing the efficiency of the spectral range, the corresponding adaptive algorithm reuse, simulation was executed with efficiency spectral range obtained by conventional non-adaptive algorithm reuse, you can easily notice the efficiency of the spectral range. In the adaptive algorithm re-use the specified parameter value virtually guarantees (i.e. the probability of breaking the link approximates 0, 0) that in the worst case for a subscriber can be provided with its requirements in respect of the minimum values of the performance variables that can be set as required by a particular minimum data rate for a particular percentage of time.

It should be noted that according to Table 13 maximum efficiency spectral range reaches at a given parameter value equal to 18 dB. When this predetermined value each communication channel functioning of the et efficiency modulation, equal to 5 bits per second/Hz. The average value of the coefficient re-use when working with this specified value is equal, approximately, 0,83, giving a total efficiency spectral range equal to 4.16 bit / sec/Hz per cell cellular. Non-adaptive algorithm reuse provides a much lower efficiency spectral range than this algorithm. For example, when using a schema re-use 7 cells cellular communication can be achieved efficiency spectral range, is 0.82 bit / sec/Hz per cell cellular at the same probability of breaking the link, equal to 1%. Therefore, this adaptive reuse provides almost five-fold increase efficiency spectral range compared to the non-adaptive algorithm reuse, and lower the likelihood of breaking the link.

When modeling optimization was not performed. Select subscribers for which the process was carried out at random, and search "best" set off cell cellular was not conducted. Through a more intelligent control algorithm can find better solutions than Arihant solutions with a random choice, used in the simulation.

Can be used and suboptimal control algorithms that can provide performance close to those that get through the optimal solution. It is also advisable to reduce the complexity of the control algorithm and to reduce the dependence on the procedures for the approval of the cells of the cellular communication performed in real-time. You can try to make it through decentralization of resource allocation, the triage and distribution channels.

Another set of procedures for the simulation was performed for five different algorithms reuse in a communication system with multiple inputs and multiple outputs (MVPS), such as that described in the aforementioned application for U.S. patent No. 09/532492.

On Figa shows a graph of the dependence of the bandwidth of the subscriber from the relations N/a for communication systems MVPS 4x4 with four transmit antennas and four receiving antennas.

On Figb depicts a diagram showing the arrangement of the cells of the cellular communication that is used for simulation. When modeling the group consisting of 21-th of the Central cell of the cellular communication (i.e. the shaded cluster Figb)is inserted into the infinite plane, consisting of cells of the cellular communication (that is, m is one hundred perfect arrangement of cells cell communication in the form of hexagons). Provide measurements of performance for subscribers in the Central cluster, consisting of 21-th cell of the cellular communication. Calculation of capacity when receiving from the primary cell and cellular components of the interference caused to neighboring cells and cellular communication may be performed as described above.

Evaluation of the characteristics of the channel at a particular cell of the cellular communication subscribers in the cell of the cellular communication can be performed using the specified coefficients decrease the transmission power and algorithm reuse. Prioritizing subscribers carry out based on the calculated characteristics of the channels and other factors as described above. The allocation of channels to subscribers effected on the basis of priorities of active subscribers in the cell cellular communication, starting with the subscriber with the highest priority to the subscriber having the lowest priority. The measured ratio N/(C/I) for a specific user k, which allocates the channel n in the cell m cell communication, set the following expression:

where βi(n) - reduction ratio power transmission used in channel n cell 1 cell connection.

For each variant implementation register a series of performance indicators (the example the average throughput in the cell cellular distribution of values of the ratio N/P for subscribers, the distribution of speeds for subscribers and so on) for each of the subscribers in each of the 21-th cell of the cellular communication. To ensure reliability of performance carried out modeling of a large number of implementation options.

When modeling assessment of several algorithms reuse. These algorithms reuse are characterized by the following parameters:

Algorithm And reuse: the reuse factor equal to one, the distribution channels perform random law, and control of power transfer is not carried out.

The allocation of channels to subscribers perform a random act. Apply the reuse factor equal to one, therefore the cells of the cellular communication can allocate to subscribers of any of the available channels. Power control is not carried out, and all channels work with full transmit power. Subscribers are permitted to operate at the maximum data transfer rate (as shown in Figa), valid when they reached the ratio of N/P.

Algorithm B reuse: the reuse factor equal to one of the races is the definition of channels perform a random act and manage transmit power.

Similar to the algorithm And re-use except that for subscribers having positive power supply (measurement of energy stores performed assuming that all the cells of the cellular communication work with full capacity) use control transmit power. The transmit power for the selected subscribers channels is reduced to a level that is necessary to achieve the specified parameter value equal to 15 dB.

Algorithm In reuse: reuse scheme with 3 cells cellular, perform the reduction of power transmission, distribution channels operate on the basis of the characteristics of the channels, priorities subscribers set on the basis of relationship N/a, and control of power transfer is not carried out.

Use the reuse scheme with Nr=3, resulting in the pictured Figb cluster, consisting of 21-th cell, cellular, get 7 Podkletnov, each of which consists of 3 cells cellular communication. Each cell of the cellular communication, included podcaster, produce by Ns=4 channel, resulting in get that the total amount available for distribution channels in the cell cellular is equal to Nc=12. Apply structure to decrease the transmission power specified in Table 4, which you olnine thus, that provides the specified parameter value equal to 15 dB, in 11 of these 12 channels. The operation of the distribution channels is performed based on characteristics of the channel for the expected values of the ratio N/P, given by equation (12). The priorities of subscribers is determined on the basis of the characteristics of the channel averaged over these 12 channels. Power control is not carried out and used for each channel coefficients decrease the transmission power, which is shown in Table 4 remain unchanged.

Algorithm G reuse: reuse scheme with 3 cells cellular, perform the reduction of power transmission, distribution channels operate on the basis of the characteristics of the channels, priorities subscribers set on the basis of relationship N/a and manage capacity.

Similar to the algorithm In the re-use except that for subscribers having positive power supply, manage transmit power. Factors decrease the transmit power used for each channel, reduce (that is, reduce the transmit power to a level that is required to achieve the specified parameter value equal to 15 dB.

Algorithm D reuse: reuse scheme with 3-what I cells, perform the reduction of power transmission, distribution channels operate on the basis of the characteristics of the channels, priorities subscribers set based on the average potential throughput and manage capacity.

A similar algorithm G reuse except that the distribution channels is performed with the use of priorities subscribers, through which display the total "potential" bandwidth for each subscriber for more than 10 intervals of the distribution (for example, 10 frames). Potential throughput gain on the basis of this "potentially feasible" data transmission speeds. In each case realization for a subscriber consistently perform 10 distribution channels. For the first frame of the priorities of subscribers is determined on the basis of the averaged characteristics of the channel, calculated using equation (12). In subsequent frames, the priorities of the subscribers set by the amount of potential bandwidth provided to the subscriber in all previous frames within averaging interval equal to 10 frames. For example, the priority of the subscriber in the 5-th frame is equal to the sum of the potential throughput gain is by the subscriber in frames 1, 2, 3 and 4.

Table 14 shows the values of the likelihood ratio N/P is smaller than the set value of the parameter is equal to 15 dB, for different values of load, the cell cellular phone and for each of the five above algorithms reuse. For specific values of the load for the largest percentage of subscribers for which the ratio N/P is lower than the specified value, obtained using the algorithm And reuse. The application of the algorithm B reuse indicates that the presence of power control significantly reduces the percentage of subscribers for which the ratio N/P is lower than the set value of the parameter. The application of the algorithm To reuse shows that through the use of the invariant factors decrease the transmission power without power control ensures reduction of the number of subscribers for which the ratio N/P is lower than the specified value, compared with the results obtained by using the algorithm And reuse. The application of the algorithm G reuse indicates that the use of power control in conjunction with the coefficients decrease transmit power provides better is the performance compared to algorithm B reuse, which only use power control. And, finally, the application of the algorithm On reuse indicates the presence of a slight deterioration compared with the algorithm G reuse, which is caused by "shuffling" of subscribers on channels due to the reordering of priorities within averaging interval equal to 10 frames. However, the "shuffle" provides improved average performance for some subscribers, disadvantaged, and this, as described below, reduces the likelihood of breaking the link to these subscribers.

Table 14
Load cell cellular (number of subscribers)The algorithm And reuseAlgorithm B reuseThe algorithm To reuseAlgorithm G reuseAlgorithm D reuse
10,0128100,0056190,0338100,0055240,004286
20,0311430,0122140,0369050,0086670,007714
30,0441590,018079 0,0350790,0130950,008619
40,0607740,0244760,0458330,0158690,017655
50,0774190,0297240,0422860,0171050,015229
60,0944130,0365160,0469840,0195950,020825
70,1072310,0445850,0517690,0199520,023014
80,1287020,0523510,0622620,0233930,026226
90,1508470,0593860,0702120,0260740,035439
100,1684190,0657810,0807140,0313140,042857
110,1913720,0744810,1000430,0368740,053866
120,2092460,0811900,1446430,0555120,082306

Bandwidth for each of these five algorithms are typically associated with a specific distribution, with specific median (or average) value, a specific standard deviation and the tail part od the CSO or both ends of the distribution. The shape of the distribution depends on the used algorithm reuse. Algorithm reuse, in which capacity management or decreases the transmission power is not used, and subscribers are allowed to transmit with the maximum achievable data rate, due to their ratio N/P, the distribution has a higher mean and higher standard deviation. A more complete control (for example, power control and reduction of transmit power) usually leads to a reduction of the average value of the distribution (in the limit of power transmission for subscribers located in favorable conditions, and therefore, their data rates), as well as to the reduction of the standard deviation of the distribution (as improve the performance of the subscribers in adverse conditions due to the use of control). Applied management affects the shape of the distribution and, consequently, on the performance of the system.

Table 15 shows the values of the average bandwidth for each channel depending on the load for each of these five algorithms reuse. When applying the algorithm And re-use of the Finance the average channel capacity varies from 1.66 bits per second/Hz at low load values up to 1.33 bits / second/Hz at full load. When modeling algorithm And re-use it was assumed that the data rate of the subscriber is changed in accordance with the reached value of the ratio N/(under Figa). Of these five algorithms reuse algorithm And reuse provides the highest average throughput, but the available range of data rates for a subscriber in each channel is great. This means that different subscribers have different levels of service depending on the value of relationship N/a achieved in the allocated channel.

Algorithms B-D re-use shall limit the transmission power when attempting to achieve a given parameter value equal to 15 dB, which corresponds to a maximum bandwidth equal to 0.96 bit / sec/Hz per channel. As shown in Table 14, by limiting the transmission power provide reduced noise levels and a decrease in the percentage of subscribers that have a low ratio of N/P. Limitation of transmission power leads to a decrease in the average bandwidth for each channel is compared with the one obtained using the algorithm And reuse. The performance data shown in Table 15, indicate that even when p is lnai load average throughput in each channel is very close to the value equal to 0.96 bit / sec/Hz per channel.

Table 15
Load cell cellular (number of subscribers)The algorithm And reuseAlgorithm B reuseThe algorithm To reuseAlgorithm G reuseAlgorithm D reuse
1kzt1.6640,9570,9490,9570,957
21,6480,9550,9510,9560,957
31,6350,9530,9490,9550,956
41,6010,9510,9460,9550,954
51,5630,9500,9480,9540,954
61,5280,9480,9470,9530,953
71,4980,9460,9460,9530,953
81,4610,9440,9450,9520,952
9 1,4220,9420,9430,9520,950
101,3950,9400,9400,9510,947
111,3620,9380,9370,9500,945
121,3350,9360,9270,9460,937

In many communication systems, the requirement regarding the minimum average throughput submit to all the subscribers in the service area. Therefore, in addition to the analysis of the average bandwidth in each channel, an important factor is usually an analysis of the percentage of those subscribers for which the required average throughput is greater than some minimum value.

On Figv the graphs of the probability that the average bandwidth for a subscriber falls below the value indicated on the X-axis, for each of the five algorithms reuse. On FIGU shows the resulting values for the cells of the cellular communications in the presence of a full load (that is, in each cell of the cellular communication all 12 channels are busy), and demonstrated effectiveness of each of the algorithms reuse of satisfying trebovaniya the ratio of the minimum values of the average throughput. For example, the algorithm And reuse provides the minimum average throughput 0.7 bit / sec/Hz per channel, for 90% of subscribers, and the algorithm D reuse provides the same bandwidth for 99% of subscribers. Another way of assessing results is the analysis of the minimum average throughput provided for a specific percentage of subscribers (for example, for 99% of subscribers or for the required service area, equal to 99%). The desired service area, equal to 99%, in the algorithm And reuse provide at minimum average throughput equal to 0.25 bit / sec/Hz per channel, whereas in algorithm D reach threefold increase of this magnitude, that is, of 0.75 bits per second/Hz per channel.

The design of the system

The above-described invention can be implemented in numerous communication systems, for example, those described in the aforementioned patent U.S. No. 09/532492 and No. 08/963386 and in U.S. patent No. 5103459, the rights to all of which passed to the patentee of the present invention.

On Fig shows a diagram of a system 1400 communications with multiple inputs and multiple outputs (MVPS), which can be realized by some of the distinctive characteristics and embodiments of the present from which bretania. As described in the aforementioned application for U.S. patent No. 09/532492, the system 1400 may operate in such a way that ensures the availability of aggregate explode on antennas, frequency and time diversity, whereby increasing the efficiency of the spectral range, increase throughput, and increase flexibility.

As shown in Fig, the system 1400 contains the first communication system 1410, support communication with the second system 1420. System 1410 includes a device 1412 data (during transmission), which: (1) receiving or generating data; (2) performs data processing to create an explode on antennas, frequency, or temporal diversity, or their combination; and (3) supply the processed modulation symbols in several modulators (MOD) (MOD) a-1414t. Each modulator 1414 performs additional processing of the modulation symbols, and performs the generation of a modulated radio frequency (RF) signal suitable for transmission. Then transfer the modulated RF signals received from the modulator a-1414t, 1420 through the respective antennas a-1416t through channels 1418 connection.

In the embodiment shown in Fig, the system 1420 includes multiple receiving antennas a-1422r, by means of which receive p is rednich signals and supply the received signals to respective demodulators (DEMOD) (DEMOD) a-1424r. As shown in Fig, each receiving antenna 1422 may receive signals from one or more transmitting antennas 1416 that depends on a number of factors, for example, the mode used in the system 1410, from the orientation of the transmitting and receiving antennas, parameters of the communication channels, etc. Each demodulator 1424 performs demodulation of the corresponding received signal using a demodulation algorithm, which is complementary to the modulation algorithm, which was used in the transmitter. Then demodulated symbols received from the demodulators a-1424r, served in the device 1426 data (at reception), which performs additional processing of symbols to generate output. A more detailed description of the procedure of processing data in the transmitting and receiving devices shown in the aforementioned application for U.S. patent No. 09/532492.

In the system 1410 to the device 1412 data to the modulators a-1414t connected processor 1430 resource allocation. The processor 1430 resource allocation collects data, which is judged on the mode of operation of the system, determines the plan re-use, receives the incoming subscriber requests to perform data transfer, sets the priority of the requested transmission, allocates channels and the active subscribers and negotiates data transfer operations. The processor 1430 resource allocation may be performed in such a way that it was implemented various features and embodiments of the above invention.

In the system 1420 to the device 1426 data and (possibly) to the demodulators a-1424r connected processor 1440 determine the characteristics of the channel. The processor 1440 characterization of the channel is processing the received samples to determine various characteristics of the received signal and/or communications channel (for example, a relationship N/a, EIC, etc). The processor 1440 determine the characteristics of the channel may be, for example, is designed so that during operation determines the value of relationship N/a for signals from different cells of the cellular communication, with which the system 1420 may communicate, which can be used to select a primary cell cellular. The processor 1440 determine the characteristics of the channel may also determine interference from adjacent cells of the cellular communication so that in the cell (cell) cellular communication that creates excessive noise, could be sent a request to decrease the power of its transmission or its disconnection that allows you to achieve a given value of the parameter in the system 1420. System 1420 transmits certain of its parameters in the appropriate cell (s) Sotovaya.

On Fig shows the process of transferring only the communication from the system 1410 system 1420. This arrangement can be used to broadcast data and for other applications in which the data transfer is carried out only in one direction. In the system of two-way communication also create and upward communication line from the system 1420 system 1410, although Fig it is not shown for reasons of simplification of the drawing. In the system of two-way communication systems each 1410 and 1420 may function as a transmitting device or a receiving device, or simultaneously as both of them, depending on what operation is implemented by device: data transmission or reception.

For simplicity, it is shown that the system 1400 relation contains only one transmitting device (i.e. system 1410) and only one receiving device (i.e. the system 1420). However, there may be other variations and configurations of the communication system. For example, in multi-drop communication system with multiple access can be used one transmitting device, transfer data simultaneously to multiple receivers. In addition, similar to the way a soft transfer service in the system mdcr, corresponding to the standard IS-95, the receiving device can perform on the simultaneous reception of signals, transmitted from multiple transmitting devices. The communication system according to the present invention can contain any number of transmitting and receiving devices.

Each transmitting device may contain one transmitting antenna or multiple transmitting antennas, such as shown in Fig. Each receiving device may also contain one receiving antenna or multiple receiving antennas, as again shown in Fig. For example, the communication system may include a Central system (i.e. same base station in the system mdcr standards (IS-95)with multiple antennas through which transfer data in the receive data from multiple remote systems (i.e. subscriber devices, similar to remote stations in the system mdcr), some of which may contain one antenna, and the other can contain multiple antennas. Increasing the number of transmitting and receiving antennas usually leads to a stronger separation of the antennas and to improve performance, and a detailed description of this is provided in the aforementioned application for U.S. patent No. 09/532492.

On Fig shows a block diagram of a variant of implementation of the device 1412 data and modulator 1414 from the system 1410 shown in Fig. The total input data stream that contains the data intended for transmission through a system 1410, served in the demultiplexer (SLE) (DEMUX) 1510 in the device 1412 data. The demultiplexer 1510 performs the division of the stream of input data into multiple (K) of the flow channel data S1-SK. Each flow channel data may correspond to, for example, the transmission channel service signal, a broadcast channel, a telephone connection, voice communication or data transmission schedule. Each flow channel data is served in the appropriate device 1512 encoding, which encodes the data using a specific encoding algorithm.

The encoding operation may include the operation of encoding with error correction or the operation of encoding with error detection, or both of these operations, which are used to improve the reliability of the communication channel. In particular, the operation of the encoding may include, for example, the interleave operation, convolutional coding, fast (turbo) coding, trellis coding, block coding (for example, coding reed - Solomon)coding with a cyclic redundancy check code (CEC) (CRC) and others. A more detailed description of the operation of the accelerated encoding is shown in U.S. patent No. 6304991, which is called "accelerated Device is ogopogo alternation using linear congruential sequences" ("Turbo Code Inter leaver Using Linear Congruentlal Sequences"), and in the document entitled "Variant of the standard system of radiotelephone communication mdcr-2000, submitted by the Radiocommunication sector of the International telecommunication Union (ITU)" ("The cdma2000 ITU-R RTT Candidate Submission"), which is called below the standard IS-2000.

The encoding can be performed componentwise, i.e. for each flow channel data, as shown in Fig. However, it can also be made as a separate encoding of the aggregate input, multiple streams of channel data stream of channel data, some set of antennas, some set of subchannels, some set of subchannels and antennas, each subchannel, each modulation symbol, or any other single element of time, space and frequency. After that, the encoded data of the devices a-C coding served in the device 1530 data processing, which performs data processing by generating modulation symbols.

In one of the embodiments of the present invention, the device 1530 data highlights for each flow channel data one or more subchannels, one or more time slots and one or more antennas. For example, for a stream of channel data corresponding to the telephone call in the voice communication mode, the device is istwo 1530 data can allocate one sub-channel in a single antenna (in the case if the transmission diversity is not used) or multiple antennas (if used transmission with diversity) within such a large number of time intervals needed for this session telephony. The selection of a particular sub-channel (subchannel) in one or more antennas for the stream of channel data corresponding to the transmission channel service signal or the broadcast channel, the device 1530 data may exercise again depending on use if the transmission diversity or not. After that, the device 1530 data allocates the remaining resources to the flow channel data corresponding to the transmitted data. Due to the fact that data transmission is carried out in the form of packets, and due to the permissibility of the presence of large delays, the device 1530 data can allocate resources in such a way that will achieve the goal of creating high-performance and highly efficient system. Consequently, the "order" data set in such a way as to ensure the achievement of these goals in relation to the system.

After allocation for each flow channel data corresponding to a time interval (time interval), the sub-channel (subchannel) and antenna (antennas) osushestvlyaetsya data stream of channel data using the modulation on many carriers. In one of the embodiments of the invention use modulation by means of an orthogonal multiplexing frequency division (OMCR), which provides numerous advantages. In one embodiment, the method of modulation by OMCR perform grouping data from each stream of channel data into blocks, and each block has a specific number of information bits. Then for the information bits of each block allocate one or more subchannels corresponding to the flow channel data.

Then perform demultiplexing of bits in each block on separate subchannels and each subchannel transmit, in principle, a different number of bits (i.e. depending on the value of relationship N/a for sub-channel and do the processing MVPS). For each of these subchannels carry out the grouping of bits into modulation symbols using a specific algorithm modulation (for example, M-QPSK or M-KWAME) is set in accordance with this subchannel. For example, when 16-position KWAME set of signals consists of 16 points on the complex plane (i.e. a+j·b), and through each point on the complex plane transmit 4 bits of information. In the processing mode MVPS each modulation symbol in the sub-channel which is a linear combination of modulation symbols, each of which can be selected from different sets.

The combination of L modulation symbols forms an L-dimensional vector V. Each vector component V modulation symbols associated with a particular subchannel, having clearly given frequency or tone on which the transfer of modulation symbols. All L modulation symbols from this set are orthogonal with respect to each other. In each time interval and for each antenna L modulation symbols corresponding to the L sub-channels, are combined in the symbol OMCR using fast inverse Fourier transform (BOPF). Each character OMCR contains data from the flow channel data set in correspondence with the L sub-channels.

A more detailed description of the modulation by OMCR given in the article John Akingbala (John ..Bingham), entitled "Modulation of many supporting data: the Concept, the realization of which came", Journal on communications IEEE (Institute of electrical engineers and electronics). May 1990 ("Multi-carrier Modulation for Data Transmission: An Idea Whose Time Has Come", IEEE Communications Magazine, May 1990).

Thus, the device 1530 data receiving and processing the encoded data corresponding To the channel data streams, resulting in create NT of vectors of modulation symbols with V 1for VNTone vector of modulation symbols for each transmit antenna. In some embodiments of the invention some of the vectors of modulation symbols may have duplicate information on specific subchannels for different transmitting antennas. The vectors V1-VNTthe modulation symbols are served in the appropriate modulators a-1414t.

In the embodiment shown in Fig, each modulator 1414 contains the device 1520 BOPP, generator 1522 cyclic prefixes and device 1524 transform with increasing frequency. The device 1520 BOPP converts the received vectors of modulation symbols in the display in the time domain, which are called symbols OMCR. The device 1520 BOPP can be performed in such a way that provides BOPP any number of subchannels (for example, 8, 16, 32 etc). In one of the embodiments of the present invention to create a character for a specific antenna, generator 1522 cyclic prefixes performs for each vector of modulation symbols is transformed into a symbol OMCR, repeating part of the display character OMCR in the time domain. The presence of the cyclic prefix ensures that the transmitted symbol retains its orthogonal properties occurs when rsbr the sa values of the delays of multipath propagation, thus providing a higher throughput, despite the presence of undesirable effects caused by the transmission path. How to implement device 1520 BOPP and generator 1522 cyclic prefixes are known in the art, and therefore detailed description here will not.

Then perform the processing of the representations of symbols in the time domain received from each generator 1522 cyclic prefixes (i.e. characters, intended for transmission from each antenna) through the device 1524 transform with increasing frequency, convert to analog, high-frequency modulation and coordination (for example, by amplification and filtering), resulting in a carry generating modulated high-frequency signal, which is then passed from the respective antennas 1416.

On Fig also shown a block diagram of a variant of implementation of the device 1530 data. The encoded data for each flow channel data (that is, the encoded data stream, X) is served in the appropriate device 1532 processing channel data. In that case, if the flow channel data should be carried out on multiple subchannels and/or through multiple antennas (without duplicating at least some of the transferred data is), the device 1532 processing channel data performs division of the stream of channel data into multiple (up to L•NT) substream data. Each subflow data corresponds to the transmission on a particular subchannel in a particular antenna. In typical embodiments of the invention, the number of data substream perform less than L•NTbecause some of the subchannels used to transmit service signals, voice and other data types. Then perform the processing of data substream, through the generation of the respective substream for each of the assigned subchannels, which are then served in the device 1534 Association. Through devices 1534 Association shall combining the modulation symbols intended for each antenna, into a vector of modulation symbols, which then creates a stream of vectors of modulation symbols. Then NTflow vectors of modulation symbols for NTantennas are served in blocks subsequent processing (i.e. modulators 1414).

In a variant of embodiment, which provides the most flexibility, better throughput and high efficiency, the choice of modulation symbol intended for transmission in each time interval, for each subchannel can be done the updates individually and independently. This distinctive feature allows you to provide a more complete use of available resources in all three dimensions of time, frequency and space. Therefore, the number of information bits transmitted by each modulation symbol may be different.

In the embodiment of the invention shown in Fig, demultiplexer 1510, with the device 1530 data and devices 1524 transform with increasing frequency is connected to the processor 1430 resource allocation. Once you have determined the sequence of data transfer, the processor 1430 resource allocation sends data intended for transmission of rotation, in the demultiplexer 1510, through which fulfill their separation by respective dedicated channels. In addition, the processor 1430 allocation of resources manages the processing of these data, based on the quality parameters of the communication channel obtained as a result of the operation definition. For example, the processor 1430 resource allocation can specify the algorithm used modulation (for example, M-FMN, M-KWAME) and data transfer rate for these transmissions. The processor 1430 resource allocation can also throw in device 1524 transform with increasing frequency command loss of performance re the ACI for some or all of the available channels, either disable them, by means which achieve the desired goals of the system.

Above it is shown that both the transmitting device and the receiving device are implemented by different processing devices that contain the data processing units of different types, device, encoding device BOPP, FFT device, demultiplexes, device Association, the CPU resource allocation, the processor determining the characteristics of the channel, etc., These devices can be implemented in various ways, for example through a specialized integrated circuit (SIS) (ASIC), digital signal processor, microcontroller, microprocessor, or by other electronic circuitry for performing the functions described here. The processing device can also be implemented by a generic processor or by a specialized processor that operates in such a manner that accomplishes the functions described here by execution of command IDs. Thus, the described processing devices may be implemented using hardware, software or their combination.

The above description of preferred embodiments of the present subramaniapuram person skilled in the art to implement or use the present invention. For specialists in this field of technology is the obvious ability to perform various modifications to these embodiments, as described here, the fundamental principles can be used in other variants of implementation without the need to create new inventions. Thus, imply that the present invention is not limited to demonstrated here variants of implementation, and it should provide the widest possible scope of patent claims corresponding to those disclosed here, the principles and elements of novelty.

1. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system that includes probabilities of occurrence of the corresponding load for the communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and ka is every the reduction ratio power transmission takes a value in the range from zero to one, and transfer across multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

2. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with many factors decrease the transmission power set partly on the basis of the required probability values to communicate and transfer across multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

3. The method of controlling the transmission in the system of relations is, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with many factors decrease the transmission power set partially based on one or more specific parameter values selected for multiple channels, each given value of the parameter corresponds to the ratio of the signal level of the carrier to the total noise and interference (N/a)required for data transmission, and determining one or more values of the parameter is carried out partly on the basis of the required probability values to communicate and transfer across multiple channels, power levels, which determine, at least, cha is in part based on many factors decrease the transmission power.

4. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, carry out transmission through multiple channels with power levels that define, at least partially based on many factors decrease the transmission power, calculates estimated values of the desired power level for each of the multiple channels, and estimates the required power level for a particular channel is calculated on the basis of the evaluation values of the ratio of the signal level of the carrier to the total noise and interference (N/a) for data transmission on a particular channel and carry out regulated the e many factors decrease the transmission power based on the estimated required transmit power levels for a variety of channels.

5. The method according to claim 4, characterized in that the calculation of the required power level for a particular channel is additionally carried out on the basis of the speed of data transmission on a particular channel.

6. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with this at least one channel set in accordance reduction ratio power transmission equal to one, whereby display the full transmit power, and the rest of the channels set in accordance factors decrease the transmission power smaller than the unit, and perform transmission on multiple channels with power levels, it is which determines, at least partially based on many factors decrease the transmission power.

7. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with many factors decrease the transmission power set by the dynamic method, whereby reflect changes in the communication system, and perform transmission on multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

8. The method according to claim 7, characterized in that the many factors decrease the transmission power set dynamic is a procedure, whereby reflect changes in the requirements for the performance of communication systems.

9. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with many factors decrease the transmission power set by the adaptive method, whereby to provide their estimated according to changes in the communication system, and perform transmission on multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

10. The method according to claim 9, characterized in that the set of coefficients mind is nisene transmit power set by the adaptive method, whereby to provide their estimated according to changes in the characteristics of devices in the communication system.

11. The method according to claim 9, characterized in that the many factors decrease the transmission power set by the adaptive method, whereby to provide their estimated according to changes in load mode in the communication system.

12. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with this regulate one or more factors decrease the transmission power on the basis of measured performance, and regulation of one or more coefficients mind is nisene power transmission performed on the basis of the calculated evaluation values or measured values of the ratio of the signal level of the carrier to the total noise and interference (N/a) and transfer to many channels with power levels that define, at least partially based on many factors decrease the transmission power.

13. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with this regulate one or more factors decrease the transmission power on the basis of measured frequency values of the erased frame (EIC) and transfer across multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

14. The method of controlling the transmission in the communication system, namely, that the Oprah is elaut one or more parameters of the communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, at that regulate one or more factors decrease the transmission power on the basis of measured performance, and regulation of one or more factors decrease the transmission power performed based on the calculated estimated values of risk communication and transfer across multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

15. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on many Cana is s, ask many factors decrease the transmission power for a variety of channels at least partially based on one or more parameters of the communication system, obtained in the result of the operation definition, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, thus to correct the interference by one or more channels one or more corresponding coefficients decrease the transmission power is set to zero during the selected time periods specified duration and transfer across multiple channels with power levels that define, at least partially based on many factors decrease the transmission power.

16. The method of controlling the transmission in the communication system, namely, that define one or more parameters of a communication system, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for a variety of channels at least partially based on one or is escolca parameters of the communication system, the resulting operation definitions, and each channel set in compliance with the appropriate reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with the reduction ratio of the transmission power of the specific channel is set equal to zero if the performance characteristics of this particular channel so much worse that become worse the specific threshold value, and perform transmission on multiple channels with power levels that define, at least partially based on many factors decrease power transfer.

17. The method according to item 16, characterized in that the reduction ratio of the transmission power of the specific channel is set equal to zero in the case, if the frequency of the erasing frames (EIC) becomes greater than a certain threshold EIC.

18. The method according to item 16, characterized in that the reduction ratio of the transmission power of the specific channel is set equal to zero if the probability of breaking the link to a particular channel becomes higher than a specific value.

19. The method of controlling the transmission is in the communication system, namely, that specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for multiple channels of each cell in the cellular communication schema reuse, at least partially based on one or more parameters obtained in the result of the operation definition, and each channel of each cell cellular assign a corresponding reduction ratio power transmission by which point the reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one and perform transmission from multiple cells of the cellular communication on multiple channels with power levels that define, at least in part on the basis of the corresponding coefficients decrease the transmission power, calculates estimated values of effective energy stock channel of communication for many spacecraft is Alov each cell in the cellular communication schema re-use and re-setting the coefficients decrease the transmission power for each cell in the cellular communication schema re-use on the basis calculated estimates of effective energy stock channel.

20. The method according to claim 19, characterized in that the calculation of estimates and repeated tasks performed repeatedly until then, until it is ensured satisfaction together the necessary conditions.

21. The method according to claim 19, characterized in that the calculation of estimates and repeated tasks perform repeatedly up until the values of effective energy supply of communication channels will not be within a specific threshold value.

22. The method of controlling the transmission in the communication system, namely, that specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters comprising values the relationship of the signal level of the carrier to the total noise and interference (N/a), through which characterize the receiving device in the communication system, or values of the probability of occurrence of the corresponding load in the communication system, or both of these values, perform the division of the available system resources on multiple channels ask many factors decrease the power the STI transmission for multiple channels of each cell in the cellular communication schema reuse, at least partially based on one or more parameters obtained in the result of the operation definition, and each channel of each cell cellular assign a corresponding reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one and perform transmission from multiple cells of the cellular communication on multiple channels with power levels that define, at least in part on the basis of the corresponding coefficients decrease the transmission power.

23. The method of controlling the transmission in the communication system, namely, that specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for multiple channels of each cell in the cellular communication schema reuse, at least partially based on the real the or more parameters, the resulting operation definitions, and each channel of each cell cellular assign a corresponding reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, with many factors decrease the transmission power for each cell in the cellular set partly on the basis of the ratio between the signal level of the carrier to the total noise and interference (N/a), through which characterize the receptors in the cell cellular one or more specified parameter values selected for multiple channels, the required values of the probability of breaking the link or their totality and transfer of a variety of cells of the cellular communication on multiple channels with power levels that define, at least in part on the basis of the corresponding coefficients decrease the transmission power.

24. The method of controlling the transmission in the communication system, namely, that specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each of the first cell of the cellular communication schema reuse define one or more characterizing parameters, perform the division of the available system resources on multiple channels, ask many factors decrease the transmission power for multiple channels of each cell in the cellular communication schema reuse, at least partially based on one or more parameters obtained in the result of the operation definition, and each channel of each cell cellular assign a corresponding reduction ratio power transmission through which indicate reduced power level relative to the maximum power level, and each reduction ratio power transmission takes a value in the range from zero to one, thus fulfilling the regulation of one or more coefficients decrease the transmission power for a particular cell of the cellular communication based on the measured or estimated values of the performance variables, the corresponding measured values of the frequencies erase frames (EIC), the probabilities of breaking the link or the ratio between the signal level of the carrier to the total noise and interference (N/a), or their combination and transfer of a variety of cells of the cellular communication on multiple channels with power levels that define, at least in part on the basis of the corresponding coefficients is of antov decrease the transmission power.

25. Way to manage multiple transmitting devices in the wireless communication system, which performs the division of the available system resources on multiple channels, specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters for each cell in the cellular communication schema reuse allocate a set of channels at least partially based on one or more parameters of the cell cell communication resulting from the operation definition, and for each cell in the cellular communication from schema reuse allocate the appropriate set of channels containing one or more channels on which the transmission can be carried out with the full power level, and one or more channels on which the transmission can be performed with reduced power levels and repeat the operation definitions, and selection, therefore, to reflect changes in the communication system.

26. Way to manage multiple transmitting devices in the wireless communication system, which performs the division of the available resources systems is on multiple channels, specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters for each cell in the cellular communication schema reuse allocate a set of channels at least partially based on one or more parameters of the cell cell communication resulting from the operation definition, and to reduce interference temporarily prohibit the transfer by one or more channels allocated to a particular cell of the cellular communication, and repeat the operation definitions, and selection, thus, to reflect changes in the communication system.

27. Way to manage multiple transmitting devices in the wireless communication system, which performs the division of the available system resources on multiple channels, specify the reuse scheme for communication systems, and reuse scheme contains many cells, cellular communication, for each cell in the cellular communication schema reuse define one or more characterizing parameters for each cell in the cellular communication schema reuse allocate scoop Prosti channels, at least partially based on one or more parameters of the cell cell communication resulting from the operation definition, and in the case where the bandwidth allocated set of channels does not meet the requirements necessary to ensure the transfer, the transfer of a particular cell of the cellular communication is performed in unselected her channel and repeat the operation definitions, and selection, therefore, to reflect changes in the communication system.

28. The method according to item 27, wherein selecting the unselected channel is carried out on the basis of estimated values of the operating characteristics of the selected channel.

29. The method according to p, characterized in that the selection unselected channel is carried out on the basis of the estimated value of the probability of employment of the selected channel of the neighboring cells of cell communication.

30. The method according to p, characterized in that the selection unselected channel is carried out on the basis of estimates of the relationship of the signal level of the carrier to the total noise and interference (N/a), which can be achieved in the selected channel.

31. The method according to p, characterized in that the selection unselected channel is carried out on the basis of estimates of the probability of breaking the link for the selected channel.

32. The method according to item 27, wherein the done the Ute reservation of one or more channels for the transfer of specific cell-cell communication during a specific period of time.

33. The method according to p, characterized in that the transmission of the neighboring cells of cell communication by one or more reserved channels prohibit during a specific period of time.

34. The method of providing data to many receivers in the communication system, namely, that specify the algorithm reuse, which is used for transmission of data to the set of receiving devices, and via a given algorithm reuse define specific schema reuse, the initial distribution of the available system resources and a set of operating parameters, one can also define one or more parameters of the communication system and ask the plan to reuse at least partially based on one or more characterizing parameters, and through the plan, reuse specify a particular schema reuse and initial layout cells for cellular re-use, derived from a given schema reuse, transfer to the set of receiving devices according to a predetermined algorithm reuse, perform an assessment of the performance of the communication system, determine whether the resulting assessment work is harakteristiki system within a particular threshold, and if the resulting evaluation of the performance of the system are not within a specific threshold, re-assignment algorithm reuse.

35. The method according to clause 34, wherein the operation of determining the parameters define the characteristics of the interference for a variety of receivers available in the communication system.

36. The method according to clause 34, wherein the carry out periodic updating one or more parameters to reflect changes occurring in the communication system.

37. The method according to clause 34, wherein when the set operation, the algorithm re-use additionally perform the division of the available system resources on multiple channels and for each cell of cellular layout cell cellular reuse allocate a set of channels at least partially based on one or more parameters obtained in the result of the operation definition.

38. The method according to clause 37, wherein the operation of determining the parameters determine the expected value of the probability of busy channel for the set of channels allocated to each cell in the cellular communication.

39. The method according to 38, characterized in that the expected value of the probability of busy channel ustanavli which are equal to unity for all channels for which no operation was performed to determine the parameters.

40. The method according to clause 37, wherein when a set operation algorithm reuse optionally set the set of coefficients decrease the transmission power, which are placed in correspondence to each of the selected set of channels.

41. The method according to clause 37, wherein the set of operating parameters includes a set of coefficients decrease the transmission power for each selected combination of channels.

42. The method of providing data to many receivers in the communication system, namely, that specify the algorithm reuse, which is used for transmission of data to the set of receiving devices, and via a given algorithm reuse define specific schema reuse, the initial distribution of the available system resources and a set of operating parameters, transfer to the set of receiving devices according to a predetermined algorithm reuse, perform an assessment of the performance of the communication system, for a particular cell cellular determine the values of effective energy supply of communication channels, frequency erased frames (EIC), the values of the probability of breaking the link or CPE is the throughput, or their combination, determine whether the resulting assessment of the performance of the system within a particular threshold, and if the resulting evaluation of the performance of the system are not within a specific threshold, re-assignment algorithm reuse.

43. The method of providing data to many receivers in the communication system, which performs the update of the first set of parameters used to establish the priority of the transmission data, establish priorities of transmission data, transmits through the channels specified in the result of the operation of the distribution, the set of receiving devices using the updated second set of parameters.

44. The method according to item 43, wherein the first set of parameters contains values of the probability of busy channel, the values of the probability of occurrence of the corresponding load values the relationship of the signal level of the carrier to the total noise and interference (N/a)characterizing the receiving device, or the values of the coefficients decrease the transmission power, or their combination.

45. The method according to item 43, wherein when the operation setting priorities calculate characteristics Kahn is La for available channels for each receiver using the updated first set of parameters.

46. The method according to item 45, wherein the characteristic of the channel depends on the total bandwidth.

47. The method according to item 46, wherein the aggregate bandwidth is determined on the basis of potentially feasible or actual data transmission speeds.

48. The method according to item 46, wherein the aggregate bandwidth is defined as the moving average value is potentially possible or actual data transmission speeds in a specific time interval.

49. The method according to item 45, wherein the characteristics of the channel depend on the value of the probability of breaking the link.

50. The method according to item 45, wherein the characteristics of the channel depend on the expected achievable values of the ratio of the signal level of the carrier to the total noise and interference (N/a).

51. The method according to item 45, wherein by means of the characteristics of the channel display matrix interference constraints, which specify the expected levels of interference from sources of interference.

52. The method according to item 45, wherein when the operation setting priorities additionally carry out the prioritization data partly based on the calculated characteristics of the channels.

53. The method of paragraph 52, wherein when the operation setting priorities advanced by upward is the priority of the specific data, at least partially based on the duration of the delays observed in the data transfer.

54. The method of paragraph 52, wherein the distribution of the transmission data corresponding to the available channels carried out partly on the basis of priorities assigned to the transmission data, and calculated characteristics of the channels.

55. The method according to item 54, wherein the distribution of the transmission data corresponding to the available channels carried out sequentially in decreasing order of priority, starting with the data having the highest priority.

56. The method according to item 54, wherein the distribution' of the transmission data corresponding to the available channels carried out sequentially in order of decreasing load they create, starting with the data, creating the most high load.

57. The method according to item 43, wherein the additional measured performance characteristics for one or more transmission data and control transmit power levels for one or more data transmissions based on the measured performance.

58. The method according to item 54, wherein the adjustment of the transmit power levels for one or more transmission data is carried out on the basis of the measured frequency is erased frames (EIC) for one or more p the programs data.

59. The method according to item 43, characterized in that it further calculates the estimated value of the required transmit power for a particular transmission data and control data transfer speeds for specific data at least partially based on the computed evaluation value of the required transmission power.

60. The method according to item 43, wherein the distribution is carried out in such a way as to ensure that the approximate equality of the speeds of the transmission data to transmission data.

61. The method according to p, characterized in that the equality of the speeds provided by the selection of two or more channels for data transmission, the transmission of which is carried out with a lower data rates.

62. The method of providing data transmission on multiple channels in the set of receiving devices in the communication system, namely, that carry out the calculation of the characteristics of the channel to multiple channels each receiving device to establish the priorities of transmission data distribute data to multiple channels based on the priority of transmission data and calculated characteristics of the channels, and when the operation of the distribution exercise the choice of data having the highest priority for the selected data to allocate the cash, with the worst characteristics of the channel, but which meet the requirements of, and implement a consistent allocation of available channels for the rest of the transmission data in the decreasing order of their priorities, transfer via dedicated channels in the set of receiving devices, and increasing the resources of one or more data transmission through existing channels with more suitable characteristics of the channel, in this exercise the choice of data having the highest priority from the list of available channels shall select the channel that has the best characteristics of the channel, and re-allocating the selected channel to the selected data transmission if the channel characteristic corresponding to the selected channel is more appropriate than the characteristics of the channel, which corresponds to the original selected channel.

63. The method of providing data for multiple channels in the set of receiving devices in the communication system, namely, that ask many factors decrease the transmission power for a variety of channels, and by factors decrease the transmission power indicate reduced power level relative to the maximum power level for the corresponding channel, carry out the distribution of data across multiple channels, determine the required transmit power levels for data transmission, perform the regulation of many factors decrease the transmission power in accordance with the required transmit power levels resulting from the operation definition, and transfer of data transmissions on multiple channels in accordance with the adjusted many factors decrease the transmission power and carry out the calculation of the characteristics of the channels for transmission of data at least partially based on many factors decrease the transmission power and the operation of the distributing transmission data from multiple channels perform, in part, based on the calculated characteristics of the channels.



 

Same patents:

FIELD: communications.

SUBSTANCE: in accordance to method, base station transfers into access terminal along direct traffic channel only when base station has data for sending to access terminal. Each access terminal generates periodic changes of data transfer speed on basis of received signal of direct communication line. Then, each access terminal minimizes period, within which it transfers along check communication line, without controlling power by disabling transmitter on basis of changes of speed of data transfer.

EFFECT: better traffic capacity.

6 cl, 10 dwg

Transceiver // 2264032

FIELD: radio engineering.

SUBSTANCE: device has transmitter radio signal exciter 1, power amplifier 2, low frequencies filter 3, in track of which first high-speed commutator is used on p-i-n diodes 12; control device 17, output of which is connected to control inputs of high-speed commutators on p-i-n diodes. Low-frequencies filter is made in form of serially connected resonance contours, and during operation of receiver control device provides for disabling of exciter and locking of power amplifier, and first high-speed commutator on p-i-n diodes connects one end of inductiveness coil to body, second end of which is low-frequency filter output.

EFFECT: higher speed of operation, higher efficiency.

1 dwg

FIELD: computer science.

SUBSTANCE: system has keyboards, output connecting device, central processor unit, modems, wireless communication device, identification block, processing center. Wireless communication device and each modem have a set-point generator, phase manipulator, scrambler, first mixer, first heterodyne, amplifier of first intermediate frequency, first power amplifier, duplexer, transceiver antenna, second power amplifier, second mixer, second heterodyne, amplifier of second intermediate frequency, multiplier, band filter, phase detector and descrambler.

EFFECT: higher reliability.

5 dwg

FIELD: communication systems.

SUBSTANCE: in communication system with alternating speed portions of frame are blocked in predetermined and predictable way, then power control commands identification is performed in closed cycle, of frames, erroneously generated on basis of blocked portions. Identified power control commands are ignored. If identification of erroneous power control command occurs after reaction of transmitting station to these commands, then transmitting station restores transfer energy in accordance to state, under which it was, if erroneous commands of power control were identified prior to reaction to them.

EFFECT: higher efficiency.

7 cl, 17 dwg

FIELD: radio communication systems.

SUBSTANCE: the system has one or several switching points and or several terminals keeping radio communication with the switching points, the graph in radio communication between the switching point and the terminal is transmitted in frame, the switching point is made for appointment of the transmission power over the descending communication line at least in two time intervals for the given terminal from the time intervals determined with the aid of the mentioned frame. The radio communication system switching point is made for generation of transmission power to the terminal at definite time intervals so that the ratio of radio signals transmission power to the terminal in each time interval and interference power caused by transmissions to other terminals would exceed the threshold value, predetermined on the power ratios in the time interval.

EFFECT: enhanced quality of transmission.

27 cl, 5 dwg

FIELD: radio engineering; digital audio-casting receivers.

SUBSTANCE: proposed method for reducing noise in frequency-modulated in-band digital channel audio-casting system includes reception of composite signal incorporating useful signal and noise signal; demodulation of composite signal to obtain first demodulated signal; calculation of first binary relaxed solution basing on first demodulated signal; processing of composite signal to obtain processed signal where frequency-modulated signal of first adjacent channel is suppressed; demodulation of processed signal to obtain second demodulated signal; calculation of second binary relaxed solution basing on second demodulated signal; and combining of first and second relaxed solutions to obtain output signal. Receivers implementing proposed method are also given in description of invention.

EFFECT: enhanced effectiveness of suppressing noise from frequency-modulated signals with respect to digital part of audio-cast signal.

29 cl, 7 dwg

FIELD: mobile communication systems.

SUBSTANCE: absolute-value character being transmitted presents forward-channel signal power at least in one time slot corresponding to chosen time slot, and relative-value character presents variation between forward-channel signal power in slot corresponding to one of mentioned remaining time slots and signal power of forward channel in preceding time slot.

EFFECT: enhanced quality and throughput capacity of forward channel.

60 cl, 17 dwg, 7 tbl

FIELD: signal transmission.

SUBSTANCE: the essence of proposed method of the frequency band division of a transmitted signal consists in the following: 1) the sum of one-band oscillation and its envelope are multiplied indirectly with unequally polar rectangular pulses; 2) the multiplication signal is coherently detected. In this case the frequency band decreases by two times. The device has a transmitted signal source, one-band oscillation shaper, envelope separator, adder of one-band oscillation and its envelope, 90° phase shifter, amplifier-amplitude limiter, differentiating circuit, trigger, member for exclusion of the constant component, signal multiplier, coherent detector and frequency divider by two times.

EFFECT: quality increase and decrease of the frequency band of a transmitted signal without loss of information.

2 cl, 2 dwg

FIELD: radio communications.

SUBSTANCE: device has broadband amplifier of intermediate frequency, narrowband interferences suppressor, adder, synchronized filter, intermediate frequency amplifier, narrowband interferences suppression elements, multiplier, integrator, support signal generator, spectrum analyzer 10, decimation index 11, clock pulse generator 12, first 13 and second 14 decimators.

EFFECT: higher trustworthiness, higher resistance to interference.

7 dwg

FIELD: communications.

SUBSTANCE: moving station receives signal of pilot channel of base station concurrently on several bearing frequencies, moving station uses new determinations of level of pilot channel signal in set of rules, sent by base station, and after checking this rules set, meant for forming of pilot-channel signal, by manipulation and processing, of received first determination of level of pilot channel signal, signal of pilot channel is formed for transfer from moving station.

EFFECT: higher efficiency, broader functional capabilities.

16 cl, 3 dwg

FIELD: radio engineering; construction of radio communication, radio navigation, and control systems using broadband signals.

SUBSTANCE: proposed device depends for its operation on comparison of read-out signal with two thresholds, probability of exceeding these thresholds being enhanced during search interval with the result that search is continued. This broadband signal search device has linear part 1, matched filter 2, clock generator 19, channel selection control unit 13, inverter 12, fourth adder 15, two detectors 8, 17, two threshold comparison units 9, 18, NOT gates 16, as well as AND gate 14. Matched filter has pre-filter 3, delay line 4, n attenuators, n phase shifters, and three adders 7, 10, 11.

EFFECT: enhanced noise immunity under structural noise impact.

1 cl, 3 dwg

FIELD: radio engineering for radio communications and radar systems.

SUBSTANCE: proposed automatically tunable band filter has series-connected limiting amplifier 1, tunable band filter 2 in the form of first series-tuned circuit with capacitor whose value varies depending on voltage applied to control input, first buffer amplifier 3, parametric correcting unit 4 in the form of second series-tuned circuit incorporating variable capacitor, second buffer amplifier 5, first differential unit 6, first amplitude detector 7, first integrating device 9, and subtraction unit 9. Inverting input of subtraction unit 9 is connected to reference-voltage generator 10 and output, to control input of variable capacitors 2 and 4. Automatically tunable band filter also has series-connected second amplitude detector 11, second integrating unit 12, and threshold unit 13. Synchronous operation of this filter during reception and processing of finite-length radio pulses is ensured by synchronizer 14 whose output is connected to units 10, 8, and 12. This automatically tunable band filter also has second differential unit whose input is connected to output of buffer amplifier 3 and output, to second control input of variable capacitor of band filter 2.

EFFECT: enhanced noise immunity due to maintaining device characteristics within wide frequency range.

1 cl, 1 dwg

FIELD: radio communications engineering; mobile ground- and satellite-based communication systems.

SUBSTANCE: proposed modulator that incorporates provision for operation in single-channel mode with selected frequency modulation index m = 0.5 or m = 1.5, or in dual-channel mode at minimal frequency shift and without open-phase fault has phase-shifting voltage analyzer 1, continuous periodic signal train and clock train shaping unit 2, control voltage shaping unit 3 for switch unit 3, switch unit 3, switch unit 4, two amplitude-phase modulators 5, 6, phase shifter 7, carrier oscillator 8, and adder 9.

EFFECT: enlarged functional capabilities.

1 cl, 15 dwg

FIELD: electronic engineering.

SUBSTANCE: device has data processing circuit, transmitter, commutation unit, endec, receiver, computation unit, and control unit.

EFFECT: high reliability in transmitting data via radio channel.

4 dwg

FIELD: electronic engineering.

SUBSTANCE: method involves building unipolar pulses on each current modulating continuous information signal reading of or on each pulse or some continuous pulse sequence of modulating continuous information code group. The number of pulses, their duration, amplitude and time relations are selected from permissible approximation error of given spectral value and formed sequence parameters are modulated.

EFFECT: reduced inetrsymbol interference; high data transmission speed.

16 cl, 8 dwg

FIELD: communication system transceivers.

SUBSTANCE: transceiver 80 has digital circuit 86 for converting modulating signals into intermediate-frequency ones. Signal source 114 transmits first periodic reference signal 112 at first frequency. Direct digital synthesizer 84 receives second periodic signal 102 at second frequency from first periodic reference signal. Converter circuit affording frequency increase in digital form functions to convert and raise frequency of modulating signals into intermediate-frequency digital signals using second periodic signal 102. Digital-to-analog converter 82 converts intermediate-frequency digital signals into intermediate-frequency analog signals using first periodic reference signal 112.

EFFECT: reduced power requirement at low noise characteristics.

45 cl, 3 dwg

FIELD: radio engineering; portable composite phase-keyed signal receivers.

SUBSTANCE: proposed receiver has multiplier 4, band filter 6, demodulator 8, weighting coefficient unit 5, adding unit 7, analyzing and control unit 10, synchronizing unit 3, n pseudorandom sequence generators 21 through 2n, decoder 1, and switch unit 9. Receiver also has narrow-band noise suppression unit made in the form of transversal filter. Novelty is that this unit is transferred to correlator reference signal channel, reference signal being stationary periodic signal acting in absence of noise and having unmodulated harmonic components that can be rejected by filters of simpler design than those used for rejecting frequency band of input signal and noise mixture. Group of synchronized pseudorandom sequence generators used instead of delay line does not need in-service tuning.

EFFECT: facilitated realization of narrow-band noise suppression unit; simplified design of rejection filters.

1 cl, 8 dwg

FIELD: mobile radio communication systems.

SUBSTANCE: proposed method and device are intended to control transmission power levels for plurality of various data streams transferred from at least one base station to mobile one in mobile radio communication system. First and second data streams are transmitted from base station and received by mobile station. Power-control instruction stream is generated in mobile station in compliance with first or second data stream received. Power control signal is shaped in mobile station from first power control instruction stream and transferred to base station. Received power control instruction stream is produced from power control signal received by base station; power transmission levels of first and second data streams coming from base station are controlled in compliance with power control instruction stream received. In this way control is effected of transmission power levels of first data stream transferred from each base station out of first active set to mobile station and of transmission power levels of second data stream which is transferred from each base station out of second active set to mobile station.

EFFECT: enlarged functional capabilities.

80 cl, 21 dwg

FIELD: radio engineering.

SUBSTANCE: proposed method and device designed for fast synchronization of signal in wade-band code-division multiple access (WCDMA) system involve use of accumulations of variable-length samples, testing of decoder estimates for reliability, and concurrent decoding of plurality of sync signals in PERCH channel. Receiver accumulates samples required for reliable estimation of time interval synchronization. As long as time interval synchronization estimates have not passed reliability tests, samples are accumulated for frame synchronization estimates. As long as frame synchronization estimates have not passed reliability tests, samples are analyzed to determine channel pilot signal shift.

EFFECT: reduced time for pulling into synchronism.

13 cl, 9 dwg

FIELD: satellite navigation systems and may be used at construction of imitators of signals of satellite navigational system GLONASS and pseudo-satellites.

SUBSTANCE: for this purpose two oscillators of a lettered frequency and of a fixed frequency are used. Mode includes successive fulfillment of the following operations - generation of a stabilized lettered frequency, its multiplication with an oscillator's fixed frequency and filtration of lateral multipliers with means of filters of L1 and L2 ranges and corresponding option of a fixed and a lettered frequencies.

EFFECT: reduces phase noise and ensures synthesizing of lettered frequencies of L1 and L2 ranges of satellite navigational system from one supporting generator at minimum number of analogous super high frequency units.

3 cl, 1 dwg

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