Method and apparatus for providing uplink signal-to-noise ratio (snr) estimation in wireless communication system |
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IPC classes for russian patent Method and apparatus for providing uplink signal-to-noise ratio (snr) estimation in wireless communication system (RU 2524167):
                  
 Network detection in wireless communication systems / 2523968
Invention relates to wireless communication. The wireless communication method includes: identifying scanning capability for a communication device, wherein the scanning capability is based on a network beacon signal transmission interval; preparing a network information message and entering passive scanning mode during the lifecycle of the scanning capability, if the communication device decides to use the scanning capability; and initiating transmission of the network information message if a beacon message corresponding to another network is received by the communication device in passive scanning mode.
 Apparatus and method for controlling sleep cycle synchronisation of sleep mode in wireless communication system / 2523955
Invention relates to synchronisation in sleep mode in a wireless communication system. A method of operating a mobile station in sleep mode state includes: if a traffic indication message and unicast data are not received during a listening window, transmitting one of a request message and a header to a base station to request a location of a next-scheduled listening window, and if a response for the one of the request message and the header is received, performing synchronisation for a next sleep cycle.
 Method and apparatus for obtaining security key in relay system / 2523954
Invention relates to communication engineering. The method of obtaining a security key in a relay system, wherein a node in a relay system obtains an initial key, in accordance with the initial key, the node obtains a root key of the security key of the radio interface between the node and another node adjoining said node, and in accordance with the root key, the node obtains a security key of the radio interface between the node and said other adjoining node. Therefore, in accordance with the initial key, each lower-level node obtains a root key of the security key of the radio interface between each lower-level node, such that UE data on an interface link Un can be secured accordingly.
 Handover method and apparatus in mobile communication system / 2523702
Method includes determining whether to handover user equipment (UE) using an X2 interface, transmitting a handover request message to a target base station (BS), the handover request message including closed subscriber group (CSG) information of the target BS, and receiving a handover request acknowledgement message from the target BS; determining whether to handover the UE using the X2 interface includes, if there is an X2 interface between the source BS and the target BS and if the target BS does not support a CSG or the target BS supports the same CSG supported by the source BS, determining that it is necessary to perform handover of the UE using the X2 interface, and obtaining the CSG information of the target BS through an X2 interface setup procedure.
 Methods and devices facilitating synchronisation of security configurations / 2523695
Terminal sends a security mode complete message to the network entity, on the receipt of which the network entity updates new security parameters. The access terminal initiates a mobility procedure while the security mode procedure is on-going, aborts the security mode procedure and reverts back to the old security parameters. The access terminal sends a mobility update message to the network entity including a dedicated status indicator configured to inform the network entity that the access terminal has reverted back to the old security parameters. In response to the mobility update message, the network entity reverts back to the old security parameters.
 Method and device in wireless network for determining uplink received power target value / 2523688
Method and device in a wireless network, comprising a first node and an adjacent second node, for determining an uplink received power target value of the second node to be used by user equipment which is to be served by the second node, wherein the downlink power capacity of the first node exceeds the downlink power capacity of the second node. The method comprises establishing the uplink received power target value of the first node, obtaining the downlink power capacity of the first node, obtaining the downlink power capacity of the second node, calculating the difference in downlink power capacity between the first node and the second node, and determining the uplink received power target value of the second node, based on the calculated difference in downlink power capacity between the nodes and the established uplink received power target value of the first node.
 Method and terminal for starting and stopping compressed mode / 2523665
Method of starting a compressed mode includes the following steps: a radio network controller (RNC) predetermines a threshold condition of starting a compressed mode and informs user equipment of the threshold condition; the threshold condition of starting the compressed mode is based on the transmission power of the user equipment; the user equipment detects whether itself meets the threshold condition of starting the compressed mode, and when the threshold condition of starting the compressed mode is met, Node B is informed; the user equipment and Node-B start the compressed mode.
 Method and apparatus for power control in wireless communication system / 2523440
Invention relates to wireless communication. A method and apparatus for power control in a wireless communication system are disclosed. The method includes assigning an uplink (UL) control channel to a MS from a base station, determining a location to receive a transmit power control (TPC) command based on the UL control channel, and receiving a TPC command in the determined location and increasing or decreasing transmit power, thereby enabling the reduction of overhead for power control command assignment information.
 Handover method and system in relay network, relay node, control base station and base station / 2523437
Invention relates to mobile communication. The method includes a relay node receiving a first area identifier which identifies the relay node; sending a system information broadcast message carrying the first area identifier to a terminal in a coverage area; receiving a handover request message forwarded by a control base station; and performing, according to the handover request message, a control operation of accessing the relay node on the terminal. The first area identifier which identifies the relay node is allocated to the relay node, so that the terminal in the relay network can be normally handed over from the base station to the relay node.
 Scheduled and autonomous transmission and acknowledgement / 2523359
Invention relates to communication engineering. A subset of mobile stations may be allocated a portion of a shared resource with one or more individual access grants, another subset may be allocated a portion of the shared resource with a single common grant, and yet another subset may be allowed to use a portion of the shared resource without any grant. An acknowledgement and continue command is used to extend all or a subset of the previous grants without the need for additional requests and grants, and their associated overhead.
 Method and device for diverting transmission in multiple access wireless communication system / 2343646
Description is given of a method and device for switching wireless terminal channels. For this, several communication channels with different physical characteristics are supported in the cell of the base station. Each wireless terminal controls several channels and evaluates several channels at the same time, such that, there can be fast switching between channels. Information on the quality of the channel is sent from each wireless terminal to the base station. The wireless terminal or base station selects the channel, based on the evaluated quality of the channel. By supporting several channels and through periodical changes in channels in different implementation alternatives, the time taken before the wireless terminal finds good or suitable channel conditions is minimised, even if the wireless terminal changes position. Several antennae are used at the base station for simultaneous support of several channels, for example, through control of the directional pattern of the antennae.
 Method of generating repeating audio signals for call return and device to this end / 2343647
During different set conditions providing source of sound for company service information as substitutive audio signal for call return, receiver can determine whether source of sound for service information for subscriber or set time interval is provided for. Present invention provides for a method and device for obtaining substitutive repeating audio signal for call return based on choice or successively in accordance with a preset condition.
 Access channel with limited reception time / 2343648
Method consists of the following stages: reception of request for channel access from user terminal. Reception of the user terminal can be one of several active user terminals. The transmission cycle duration is determined as a result of reception of a request for channel access. The arrival time of data to the cycle is determined for the user terminal. The arrival time of data to the user terminal is set, so as to designate the channel for the user terminal, starting from the time of arrival of data.
 System and method of band subchannel control with adaptive modulation and coding (amc) in communication system of multiple access with orthogonal-frequency division / 2344548
Method for assignment of band channel with adaptive modulation and coding (AMC) to subscriber stations (SS) is realised in wireless communication system, which separates full range of frequencies into multiple subcarrier bands, every of which represents set from previously specified quantity of subranges, every of which represents set of previously specified quantity of adjacent subcarriers. Method comprises the following stages: necessity in use of band channel with AMC is detected; quality of reception is measured in frequency bands; list of frequency bands with high quality of reception is formed; request is sent for assignment of band channel with AMC as well as foresaid list to base station (BS); response is received to mentioned request from BS; in compliance with response, changeover is done in SS in condition of use of band channel with AMC.
 Method and device of communication for transfer and reception of messages about services to service center or back / 2344568
Service center (SZ) for transmission of information content should not know or define number of person who initiates loading, and sole connection (TKV) of communication from communication device (TKG) to service center (SZ) does not require making another communication contact, at that information content is requested in the first communication session (SI1) with the first notice (SN1) about service from service center (SZ), and is delivered from service center (SZ) in the second communication session (SI2) with at least one notice (SN2) about service.
 System of home register of location for servicing of user of several types of networks / 2344569
System comprises subsystem of all-channel signaling processing, data base subsystem, services processing subsystem and operational maintenance subsystem, at that all subsystems are connected to communication network and accordingly realise information exchange; at that all-channel signaling processing subsystem performs function of OKC-7 processing; data base subsystem is used for storage of user data; services processing subsystem comprises one or more modules for processing of home location register services; operational maintenance subsystem comprises operational maintenance server, services acceptance terminal and close-range terminal of operational maintenance.
 Grouping of pilot-signals and control of sets in communication systems with multiple carriers / 2344570
In one version of realisation access network may assign group identifier (group ID) to every of pilot-signals associated with sector, for instance, on the basis of pilot-signals coverage areas, and transmit pilot-signals with appropriate group ID. PN shift may be used as group ID. Access terminal may group accepted pilot-signals in one or more pilot-signals group according to their group ID, and select representative pilot-signals from every group of pilot-signals for transmission of message about pilot-signal level. Access terminal may also use grouping of pilot-signals for efficient control of sets.
 Method and device for switching between common and individual channels for provisioning of broadcasting content services transmission in wireless telephone network / 2344571
Wireless communication network comprises different base stations and subscriber stations. Every base station provides services of broadcasting content transfer to subscriber stations via communication channels of one of the following types: 1) common channel used by multiple subscriber stations, 2) individual channels, every of which is separated for use by separate subscriber station. In response to one or several preset changes of condition, i.e. change of number of subscriber stations that request the program, change of transmission power level used by base station, or in case of other change of network condition, communication channel type used for provisioning of broadcasting content to one or several subscriber stations is switched over.
 Power control in external circuit for wireless communication systems / 2344572
One version of realisation comprises base station, which controls channel of speed indicator, decodes speed indicator channel with application of likelihood maximum decoder and determines availability of packet in speed indicator channel by comparison of probability to threshold, and analyses frame validity in packet-oriented channel on the basis of availability and content of packets accepted in speed indicator channel.
 Method and device for provisioning of multimedia service of broadcasting/multicasting in system of mobile communication / 2344573
Method and device are provided for provisioning of one or more communication services of point-point set type, such as multimedia service of broadcasting/multicasting (MBMS), to one or more mobile terminals, or subscriber devices (AA). When one or more mobile terminals are moved to new zone of mobile communication system controlled by other network component, after connection to service, information is transmitted between network elements by method.
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FIELD: radio engineering, communication. SUBSTANCE: invention relates to communication systems and can be used to estimate uplink signal-to-noise ratio (SNR) in a wireless communication system. The method of estimating SNR in a wireless communication system includes receiving a control signal over a first channel in a receiver. A transmission rate indicator signal is received over a second channel in the receiver, wherein the power level of the transmission rate indicator signal is greater than that of the control signal. In the processor, the SNR of the transmission rate indicator signal is determined based on a plurality of transmission rate indicator channel symbols that are accumulated in the receiver, and the SNR of the control signal is estimated based at least in part on the product of the SNR of the second channel and the inverse of the ratio of the second channel to the control signal for a specific data transmission rate over a data communication channel. EFFECT: high reliability of estimating SNR. 35 cl, 9 dwg
This application claims the priority of provisional patent application U.S. No. 60/452,790 dated March 6, 2003, entitled "Method and apparatus for data transmission on the reverse of the communication line in the communication system", confirm Dossier attorney No. 030223P1. The technical field to which the invention relates. The present invention relates in General to communication systems and, more specifically, to a method and device to provide an estimate of the signal-to-noise ratio (SNR) uplink communication in a wireless communications system. The level of technology Over the last few years have seen rapid growth in wireless technologies. This increase primarily was due to the wireless services that provide freedom of movement for communicating over the people, as opposed to being "tied" to the communication system with a fixed installation. He is also due to the increasing quality and speed of transmission of voice messages and data in a wireless environment, along with other factors. As a result of these improvements in communications, wireless communications has had and continues to have, a significant impact on the growing number of people sharing information. One type of wireless communication system includes a system for broadband multiple access code division (W-the OKR), which is configured to support the exchange of voice and data. This system can have multiple base transceiver nodes that communicate over wireless links with a variety of mobile terminals. Base transceiver node transmits data and the management information to the mobile terminal via the set of channels direct lines of communication, and the mobile terminal transmits data and information management base transceiver node in the set of reverse channels of the communication line. In particular, the channel of the reverse link, which is transferred from the mobile terminal to the base transceiver site, include the channel control signal, the data exchange channel and the channel display speed transmission, along with others. The data exchange channel data is transmitted from the mobile terminal to the base transceiver site. Channel display speed transmission offers transmission speeds of data for base transceiver node that indicates the speed at which data is transmitted on the channel of information exchange. The channel control signal can be used base transceiver node to a reference amplitude and phase, intended for demodulation of the data channel of information exchange. On the reverse channels is the turn communication capacity is usually adjusted to compensate for changes in the received signals, due to fluctuations in the environment information transmission between the mobile terminal and the base transceiver site. This process of power control is typically based on measurement of the signal-to-noise ratio (SNR) of the channel control signal. For example, base transceiver node periodically measures the SNR of the channel control signal received from the mobile terminal, and compares it with the target SNR. If the measured SNR is below the target SNR, the base transceiver node transmits to the mobile terminal the command "UP" (up). She instructs the mobile terminal to increase the power level of the channel control signal, as well as other channels. If the measured SNR higher than the target SNR, the base transceiver node sends to the mobile terminal the command "DOWN" (down). She instructs the mobile terminal to decrease the power level of the channels. The mobile terminal increases or decreases the transmitted power of the channels by a fixed step up or down. Typically, when the data rate on the channel information exchange increases, the signal quality of the channel information exchange also increases the mobile terminal to adjust to the increased speed of data transmission. For the effective functioning of the communication line, the power control signal is usually necessary at elicitate, to provide the best phase estimate for higher data transmission speeds. However, since the maximum signal power at which the mobile terminal can transmit on each channel of the reverse link, is limited to a finite amount of power, the power level of the channel signal of the control signal is set at the nominal power level signal to provide opportunities to increase the power level of the signal channel of information exchange, in order to adapt to the increased data transfer rates and minimize service channel signals of the control signal. While maintaining the power level of the channel signal of the control signal at the nominal power level signal, the estimation of the SNR of the channel control signal may not be as accurate as when transmitting at a higher power level signal. As a result, power control inner loop wireless communication system may adversely be affected due to reduced reliability of the measured SNR lower the power level of the signal transmitted on the control channel signal. The present invention is directed to overcoming or at least reducing the effects of one or more of the problems outlined above. Disclosure of inventions One AU is the object of the invention is provided a method in a wireless communications system. The method includes receiving the first signal on the first channel and the second signal on the second channel, where the second signal is received at a higher signal power than the first signal. Measured signal-to-noise ratio (SNR) of the second signal, and determines the SNR of the first signal based at least in part, on the measured SNR of the second signal. In another aspect of the invention provided with the device. The device includes at least one transmitter for transmitting the first signal on the first channel and the second signal on the second channel, where the second signal is transmitted at a higher power level signal than the first signal. The device also includes at least one receiver for receiving first and second signals. The receiver measures the signal-to-noise ratio (SNR) of the second signal and determines the SNR of the first signal based at least in part, on the measured SNR of the second signal. In another aspect of the invention provided with the device. The device includes a receiver for receiving the first signal on the first channel and the second signal on the second channel, where the second signal is received at a higher signal power than the first signal. The receiver device further comprises a processor for measuring a signal-to-noise ratio (SNR) of the second signal and determining the SNR of the first signal, the OS is Olivas, at least partly, on the measured SNR of the second signal. In another aspect of the invention is provided a mobile terminal. The mobile terminal includes a transmitter that transmits the first signal on the first channel and the second signal on the second channel to the base transceiver site, where the second signal is transmitted at a higher power level signal than the first signal. Base transceiver node accepts the first and second signals, measures the signal-to-noise ratio (SNR) of the second signal and determines the SNR of the first signal based at least in part, on the measured SNR of the second signal. In another aspect of the invention, is provided with a readable computer storage media embodying a method for wireless communication systems. The method includes receiving the first signal on the first channel and the second signal on the second channel, where the second signal is received at a higher signal power than the first signal. Measured signal-to-noise ratio (SNR) of the second signal and determines the SNR of the first signal based at least in part, on the measured SNR of the second signal. Brief description of drawings Fig. 1 is a block diagram of a wireless communication system in accordance with one illustrative embodiment of the present invention; Fig. 2 shows a more detailed pre the provision of the mobile terminal, which establishes communication in the wireless communication system of Fig. 1; Fig. 3 depicts a more detailed view of base transceiver node in a wireless communications system of Fig. 1; Fig. 4 is a chart illustrating the forward and reverse channels of the communication line used between the mobile terminal and the base transceiver site; Fig. 5A and 5B show the transmission channel display speed transmission method code seal (PMC) and a temporary seal (OPS), respectively; Fig. 6 illustrates a graph that conveys the relative power levels of the signal on which the mobile terminal transmits to the base transceiver site for data exchange channel, the channel indication of the transmission rate and the channel control signal; Fig. 7 shows a lookup table, which is stored in the base transceiver site and which provides the relationship between the data rate channel of information exchange and flow of information exchange to the test signal with respect to the CISP to the control signal of the corresponding channel return line; and Fig. 8 is a block diagram of the program, illustrating the method of providing estimates the SNR of the control signal and the SNR of symbols in accordance with one embodiment of the present invention. Assests is of inventions Referring now to the drawings and especially to Fig. 1, note that the wireless communication system 100 in accordance with one embodiment of the present invention. The wireless communication system 100 includes multiple mobile terminals (MT) 105 that communicate with multiple base transceiver sites (BPS) 110, geographically dispersed to provide a continuous zone of reliable reception of the transmission information of the mobile terminal 105 at their crossing system 100 for wireless communication. The mobile terminal 105 may, for example, take the form of radio telephones, personal information managers (PIM), personal digital assistants (OCA) or other types of computer terminals that are configured for wireless communication. Base transceiver sites 110 transmit data to the mobile terminal 105 in a straight line communication channel 115 wireless and mobile terminals 105 transmit data to the base transceiver sites 110 through a return line communication channel 115. In one embodiment, the wireless communication system 100 generally corresponds to the version of the specification W-mdcr (broadband multiple access code division). W-mdcr is a wireless standard of the 3rd generation (3G)based on the standard IS-95. Corresponding is illustrated with the embodiment, the wireless communication system 100 is designed to work using Version 6 of the 3GPP (partnership Project 3rd generation) standard W-mdcr, but other options for implementation may be implemented in other versions of the standard W-mdcr. In an alternative embodiment, the wireless communication system 100 may operate in accordance with the revision D 3GPP2 cdma2000. It should be clear that the described embodiments of should be considered more as an example than as limiting. Accordingly, the system 100 may take the form of various other types of wireless communication systems, without departing from the scope and essence of the present invention. Each base transceiver site 110 is connected to the controller 120 of base stations (KBS)that manages communication between the base transceiver sites 110 and other components of the communication system in a wireless communication system 100. Base transceiver sites 110 and the controller 120 base stations together to form a network of radio subscribers (CPCA) to transfer data to and from multiple mobile terminals 105 that communicate within the system 100 for wireless communication. Base transceiver sites 110 is connected to the controller 120 base stations lines 125 connection, which may take the form of a wire line E1 or Lin and T1 connection. However, alternate line 125 communication can be implemented using any of a number of wired or wireless media transmission, including but not necessarily limited to, microwave, fiber optic, etc. Additionally, a simplified description of a system 100 for wireless communication of Fig. 1 presents just to make it easier to Express the present invention. However, it should be clear that the wireless communication system 100 may be configured with any number of mobile terminals 105, base transceiver sites 110 and controller 120 base stations, without departing from the scope and essence of the present invention. The controller 120 base stations can be connected to various components of a communication system to effectively extend the communication capabilities available to the mobile terminal 105 outside of the system 100 for wireless communication. The components of the communication system may include a server 140, database, public switched telephone network (PSTN) 150, and the Internet 160 to access the mobile terminal 105. It should be clear that the components of the communication system illustrated in Fig. 1, are presented for example only, and that the wireless communication system 100 can be interfaced with various other types of components, communication systems, without departing from the scope and essence to the present invention. Consider now Fig. 2, which shows a more detailed view of the mobile terminal 105 in accordance with one embodiment of the present invention. In one of its simpler forms, the mobile terminal 105 includes a transmitter 205 for transmitting data through a return line communication channel 115 wireless base transceiver sites 110. The mobile terminal 105 also includes a receiver 210 for receiving data transmitted from the base transceiver sites 110 in a straight line communication channel 115 wireless. In an alternative embodiment, the transmitter 205 and receiver 210 may be combined into a single transceiver module as opposed to a variant implementation with two separate objects, as illustrated in the drawing. The transmitter 205 and receiver 210 is connected to the antenna 215 to facilitate wireless transmission and reception of data through the channel 115 of the wireless connection. The mobile terminal 105 further comprises a processor 220 to control various operating functions and memory 225 for storing data. In one embodiment, the processor 220 may take the form of a chip digital signal processor (DSP). However, it should be clear that the processor 220 may take the form of various other commercially available processors or control of lerow. The mobile terminal 105 also contains module 230 of the input data, which provides data for transmission to the base transceiver sites 110 through the channel 115 wireless. The module 230 input data may take the form of a microphone or input device from the device generating data, such as a computer terminal. It should be clear that the module 230 of the input data can be implemented in various other forms to provide data to the processor 220 and, thus, need not be limited to the above examples. Data received through the module 230 of the input data processed by the processor 220 and then forwarded to the transmitter 205 for transmission through a return line communication channel 115 wireless base transceiver sites 110. Data received by the receiver 210 in a straight line communication channel 115 wireless communications from the base transceiver sites 110 are routed to the processor 220 for processing and then to the module 235 output data for various purposes, such as playing for a user of the mobile terminal 105. Module 235 output may take the form of at least one device from the speaker, visual display device and output device to device data (e.g., a computer terminal), or any combination of them. D. what should be clear, the module 235 output data may contain various other visual device or an auditory perception, and thus, need not be limited to the above examples. In addition, a simplified view of the mobile terminal 105 in Fig. 2 shows just to make it easier to Express the present invention. Accordingly, should also be understood that the mobile terminal 105 may include other components to provide various other features and/or capabilities of the mobile terminal 105 that is different from the picture. Referring now to Fig. 3, note that it shows a more detailed view of the base transceiver site 110 according to one variant of implementation of the present invention. In one of its simpler forms, the base transceiver site 110 includes a transmitter 305 for data transmission in a direct line of communication channel 115 wireless mobile terminal 105 and the receiver 310 for receiving data from the mobile terminal 105 through a return line communication channel 115 wireless. In an alternative embodiment, the transmitter 305 and the receiver 310 may be combined into a single transceiver module as opposed to a variant implementation with two separate objects, as illustrated. The transmitter 305 and the receiver 310 p is soedinenii to the antenna 315, to facilitate transmission and reception of data through the channel 115 of the wireless connection. Base transceiver site 110 is additionally configured with processor 320 to control various operating functions and memory 325 for storing data. In one embodiment, the processor 320 may take the form of a digital signal processor (DSP). However, it should be clear that the processor 320 may take the form of various other commercially available processors or controllers. Base transceiver site 110 further comprises a communication interface 340 for coupling the base transceiver site 110 to the controller 120 of base stations. It should be clear that the base transceiver site 110 may be configured with additional components to perform several other functions that differ from the illustrated. Channel 115 wireless communication includes a variety of channels for communication between the base transceiver site 110 and the mobile terminal 105. Let us consider Fig. 4, which shows a diagram illustrating the multiple channels between the base transceiver site 110 and the mobile terminal 105. Base transceiver site 110 transmits data to the mobile terminal 105 via the set of channels 410 a straight line. These channels 410 a straight line usually on the require data channels, on which data is transmitted, and the control channels, which are transmitted to the control signals. The mobile terminal 105 transmits the data to the base transceiver site 110 via the set of channels 420 return line connection, which also include data channels and control channels. In particular, the mobile terminal 105 transmits the information to the base transceiver site 110 over a dedicated physical channel 422 control SFCU) (for example, the channel control signal), dedicated physical channel data 424 (SVCD) (for example, the data exchange channel) and channel 426 indicating the transmission speed (CISP). Information transmitted through these channels 420 return line connection from the mobile terminal 105 to the base transceiver site 110, represented by bits. A few bits are grouped together in a frame and is encoded in the modulation symbols. Then the modulation symbols are transmitted on the respective channels 420 return line connection to the base transceiver site 110. For example, the bits indicating the transmission speed is encoded in the modulation symbols indicate the speed of transmission and then transmitted over the channel 426 indicating the transmission speed Of the CISP. Similarly, data bits flow exchange of information encoded in the modulation of the data symbols and transmitted over the channel 424 the information the stock exchange ON-SVCD. Channel 424 of information exchange ABOUT-SVCD carries a signal containing data frames from the mobile terminal 105 to the base transceiver site 110. The data rate at which these frames are transmitted, usually a variable. Generally, by increasing the speed of data transmission on the channel 424 of information exchange ABOUT-SFCD, the amount of power required for signal transmission of the data stream on the channel 424 of information exchange ABOUT-SVCD, also increases. Channel 426 indicating the transmission speed Of the CISP transfers the signal containing frames display speed transmission, which correspond to the frames of the data stream transmitted on the channel 424 of information exchange ABOUT-SVCD. Each of the frames indicating the transfer rate identifies the data rate of the corresponding frame of the data stream. Channel 426 indicating the transmission speed Of the CISP additionally carry the hybrid query automatically repeat (GSAP) (type ID subpackage, version, redundancy and so on), which allows the base transceiver site 110 to decode the channel 424 of information exchange ABOUT-SVCD. Bits GSAP enable base transceiver site 110 or combine programmable image received data symbols with the previous transmission channel 424 of information exchange ABOUT-SVCD to decterov the Oia, either independently decode the received symbols. Channel 426 indicating the transmission speed Of the CISP usually has a fixed, low data rate. Channel 422 control signal SFCU carries a control signal that provides a reference amplitude and phase, for example, for demodulation of the data channel 424 of information exchange ABOUT-SVCD. Accordingly, the channel 422 control signal SFCU can be used by the base transceiver site 110 as a reference for demodulation, the demodulation of signals received from mobile terminal 105. In accordance with illustrated the embodiment, the control signal has a fixed, low data rate, to enable the mobile terminal 105 to transmit on the channel 424 of information exchange ABOUT-SVCD with a higher signal strength in order to adapt to higher data rates, where there is a transfer. In one embodiment, the channel 426 indicating the transmission speed Of the CISP transmitting method code seal (PMC), as illustrated in Fig. 5A, in which the channel 426 indicating the transmission speed Of the CISP is transmitted on a separate code channel from the channel 424 of information exchange ABOUT-SVCD. In an alternative embodiment, the channel 426 is indicatii transfer rate On-CISP can be transmitted by way of a temporary seal (OPS) with the channel 424 of information exchange ABOUT-SVCD on the same code channel on the basis of a temporary separation, as is illustrated in Fig. 5B. Typically, when the data rate on the channel 424 of information exchange ABOUT-SVCD increases, the signal strength of the channel 424 of information exchange ABOUT-SFCD the mobile terminal 105 also increases in order to adapt to the increased speed of data transmission. For the effective functioning of the communication line, the power control signal usually increases in order to provide the best phase estimate for higher data transmission speeds. Because the maximum total signal power at which the mobile terminal 105 may transmit on each channel 420 return line connection, limited by the finite amount of power, the power level of the channel signal 422 control signal SFCU is set at the nominal power level signal to provide the possibility of increasing the power level of the channel signal 424 information exchange ABOUT-SVCD for adapting to increased data transfer speeds and minimizing service signals of the control channel signal of SFCU 422. However, while maintaining the power level of the channel signal 422 control signal SFCU at a nominal power level of the signal, the estimate signal-to-noise ratio (SNR) of the channel 422 control signal SFCU may not be as accurate as possible with reduce at a higher power level signal. By measuring the SNR of the channel 426 indicating the transmission speed Of the CISP, according to which the transfer is made at a higher signal power than the channel 422 control signal SFCU, you can determine a more accurate estimate of the channel control signal SNR. The result is more accurate SNR of the channel 422 control signal SFCU, the wireless communication system 100 may achieve more efficient power control inner loop and scale symbols for decoding at high speed. Referring now to Fig. 6, note that it shows a graph illustrating the relative power levels of the signal for a particular data transfer rate at which the mobile terminal 105 transmits to the base transceiver site 110 over the channel 424 of information exchange ABOUT-SVCD, channel 426 indicating the transmission speed Of the CISP and the channel 422 control signal SFCU. In accordance with illustrated the embodiment, the power level of the channel signal 422 control signal SFCU is maintained at the nominal level, to allow the transmission channel 424 of information exchange ABOUT-SVCD at a higher power level signal, for adjusting oneself to a higher data transfer rate. In the illustrated embodiment, the flow of information the local currency to the control signal (PIO/CS) (i.e., the ratio of the energy on the code element of the data signal on the channel 424 of information exchange ABOUT-SVCD to the control signal on the channel 422 control signal SFCU) supported relatively high compared with the ratio of the CISP to the control signal (CISP/CC) (i.e. the ratio of the energy on the code element signal indicating the transmission rate on the channel 426 indicating the transmission speed Of the CISP to the control signal on the channel 422 control signal SFCU). By increasing the speed of data transmission on the channel 424 of information exchange ABOUT-SFCD, the difference between the relationship of the flow of information exchange to the control signal and the CISP to the control signal also increases. The correlation between the relationship of the flow of information exchange to the control signal and the CISP to the control signal, play a significant role in determining the SNR of the channel 422 control signal SFCU and channel 424 of information exchange ABOUT-SVCD. Consider now Fig. 7, which shows a table 700 of the search, providing the ratio between the speed of 710 data channel 424 of information exchange ABOUT-CFCD and the required ratio of 720 stream of information exchange to the test signal with respect 730 CISP to the control signal, according to one variant of implementation of the present invention. In accordance with one embodiment, the table 700 is stored in the memory 325 of the base transceiver site 110 and provides the required relationship 720 flow of information exchange to a control signal, and against the s 730 CISP to the control signal for each speed 710 data on which the mobile terminal 105 transmits data on channel 424 of information exchange ABOUT-SVCD at the base transceiver site 110. When the speed of 710 data channel 424 of information exchange ABOUT-SVCD increases, the difference between the attitude of 720 stream of information exchange to the test signal with respect 730 CISP to the control signal increases. It should be clear that provided in table 700 specific values relations 720, 730 of flow of information exchange to the control signal and the CISP to the control signal for specific speeds 710 data are merely exemplary. Accordingly, there is no need to restrict the values of the ratios 720, 730 of flow of information exchange to the control signal and the CISP to the control signal shown by the examples, they may include other values without departing from the scope and essence of the present invention. Attitude 730 CISP to the control signal in the table 700 for a specific speed 710 data is used by the base transceiver site 110 to more accurately assess the SNR of the channel 422 control signal SFCU and channel 424 of information exchange ABOUT-SVCD. In particular, in one embodiment, the estimated SNR of the channel 422 control signal SFCU is the product of a measured SNR of the channel 426 indicating sorostitute About the CISP and the reciprocal relationship 730 CISP to the control signal for specific speed 710 data channel 424 of information exchange ABOUT-SVCD. SNR symbols for channel 424 of information exchange ABOUT-SVCD is the product of a measured SNR of the channel 426 indicating the transmission speed Of the CISP, the reciprocal relationship 730 CISP to the control signal and the relationship 720 flow of information exchange to the control signal for specific speed 710 data channel 424 of information exchange ABOUT-SVCD. Estimated SNR of the control signal used by the base transceiver site 110 to more accurately perform power control inner loop, and the estimated SNR of the symbols used for metric scaling when decoding at high speed. Below is a more detailed description of how the base transceiver site 110 determines the SNR of the control signal and the SNR of characters. To determine the SNR of the channel 422 control signal SFCU measured SNR of the channel 426 indicating the transmission speed Of the CISP. According to the illustrated variant implementation, the symbols of the channel 424 of information exchange ABOUT-SVCD stored in memory 325 of the base site transmitter 110 when they are taken from the mobile terminal 105. The normalized symbol CISP (xkfrom channel 426 indicating the transmission speed Of the CISP, which is taken after filtering the control signal (for example, channel estimation and inverse cyclic shift) can b shall be represented by the following equation.
whereαk- the rate of fading Ec rich- energy for the code element CISP (RICH) Ecp- energy for the code element control signal SFfactor distribution CISP SFpfactor distribution control signal Iois the spectral density of the total received power ϕphase Ntis the spectral density of the total noise power and interference nkI,nkQ,ukIukQ- integrated noise components plus components of interference The SNR of the channel 426 indicating the transmission speed Of the CISP can be defined by either incoherent or coherent accumulation of the characters CISP, or a combination of coherent and non-coherent accumulation. When non-coherent accumulation of the characters CISP, the energy of each symbol CISP summarized transmission CISP. An example of a non-coherent accumulation may be represented by the following equation, which provides an estimate of the energy of the characters CISP (Es,rich/Io).
Estimation of the spectral density (Nt/Io) sound power represented by the following equation:
When coherent the om accumulation of symbols CISP, base transceiver site 110 first decodes the CISP. If the characters CISP duplicated during transmission, CISP can be decoded after each transmission. Once the decoding is successfully completed, the base transceiver site 110 knows the transmitted symbols CISP and can then coherently summed received symbols. An example of the coherent accumulation may be represented by the following equation, which provides an estimate of the energy of the characters CISP (Es,rich/Io).
where:
zk- estimated symbol CISP at time k Estimation of the spectral density (Nt/Io) sound power can be represented by the following equation.
Then for incoherent and coherent accumulations, SNR (Es,rich/Ntchannel 426 indicating the transmission speed Of the CISP can be obtained using the following equation.
As soon as SNR (Es,rich/Ntchannel 426 indicating the transmission speed Of the CISP obtained, it is possible to obtain SNR (Ec,pilot/Ntchannel 422 control signal SFCU from the equation below.
In particular, the SNR (Ec,pilot/N tchannel 422 control signal SFCU determined by taking the product of the measured SNR (Es,rich/Ntchannel 426 indicating the transmission speed Of the CISP (obtained above) and the reciprocal relationship 730 CISP to the control signal for a particular data transfer rate for channel 424 of information exchange ABOUT-SVCD from the table 700 stored in the memory 325 of the base transceiver site 110. As mentioned, the ratio of 730 CISP control signal is a ratio of energy per code element between the signal indicating the speed control signal (Ec rich/Ec,pilot). As soon as SNR (Ec,pilot/Ntchannel 422 control signal SFCU received SNR of the control signal can be used to more accurately perform power control inner loop of the base transceiver site 110 to communicate with the mobile terminal 105. The manner in which the base transceiver site 110 performs power control inner loop based on the measured SNR of the control signal, specialists in the art known. Accordingly, the details of the definition of such power control based on the SNR of the control signal, there will not be disclosed to avoid excessive shading of the present invention. SNR IC is s ( Es data/Ntfor metric scaling can be obtained using the following equation.
SNR characters (Es data/Nt) is determined by taking the product of the measured SNR (Es,rich/Ntchannel 426 indicating the transmission speed Of the CISP, the reciprocal relationship 730 CISP to the control signal and the relationship 720 flow of information exchange to the control signal for a particular data transfer rate for channel 424 of information exchange ABOUT-SVCD. As previously mentioned, the ratio of 730 CISP to the control signal and the ratio of 720 stream of information exchange to the control signal for specific speed 710 data channel 424 of information exchange ABOUT-SVCD get from the table 700 stored in the memory 325 of the base transceiver site 110. Then the estimated SNR characters (Es data/Nt) uses the base transceiver site 110 for metric scaling when decoding at high speed. The manner in which the base transceiver site 110 performs metric scaling based on the estimated symbol SNR, specialists in the art known. Accordingly, the details of the execution of such a metric scale on the basis of the SNR of the symbol C is, return it to appear will not to avoid excessive shading of the present invention. Refer now to Fig. 8, which illustrates a method of providing estimates the SNR of the control signal and the SNR of symbols in accordance with one embodiment of the present invention. In block 810, the receiver 310 of the base transceiver site 110 receives the control signal, the data signal and the signal indicating the transmission rate corresponding to the channel 422 control signal SFCU, channel 424 of information exchange ABOUT-SFCD and channel 426 indicating the transmission speed Of the CISP transmitted from the mobile terminal 105. According to one variant of implementation, the channel 426 indicating the transmission speed Of the CISP transfer method code seal (PMC), as illustrated in Fig. 5A, where the channel 426 indicating the transmission speed Of the CISP is transmitted on a separate code channel 424 from the channel information exchange ABOUT-SVCD. In an alternative embodiment, the channel 426 indicating the transmission speed Of the CISP transfer can be carried out by way of a temporary seal (OPS), by channel 424 of information exchange ABOUT-SVCD on the same code channel on the basis of a temporary separation, as illustrated in Fig. 5B. In block 820, the base transceiver site 110 stores the characters of the channel 424 of information exchange ABOUT-SVCD at their reception from the mobile is on terminal 105. In block 830, the processor 320 of the base transceiver site 110 estimates the SNR of the channel 426 indicating the transmission speed Of the CISP either incoherent or coherent accumulation, or a combination of coherent and non-coherent accumulation. In particular, when non-coherent accumulation of the characters CISP, the energy of each symbol CISP summed across the transmission of the CISP. For coherent accumulation of the characters CISP, base transceiver site 110 first decodes the CISP. If the characters CISP repeated throughout the transfer, re-keying can be decoded after each transmission. Once the decoding is successfully completed, the base transceiver site 110 knows the transmitted symbols CISP and can then coherently summed received symbols. Examples of incoherent and coherent accumulation, which provide an estimate of the energy symbols CISP (Es,rich/Io), were previously submitted. In one embodiment, can then be obtained SNR (Es,rich/Ntchannel 426 indicating the transmission speed Of the CISP, taking the product of the energy of the characters CISP (Es,rich/Io) and the reciprocal of the spectral power density of noise (Nt/Io), the equations which were previously submitted. In block 840, the processor 320 of the base transceiver uz is 110 and determines the SNR of the control signal ( Ec,pilot/Ntchannel 422 control signal SFCU, taking the product of the measured SNR of the channel 426 indicating the transmission speed Of the CISP and the reciprocal relationship 730 CISP to the control signal for specific speed 710 data channel 424 of information exchange ABOUT-SVCD from the table 700 stored in the memory 325 of the base transceiver site 110, as shown by the following equation.
As soon as the SNR of the channel 422 control signal SFCU received SNR of the control signal can be used by the base transceiver site 110 to perform power control inner loop for communication with the mobile terminal 105, using methods known in the technique. In block 850, the processor 320 of the base transceiver site 110 determines the SNR of the characters (Es data/Nt)channel 424 of information exchange ABOUT-SVCD, taking the product of the measured SNR of the channel 426 indicating the transmission speed Of the CISP, the reciprocal relationship 730 CISP to the control signal and the relationship 720 flow of information exchange to the control signal for a particular data transfer rate for channel 424 of information exchange ABOUT-SFCD, as shown by the equation below.
As previously mentioned, the ratio of 730 CISP to the control signal con is giving 720 flow of information exchange to the control signal for specific speed 710 data channel 424 of information exchange ABOUT-SVCD obtained from table 700, stored in the memory 325 of the base transceiver site 110. Then the estimated SNR characters can be used by the base transceiver site 110 for metric scaling decoding in Overdrive mode using methods well known in the art. Maintaining the power level of the channel signal 422 control signal SFCU at a nominal power level of the signal in order to adapt to the higher speeds of data transmission on the channel 424 of information exchange ABOUT-SFCD, it is possible to cause the evaluation of the SNR of the channel 422 control signal SFCU will not be as accurate as if the transfer was performed at a higher power level signal. Measuring the SNR of the channel 426 indicating the transmission speed Of the CISP, which is transmitted at a higher power level signal than the channel 422 of the control signal ON SFCU, you can determine a more accurate estimate of the channel control signal SNR, using the above methods. The result is more accurate SNR of the channel 422 control signal SFCU, the wireless communication system 100 may achieve more efficient power control inner loop and scale the symbol for decoding at high speed. Specialists in the art should understand that information and signals may be before the taulani using any of a number of different technologies and methods. For example, data, instructions, commands, information, signals, bits, symbols, and code elements that can be referred to in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof. Professionals should be clear that the various illustrative logical blocks, modules, circuits, and steps of the algorithms described in connection with the disclosures provided here options for implementation may be implemented as electronic hardware, software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps described above in terms of their functionality. Are there any features such as hardware or software depends upon the particular application and design constraints imposed on the entire system. Specialists in the art can implement the described functionality in different ways for each particular application, but such implementation decisions should not be interpreted as causing deviations from the scope of the present from which retene. The various illustrative logical blocks, modules, and circuits described in connection with open options for implementation may be implemented or performed with a General application processor, a digital signal processor (DSP), integrated circuit applied orientation (ISOE), user-programmable gate array (PWM) or other programmable logic device, discrete logic element or transistor logic, discrete hardware components, or any combination thereof designed to perform the described functions. The General-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, the combination of a DSP and a microprocessor, a variety of microprocessors, one or more microprocessors with a DSP core, or any other such configuration. The stages of a method or algorithm described in connection with open options for implementation may be embodied directly in hardware, in a software module executed by a processor, or combinations of both. A software module can reside in RAM (RAM : size is nausem device), flash memory, read-only memory (ROM), EPROM (erasable programmable ROM), EEPROM (electrically erasable EPROM), registers, hard disk, removable disk, CD-ROM (write once CD-ROM), or any other form of storage medium known in the art. The recording medium connected to the processor so that the processor can read from the recording medium information and to record information on it. Alternatively, the recording medium may be an integral part of the processor. The processor and the storage medium may reside in ISOE (integrated circuit applied orientation). ISOE can reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Specialists in the art will be apparent various modifications of the presented embodiments, and certain higher universal principles can be applied to other variants of implementation, without departing from the essence or scope of the invention. So about what atom, the present invention is not intended to limit presents options for implementation, but must comply with a broad scope in accordance with the disclosed principles and hallmarks. 1. Method for estimating signal-to-noise ratio (SNR) in a wireless communication system, comprising stages, which are: 2. The method according to claim 1, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver coherently. 3. The method according to claim 1, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver decoherence. 4. The method according to claim 1, wherein the set of symbols to the channel display speed transmission accumulate in the receiver through a combination of coherent and non-coherent accumulation. 5. The method according to claim 1, wherein the second channel corresponds to the channel display speed transmission (CISP), the ratio of the second channel to the control signal corresponds to the ratio of the CISP to the control signal. 6. Device for estimating the signal-to-noise ratio (SNR) in a wireless communication system, comprising: 7. The device according to claim 6, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver coherently. 8. The device according to claim 6, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver decoherence. 9. The device according to claim 6, in which notesto symbols of the transmission channel are accumulated in the receiver through a combination of coherent and non-coherent accumulation. 10. The device according to claim 6, further containing initiating one or more operations of the power control inner loop in response to determining that the estimated SNR of the control signal does not meet the target SNR. 11. The device according to claim 9, further containing a transmitter, in which at least one of the one or more operations of the power control inner loop includes transmitting the first command to the mobile terminal through the transmitter in response to determining that the estimated SNR of the control signal exceeds the target SNR. 12. The device according to claim 11, in which the first command instructs the mobile terminal to decrease the power level of at least the first channel. 13. The device according to claim 9, further containing a transmitter, in which at least one of the one or more operations of the power control inner loop includes transmitting the second command to the mobile terminal through the transmitter in response to determining that the estimated SNR of the control signal does not exceed the target SNR. 14. The device according to item 13, in which the second command instructs the mobile terminal to increase the power level of at least the first channel. 15. The device according to claim 6, in which the second channel corresponds to the channel display speed transmission (CISP), when this is compared to the second channel to the control signal corresponds to the ratio of the CISP to the control signal. 16. Computer-readable media containing instructions for estimating signal-to-noise ratio (SNR) in a wireless communication system, which when performed by a processor, instruct him: 17. Computer-readable storage medium according to item 16, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver coherently. 18. Computer-readable storage medium according to item 16, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver decoherence. 19. Computer-readable storage medium according to item 16, wherein a set of channel symbols indicating the transfer rate is accumulated in the receiver comb through the nation coherent and non-coherent accumulation. 20. Computer-readable storage medium according to clause 16, further containing instructions that, when performed by a processor, instruct him to initiate one or more operations of the power control inner loop in response to determining that the estimated SNR of the control signal does not meet the target SNR. 21. Computer-readable storage medium according to claim 20, in which at least one of the one or more operations of the power control inner loop includes transmitting the first command to the mobile terminal through the transmitter in response to determining that the estimated SNR of the control signal exceeds the target SNR. 22. Computer-readable storage medium according to item 21, in which the first command instructs the mobile terminal to reduce the power level at least, the channel control signal. 23. Computer-readable storage medium according to item 21, in which at least one of the one or more operations of the power control inner loop includes transmitting the second command to the mobile terminal through the transmitter in response to determining that the estimated SNR of the control signal does not exceed the target SNR. 24. Computer-readable storage medium according to item 23, in which the second command instructs the mobile terminal to increase ur the level of power, at least, the channel control signal. 25. Computer-readable storage medium according to clause 16, in which the second channel corresponds to the channel display speed transmission (CISP), the ratio of the second channel to the control signal corresponds to the ratio of the CISP to the control signal. 26. Device for estimating the signal-to-noise ratio (SNR) in a wireless communication system, comprising: 27. The device according to p, in which many of the characters in the channel display speed transmission accumulate in the receiver coherently. 28. The device according to p, in which many of the characters in the channel display speed before the Chi accumulate in the receiver decoherence. 29. The device according to p, in which many of the characters in the channel display speed transmission accumulate in the receiver through a combination of coherent and non-coherent accumulation. 30. The device according to p additionally contains means for initiating one or more operations of the power control inner loop in response to determining that the estimated SNR of the control signal does not meet the target SNR. 31. The device according to clause 29, further containing a means for transmitting one or more commands in mobile terminal, and at least one of the one or more operations of the power control inner loop includes transmitting the first command to the mobile terminal in response to determining that the estimated SNR of the control signal exceeds the target SNR. 32. The device according to p, in which the first command instructs the mobile terminal to decrease the power level of at least the first channel. 33. The device according to p additionally contains means for transmitting one or more commands in mobile terminal, and at least one of the one or more operations of the power control inner loop includes transmitting the second command to the mobile terminal in response to determining that the estimated SNR of the control signal does not exceed C left of school. 34. The device according to p, in which the second command instructs the mobile terminal to increase the power level of at least the first channel. 35. The device according to p, in which the second channel corresponds to the channel display speed transmission (CISP), the ratio of the second channel to the control signal corresponds to the ratio of the CISP to the control signal.
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