Methods and device to establish compliance of modulation symbols with resources in multiplexing systems with orthogonal frequency division multiplexing (ofdm)

FIELD: information technologies.

SUBSTANCE: multiple resource elements are divided into multiple resource areas, information to be transferred is modulated to generate a sequence of modulation symbols in a transmitter, compliance is established between the sequence of modulation symbols and the multiple elements of the resource in the multiple resource areas, and modulation symbols are sent to the receiver via multiple antennas using appropriate proper resource elements. The information to be transmitted may be coded to generate multiple code units, besides, for each unit from the set at least in one area of the resource approximately identical number of resource elements is identified. In the alternative version a subframe in the time area may contain only one area of the resource.

EFFECT: establishment of compliance between modulation symbols and resources.

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The technical FIELD TO WHICH the INVENTION RELATES.

The invention relates to a method of establishing correspondence modulation symbols resources in the communication system and, in particular, to a method for establishing compliance with modulation symbols for different areas of resources in the communication system and to a different way of matching the modulation symbols from the set of code blocks resources in the communication system.

DESCRIPTION of the prior art

Communication tools to perform data transfer at a distance to enable communication between transmitter and receiver. The data carrier are usually radio waves, and data transfer is performed with the use of limited resources transfer. Thus, the transmission of radio waves produced during the period of time using a limited frequency range.

In modern communication system information, transferable, first encode, and then modulate, through generation of a set of modulation symbols. Then these characters are put in line resources transfer. Typically, the resource transfer available data, segmented at a lot of time and frequency intervals of equal duration, referred to as elements of the resource. Data can be allocated to one resource element or may be a dedicated m is these resource items. When transmitting data, the data can be accompanied by a control signal, which is the carrier of information on the provision of resource elements for transmitting the current data. Therefore, when the receiver performs data reception control signal, the receiver can be obtained from the control signal information on the distribution of resources used for data transmission, and decodes the received data using the received information.

In communication systems of the third generation, based on the standard Long term evolution (3GPP LTE), developed in the framework of the Project on partnership in the field of communication systems of the third generation, for transmitting a control signal are certain elements of the resource. Therefore, the symbols corresponding to the data can be supplied in compliance with the resource items that are not allocated for transmission of the control signal. Each data transfer is the carrier of information bits of one or multiple transport blocks. When a transport block is larger than the maximum size of a code block, then the information bits in the transport block may be divided into multiple code blocks. The procedure of dividing the information bits in the transport block into multiple code blocks called code block segmentation. Due to the limitations the aqueous sizing of the code block and attempts to maximize the effectiveness of the packaging during the segmentation code block, many code blocks of a transport block may have different sizes. For each code block performs its encoding, interleaving, negotiate transmission speed and modulation. Therefore, the symbols corresponding to data to be transferred may be composed of modulation symbols from the set of code blocks.

SUMMARY of the INVENTION

Therefore, the object of the present invention is to provide an improved transfer method.

Another objective of the present invention is to provide an improved schema matching to match the modulation symbols resources.

According to one of the objects of the present invention may be a method of transmission in which the resource transfer in potcake divided into many elements of the resource is equal to the duration in the time and frequency domains share many elements of the resource to one or many areas of resource modulate the information to be transferred, to generate a sequence of modulation symbols in the transmitter, the sequence of modulation symbols set in accordance with the set of elements of the resource in many areas of resource and produce a transmission modulation symbols to the receiver through one eliminatesthe antennas using the respective associated elements of the resource. The mapping of the modulation symbols in at least one area of the resource, namely, in the first field of the resource does not depend on specific information of the control channel transmitted in the above-mentioned potcake in the time domain, and the mapping of the modulation symbols, at least one other field of the resource, namely, in the second field of the resource depends on these specific information on the control channel transmitted in the above-mentioned potcake.

Specific information on the control channel may be a pointer of the format of the control channel.

The method can include the following additional step: before operation establish compliance with the modulation symbols to resource elements perform interleaving sequence of modulation symbols.

The sequence of modulation symbols may be sequentially mapped to the resource elements in the character set of multiplexing in the areas of resource, since the multiplexing symbol having the smallest index in the time domain. One example of multiplexing symbol is an OFDM symbol in the system multiplexing orthogonal frequency division (OFDM).

Matching the sequence of modulation symbols may begin with the elements is s resource at least one first area of the resource. If the number of modulation symbols exceeds the number of resource elements, at least one first area of the resource, the remaining modulation symbols may be mapped to resource elements, at least one second region of the resource.

Characters multiplexing can be set in correspondence to each area of resource in ascending order, starting with the multiplexing symbol having the smallest index in the time domain in this area of the resource.

After a match the modulation symbols to resource elements in the characters of multiplexing may be performed by interleaving the modulation symbols in each symbol multiplexing in the frequency domain.

Alternatively, in the first area of resource multiplexing symbols can be mapped in descending order, and the second field of resource multiplexing symbols can be mapped in ascending order.

In yet another alternative embodiment, in the first area of resource multiplexing symbols can be mapped in ascending order, and the second field of resource multiplexing symbols can be mapped in descending order the deposits.

The method can include the following additional operations: calculate the number of available resource elements, at least one first area of the resource, receiving the first number, calculate the number of available resource elements, at least one second region of the resource, receiving the second number, the first number of modulation symbols set in accordance with the resource items, at least one first area of the resource, and the second number of modulation symbols set in accordance with the resource items, at least one second region of the resource.

The method can include the following additional operations: produce a signal on the control channel, which is a carrier of the aforementioned specific information on the control channel by the transmitter to the receiver, the receiver performs decoding of the signal on the control channel, receiving mentioned specific information on the control channel, determine which elements of the resource, at least one second region of the resource used to transmit the modulation symbols, collect modulation symbols transmitted in the resource selected at least one first area of the resource, through the generation of the first data packet, perform the decoding of the first data packet, determine whether de is kodirovanie the first data packet is successful, and if the decoding of the first data packet is not successful, then perform recursive collection modulation symbols transmitted in the above-mentioned region of the resource in other areas of the resource that you selected, at least one first area of the resource and at least one second region of the resource, and perform decoding collected modulation symbols up until collected modulation symbols will not be successfully decoded.

If the decoding signal of the control channel is not successful, the receiver can perform a recursive collection and decoding the modulation symbols transmitted in the above-mentioned region of the resource in other areas of the resource that you selected, at least one first area of the resource, up until collected modulation symbols will not be successfully decoded.

According to another object of the present invention, a transfer method may include the following operations: share a resource transfer in potcake on many elements of the resource is equal to the duration in the time and frequency domains, perform segmentation information, transferable, generated a lot of code blocks, each code block contains many information bits and at least one code block contains less information is itow, than at least one other code block, coding the code blocks by generating a set of encoded bits, perform the modulation of the set of coded bits in the code blocks by generating a sequence of modulation symbols in the transmitter, produce approximately the same number of resource elements for each of the multiple code blocks, and a slightly higher number of resource elements allocated for code blocks of a larger size and a slightly lower number of resource elements allocated for code blocks of a smaller size, and produce a transmission modulation symbols to the receiver through one or through multiple antennas with the use of appropriate and relevant elements of the resource.

According to another object of the present invention, a transfer method may include the following operations: share a resource transfer in potcake in a temporary area on many elements of the resource is equal to the duration in the time and frequency domains share many elements of the resource in many areas of resource that includes at least one first region of the resource and at least one second area of the resource, each of the first areas of resource and the second resource areas contains at least one character of multiplexers the tion, each character multiplexing corresponds to a time interval, and each character multiplexing contains many elements of the resource corresponding to the appropriate frequency subcarriers perform segmentation information, transferable, generated a lot of code blocks, each code block contains many information bits, coding the code blocks by generating a set of encoded bits, perform the modulation of the set of coded bits in the code blocks by generating a sequence of modulation symbols in the transmitter, set the line at least one modulation symbol in each code block elements of the resource, at least one first area of the resource, and this matching does not depend on specific information of the control channel transmitted in the above-mentioned potcake in the time domain, and produce the transfer of the modulation symbols at the receiver via multiple antennas with the use of appropriate and relevant elements of the resource.

The method can include the following additional step: at least one modulation symbol in each code block set in accordance with the resource items, at least one second region of the resource, and this is the formation of conformity depends on the specific information of the control channel, transferred in the above-mentioned potcake in the time domain.

The method can include the following additional step: for each of the multiple code blocks emit approximately the same number of resource elements in one of the at least one first area of the resource.

The method can include the following additional step: for each of the multiple code blocks emit approximately the same number of resource elements in one of the at least one second region of the resource.

The method can include the following additional step: for each of the multiple code blocks emit approximately equal to the number of coded bits in one of the at least one first area of the resource.

The method can include the following additional step: for each of the multiple code blocks emit approximately equal to the number of coded bits in one of the at least one second region of the resource.

The method can include the following additional step: for each of the multiple code blocks allocate the selected number of resource elements in one of the at least one first area of the resource to obtain approximately equal to the velocity encoding for multiple code blocks.

The method can include the following additional step: for each of the centre of the VA code blocks allocate the selected number of resource elements in one, at least one second region of the resource to obtain approximately equal to the velocity encoding for multiple code blocks.

The method can include the following additional step: for each of the multiple code blocks allocate a selected number of coded bits in one of the at least one first area of the resource to obtain approximately equal to the velocity encoding for multiple code blocks.

The method can include the following additional step: for each of the multiple code blocks allocate a selected number of coded bits in one of the at least one second region of the resource to obtain approximately equal to the velocity encoding for multiple code blocks.

According to another object of the present invention, can be created transmitter containing a modulator that performs modulation information, transferable, converting it into a variety of modulation symbols, the block matching, establishing that the set of modulation symbols of the multiple resource elements in potcake in the time domain, and this podcat in the time domain contains many areas of the resource, and the mapping of the modulation symbols in at least one area of the resource does not depend on specific details is the control channel, and many transmitters designed to transmit the modulation symbols using the corresponding elements of the resource.

BRIEF DESCRIPTION of DRAWINGS

Obviously, it is easy to gain a complete understanding of the present invention and many of its attendant advantages, as it is better understood by reference to the following detailed description when viewed in conjunction with the accompanying drawings, in which identical numbers of positions denoted by the same or similar components and which depict the following:

figure 1 illustrates the circuit of the transceiver based on the multiplexing orthogonal frequency division (OFDM), suitable for practical implementation of the principles of the present invention;

figure 2 illustrates the multiplexing subcarriers with orthogonal frequency division (OFDM);

figure 3 illustrates the OFDM symbols in the time domain;

figure 4 illustrates the circuit of the transceiver system multiple access frequency division on a single carrier;

figure 5 illustrates the circuit of the transceiver, providing a hybrid automatic request for retransmission (HARQ);

figure 6 illustrates the diagram of the transmission channel hybrid avtomaticheskogo the request for retransmission (HARQ);

7 illustrates a system with multiple inputs and multiple outputs (MIMO);

on Fig illustrates a MIMO system with advanced encoding;

figure 9 illustrates the elements of the downward control channel according to the standard LTE ("Long term evolution");

figure 10 illustrates the structure podagra descending channel according to the standard LTE ("Long term evolution");

figure 11 illustrates the scheme of establishment of conformity according to the first variant of implementation of the principles of the present invention;

on Fig illustrated scheme of alternation and schema matching according to the first variant of implementation of the principles of the present invention;

on Fig illustrates the sequence of operations of the method of matching the modulation symbols according to the first variant of implementation of the principles of the present invention;

on Fig illustrates the sequence of operations of the method of decoding the modulation symbols according to the second variant of implementation of the principles of the present invention;

on Fig illustrated diagram of the match according to the fourth variant of implementation of the principles of the present invention; and

on Fig illustrated scheme establish compliance with the according to the fifth variant of implementation of the principles of the present invention.

DETAILED description of the INVENTION

Figure 1 illustrates the circuit of the transceiver based on the multiplexing orthogonal frequency division (OFDM). In the communication system, which use the technology of multiplexing orthogonal frequency division (OFDM), in the circuit 110 of the transmitter modulator 112 modulates the control signals or data 111, transforming them into a sequence of modulation symbols, which are then convert sequential code into parallel Converter 113 serial code to parallel (S/P). To convert signals from the frequency domain into multiple OFDM symbols in the time domain using block 114 fast inverse Fourier transform (BOPF). In order to avoid the influence of fading of the signal due to multipath propagation or attenuation of this effect, the block 116 of the insertion of cyclic prefix adds to each OFDM-symbol cyclic prefix (CP) or zero prefix (NP). After that, the block 117 pre-processing in the transmitter (Tx) produces the transmission signal, for example, via the antenna (not shown), or alternatively, stationary wire or cable. In the circuit 120 of the receiver, assuming that achieved perfect synchronization in time and frequency, the signal passed by the block 11 pre-processing in the receiver (Rx), subjected to the processing unit 122 of the removal of cyclic prefix (CP). Block 124 fast Fourier transform (FFT) converts the received signal from the time domain into the frequency domain for further processing.

In the system, based on the multiplexing orthogonal frequency division (OFDM), each OFDM symbol consists of a set of subcarriers. Each of subcarriers in OFDM-symbol is the carrier of the modulation symbol. Figure 2 illustrates the diagram of the transmission in the OFDM system using subcarrier 1, subcarrier 2 and subcarrier 3. Since each OFDM symbol has a finite duration in the time domain, the subcarriers are superimposed on one another in the frequency domain. As shown in figure 2, the orthogonality is maintained at the sampling frequency, thus assume that the transmitter and receiver are perfectly synchronized in frequency. In the case of frequency shift due to imperfect synchronization in frequency or high mobility orthogonality of subcarriers on the frequency of sampling is destroyed, which leads to interference between the bearing (ICI).

Figure 3 illustrates the transmitted and received OFDM symbols in the time domain. Due to fading due to multipath propagation plot of the received signal, where the CPU is often destroyed the previous OFDM symbol. However, the since the CPU is too long the adopted OFDM symbol without the CPU must contain only a rollup of his own signal fading channel due to multipath propagation. On the receiver side usually perform a fast Fourier transform (FFT), which allows to perform further processing in the frequency domain. The advantage of OFDM over other transmission schemes lies in its resistance to fading due to multipath propagation. Fading due to multipath propagation in the time domain is converted into a frequency-selective fading in the frequency domain. In the presence of added cyclic prefix or zero prefix avoid intersymbol interference between adjacent OFDM symbols or significantly weaken the interference. In addition, since the transmission of each modulation symbol is produced in a narrow band of frequencies, that he is sinking due to the single-beam distribution. To combat frequency-selective fading can be used a simple correction pattern.

Multiple access frequency division on single-carrier (SC-FDMA), which uses a single-carrier modulation and correction in the frequency domain, is a technology, performance and complexity are similar to the performance and complexity of the OFDMA system. About the but advantage of the technology the SC-FDMA is the signal in the system of the SC-FDMA has a lower maximum power level to average power (PAPR) because of its inherent structure with one carrier. The low value of the ratio of the maximum transmitter power to average power (PAPR) usually leads to a high efficiency power amplifier, which is particularly important for mobile stations when transmitting on the uplink communication. System SC-FDMA is selected as the multiple access scheme in uplink communication standard LTE ("Long term evolution"), developed in the framework of the Project on partnership in the field of communication systems, third generation (3GPP). The example circuit of a transceiver for system SC-FDMA is shown in figure 4. On the transmitter side, the data or the control signal transform sequential code to parallel (S/P) Converter 141 sequential code in parallel. Before the data in the time domain will be set in accordance with a set of subcarriers unit 143 match subcarrier, the Converter 142 DFT applies discrete Fourier transform (DFT) to data or control signals in the time domain. To ensure a low ratio of maximum transmitter power to average power (PAPR), the output of the discrete Fourier transform (DFT) in h the frequency region usually put in a set of adjacent subcarriers. Then the Converter 144 BOPP applies the fast inverse Fourier transform (BOPP), usually larger than the discrete Fourier transform (DFT)to convert the signal back into the time domain. After conversion from parallel to serial (P/S)performed by the Converter 145 sequential code in parallel, the block 146 insertion of cyclic prefix adds to data or control signal cyclic prefix (CP) before transmitting data or control signal in block 147 pre-processing for transmission. The processed signal is added cyclic prefix is often referred to as unit SC-FDMA. After passing the signal through the channel 148 of communication, for example, through the channel fading due to multipath propagation in wireless communication system, the receiver performs pre-processing of the received signal block 151 pre-processing in the receiver removes the cyclic prefix (CP) in block 152 removal of cyclic prefix (CP), applies the fast Fourier transform (FFT) Converter 154 FFT and performs the correction in the frequency domain. After recovery 155 adjusted signal in the frequency domain apply the inverse discrete Fourier transform (ODPP) 156. The signal obtained at the output of the inverse discrete transformation the Fourier (ODPP), passed for further processing in the time domain, for example, demodulation and decoding.

In wireless packet data signals data transmitted over the data channels, that is, data transmission, usually accompanied by control signals transmitted over the control channels, that is, the transmission on the control channel. Information transmitted on the control channel, which includes a pointer to the format of the control channel (CCFI), the signal receiving acknowledgement (ACK)signal on the control channel transmission packet data channel (PDCCH), is a carrier of information about the transmission format for data transfer signal, for example, user ID, information about resource allocation, information about the size of the payload information, modulation information, hybrid automatic request for retransmission (HARQ), information associated with the information system with multiple inputs and multiple outputs (MIMO).

Hybrid automatic request for retransmission (HARQ) is widely used in communication systems to combat failures when decoding and to improve reliability. Each batch encode data using a schema-specific forward error correction (PIO). Each subpackage may contain only part of the coded bits If transferring for the subpackage of the number k is unsuccessful, as indicated by the message about not acknowledge received (NAK) feedback channel for receiving acknowledgement, then make the transfer subpackage retransmission, namely subpackage number k+1, in order to help the receiver decode the packet. Subpackages re-transmission may contain other coded bits than the previous subpackages. The receiver can be flexibly combined or jointly decode the received subpackets to increase the probability of decoding. The maximum number of passes is usually configured as taking into account reliability, and taking into account the delay of the packet, and taking into account the complexity of the implementation.

In wireless communication systems often use n-channel synchronous hybrid automatic request for retransmission (HARQ) due to its simplicity. For example, in communication systems, third generation (3GPP) as schemes of hybrid automatic request for retransmission (HARQ) for the upward communication channel according to the standard LTE ("Long term evolution") was adopted scheme of synchronous HARQ. Figure 5 shows an example of a four-channel synchronous hybrid automatic request for retransmission (HARQ). Due to the constant temporal correlation between successive transmission time intervals of transmission in the same HARQ channel have a structure with alternating. For example, time is of 0 consists of time intervals 0, 4, 8 ..., 4k, ...; 1 consists of alternating time intervals of 1, 5, 9, ..., 4k+1, ...; interleaved 2 consists of time slots 2, 6, 10, ..., 4k+2, ...; 3 consists of alternating time intervals of 3, 7, 11, ..., 4k+3 .... Let as an example, the alternation of 0. The subpackage passed in the time interval 0. After successful decoding of the packet, the receiver sends back to the transmitter a message acknowledgment (ACK). Then the transmitter may begin transmission of a new packet in the next time interval in the sequence, i.e. in the time interval 4. However, the first subpackage transmitted in a time interval of 4 is not well accepted. After the transmitter receives the message about not acknowledge received (NAK) from the receiver, the transmitter performs transmission of another subpackage of the same packet in the next time interval in the sequence, i.e. in the time interval 8. Sometimes the receiver may experience problems when detected package boundaries, then there is a subpackage of the first subpackage new package or a subpackage of retransmission. To alleviate this problem, the control channel may be transferred to a new pointer package, which is a carrier of information about the transmission format for the package. Sometimes it may be transferred to a more fleshed out version information about the channel hybrids the th automatic request for retransmission (HARQ), for example, the ID of the subpackage, or even a HARQ channel ID, to help the receiver to detect and decode the package.

Communication system with multiple antennas, which are often referred to as systems with multiple inputs and multiple outputs (MIMO), is widely used in the field of wireless technology to improve performance of the system. In the MIMO system, the transmitter has multiple antennas that can transmit independent signals, and a receiver equipped with multiple receiving antennas. If there is only one transmitting antenna or if there is only one data flow systems degenerate MIMO systems with single input and multiple outputs (SIMO). If there is only one receiving antenna system degenerate MIMO systems with multiple inputs and single output (MISO). If there is only one transmitting antenna and one receiving antenna of the MIMO system degenerate into a system with a single input and single output (SISO). The MIMO technology can significantly increase the throughput and range of the system without any increase in bandwidth or transmit power. Typically, MIMO technology increases the efficiency of the spectral range wireless communication systems through the use of additional degrees of freedom in the spatial domain due to the ice multiple antennas. There are many categories of MIMO technology. For example, schemes for spatial multiplexing to increase the transfer rate, allowing you to make thread-safe data transmission through multiple antennas. Ways to explode during transmission, such as, for example, space-time coding takes advantage of the spatial diversity due to the presence of multiple transmit antennas. Ways to explode when you receive use of spatial diversity due to the presence of multiple receiving antennas. Technology beam forming antennas to enhance the gain of a received signal and reduce interference to other subscribers. System multiple access with spatial separation (SDMA) allows streams of signals from multiple subscribers or multiple subscribers through the same frequency-time resources. Receivers can share many data streams on the spatial characteristics of these data streams. It should be noted that these technologies MIMO transmission are not mutually exclusive. In fact, in advanced wireless communication systems often use a variety of MIMO schemes.

When the communication channel is suitable, for example, when the speed of the mobile device is small, there is in the possibility of using the MIMO scheme with feedback to improve performance of the system. In the MIMO system with feedback receivers transmit feedback information about the channel state and/or preferred processing algorithms at the transmitter (Tx) MIMO system. The transmitter uses this information piped feedback, together with other considerations, such as, for example, the priority order of transmission, availability of data and resources for joint optimization of transmission schemes. Widespread scheme MIMO feedback is called pre-coding with multiple inputs and multiple outputs (MIMO). In the scheme with the prior encoding of the transmitted data streams are pre-multiplied by the matrix before transmitting them to many transmitting antennas. As shown in Fig.6, assume that there are Nt transmit antennas and Nr receiving antennas. The channel between the Nt transmitting antennas and Nr receiving antennas is designated as H. Therefore, the channel H is expressed as a matrix of dimension NtNr. If the transmitter has channel information H, the transmitter can choose the most suitable transmission scheme according to the channel information H. for Example, if the goal is to maximize throughput, then the matrix pre-coding can be chosen so that it represents privacyguard matrix H, if the transmitter has information about ka is ale H. This method can be diagonalization effective channel for transmission of multiple data streams at the receiver side, which leads to the elimination of interference between multiple data streams. However, this is often hampered by overhead on the transmission of information necessary to transmit the exact values of H on the feedback channel. To reduce the overhead on the transmission of information on the feedback channel set matrix pre-coding to discretize the space of possible values that can take on H. given this discretization, the receiver transmits the channel feedback information on the preferred scheme pre-coding, usually in the form of preferred index matrix pre-coding, rank and index the preferred vectors of the preliminary coding. The receiver can also send feedback channel corresponding values of the indicator of channel quality (CQI) for the preferred scheme pre-encoding.

Another perspective of systems with multiple inputs and multiple outputs (MIMO) is whether the multiple data streams to be transmitted, encoded separately or jointly encoded. If all levels for transmission zakodirana the s together, this system is called a MIMO system with a single code word (SCW). Otherwise, this system is called a MIMO system with multiple codeword (MCW). When the system with the downstream channel according to the LTE system is used for MIMO single user (SU-MIMO), in one subscriber terminal (UE) may be submitted up to 2 codewords. In that case, when the subscriber terminal (UE) sent 2 code words, the subscriber device must accept these two code words separately. Another technology called MIMO multiple access with spatial separation (SDMA), which is also sometimes referred to as multi-drop system MIMO (MU-MIMO). In technology, SDMA, multiple data streams encode separately and produce their transfer to different intended receivers through the same frequency-time resources. Through the use of different spatial characteristics, such as antennas, virtual antennas or vectors pre-coding, the receiver is able to distinguish between multiple data streams. In addition, due to the triage service good group of receivers and choice of the appropriate spatial characteristics for each data stream based on the information about the state of the channel, the signal of interest can be improved, at the same time, although the NGOs can be improved other signals to many receivers. Therefore, can be enhanced system throughput. Both systems: MIMO system for a single user (SU-MIMO) and multi-drop system MIMO (MU-MIMO) approved for use in downlink communication according to the LTE standard. System MU-MIMO is also approved for use in uplink communication according to the LTE standard, while the application of the system SU-MIMO for the upward communication channel according to the LTE standard is still under discussion.

In LTE, some resources, namely, the elements of the control channel is reserved for transmission of the downward control channel. On the basis of the elements of the control channel reserved for top-down control channels can be created the set of possible control channels. Each downward control channel can be transmitted over one of the sets of possible channels control channel. For an example of the control channel and the set of possible control channels shown in Fig.9. In this example, can be created 11 sets of possible control channels based on the 6 elements of the control channel. In the rest of this document, these sets of possible control channels are called the sets of resources on the control channel, or simply a set of resources.

Figure 10 shows the structure podagra downward communication channel to the system standard is LTE, developed in the framework of the Project on partnership in the field of communication systems, third generation (3GPP). In the communication system of the third generation 3GPP LTE time and frequency resources can be divided into many blocks 210 resource (RB). Each unit resources 210 can be further divided into many elements 211 of the resource in the time and frequency domains. As shown in figure 10, a single OFDM symbol may be transmitted using a number of resource elements corresponding to the same period of time. In a typical configuration, each podcat containing 14 OFDM symbol has a duration of 1 MS (millisecond). Assume that the OFDM symbols in potcake indexed from 0 to 13. Reference symbols (RS) for antenna 0 and antenna 1 are located in OFDM symbols with indices 0, 4, 7 and 11. Reference symbols (RS) for antennas 2 and 3, when present, are located in OFDM symbols with indices 2 and 8. The signals of the control channel includes a pointer to the format of the control channel (CCFI), the signal receiving acknowledgement (ACK)signal on the control channel transmission packet data (PDCCH)transmitted in the first one or first two or three OFDM symbols. The number of OFDM symbols used for the signals of the control channel is indicated by a pointer CCFI. The signals of the data transmission channel, i.e. the signals shared descending fizi is a mini-channel (PDSCH), passed in other OFDM symbols.

In this invention the authors have proposed methods and apparatus that provide reliable matching the control channel and data channel resources in OFDM systems.

The objects, characteristics and advantages of the present invention are apparent from the following detailed description, which is simply illustrated several specific embodiments and implementations of the invention, including the alleged best mode embodiment of the invention. The present invention may also be implemented in other and different variants of its implementation, and some of its details may be modified in various obvious respects, all of this is within the essence and scope of the invention. Accordingly, the drawings and description should be regarded as illustrative in nature, and not as limiting. In the accompanying drawings, the present invention is illustrated as an example and not as limitations. In the following illustration as an example, the authors used podcat descending channel communication system of the LTE standard, developed by the Project on partnership in the field of communication systems, third generation (3GPP). However, there is no doubt that the illustrated methods can b shall be applied to the structure podagra of the upward communication channel and in other systems, always, when there is a possibility of their application.

Figure 11 illustrates the scheme of matching the modulation symbols to the multiple resource elements in potcake downward communication channel of the LTE according to the first variant of implementation of the principles of the present invention. For illustrative purposes 14 OFDM symbols in potcake downward communication channel of the LTE indexed from 0 to 13. The signals on the control channel can take the first one or first two or three OFDM symbol, while the data channels can take an OFDM-symbols, not occupied channels of control. Podcat downward communication channel according to the LTE standard can be divided into region 1, consisting of the elements of the resource corresponding to the OFDM-symbol from the 3rd to 13th, and on region 2, consisting of the elements of the resource corresponding to the OFDM-symbols with indexes 0, 1 and 2. The following should be noted: here, for simplicity of illustration, the authors made the assumption that the control channels and data channels do not transmit in the same OFDM-symbol. However, all embodiments of this invention are applicable to the case in which the control channels and data channels are multiplexed in the same OFDM-symbol. In General, region 1 can be defined as the totality of those elementalists in podagra, used for transmission on the data channel regardless of the values of specific information on the control channel transmitted in the above-mentioned potcake, which is, for example, a pointer to the format of the control channel (CCFI). Area 2 can be defined as the set of those elements of a resource in potcake that can be used for transmission on the data channel in the case, if the mentioned elements of the resource is not used by other transmission channels of official signals that the specific information of the control channel transmitted in the above-mentioned potcake, which is, for example, a pointer to the format of the control channel (CCFI).

It should be noted that in potcake may be many transmission channel data, which are multiplexed in the frequency domain using technology multiple access orthogonal frequency division (OFDMA). Assume that for a single data transmission channel has N1resource items in region 1 and there are N2resource items in region 2. The presence of resource elements for data transmission in region 1, consisting of OFDM symbols from the 3rd to 13th, does not depend on any information on the control channel. However, the presence of resource elements for data transmission in region 2 may depend on some information Kahn is and management. In the first embodiment, podagra downward communication channel according to the LTE standard items resource for data transmission in OFDM symbols with indices 0, 1 and 2 in region 2 depends on the value of the pointer of the format of the control channel (CCFI). For example, if the pointer of the format of the control channel (CCFI) indicates that the OFDM symbols with indices 0 and 1 in region 2 is used for signal transmission on the control channel, the data available only to the resource elements in OFDM-symbol with index 2.

For simplicity of illustration modulation symbols, which must be mapped to resource elements, numbered from 0 to N-1, where N=N1+N2. On Fig illustrated scheme of alternation modulation symbols in the first stage and establish compliance perenesennyj modulation symbols to the multiple resource elements in the second stage according to the first variant of implementation of the principles of the present invention. For simplicity of illustration, the description of this invention may be regarded as the operation of the second stage on Fig, which illustrates the mapping of the modulation symbols of resources, assuming the existence of a natural order or numbering of modulation symbols. However, there is no doubt that to a person skilled in the art will easily apply the methods of this invention for those cases when the modulation symbols are not in natural order. As shown in Fig, by adding the first phase, you are ordering or interleaving the modulation symbols described in this invention, the methods can be applied for the case in which the modulation symbols are of a different order. It should also be noted that in some other cases, the methods described in this invention can be combined with other processing. For example, you could describe the mapping of the modulation symbols to resource elements together for the operations of the first stage and the second stage, shown in Fig, without going beyond the disclosure of the invention.

In the first embodiment of the invention in accordance with the principles of the present invention a method of establishing compliance with the set of modulation symbols to the set of elements of the resource involves the separation of the multiple resource elements in potcake on many areas of the resource. Matching, at least in one area of the resource mentioned in potcake does not depend on specific information of the control channel transmitted in the above-mentioned potcake, while the mapping of the modulation symbols to resource elements, at least one other area re the URSA in the above-mentioned potcake depends on the aforementioned information on the control channel, transferred in the above-mentioned potcake. Figure 11 shows an example of the first variant embodiment of the invention. As shown in figure 11, data allocated two blocks of resources (RBs). It should be noted that these two resource block (RBs) does not necessarily have to be contiguous in the frequency domain. Except for the resources used to transmit the specified office of the signals, for example, reference signals (RSs), the remaining resource elements (REs) can be used to transmit two channels: a control channel and data channel. In this example, assume that the signals of the control channel can be transmitted only in the first three OFDM symbols. And the size and distribution of resources for transmission of control channel indicated by the pointer of the format of the control channel (CCFI), the transmitted signals through the control channel. The resource elements (REs) in these two resource blocks (RBs) is divided into two areas. Region 1 consists of resource elements (REs)corresponding to the last eleven OFDM-symbols (OFDM-symbols from 3rd to 11th) in potcake. Area 2 consists of resource elements (REs)corresponding to the first three OFDM-symbols in potcake. It should be noted that the control channels and data multiplexed in region 2, and that the size and distribution of resources for the control channel in area 2 is specified by means of the CMV pointer of the format of the control channel (CCFI). In other words, the size and distribution of resources for transmission of a data channel in region 2 depend on the index format of the control channel (CCFI). As shown in figure 1, before entering the modulator, the encoded bits generated by information bits and the encoding algorithm of the channel, agree on the baud rate, perform their interleaving and modulation for each transmission. Can be made more channel-by-channel interleaving the modulation symbols. Modulation symbols set in accordance with the resource elements (REs)used for data transmission (i.e. the available resource elements for transmission on the data channel) 1 independent of the index format of the control channel (CCFI). For example, as shown in figure 11, the modulation symbols set in accordance to the available resource elements (REs)used for data transfer, progressive way. In particular, the modulation symbols 0-23 put in line 24 resource elements (REs)used for data transmission, in the fourth OFDM-symbol (that is, in the OFDM-symbol with index 3). Modulation symbols 24-39 put in line 16 resource elements (REs)used for data transmission in the fifth OFDM-symbol (that is, in the OFDM-symbol with index 4). Modulation symbols 208-231 put in under twenty is etirem (24) to resource elements (REs), designed for data transmission, in the fourteenth OFDM-symbol (that is, in the OFDM-symbol index 13). Assuming that the signals on the control channel (PDCCH) occupy the first 2 OFDM symbol (i.e. OFDM symbols with indices 1 and 2), the resource elements (REs) in the third OFDM-symbol can be used for transmission on the data channel. Thus, the modulation symbols 232-255 put in under twenty-four (24) to the available resource elements (REs)used for data transmission in the third OFDM-symbol (that is, in the OFDM-symbol index 2). It should be noted that, if desired, can be made more interleaving channels and other processing of these modulation symbols. In the preferred embodiment, this processing should be limited to region 2 to preserve the independence of the distribution of resources and compliance with modulation symbols in region 1 from index format of the control channel (CCFI). It should be noted that the aforementioned method of establishing correspondence is given simply as an illustration, can be applied to other methods of resource allocation and establish compliance with the modulation symbol without going beyond the scope of this invention. Establishing the conformity of modulation symbols 0-231 region 1 on 11 may be any determination of compliance, because it set the pressure of conformity does not depend on the index format of the control channel (CCFI). For example, the modulation symbols may be mapped to resource elements (REs) in region 1, starting from the last OFDM symbol. In this case, the modulation symbols 0-23 put in line the last OFDM-symbol (i.e. OFDM-symbol index 13); modulation symbols 24-47 put in the penultimate line OFDM-symbol (i.e. OFDM-symbol index 12); and the modulation symbols 208-231 assign a fourth OFDM-symbol (i.e. OFDM-symbol index 11).

On Fig illustrates the sequence of operations of the method of matching the modulation symbols according to the first variant of implementation of the principles of the present invention. First, perform an operation S310, in which data signals and control signals to be transferred, modulate and transform them into a variety of modulation symbols, including the symbols corresponding to the data and control characters. At operation 320 the available resource elements for sending in potcake divided into area 1 and area 2. At operation 330 modulation symbols set in accordance with area 1 and area 2. In particular, the mapping of the modulation symbols in region 1 does not depend on the information contained in the index format of the control channel (CCFI), transferred to the control signals, and establishing with twelve modulation symbols in region 2 depends on the information contained in the index format of the control channel (CCFI), transferred to the control signals. Finally, at operation 340 modulation symbols mapped to resource elements pass through multiple antennas.

On Fig illustrated operation establish compliance with the many areas of the resource is performed by the receiver according to the second variant of implementation in accordance with the principles of the present invention. For illustrative purposes used the example of figure 11. In operation S410, the receiver first decodes the information contained in the index format of the control channel (CCFI), signals transmitted by the control channel. On the basis of the detected pointer of the format of the control channel (CCFI), the receiver can determine what elements of the resource allocated for transmission on the data channel in region 2. In operation S420, the receiver collects the received modulation symbols according to the available resource elements (REs)used for data transmission in region 2 according to the corresponding modulation symbols to resource elements (REs)used for data transmission in region 2. Schema matching can be specified in advance before you started the transfer process. Alternatively, the transmitter can transmit the signal of the control channel contains information about the schema matching. In operation S430, the receiver also collects modulation symbols according to the available resource elements (REs)used for data transmission in region 1 to create the first data packet according to the scheme of matching the modulation symbols to resource elements (REs)used for data transmission in region 1. Then, in operation S440, the receiver attempts to decode the first data packet, consisting of modulation symbols, only region 1. In operation S450, the receiver checks whether the first data packet is successfully decoded, using a control function by cyclic redundancy code (CEC). If the first data packet is decoded successfully, i.e. if the result of checking through cyclic redundancy code (CEC) is positive, it can be performed the operation S460, when the receiver transmits the decoded packet to the upper layer for further processing. Otherwise, perform an operation S470, in which the receiver generates a second data packet comprising modulation symbols from both regions: region 1 and region 2, and attempts to decode the second data packet. In operation S480, the receiver transmits the decoded packet to the upper layer for further processing at operation S460. In alternate who ate embodiment, the receiver may first attempt to decode data packet with the modulation symbols from both regions: region 1 and region 2. If the decoding is successful, i.e. if the result of checking through the CEC is positive, then the receiver may transmit the decoded packet to the upper layer for further processing. Otherwise, the receiver attempts to decode the packet data modulation symbols only from region 1. Alternatively, the detected pointer of the format of the control channel (CCFI) can be applied discoveries with erasing or verification by the CEC. In the case where the receiver does not successfully detected, the pointer of the format of the control channel (CCFI), i.e. if there is a blurring of the pointer of the format of the control channel (CCFI) or failure to detect a pointer of the format of the control channel (CCFI), to decode the packet, the receiver uses the modulation symbols only from region 1. Otherwise, the receiver uses to decode the packet modulation symbols from both regions: region 1 and region 2.

In the third embodiment according to the principles of the present invention the modulation symbols 0, 1, ..., N1-1 set in accordance region 1, and the modulation symbols N1N1+1, ..., N-1 is put in the line of field 2. Again using Pig as an example, for this data there are a total of 256 modulation the characters. The first 232 modulation symbol set according to the resource elements (REs) in region 1, and the other 24 modulation symbol set according to the resource elements (REs) in region 2. It should be noted that the number of modulation symbols that can be transmitted is equal to the number of available resource elements (REs) for data transmission. In the approach using two fields, the first N1modulation symbols set in accordance N1the resource elements (REs) 1 regardless of the value of the pointer of the format of the control channel (CCFI). However, the number of available resource elements (REs)used for data transmission, and the number of transmitted modulation symbols in region 2 depends on the value of the pointer of the format of the control channel (CCFI).

In the fourth embodiment according to the principles of the present invention a method of matching the modulation symbols to resource elements in potcake assumes the existence of the operations division of resource items in potcake in many areas of resource operation establish compliance with modulation symbols, at least in one area of the resource in potcake using OFDM symbols in ascending order, while the compliance of modulation symbols to resource elements, at least one other of the regions of the resource mentioned in potcake set using OFDM symbols in descending order. For example, in potcake downward communication channel according to the standard of "Long term evolution" (LTE) the mapping of the modulation symbols in region 1 start of resource elements (REs) in OFDM-symbol 3, and the filling of the OFDM symbols is performed in ascending order, while the mapping of the modulation symbols in the field 2 start with resource elements (REs) in OFDM-symbol 2, and the filling of the OFDM symbols is performed in descending order. In other words, the procedure of filling the OFDM symbol modulation symbols is the following: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 2, 1, 0. It should be noted that the presence of resource elements (REs) in region 2 (OFDM symbols 0, 1, 2) depends on the index of the format of the control channel (CCFI). This method of matching is especially useful when there are many code blocks in the transmitted data. Through matching code blocks OFDM-symbols, which are ordered sequentially in the time domain, the receiver can start decoding any of the code block before it will accept all podagra. The fourth variant embodiment of the invention also illustrated in Fig. And again the order establishing the conformity of modulation symbols to resource elements (REs) in the frequency domain can be modified without going beyond the ideas of this is subramania. For example, on Fig shown that the modulation symbols from 0 to 23 are assigned to the resource elements (REs) in OFDM-symbol 3 in sequential order along a frequency axis. However, the order matching in the frequency domain can be changed, for example, by alternation in the frequency domain, without going beyond the scope of this invention.

In the fifth embodiment according to the principles of the present invention the mapping of the modulation symbols of each code block of the resource items, in at least one area of the resource does not depend on specific information of the control channel transmitted in the above-mentioned potcake. The example illustrated in Fig. In this example, the modulation symbols, which are carriers of encoded bits for the code block A, passed in OFDM-symbols 3 and 4 in region 1 and in OFDM-symbol 2 in region 2. Modulation symbols, which are carriers of encoded bits for the code block B, passed in OFDM-symbols 4 and 5 in region 1 and in OFDM-symbol 2 in region 2. Modulation symbols, which are carriers of encoded bits for the code block C, passed in OFDM-symbols 5 and 6 in region 1 and in OFDM-symbol 2 in region 2. Thus, the receiver can start decoding of some code blocks before you will receive all podca the RA. For example, the receiver can start decoding the code block A after reception and demodulation of resource elements (REs)used for data transmission in OFDM-symbols 2, 3 and 4.

In the sixth embodiment according to the principles of the present invention the mapping of the modulation symbols in each code block of the resource items, in at least one area of the resource does not depend on specific information of the control channel transmitted in the above-mentioned potcake, while the mapping of the modulation symbols of each code block of the resource items, in at least one other field of the resource depends on the specific information of the control channel transmitted in the above-mentioned potcake. Again using pig as an example, the number and location of resource elements (REs)used for transmission of data for the code blocks A, B and C in region 2 depends on the information contained in the index format of the control channel (CCFI), while the number and location of resource elements (REs)used for transmission of data for the code blocks A, B and C in region 1 does not depend on the information contained in the index format of the control channel (CCFI).

In the seventh embodiment according to the principles of the present invention, the number of resource elements (REs), pre is assigned for data transmission, in at least one area of the resource from many areas of resource allocated approximately the same for multiple code blocks to provide about the same protection against errors for each code block. As for the whole transport block has only one cyclic redundancy code (CEC), it is important that each code block received the maximum possible protection against errors. It should be noted that the number of available resource elements (REs)used for data transmission, may not be divisible by the number of code blocks. Thus, it is possible to provide only about the same number of resource elements (REs)used for data transfer, which is allocated to each code block. Assume that there are N1the modulation symbols for data transmission in region 1 and N2the modulation symbols for data transmission in region 2. Assume that there are Nsegcode blocks. Defineas the smallest integer greater than or equal to. Defineas the largest integer less than or equal to. Defineas the remainder of the. As an example, the number of resource elements (REs) allocated for data transmission, which is allocated to the code blockin region 1, denoted asmay be specified by the following expression:

.(1)

Similarly, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(2)

It should be noted that in this embodiment of the invention selected a slightly higher number of resource elements (REs)used for data transmission, namely, equalfor code blocks at the beginning of region 1 and a slightly lower number of resource elements (REs)used for data transmission, namely, equalfor code blocks at the end of region 1. This scheme works well in that case, if the code blocks at the beginning can have larger dimensions than the code blocks at the end. In an alternative embodiment, may be allocated a slightly lower number of resource elements (REs)used for transmission of data for the code blocks at the beginning and a slightly higher number of resource elements (REs)used on the I data for the code blocks at the end. This scheme works well in that case, if the code blocks at the beginning may have smaller dimensions than the code blocks at the end. In this case, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 1, denoted asmay be specified by the following expression:

.(3)

Similarly, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(4)

It should be noted that this alternative embodiment of the invention is still applicable if there is only one area of the resource, i.e. when all the resource elements (REs)that are designed for data transmission, belong to one and the same resource. For example, if only one area of the resource amount of resource items intended for data transfer, distributed almost equally between multiple code blocks. The number of resource items intended for data transfer, which is allocated to code BC is ka can be defined by equation (1). Alternatively, the number of resource items intended for data transfer, which is allocated to the code blockcan be defined by equation (3). It should be noted that for the case where only one resource is the total number of resource elements is equal to N1.

In the eighth embodiment according to the principles of the present invention for multiple code blocks emit approximately the same number of coded bits or the number of positions of the modulation in the modulation symbols, at least in one area of the resource, to ensure equal protection of errors for each code block. For example, assume that the order of modulation is equal to L, for example, L=4 for 16-point quadrature amplitude modulation (16-QAM). Position modulation is one of L bits, the bearer of which is the modulation symbol of order L. for Example, the modulation symbol quadrature phase-shift keying (QPSK) (L=2) has a 2 position modulation, each of which corresponds to the bit, the bearer of which is the modulation symbol. Modulation symbol of the 16-point quadrature amplitude modulation (L=4) may be a carrier of 4 bits. Thus, the modulation symbol of the 16-point quadrature amplitude modulation (16-QAM has a 4 position modulation. Therefore, in region 1 can be transferred to the total number of encoded bits is equal to N1L. In region 2 can be transferred to the total number of encoded bits is equal to N2L. the Allocation of resources can be made on the basis of the number of coded bits. As an example, the number of coded bits, which are allocated to the code blockin region 1, denoted asmay be specified by the following expression:

.(5)

Similarly, the number of coded bits, which are allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(6)

It should be noted that in this embodiment of the invention selected a slightly higher number of encoded bits, namely, equalfor code blocks at the beginning and a slightly lower number of coded bits, namely, equalfor code blocks at the end. This scheme works well in that case, if the code blocks at the beginning can have larger dimensions than the code blocks at the end. In an alternative variant which can be allocated fewer encoded bits for the code block at the beginning and a slightly higher number of encoded bits for the code block at the end. This scheme works well, in that case, if the code blocks at the beginning may have smaller dimensions than the code blocks at the end. In this case, the number of coded bits, which are allocated to the code blockin region 1, denoted asmay be specified by the following expression:

.(7)

Similarly, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(8)

Again it should be noted that this alternative embodiment of the invention is still applicable if there is only one area of the resource, i.e. when all the resource elements (REs)that are designed for data transmission, belong to one and the same resource. For example, if only one area of the resource, the number of coded bits is divided almost equally between multiple code blocks. The number of coded bits, which are allocated to the code blockcan be defined by equation (5). Alternatively, the number of coded bits, the cat is PoE allocated to the code block can be defined by equation (7). It should be noted that for the case where only one resource is the total number of resource elements is equal to N1.

In the ninth embodiment (of the invention) according to the principles of the present invention, the number of resource elements (REs)used for data transmission, at least in one area of the resource allocate therefore, in order to achieve approximately equal to the velocity encoding for multiple code blocks to provide the same protection against errors in each code block. For example, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 1, denoted asmay be specified by the following expression:

,(9)

where- block size information of the code blockand

(10)

represents a number that. It should be noted the following: definitionpreferably includes tail bits, although it is not mandatory.

Similarly, the number of resource elements (REs)used DL the data which is allocated to the code blockin region 2, denoted asmay be specified by the following expression:

,(11)

where

(12)

represents a number that.

It should be noted that in this embodiment of the invention selected a slightly higher number of resource elements (REs)used for transmission of data for the code blocks at the beginning and a slightly lower number of resource elements (REs)used for transmission of data for the code blocks at the end. This scheme works well in that case, if the code blocks at the beginning can have larger dimensions than the code blocks at the end. In an alternative embodiment, may be allocated a slightly lower number of resource elements (REs)used for transmission of data for the code blocks at the beginning and a slightly higher number of resource elements (REs)used for transmission of data for the code blocks at the end. This scheme works well in that case, if the code blocks at the beginning may have smaller dimensions than the code blocks at the end. In this case, the number of resource elements (REs)used for data transfer,which is allocated to the code block in region 1, denoted asmay be specified by the following expression:

.(13)

Similarly, the number of resource elements (REs)used for data transfer, which is allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(14)

Again it should be noted that this alternative embodiment of the invention is still applicable if there is only one area of the resource, i.e. when all the resource elements (REs)that are designed for data transmission, belong to one and the same resource. For example, if only one resource is the number of resource elements (REs)used for data transfer, distributed in such a way as to achieve approximately the same encoding speed. The number of resource elements (REs)used for data transfer, which is allocated to the code blockcan be defined by equation (9). Alternatively, the number of resource elements (REs)used for data transfer, which is allocated to the code blockmay be given by equation (13. It should be noted that for the case where only one resource is the total number of resource elements is equal to N1.

In the tenth embodiment according to the principles of the present invention, the number of coded bits, or the number of positions of the modulation in the modulation symbols, at least in one area of the resource selected in such a way as to achieve approximately the same speed encoding multiple code blocks to provide almost the same protection against errors in each code block. For example, the number of coded bits, which are allocated to the code blockin region 1, denoted asmay be specified by the following expression:

,(15)

where

(16)

represents a number that.

Similarly, the number of coded bits, which are allocated to the code blockin region 2, denoted asmay be specified by the following expression:

,(17)

where

(18)

represents a number that.

It should be noted that in this embodiment of the invention selected a slightly higher number of encoded bits for the code block at the beginning and a slightly lower number of coded bits for the code block at the end. This scheme works well in that case, if the code blocks at the beginning can have larger dimensions than the code blocks at the end. In an alternative embodiment, may be allocated fewer encoded bits for the code block at the beginning and a slightly higher number of encoded bits for the code block at the end. This scheme works well in that case, if the code blocks at the beginning may have smaller dimensions than the code blocks at the end. In this case, the number of coded bits, which are allocated to the code blockin region 1, denoted asmay be specified by the following expression:

.(19)

Similarly, the number of coded bits, which are allocated to the code blockin region 2, denoted asmay be specified by the following expression:

.(20)

Snowslide be noted, this variant embodiment of the invention is still applicable if there is only one area of the resource, i.e. when all the resource elements (REs)that are designed for data transmission, belong to one and the same resource. For example, if only one area of the resource, the number of coded bits allocated in such a way as to achieve approximately the same coding rate among the set of code blocks. The number of coded bits, which are allocated to the code blockcan be defined by equation (15). Alternatively, the number of resource elements (REs)used for data transfer, which is allocated to the code blockcan be defined by equation (19). It should be noted that for the case where only one resource is the total number of resource elements is equal to N1.

In the eleventh embodiment according to the principles of the present invention for transmission of some data using only the resource elements (REs) in region 1. In this case, can be completely eliminated, the risk of impaired performance due to errors in the index format of the control channel (CCFI), suggesting that the allocation of resources of the downward communication channel and transmission format are already known the bag into the receiver.

1. A method of transferring information bits by using a variety of resources in a wireless communication system, comprising stages, which are:
segment information bits to be transferred into multiple code blocks;
encode information bits in each code block;
allocate a certain amount of resources for each of the multiple code blocks with the larger amount of resources to allocate at least one code block at the end, and fewer resources to allocate at least one code block at the beginning, if N1cannot be evenly divided by Nsegwhere N1the number of symbols available for data transmission, and Nseg- the number of code blocks; and
transmit data bits to the receiver via one or more antennas based on the allocated resources.

2. The method according to claim 1, in which the amount of resources allocated for the code block (j), is set according to the following expression:

3. The method according to claim 1, in which the information bits are passed through the element podagra, which includes the area resource for information bits and another area of resource bits for control, and the area resource for information bits and the other area resource for bits control contain at least one with whom mvol multiplexing, each symbol multiplexing corresponds to the unit time, and each character multiplexing contains many resources for the unit of frequency.

4. The method according to claim 3, in which control bits contain the index of the format of the control channel, and the pointer of the format of the control channel indicates the number of characters multiplexing used bits for control.

5. The method according to claim 1, further comprising stages, which are:
alternating coded information bits;
modulate peremerzanie information bits to form
the modulation symbols; and
establish the conformity of the modulation symbols allocated resources.

6. The method according to claim 3, in which the map information bits field of the resource in ascending order, starting with the multiplexing symbol having the smallest index in the time domain.

7. Device for transmitting information bits by using a variety of resources in a wireless communication system, comprising:
block coding to encode the information bits in each code block;
a control unit for segmenting information bits to be transmitted on the multiple code blocks, and identifying a set of resources for each of the multiple code blocks with the larger amount of resources allocated is Aut for at least one code block at the end, and fewer resources to allocate at least one code block at the beginning, if N1cannot be evenly divided by Nsegwhere N1the number of symbols available for data transmission, and Nseg- the number of code blocks; and
a transmitter for transmitting information bits in the receiver via one or more antennas based on the allocated resources.

8. The device according to claim 7, in which the amount of resources allocated for the code block (j), is set according to the following expression:

9. The device according to claim 7, in which data bits are passed through the element podagra, which includes the area resource for information bits and another area of resource bits for control, and the area resource for information bits and the other area resource for bits control contain at least one multiplexing symbol, and each symbol multiplexing corresponds to a unit of time and each character multiplexing contains many resources for the unit of frequency.

10. The device according to claim 9, in which control bits contain the index of the format of the control channel, and the pointer of the format of the control channel indicates the number of characters multiplexing used bits for control.

11. The device according to claim 7, further comprising:
block interleave to interleave coded informationinfo;
block modulation for modulation perenesennyj information bits to form modulation symbols; and
block matching to match the modulation symbols allocated resources.

12. The device according to claim 9, in which the map information bits field of the resource in ascending order, starting with the multiplexing symbol having the smallest index in the time domain.

13. The method of receiving information bits transmitted through a variety of resources in a wireless communication system, comprising stages, which are:
take the information bits are encoded in multiple code blocks, using one or more antennas; and
receive the decoded information bits
moreover, many code blocks allocated a lot of resources, with a greater amount of resources to allocate at least one code block at the end, and fewer resources to allocate at least one code block at the beginning, if N1cannot be evenly divided by Nsegwhere N1the number of symbols available for data transmission, and Nseg- the number of code blocks.

14. The method according to item 13, in which the amount of resources allocated for the code block (j), is set according to the following expression:

15. The method according to item 13, in which the information bits received through the element podagra, which includes the area resource for information bits and other area resource for bits control
moreover, the area resource for information bits and the other area resource for bits control contain at least one multiplexing symbol, and each symbol multiplexing corresponds to the unit time, and each character multiplexing contains many resources for the unit of frequency.

16. The method according to item 15, in which control bits contain the index of the format of the control channel, and the pointer of the format of the control channel indicates the number of characters multiplexing used bits for control.

17. The method according to item 13, further comprising stages, which are:
restore the resources allocated to the symbols of the modulation
demodulateur the modulation symbols into data bits; and
remove interleaving information bits.

18. The method according to clause 16, which set the information bits according to one or more areas of resource in ascending order, starting with the multiplexing symbol having the smallest index in the time domain.

19. A device for receiving information bits transmitted through a variety of resources in the wireless system with the ides, contains:
a receiver for receiving information bits encoded in multiple code blocks, using one or more antennas; and
a decoder for decoding information bits,
moreover, many code blocks allocated a lot of resources, with a greater amount of resources to allocate at least one code block at the end, and fewer resources to allocate at least one code block at the beginning, if N1cannot be evenly divided by Nsegwhere N1the number of symbols available for data transmission, and Nseg- the number of code blocks.

20. The device according to claim 19, in which the amount of resources allocated for the code block (j), is set according to the following expression:

21. The device according to claim 19, in which the information bits received through the element podagra, which includes the area resource for information bits and another area of resource bits for control, and the area resource for information bits and the other area resource for bits control contain at least one multiplexing symbol, and each symbol multiplexing corresponds to the unit time, and each character multiplexing contains many resources for the unit of frequency.

22. The device according to item 21,in which control bits contain the index of the format of the control channel, and the pointer of the format of the control channel indicates the number of characters multiplexing used bits for control.

23. The device according to claim 19, further comprising:
block recovery for recovery of resources allocated to the symbols of the modulation
a demodulation unit for demodulating the modulation symbols into data bits; and
the unit deteremine to remove the interleave information bits.

24. The device according to clause 16, which set the information bits according to one or more areas of resource in ascending order, starting with the multiplexing symbol having the smallest index in the time domain.



 

Same patents:

FIELD: information technology.

SUBSTANCE: invention discloses a base station used in a mobile communication system comprising several cells consisting of several sectors. The base station has a synchronisation channel generating unit which generates a synchronisation channel for use during cell search by a user terminal, and a transmission unit which wirelessly transmits a signal, having a synchronisation channel. The synchronisation channel has a primary synchronisation channel and a secondary synchronisation channel. The primary synchronisation channel has a series of several types, and the secondary synchronisation channel, transmitted to a cell sector, has a code, predetermined based on a given polynomial generating equation, which corresponds to the primary synchronisation channel.

EFFECT: reduced effect of intersymbol interference and shorter time for cell search.

11 cl, 14 dwg

FIELD: information technology.

SUBSTANCE: techniques for determining cell timing in a wireless communication system are described. User equipment (UE) may obtain received samples which include at least one synchronisation signal generated based on a cell identifier. The UE may correlate the received samples with the at least one synchronisation signal in the time domain at different time offsets to obtain energies for multiple timing hypotheses. The UE may identify at least one detected peak based on the energies for the multiple timing hypotheses. The UE may then update a set of candidate peaks based on the at least one detected peak and may identify a candidate peak with signal strength exceeding the signal strength of a peak being tracked. The UE may provide the timing of the identified candidate peak as the timing of the cell.

EFFECT: faster cell search.

35 cl, 11 dwg, 1 tbl

Base station // 2438248

FIELD: information technology.

SUBSTANCE: base station, which sends a synchronisation signal over a synchronisation channel using the system frequency band which is less than the maximum system frequency band, in a radio communication system which supports use of multiple frequency bands, has a multiplexing unit configured to multiplex the synchronisation channel and a channel other than the synchronisation channel, based on reception filter characteristic used in the mobile station. The multiplexing unit can accommodate the synchronisation channel and the channel other than the synchronisation channel at continuous subcarriers. In another version, the multiplexing unit can allocate a protective band or a cyclic prefix for the transition band of the reception filter.

EFFECT: high accuracy of detecting signals.

2 cl, 7 dwg

FIELD: information technologies.

SUBSTANCE: method to assign a sequence and a device to assign a sequence are used in a system, where multiple different Zadoff-Chu sequences or GCL sequences are assigned to one cell, at the same time a number of arithmetic operations and extent of correlation circuit integration at a receiving end may be reduced. According to these method and device, at ST201 a counter (a) and a number (p) of current assignments of a sequence are initialised, and at ST202 it is identified whether the number (p) of current sequence assignments matches the number (K) of assignments to one cell. At ST203 it is identified whether the number (K) of assignments to one cell is odd or even. If K is even, at ST204-ST206, numbers of sequences (r=a and r=N-a), which are currently not assigned, are combined and then assigned. If K is odd, at ST207-ST212, for those sequences, to which a pair may not be selected, one of sequence numbers (r=a and r=N-a) is assigned, which are currently not assigned.

EFFECT: reduced volume of calculations.

8 cl, 17 dwg

FIELD: information technology.

SUBSTANCE: first and second sequences can be generated via circular shift a base sequence to a first and a second value, respectively. The base sequence can be a CAZAC (constant amplitude zero auto-correlation), PN (pseudorandom noise) sequence or some other sequence with good correlation properties. Circular shift of the first and second sequences can be defined based on a switching pattern. A first modulated sequence can be generated based on the first sequence and a first modulation symbol, and can then be sent over a first time interval. A second modulated sequence can be generated based on the second sequence and a second modulation symbol, and can then be sent over a second time interval. Each modulated sequence can be sent at K successive subcarriers using a localised frequency division multiplex (LFDM) scheme.

EFFECT: high throughput of the system with transmission of control information.

44 cl, 14 dwg

FIELD: information technology.

SUBSTANCE: method of transmitting control signal involves steps for multiplexing a plurality of 1-bit control signals within a given time-frequency domain via code division multiple access (CDMA) and transmitting the multiplexed control signals, wherein the plurality of the 1-bit control signals includes a plurality of 1-bit control signals for a specific transmitting side.

EFFECT: high efficiency and reliability of multiplexing.

10 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: disclosed is a mobile station having: a module for correcting the transmission time interval which is configured to determine the transmission time interval in the mobile station - base station direction in units of the length of transmission time intervals in the base station - mobile station direction, such that the transmission time interval in the mobile station - base station direction is longer than that in the base station - mobile station direction; a transmission module configured to transmit a signal in the mobile station - base station direction in a transmission time interval defined by the module for correcting the transmission interval.

EFFECT: increase in the information transmission unit element on the time axis or frequency axis depending on conditions of the communication environment, which enables to lower the frequency of introducing the control channel and increase data transmission efficiency.

2 cl, 11 dwg

FIELD: information technology.

SUBSTANCE: base station communicates with a mobile station using OFDM via a downlink. The base station includes a clock signal generating module which generates an additional clock channel, a multiplication module which multiplies the scrambling code with the additional clock channel, and a transmitting module which transmits the additional clock channel which has been multiplied with the scrambling code. Cell-unique information is detected using the additional clock channel.

EFFECT: faster cell search.

17 cl, 13 dwg

FIELD: information technology.

SUBSTANCE: transmitting device has a frequency scheduling unit which is configured to allocate each user with either frequency blocks, which are serial carrier frequency blocks obtained by dividing the frequency band of the system, or distributed frequency blocks which are carrier frequency blocks which are discretely distributed in the frequency band of the system; and a conversion unit which is configured to associate transmitted data to frequency blocks or distributed frequency blocks in accordance with the allocation result. The frequency scheduling unit is configured to allocate distributed frequency blocks using frequency blocks as structural units and allocating sub-blocks obtained by dividing corresponding distributed frequency blocks.

EFFECT: high transmission capacity which enables the system to support localised and distributed data transmission.

23 cl, 41 dwg

FIELD: information technology.

SUBSTANCE: during transmission of a cell-specific pilot signal by a base station which can mix and then transmit unicast data and broadcast/multicast data as downstream data, the difference between the initial phase of a cell-specific pilot signal transmitted in a subframe in which the base station transmits the unicast data and the initial phase of a cell-specific pilot signal transmitted in the next subframe is equal to the difference between the initial phase of a cell-specific pilot signal transmitted in a subframe in which the base station transmits the broadcast/multicast data and the initial phase of a cell-specific pilot signal transmitted in the next subframe.

EFFECT: cell searching without increasing the scale or complicating the structure of the mobile station.

8 cl, 11 dwg

FIELD: information technologies.

SUBSTANCE: in the method of improved transfers, which probe a channel between a basic station and user equipment in the telecommunications system, user equipment receives (S0) assigned transfer circuit, probing the channel, from the basic station, and sends (S1) signal, which probes the channel, to the basic station on the basis of the assigned circuit that probes the transfer channel and available data for an upperlink of the user equipment.

EFFECT: more efficient usage of upperlink for transfers that probe the channel.

17 cl, 9 dwg

FIELD: information technologies.

SUBSTANCE: system for alarm to an application, when requested speeds of data transfer and quality of service are impossible to achieve, using wireless data transfer of orthogonal frequency division multiplexing (OFDM), and the application, in response, either repeatedly matches quality of service (QoS) and speed of data transfer, or waits until the requested speed of data transfer and QoS are provided.

EFFECT: provision of guaranteed characteristics of transfer.

18 cl, 6 dwg

Receiver // 2441319

FIELD: radio engineering.

SUBSTANCE: receiver for reception of a radio-frequency signal comprises a band filter, a computer and a controller. The band filter has a turned pass band and lets a received radio-frequency signal through within the pass band for generation of a filtered signal. The computer calculates the signal/noise ratio of the received radio-frequency signal on the basis of the filtered signal. The controller (20) tunes the filter's pass band so that the calculated signal/noise ratio becomes maximum.

EFFECT: minimised effect of a noise wave.

7 cl, 3 dwg

Receiver // 2441319

FIELD: radio engineering.

SUBSTANCE: receiver for reception of a radio-frequency signal comprises a band filter, a computer and a controller. The band filter has a turned pass band and lets a received radio-frequency signal through within the pass band for generation of a filtered signal. The computer calculates the signal/noise ratio of the received radio-frequency signal on the basis of the filtered signal. The controller (20) tunes the filter's pass band so that the calculated signal/noise ratio becomes maximum.

EFFECT: minimised effect of a noise wave.

7 cl, 3 dwg

FIELD: information technologies.

SUBSTANCE: method for provision of data in a mobile terminal, which includes detection of whether at least one light element was touched or not among many light elements contained in the terminal display, and control of glow of at least one light element, if the detection stage identifies that at least one light element was touched.

EFFECT: expansion of functional capabilities due to change of information displayed on the terminal screen by a user.

28 cl, 8 dwg

FIELD: information technology.

SUBSTANCE: method provides such a design of the encoder in a speech codec that, after a predetermined idle time (standby period), it recalculates average energy and an autocorrelation function. Administrative centres in the network inform the encoder on the idle time set in the data transmission network.

EFFECT: improved implementation of discontinuous transmission in scalable speech codecs.

9 cl, 1 dwg

FIELD: information technology.

SUBSTANCE: result is achieved by receiving a received (RX) input RF-signal, having a TX-leakage signal; subtracting the estimate of the TX-leakage signal from the input signal and generating an estimate of the TX-leakage signal which does not include the TX-signal itself, based on the output signal and an unmodulated reference signal at the carrier frequency of the TX-leakage signal.

EFFECT: reduced negative effect of second-order distortion and distortion from cross-modulation of signal leakage from the transmitting device.

47 cl, 12 dwg

FIELD: radio engineering.

SUBSTANCE: transmitting device of helicopter radar station includes travelling-wave tube (TWT), high-voltage rectifier, voltage divider, collector power source, anode power source, modulator, as well as filament voltage power source, transformer, rectifier, the first switching device, the second switching device, input path, output path, waveguide of input microwave signal W1, waveguide of output microwave signal W2, waveguide connection W3, waveguide connection W4, plug pin of input pulse of transmitter start-up, plug pin for transfer of input alternating supply voltage of phase A, plug pin for supply of input alternating supply voltage of phase B, plug pin for supply of input alternating supply voltage of phase C, and plug pin for supply of input direct supply voltage. At that, modulator consists of the first stabiliser, control diagram, the second stabiliser and switching device.

EFFECT: improving operating reliability of transmitting device of helicopter radar station in millimetre wave range so that inconsiderable mass and dimension characteristics can be provided.

1 dwg

FIELD: information technology.

SUBSTANCE: method comprises steps for receiving the signal of a first frequency band, obtaining layer-1 information from a preamble of the first time-frequency slicing (TFS) signal frame of the received signal, said layer-1 information including a radio frequency (RF) channel identifier of the first TFS signal frame, containing a physical layer pipe (PLP) in a TFS super-frame structure, analysing the TFS signal frame using layer-1 information and obtaining PLP of the TFS signal frame and converting the PLP to a service stream.

EFFECT: high efficiency of transmitting data.

11 cl, 81 dwg

FIELD: information technology.

SUBSTANCE: systems and methodologies are described, which facilitate scrambling of downlink reference signals utilising a pseudo-random sequence (PRS) corresponding to a primary synchronisation code (PSC) and secondary synchronisation code (SSC) combination. Use of the combination allows for orthogonal sequencing to be removed from the scrambling. This can be beneficial, for example, where resources required for the orthogonalisation of the reference signal outweigh the benefit of utilising the orthogonal sequences. In such scenarios, selective scrambling can be utilised such that the orthogonal sequence or instead the PSC/SSC combination can be provided to efficiently use advantages of both mechanisms in the given scenarios.

EFFECT: increased noise immunity.

45 cl, 11 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

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