CN107888248A - Transmit the method, apparatus and user equipment of data - Google Patents

Transmit the method, apparatus and user equipment of data Download PDF

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Publication number
CN107888248A
CN107888248A CN201610874370.7A CN201610874370A CN107888248A CN 107888248 A CN107888248 A CN 107888248A CN 201610874370 A CN201610874370 A CN 201610874370A CN 107888248 A CN107888248 A CN 107888248A
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China
Prior art keywords
sinr
target
index information
codebook index
enb
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CN201610874370.7A
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Chinese (zh)
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CN107888248B (en
Inventor
韩元超
彭小雨
方舒
岳宗笛
张鹏
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting

Abstract

The invention discloses a kind of method, apparatus and user equipment for transmitting data, belong to wireless communication technology field.Method includes：First UE determines that multiple first SINR values and multiple first codebook index informations form the first SINR set, and at least one second SINR value for receiving at least one 2nd UE broadcast is gathered with least one second code book index information set into the 2nd SINR；According to the first SINR set and the 2nd SINR set, the device identification of the first object codebook index information of first object SINR value, the second target codebook index information of the second target sinr values and the second target UE is determined, first object codebook index information, the second target codebook index information and the second target UE device identification are sent to eNB.Due to being matched based on multiple first SINR values with the second SINR value, pairing probability can be improved；Pairing processing is carried out by each UE respectively, pairing processing is carried out one by one to each UE without interaction center, pairing duration is shortened, improves matching efficiency, reduce data transmission delay.

Description

Transmit the method, apparatus and user equipment of data
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method, apparatus and user equipment for transmitting data.
Background technology
Multi-user's multiple-input, multiple-output (Multi-User Multiple-Input-Output, MU MIMO) technology is to utilize sky Division multiple access technology, the technology of multiple pairing user equipmenies (User Equipment, UE) is serviced on same running time-frequency resource.But It is due to that can not cooperate between multiple pairing UE, it is necessary to pass through precoding when being carried out data transmission by MU-MIMO technologies Technology eliminates the interference between multiple pairing UE；Also, multiple pairing UE need to carry out using the different vectors of same codebook Precoding.
, it is necessary to determine to match UE by interaction center, specifically, for wireless before data being transmitted between UE and eNB The each code book of each UE in system, the UE in channel matrix and default codebook set, it is determined that using each code book Each column vector carries out Signal to Interference plus Noise Ratio (Signal to Interference plus Noise during precoding Ratio, SINR) value, obtain multiple SINR values；A maximum SINR value is selected from multiple SINR values, is sent to interaction center Codebook index information corresponding to the maximum SINR value and the maximum SINR value, codebook index information include code book mark and column vector Mark, so that interaction center obtains the maximum SINR value and codebook index information of each UE feedbacks.Interaction center is according to every Individual UE maximum SINR value and codebook index information, determine that one assembles to UE, to eNB transmit this assemble device identification to UE and This assembles the codebook index information to UE.ENB assembles the codebook index information to UE according to this, using MU communication patterns, is working as On preceding running time-frequency resource, while assembled with this and UE is carried out data transmission.
During the present invention is realized, inventor has found that prior art at least has problems with：
Because each UE only feeds back a SINR value, when and code book quantity less in UE number is more, UE successful matchings Probability is low；If each UE feeds back multiple SINR values, it is time-consuming longer that interaction center carries out pairing to multiple UE, causes data to pass Defeated time delay is big.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of method, apparatus and user equipment for transmitting data. Technical scheme is as follows：
In a first aspect, the embodiments of the invention provide a kind of method for transmitting data, methods described is applied in the first user In equipment UE, including：
The first Signal to Interference plus Noise Ratio SINR set and the 2nd SINR set are determined, is wrapped in the first SINR set Multiple first SINR values of the first UE and multiple first codebook index informations are included, the 2nd SINR set includes at least one Individual second SINR value and at least one second codebook index information, at least one second SINR value and at least one second code This index information belongs at least one 2nd UE；
According to the first SINR set and the 2nd SINR set, it is determined that the first of the first object SINR value of pairing The device identification of target codebook index information, the second target codebook index information of the second target sinr values and the second target UE；
The first object codebook index information, the second target codebook index information and described are sent to base station eNB Second target UE device identification, so that the eNB is according to the first object codebook index information, the second target code book The device identification of index information and the second target UE, using multi-user MU communication patterns respectively with the first UE and described Second target UE carries out data transmission.
In embodiments of the present invention, the first SINR set includes the first UE multiple first SINR values, therefore, based on the One UE multiple first SINR values and the second SINR value is matched, and can improve pairing probability；Also, above-mentioned processing is based on, Pairing processing is carried out by each UE respectively, pairing processing is carried out one by one to each UE without interaction center, shortens pairing duration, Matching efficiency is improved, and then reduces data transmission delay.
It is described to be gathered according to the first SINR set and the 2nd SINR in a possible design, it is determined that matching somebody with somebody To the first object codebook index information of first object SINR value, the second target sinr values the second target codebook index information With the second target UE device identification, including：
According to the first SINR set and the 2nd SINR set, it is determined that the SINR value of at least one set of pairing；
From the SINR value of at least one set of pairing, when selection communicates with eNB the one of achievable rate maximum assemble to SINR value, the first object SINR value and the second target sinr values that the SINR value of the pairing of selection includes；
Obtain the first object SINR value first object codebook index information, the second of second target sinr values The device identification of target codebook index information and the second target UE of transmission second target sinr values.
In embodiments of the present invention, due to there may be multigroup pairing in the first SINR set and the 2nd SINR set SINR value, assembled from the one of multigroup achievable rate maximum matched when selecting to communicate with eNB in SINR value to SINR value, so as to Enough improve efficiency of transmission.
It is described to send the first object codebook index information, second mesh to eNB in another possible design Before marking codebook index information and the second target UE, in addition to：
According to the first object SINR value and second target sinr values, determine that the first UE is led to using the MU The first achievable rate when letter pattern communicates with the eNB；
Determine the second achievable rate when the first UE is communicated using single user SU communication patterns with the eNB；
If first achievable rate is not less than second achievable rate, perform described to eNB transmissions described first The step of device identification of target codebook index information, the second target codebook index information and the second target UE.
In embodiments of the present invention, wireless communication system includes MU communication patterns and SU communication patterns；MU is calculated respectively First achievable rate and the second achievable rate corresponding to communication pattern and SU communication patterns；If the first achievable rate is not less than the Two achievable rates, it is determined that using MU communication patterns, first object codebook index information, the second target code book index are sent to eNB The device identification of information and the second target UE, use eNB and carry out data transmission between MU communication patterns and the first UE, so as to carry High efficiency of transmission.
It is described to determine the first UE using single user SU communication patterns and the eNB in another possible design The second achievable rate during communication, including：
The 3rd SINR value when the first UE is communicated using the SU communication patterns with the eNB is obtained, and, obtain The 4th SINR value when the second target UE is communicated using the SU communication patterns with the eNB；
According to the 3rd SINR value and the 4th SINR value, determine the first UE using the SU patterns with it is described The second achievable rate when eNB communicates.
In another possible design, methods described also includes：
If first achievable rate is less than second achievable rate, the letter of the first UE is sent to the eNB Road state CSI information, so that the eNB enters line number according to the CSI information using the SU communication patterns and the first UE According to transmission.
In embodiments of the present invention, if the first achievable rate is less than the second achievable rate, it is determined that using SU communication patterns, The first UE CSI information is sent to eNB, eNB is used and carries out data transmission between SU communication patterns and the first UE, so as to improve Efficiency of transmission.
In another possible design, the first SINR of determination set, including：
Multiple column vectors are selected from default codebook set；
The channel matrix of each column vector and the first UE in the multiple column vector, determines the first UE The first SINR value when each column vector carries out precoding is respectively adopted；
The codebook index information of each column vector is identified as to the first SINR value of each column vector First codebook index information.
In embodiments of the present invention, multiple column vectors are selected from default codebook set, it is more to calculate the first UE uses respectively Each column vector in individual column vector carries out the first SINR value during precoding, obtains multiple first SINR values, so as to based on the One UE multiple first SINR values and the second SINR value is matched, and can improve pairing probability.
In another possible design, the 2nd SINR of determination set, including：
Pass through the device-to-device D2D chains between each 2nd UE in the first UE and at least one 2nd UE Road receives at least one second SINR value of at least one 2nd UE broadcast and at least one second code book rope Fuse ceases.
In embodiments of the present invention, at least one 2nd SINR of at least one 2nd UE broadcast is received by D2D links Value, the first UE data rate can be ensured；Also, communicated by D2D links, the traditional eNB of required power ratio makees More power are saved for the communication mode of relaying, so as to save power.
In another possible design, methods described also includes：
SINR value the first SINR value of maximum preset number and the present count are selected from the first SINR set First codebook index information of the first SINR value of mesh；
By the D2D links between each 2nd UE in the first UE and at least one 2nd UE, to described At least one 2nd UE broadcasts first yard of the first SINR value of the first SINR value of the preset number and the preset number This index information.
In embodiments of the present invention, the first SINR value of preset number is broadcasted by least one 2nd UE of D2D chain road directions With the first codebook index information of preset number the first SINR value so that the 2nd UE can also carry out pairing processing, from Pairing processing is carried out one by one to each UE without interaction center, shortens pairing duration, improves matching efficiency, and then reduce Data transmission delay.
In another possible design, methods described also includes：
The first object SINR value and second target sinr values are sent to the eNB, so that the eNB is according to institute First object SINR value and second target sinr values are stated, it is determined that transmitting data with the first UE and the second target UE Modulation system.
In embodiments of the present invention, first object SINR value and the second SINR value are fed back to eNB, so as to which eNB is according to first Target sinr values and the second SINR value, determine modulation system, and data to be transmitted is modulated by the modulation system, improved Transmit the efficiency of data.
Second aspect, the embodiments of the invention provide a kind of device for transmitting data, described device is applied in the first user In equipment UE, the device includes at least one unit, and at least one unit is used to realize above-mentioned first aspect or first aspect In the method for transmission data that is provided of any one possible implementation.
The third aspect, the embodiments of the invention provide a kind of user equipment (UE), the UE comprises at least processor and transmitter, The UE can also include receiver, and the UE is used to perform any one possible realization side in above-mentioned first aspect or first aspect The method for the transmission data that formula is provided.
The embodiments of the present invention second are to the technique effect that the third aspect is obtained technology corresponding with first aspect The technique effect that means obtain is approximate, repeats no more herein.
In summary, the beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
In embodiments of the present invention, the first SINR set includes the first UE multiple first SINR values, therefore, based on the One UE multiple first SINR values and the second SINR value is matched, and can improve pairing probability；Also, above-mentioned processing is based on, Pairing processing is carried out by each UE respectively, pairing processing is carried out one by one to each UE without interaction center, shortens pairing duration, Matching efficiency is improved, and then reduces data transmission delay.
Brief description of the drawings
Fig. 1 is a kind of system architecture diagram for transmitting data provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of user equipment provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of application program module provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of another application program module provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of another application program module provided in an embodiment of the present invention；
Fig. 6 is a kind of method flow diagram for transmitting data provided in an embodiment of the present invention；
Fig. 7 is a kind of block diagram for transmitting data provided in an embodiment of the present invention；
Fig. 8 is the block diagram of another transmission data provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention Formula is described in further detail.
Referring to Fig. 1, the embodiments of the invention provide a kind of system architecture diagram for transmitting data, the system includes first UE101, at least one 2nd UE102 and eNB103；First UE101 and at least one 2nd UE102 is respectively between eNB103 Carry out data transmission.Data biography is carried out by D2D links between each UE in first UE101 and at least one 2nd UE102 It is defeated.
Before the first UE101 transmits data to eNB103, the first UE101 obtains channel matrix and default codebook set, Default codebook set includes multiple code books, and a code book includes multiple column vectors；Then the first UE101 is from default codebook set The middle multiple code books of selection, multiple column vectors are selected from multiple code books of selection；For any column vector, the first UE101 according to The channel matrix and the column vector, calculate the first SINR value when the first UE101 carries out precoding using the column vector；So as to To multiple first SINR values, by the first code book of each first SINR value in multiple first SINR values and multiple first SINR values Index information is formed in the first SINR set.
Codebook index information includes code book mark and column vector mark；Code book mark can be that code book is numbered, column vector mark Knowing can be that column vector is numbered.
First UE101 selects SINR value the first SINR value of maximum preset number and present count from the first SINR set First codebook index information of the first SINR value of mesh, passes through each second in the first UE101 and at least one 2nd UE102 D2D links between UE102, the first SINR of the first SINR value of the preset number and preset number is broadcasted at least one UE First codebook index information of value.
Equally, any 2nd UE102 can also broadcast the second code book of the 2nd UE102 the second SINR value and the second SINR value Information, the first UE101 pass through the D2D links between each 2nd UE102 in the first UE101 and at least one 2nd UE102 At least one second SINR value of at least one UE broadcast and at least one second codebook index information are received, by least one the Two SINR values are gathered with least one second code book index information set into the 2nd SINR.
First UE101 gathers according to the first SINR set and the 2nd SINR, it is determined that the of the first object SINR value of pairing The device identification of one codebook index information, the second target codebook index information of the second target sinr values and the second target UE, to ENB103 sends first object codebook index information, the second target codebook index information and the second target UE device identification, from And eNB103 is according to the device identification of first object codebook index information, the second target codebook index information and the second target UE, Data are transmitted using between MU communication patterns and the first UE101 and the second target UE.
In embodiments of the present invention, the first SINR set includes the first UE101 multiple first SINR values, therefore, base Matched in the first UE101 multiple first SINR values with the second SINR value, pairing probability can be improved；Also, based on upper Processing is stated, pairing processing is carried out by each UE respectively, pairing processing is carried out one by one to each UE without interaction center, shortens and matches somebody with somebody To duration, matching efficiency is improved, and then reduce data transmission delay.
Referring to Fig. 2, a kind of structural representation for the UE20 being related to it illustrates exemplary embodiment of the present.The UE20 can To be above-mentioned the first UE101 or the 2nd UE102；The UE10 includes processor 201, transmitter 202, memory 203 and net Network interface 204.Wherein, memory 203 and network interface 204 are connected with processor 201 and transmitter 202 respectively；Memory 203 For store program codes, program code includes computer-managed instruction, and processor 201 and transmitter 202 are used to perform storage The program code stored in device 203, for realizing the relevant treatment of data transfer, and network interface 204 and other can be passed through UE or eNB are communicated.
Processor 201 includes one or more than one processing core.Processor 21 passes through runs software program and mould Block, so as to perform various function application and data processing.
Optionally, UE also includes the grade part of bus 205.Wherein, memory 203 passes through bus respectively with network interface 204 205 are connected with processor 201.
Memory 203 can be used for storage software program and module.Specifically, memory 203 can storage program area 2031st, the application program module 2032 needed at least one function.Operating system 2031 can be real time operating system (Real Time eXecutive, RTX), LINUX, UNIX, WINDOWS or OS X etc operating system.
Referring to Fig. 3, a kind of schematic diagram for the application program module 2032 being related to it illustrates exemplary embodiment of the present. As shown in figure 3, the application program module 2032 can be the hairs of the first determining module 2032a, the second determining module 2032b and first Send module 2032c.
First determining module 2032a, for determining the first SINR set and the 2nd SINR set.
Second determining module 2032b, for being gathered according to the first SINR set and the 2nd SINR, it is determined that the first mesh of pairing Mark first object codebook index information, the second target codebook index information and the second target of the second target sinr values of SINR value UE device identification.
First sending module 2032c, for sending first object codebook index information, the second target code book to base station eNB The device identification of index information and the second target UE.
Second determining module 2032b, it is additionally operable to according to the first SINR set and the 2nd SINR set, it is determined that at least one set is matched somebody with somebody To SINR value；From the SINR value of at least one set pairing, selection when being communicated with eNB the one of achievable rate maximum assemble to SINR value, the first object SINR value and the second target sinr values that the SINR value of the pairing of selection includes；Obtain first object The first object codebook index information of SINR value, the second target codebook index information of the second target sinr values and transmission second Second target UE of target sinr values device identification.
First determining module 2032a, it is additionally operable to select multiple column vectors from default codebook set；According to multiple column vectors In each column vector and the first UE channel matrix, determine that the first UE is respectively adopted the when each column vector carries out precoding One SINR value；The codebook index information of each column vector is identified as to the first code book of the first SINR value of each column vector Index information.
First determining module 2032a, is additionally operable to by between each 2nd UE in the first UE and at least one 2nd UE Device-to-device D2D links receive at least one second SINR value of at least one 2nd UE broadcast and at least one second code This index information.
Referring to Fig. 4, the application program module 2032 can also be the 3rd determining module 2032d, the 4th determining module 2032e With the second sending module 2032f.
3rd determining module 2032d, for according to first object SINR value and the second target sinr values, determining that the first UE is adopted The first achievable rate when being communicated with MU communication patterns with eNB.
4th determining module 2032e, second when being communicated for the first UE of determination using single user SU communication patterns with eNB Achievable rate.
Second sending module 2032f is used for the channel status CSI information that the first UE is sent to eNB.
4th determining module 2032e, it is additionally operable to obtain the 3rd SINR when the first UE is communicated using SU communication patterns with eNB Value, and, obtain the 4th SINR value when the second target UE is communicated using SU communication patterns with eNB；According to the 3rd SINR value and 4th SINR value, determine the second achievable rate when the first UE is communicated using SU patterns with eNB.
Referring to Fig. 5, the application program module 2032 can also be selecting module 2032g and broadcast module 2032h.
Selecting module 2032g, for selecting the first SINR of SINR value maximum preset number from the first SINR set First codebook index information of the first SINR value of value and preset number.
Broadcast module 2032h, for passing through the D2D chains between each 2nd UE in the first UE and at least one 2nd UE Road, the first code book rope of the first SINR value of the first SINR value of preset number and preset number is broadcasted at least one 2nd UE Fuse ceases.
The embodiments of the invention provide a kind of method for transmitting data, the executive agent of this method is the first UE, the first UE For any UE in wireless communication system.Referring to Fig. 6, this method includes：
Step 301：First UE determines the first SINR set and the 2nd SINR set, and the first SINR set includes the first UE Multiple first SINR values and multiple first codebook index informations, the 2nd SINR set include at least one 2nd UE and broadcast extremely Few second SINR value and at least one second codebook index information.
In a wireless communication system, it is understood that there may be multiple UE carry out data transmission with eNB simultaneously；But eNB's is same One can only be transmitted on running time-frequency resource and assembles data to UE；Therefore, before UE and eNB carry out data transmission, eNB is to multiple UE In each UE send matched order respectively, by each UE according to the matched order, carry out pairing processing respectively, result will be matched Feed back to eNB.
For the ease of description, any UE in multiple UE is referred to as the first UE, by the UE in multiple UE in addition to the first UE Referred to as the 2nd UE.Accordingly, the first UE receives the matched order that eNB is sent, and according to the matched order, passes through following steps (1) To (2), the first SINR set and the 2nd SINR set are determined.
(1)：First UE obtains channel matrix and default codebook set, and codebook set is preset according to the channel matrix and this, Determine that the first SINR gathers.
First UE obtains channel matrix corresponding to default codebook set and the first UE from eNB, in the default codebook set Including multiple code books, and a code book includes multiple column vectors；First UE selects multiple code books from default codebook set, and Multiple column vectors are selected from multiple code books, according to the channel matrix and multiple column vectors, determine to use multiple column vectors respectively In each column vector carry out precoding when the first SINR value, so as to obtain multiple first SINR values, by each column vector First code book index of the first SINR value when codebook index information is identified as carrying out precoding using each column vector is believed Breath.
First codebook index information of the first SINR value includes code book mark corresponding to the first SINR value and column vector mark, Code book mark can be that code book is numbered, and column vector mark can be that column vector is numbered.
For example, the first SINR value is to carry out the SINR value that precoding obtains using the m row of l-th code book, then first Codebook index information corresponding to SINR value is l and m.
For each column vector, the first UE is according to the channel matrix and the column vector, it is determined that being carried out using the column vector pre- The step of the first SINR value during coding can be realized by following steps (1-1) to (1-4), including：
(1-1)：First UE determines that the first UE carries out precoding by the column vector according to the channel matrix and the column vector When useful data power.
First UE obtain it is current simultaneously and the terminal number of ENB communications, the transmission work(of the first UE transmission than the m-th data streams Total transmit power, noise power in rate, eNB, according to the channel matrix, the column vector, the terminal number, transmission m-th According to the transmit power of stream, total transmit power and the noise power, by below equation (1), determine that the first UE is sweared by the row The power of useful data during amount progress precoding.
Wherein,A is should The power of useful data, pmThe transmit power of than the m-th data stream, H are sent for the first UEkFor k-th of matrix in channel matrix,For m-th of column vector of l-th of code book, P is the general power in eNB, K be it is current simultaneously and the UE numbers that communicate of eNB, N0 are Noise power, INFor unit matrix.
(1-2)：First UE determines that the first UE carries out precoding by the column vector according to the channel matrix and the column vector When interference data power.
First UE obtains the transmit power for sending i-th of data flow, according to the channel matrix, the column vector, the number of terminals Mesh, the transmit power for sending than the m-th data stream, transmit power, total transmit power and the noise power of i-th data flow, By below equation (2), power of the first UE by interference data during column vector progress precoding is determined.
Wherein,B is should Disturb the power of data, piFor the transmit power of i-th of data flow.
(1-3)：First UE determines that the first UE carries out precoding by the column vector according to the channel matrix and the column vector When receiving terminal equilibrium after noise power.
First UE according to the channel matrix, the column vector, the terminal number, send than the m-th data stream transmit power, should Total transmit power and the noise power, by below equation (3), determine connecing when the first UE carries out precoding by the column vector Noise power after receiving end equilibrium.
Wherein,C is should Noise power.
(1-4)：First UE is according to making an uproar after the power of the useful data, the power of the interference data and the receiving terminal equilibrium Acoustical power, it is determined that the first SINR value when precoding is carried out using the column vector.
First UE is according to the noise work(after the power of the useful data, the power of the interference data and the receiving terminal equilibrium Rate, by below equation (4), it is determined that the first SINR value when precoding is carried out using the column vector.
Wherein,For the first SINR value,For the power of useful data,For The power of data is disturbed,For the noise power.
When first UE obtains the first SINR set, the first UE selects the maximum present count of SINR value from the first SINR set The first SINR value of mesh, passes through the device-to-device between each 2nd UE in the first UE and at least one 2nd UE (Device-to-Device, D2D) link, the first SINR value of the preset number and present count are broadcasted at least one 2nd UE First codebook index information of the first SINR value of mesh, and corresponding first codebook index information of a SINR value.
For each 2nd UE at least one 2nd UE, the first UE and the 2nd UE establishes D2D links, by this D2D links send broadcast message, and the broadcast message carries the first SINR value of the first SINR value of preset number and preset number The first codebook index information.
Preset number can be configured and change as needed；In embodiments of the present invention, preset number is not made to have Body limits；For example, preset number can be 2 or 5 etc..Preset number is bigger, and the performance of pairing probability more high-transmission data is higher, But the feedback resources needed are more.
For example, preset number can be 2, then the first UE selects maximum 2 first of SINR value from the first SINR set The first codebook index information in SINR value and 2 first SINR values；By the first UE with it is every at least one 2nd UE D2D links between individual 2nd UE, broadcast the first code book index letter in 2 first SINR values and 2 first SINR values Breath.
D2D is a kind of direct communication mode of device-to-device closely；First UE passes through D2D links and each second UE carries out data transmission, and can ensure the first UE data rate；Also, D2D is a kind of safe and reliable communication pattern, is compared For the similar short-range communication mode such as bluetooth and Wireless Fidelity (Wireless Fidelity, wifi), D2D communication fortune The capable frequency range in mandate, interference is controllable, therefore may provide the user with the communication service of better quality.Also, pass through D2D Link, which carries out communication, can realize instant messaging；For the D2D communication patterns for departing from eNB controls, in Base communication facility In the case of impaired, using the teaching of the invention it is possible to provide instant messaging；It can also reach preferable in the communication between devices of the indoor small range such as family Communication speed.Also, communicated by D2D links, the traditional eNB of required power ratio will save as the communication mode of relaying About more power, so as to save power.Because D2D communications can communicate D2D with the frequency spectrum resource of Multiplexing wireless communication system It is introduced into as a kind of communication mode of auxiliary in wireless communication system, can both improves the frequency spectrum resource of wireless communication system, also Cell and eNB loading condition can be reduced, reduces UE battery consumption.
(2)：First UE by the D2D links between each 2nd UE in the first UE and at least one 2nd UE receive to At least one second SINR value of few 2nd UE broadcast and at least one second codebook index information.
For each 2nd UE at least one 2nd UE, the 2nd UE is also by the above process by between the first UE The second codebook index information of the second SINR value of D2D link broadcasts preset number and preset number, second SINR value Corresponding second codebook index information；Detailed process can be：
Broadcast message is sent by the UE of D2D chains road direction the first between the first UE for each 2nd UE, the 2nd UE, The broadcast message carries the second codebook index information of the second SINR value of preset number and preset number.First UE receive this The broadcast message that two UE are sent, the second code book of the second SINR value of preset number and preset number is obtained from the broadcast message Index information.
First UE gets the second code book of the second SINR value of preset number and preset number that each 2nd UE is sent Index information, the second code book index information set of the second SINR value of a preset number that each 2nd UE is sent and preset number Gather into the 2nd SINR.
It should be noted that the number of the second SINR value of each 2nd UE broadcast can be with equal, can also be unequal； In the embodiment of the present invention, illustrated so that the number of the second SINR value of each 2nd UE broadcast is equal as an example, but it is and unlimited The number of second SINR value of fixed each UE broadcast.
For example, the 2nd UE having can broadcast second SINR value, the 2nd UE having can broadcast two the 2nd SINR Value, the 2nd UE having can broadcast three the second SINR values.
The number of second SINR value of each 2nd UE broadcast can be according to the 2nd UE channel status (Channel State Information, CSI) information is configured and changes, in embodiments of the present invention, to each 2nd UE broadcast The number of second SINR value is not especially limited.
The step can be performed the first determining module 2032a, selection as the processor 201 in the UE20 shown in Fig. 3 and Fig. 5 Module 2032g and broadcast module 2032h is realized.
Step 302：First UE gathers according to the first SINR set and the 2nd SINR, it is determined that the first object SINR value of pairing The first codebook index information, the second codebook index information and the second target UE of the second target sinr values.
This step can be realized by following steps (A) to (C), including：
(A)：First UE gathers according to the first SINR set and the 2nd SINR, it is determined that the SINR value of at least one set of pairing.
What multiple first codebook index informations and the 2nd the SINR set that the first UE includes according to the first SINR set included At least one second codebook index information, the code book of at least one set of pairing is selected from the first SINR set and the 2nd SINR set Index information；Determined from the first SINR set and the 2nd SINR set corresponding to the codebook index information of at least one set of pairing to Few one assemble to SINR value.
For at least one set pairing codebook index information in often assemble to codebook index information, this assemble to code This index information includes first codebook index information and second codebook index information, and first codebook index information Identified with second codebook index information including identical code book, different column vectors mark.
For at least one set pairing SINR value in often assemble to SINR value, this assemble to SINR value include one First SINR value and second SINR value, the first codebook index information of the first SINR value and the second code book of the second SINR value Index information be one assemble to codebook index information.
(B)：First UE is from the SINR value of at least one set pairing, one group of achievable rate maximum when selection communicates with eNB SINR value, the SINR value (namely one group of maximum SINR value of achievable rate when being communicated with eNB) of the pairing of the selection include first Target sinr values and the second target sinr values.
For at least one set pairing SINR value in often assemble to SINR value, respectively calculate by this assemble to Achievable rate when SINR value communicates with eNB, so as to obtain achievable rate corresponding to the SINR value of at least one set of pairing, from least Maximum achievable rate is selected in one achievable rate, selects the maximum achievable rate corresponding from the SINR value of at least one set pairing One group of SINR value.
For often assemble to SINR value, according to this assemble to SINR value, by below equation (5), calculate by should Assemble to SINR value communicated with eNB when achievable rate.
CMU-k-nFor achievable rate, SINRl_m(m=1,2) represent this assemble to SINR value.
(C)：First UE obtains the first object codebook index information of first object SINR value, the of the second target sinr values Second target UE of the second target sinr values of two target codebook index informations and transmission device identification.
When first UE receives the second SINR value of each 2nd UE broadcast, pair of storage device identification and the second SINR value It should be related to；Accordingly, according to the second target sinr values, obtaining the step of sending second target sinr values can be the first UE：
First UE according to the second target sinr values, obtained from SINR value and the corresponding relation of device identification send this second Second target UE of target sinr values device identification.
Second target UE device identification can be the second target UE numbering, phone number, GUID (Globally Unique Identifier, GUID) etc..
It should be noted that the first UE determines first object codebook index information, the second target codebook index information and After two target UE device identification, can directly perform in step 305 to eNB send first object codebook index information, The device identification of second target codebook index information and the second target UE, make eNB according to first object codebook index information, second The device identification of target codebook index information and the second target UE, using MU communication patterns and the first UE communication.
Further, due to also including SU communication patterns in wireless communication system, first it is determined that first object code book rope After the device identification of fuse breath, the second target codebook index information and the second target UE, the first UE can also pass through following step The first achievable rate when rapid 303 the first UE of determination is communicated using MU communication patterns with eNB, passes through the determination of following steps 304 the The second achievable rate when one UE is communicated using SU communication patterns with eNB, according to the first achievable rate and the second achievable rate, really Determine communication pattern.
In embodiments of the present invention, pairing processing is carried out by each UE respectively, each UE entered one by one without interaction center Row pairing is handled, and alleviates the burden of interaction center.Also, because the first UE is in the second SINR value progress sent with the 2nd UE When user matches, the first UE multiple first SINR values have been got, therefore in the low feedbacks of the 2nd UE (for example, the 2nd UE is only Broadcast second SINR value) in the case of, with regard to the very high power that is paired into can be reached, effectively save D2D link circuit resources.
The step can be as shown in Figure 3 UE20 in processor 201 perform the second determining module 2032b and realize.
Step 303：First UE determines that the first UE is communicated using MU according to first object SINR value and the second target sinr values The first achievable rate when pattern communicates with eNB.
In this step, the first UE can also be calculated the first UE by above formula (5) and be communicated using MU communication patterns with eNB When the first achievable rate；The first object SINR value and the second target that directly can also be calculated in obtaining step 302 First achievable rate corresponding to SINR value.
The step can be as shown in Figure 4 UE20 in processor 201 perform the 3rd determining module 2032d and realize.
Step 304：First UE determines the second reachable speed when the first UE is communicated using single user SU communication patterns with eNB Rate.
This step can be realized by following steps (1) to (3), including：
(1)：First UE obtains the 3rd SINR value when the first UE is communicated using SU communication patterns with eNB.
First UE selects column vector, according to the channel matrix and the column vector, determine the first UE using SU communication patterns and The 3rd SINR value when eNB communicates.
(2)：First UE obtains the 4th SINR value when the second target UE is communicated using SU communication patterns with eNB.
Also include the 4th SINR value when the 2nd UE is communicated using SU communication patterns with eNB in 2nd UE broadcast message； Accordingly, in this step, the first UE obtains the broadcast message that the second target UE is sent, from the second mesh according to the second target UE The 4th SINR value when the second target UE is communicated using SU communication patterns with eNB is obtained in the broadcast message that mark UE is sent.
In order to save transfer resource, can not also be carried in the 2nd UE broadcast message the 2nd UE using SU communication patterns with The 4th SINR value when eNB communicates, in this step, the first UE ask the second target UE to be communicated using SU from the second target UE The 4th SINR value when pattern communicates with eNB, detailed process can be：
First UE is sent to the second target UE obtains request, and the acquisition asks to communicate using SU for obtaining the second target UE The 4th SINR value when pattern communicates with eNB；Second target UE receives the acquisition request that the first UE is sent, and obtains the 4th SINR Value, the 4th SINR value is sent to the first UE；First UE receives the 4th SINR value that the second target UE is sent.
(3)：First UE is according to the 3rd SINR value and the 4th SINR value, when determining that the first UE is communicated using SU patterns with eNB The second achievable rate.
First UE, by below equation (6), is calculated the first UE and communicated using SU according to the 3rd SINR value and the 4th SINR value The second achievable rate when pattern communicates with eNB.
CSU-kFor the second achievable rate,Represent the 3rd SINR value and the 4th SINR value.
Further, the first UE determines whether the first achievable rate is more than the second achievable rate, if the first achievable rate Not less than the second achievable rate, it is determined that being communicated using MU communication patterns with eNB, step 305 is performed；If first up to speed Rate is less than the second achievable rate, it is determined that being communicated using SU communication patterns with eNB, performs step 306.
The step can be as shown in Figure 4 UE20 in processor 201 perform the 4th determining module 2032e and realize.
Step 305：If the first achievable rate is not less than the second achievable rate, the first UE sends first object code to eNB The device identification of this index information, the second target codebook index information and the second target UE, so that eNB is according to first object code book The device identification of index information, the second target codebook index information and the second target UE, using MU communication patterns and the first UE it Between transmit data, terminate.
First UE sends the first transmission to eNB and asked, the first transmission request at least carry first object codebook index information, The device identification of second target codebook index information and the second target UE, the first transmission request can also carry MU communication patterns Pattern identification, first object SINR value and the second target sinr values.Wherein, the pattern identification of MU communication patterns can be that MU communicates The title of pattern.
ENB receives the first transmission request that the first UE is sent, and first object code book index is obtained from the first transmission request The device identification of information, the second target codebook index information and the second target UE, according to first object codebook index information, second The device identification of target codebook index information and the second target UE, using MU communication patterns to the first UE and the second target UE simultaneously Transmitting data stream.
ENB is according to first object SINR value, the first UE of acquisition the first modulation system and the first transport block size；According to The device identification of two target sinr values and the second target UE, determine the 2nd UE the second modulation system and the second transport block size； According to the first modulation system and the first transport block size, and, the second modulation system and the second transport block size, when current Flow data is sent to the first UE in frequency resource, flow data is sent to the 2nd UE.
Further, the first transmission request can also carry the first achievable rate；ENB obtains the from the first transmission request One achievable rate, the corresponding relation of the first achievable rate and the first UE device identification is stored, in order to subsequently can according to first Up to speed, it is determined that sending the first UE of the first achievable rate device identification.
The step can be as shown in Figure 3 UE20 in processor 201 perform the first sending module 2032a and realize.
Step 306：If the first achievable rate is less than the second achievable rate, the CSI that the first UE sends the first UE to eNB believes Breath, so that eNB transmits data according to the CSI information using between SU communication patterns and the first UE.
First UE sends the second transmission to eNB and asked, and the second transmission asks at least to carry the first UE CSI information, and second Transmission request can also carry the pattern identification and the 3rd SINR value of SU communication patterns.Wherein, the pattern identification of SU communication patterns It can be the title of SU communication patterns.
ENB receives the second transmission request that the first UE is sent, and the first UE CSI information is obtained from the second transmission request, According to the 3rd SINR value, the first UE the first modulation system and the first transport block size are determined, according to the first modulation system and One transport block size, flow data is sent to the first UE on current running time-frequency resource.
Further, the second transmission request can also carry the second achievable rate；ENB obtains the from the second transmission request Two achievable rates, the corresponding relation of the second achievable rate and the first UE device identification is stored, in order to subsequently can according to second Up to speed, it is determined that sending the first UE of the second achievable rate device identification.
Further, the first achievable rate or the second achievable rate are added in achievable rate set by eNB, and each second UE determines communication pattern and sends achievable rate to eNB by the above process；ENB adds each 2nd UE achievable rates sent It is added in achievable rate set.ENB selects maximum achievable rate from achievable rate set, according to the maximum achievable rate, from Obtained in achievable rate and the corresponding relation of device identification and send the logical of UE and UE selections corresponding to the maximum achievable rate Letter pattern, communicated by the communication pattern that the UE is selected with the UE.
For example, the maximum achievable rate of eNB selections is the first achievable rate, then UE corresponding to the first achievable rate is first UE, and the communication pattern of the first UE selections is MU communication patterns, then eNB obtains the first object code book index letter that the first UE is sent The device identification of breath, the second target codebook index information and the second target UE, according to first object codebook index information, the second mesh Codebook index information and the second target UE device identification are marked, data are transmitted using between MU communication patterns and the first UE.
For another example, the maximum achievable rate of eNB selections is the second achievable rate, then UE corresponding to the second achievable rate is first UE, and the communication pattern of the first UE selections is SU communication patterns, then eNB obtains the CSI information that the first UE is sent, according to the CSI Information, data are transmitted using between SU communication patterns and the first UE.
Further, because, using Rank-2 code books, therefore, the first UE determines communication pattern in the embodiment of the present invention Afterwards, the first transmission request can also be sent to eNB simultaneously and the second transmission is asked, so as to which eNB can get the first UE's CSI information, even if all UE are matched and failed in wireless communication system, eNB can select to use SU communication patterns and the first UE Between transmit data, avoid the situation of communication failure.
Also, no matter communicated in the embodiment of the present invention using Rank-2 code books, eNB using SU communication patterns or MU Pattern, data fluxion are immovable；Therefore the first SINR value that the first UE is calculated is accurate, improves eNB handling capacity.
Also, the first UE completes more UE pairing and the screening of communication pattern in the embodiment of the present invention, so as to anti-to eNB During feedback, when it is determined that communication pattern be MU when, the first UE is only needed to eNB feedbacks first object codebook index information, the second mesh Mark codebook index information and the second target UE device identification；When it is determined that communication pattern be SU when, the first UE is only needed to eNB The first UE CSI information is fed back, so as to which uplink feedback amount is low, saves ascending resource.
It should be noted that each 2nd UE is also carried out data transmission by above procedure and eNB.
The step can be as shown in Figure 4 UE20 in processor 201 perform the second sending module 2032f and realize.
In embodiments of the present invention, the first SINR set includes the first UE multiple first SINR values, therefore, based on the One UE multiple first SINR values and the second SINR value is matched, and can improve pairing probability；Also, above-mentioned processing is based on, Pairing processing is carried out by each UE respectively, each UE is matched one by one without interaction center, shortens pairing duration, is improved Matching efficiency, and then reduce data transmission delay.
Following is apparatus of the present invention embodiment, can be used for performing the inventive method embodiment.It is real for apparatus of the present invention The details not disclosed in example is applied, refer to the inventive method embodiment.
Fig. 7 be it is provided in an embodiment of the present invention it is a kind of transmit data device block diagram, the dress of the transmission data Putting can be implemented in combination with as some or all of of user equipment by software, hardware or both.
The device includes the first determining unit 401, the second determining unit 402, the first transmitting element 403.
First determining unit 401, there is the first same or analogous functions of determining module 2032a.
Second determining unit 402, there is the second same or analogous functions of determining module 2032b.
First transmitting element 403, there is the first same or analogous functions of sending module 2032c.
Referring to Fig. 8, in a possible design, the device also includes the 3rd determining unit 404 and the 4th determining unit 405。
3rd determining unit 404, there is the 3rd same or analogous functions of determining module 2032d.
4th determining unit 405, there is the 4th same or analogous functions of determining module 2032e.
In a possible design, the device also includes the second transmitting element 406, selecting unit 407 and radio unit 408。
Second transmitting element 406, there is the second same or analogous functions of sending module 2032f.
Selecting unit 407, there is the same or analogous functions of selecting module 2032g.
Radio unit 408, there is the same or analogous functions of broadcast module 2032h.
It should be appreciated that it is used in the present context, unless context clearly supports exception, singulative " one It is individual " (" a ", " an ", " the ") be intended to also include plural form.It is to be further understood that "and/or" used herein is Referring to includes any of one or more than one project listed in association and is possible to combine.
It should be noted that：The device for the transmission data that above-described embodiment provides is when transmitting data, only with above-mentioned each work( Can module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different functions Module is completed, i.e., the internal structure of device is divided into different functional modules, described above all or part of to complete Function.In addition, the device for the transmission data that above-described embodiment provides and the embodiment of the method for transmission data belong to same design, its Specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims (27)

  1. A kind of 1. method for transmitting data, it is characterised in that methods described is applied in the first user equipment (UE), including：
    The first Signal to Interference plus Noise Ratio SINR set and the 2nd SINR set are determined, the first SINR set includes institute State the first UE multiple first SINR values and multiple first codebook index informations, the 2nd SINR set includes at least one the Two SINR values and at least one second codebook index information, at least one second SINR value and at least one second code book rope Fuse breath belongs at least one 2nd UE；
    According to the first SINR set and the 2nd SINR set, it is determined that the first object of the first object SINR value of pairing The device identification of codebook index information, the second target codebook index information of the second target sinr values and the second target UE；
    The first object codebook index information, the second target codebook index information and described second are sent to base station eNB Target UE device identification, so that the eNB is according to the first object codebook index information, the second target code book index The device identification of information and the second target UE, using multi-user MU communication patterns respectively with the first UE and described second Target UE carries out data transmission.
  2. 2. according to the method for claim 1, it is characterised in that described according to the first SINR set and described second SINR gathers, it is determined that the first object codebook index information of the first object SINR value of pairing, the second of the second target sinr values The device identification of target codebook index information and the second target UE, including：
    According to the first SINR set and the 2nd SINR set, it is determined that the SINR value of at least one set of pairing；
    From the SINR value of at least one set of pairing, when selection communicates with eNB the one of achievable rate maximum assemble to SINR Value, the first object SINR value and the second target sinr values that the SINR value of the pairing of selection includes；
    Obtain first object codebook index information, the second target of second target sinr values of the first object SINR value The device identification of codebook index information and the second target UE of transmission second target sinr values.
  3. 3. according to the method for claim 1, it is characterised in that described to send the first object code book index letter to eNB Before breath, the second target codebook index information and the second target UE, methods described also includes：
    According to the first object SINR value and second target sinr values, determine the first UE using MU communication moulds The first achievable rate when formula communicates with the eNB；
    Determine the second achievable rate when the first UE is communicated using single user SU communication patterns with the eNB；
    If first achievable rate is not less than second achievable rate, perform described to the eNB transmissions first object The step of device identification of codebook index information, the second target codebook index information and the second target UE.
  4. 4. according to the method for claim 3, it is characterised in that described to determine the first UE using single user SU communication moulds The second achievable rate when formula communicates with the eNB, including：
    The 3rd SINR value when the first UE is communicated using the SU communication patterns with the eNB is obtained, and, described in acquisition The 4th SINR value when second target UE is communicated using the SU communication patterns with the eNB；
    According to the 3rd SINR value and the 4th SINR value, determine the first UE using the SU patterns and the eNB The second achievable rate during communication.
  5. 5. according to the method for claim 3, it is characterised in that methods described also includes：
    If first achievable rate is less than second achievable rate, the channel shape of the first UE is sent to the eNB State CSI information, so that the eNB carries out data biography according to the CSI information using the SU communication patterns and the first UE It is defeated.
  6. 6. according to the method for claim 1, it is characterised in that the first SINR of the determination gathers, including：
    Multiple column vectors are selected from default codebook set；
    The channel matrix of each column vector and the first UE in the multiple column vector, determine the first UE difference The first SINR value during precoding is carried out using each column vector；
    The codebook index information of each column vector is identified as to the first of the first SINR value of each column vector Codebook index information.
  7. 7. according to the method for claim 1, it is characterised in that the 2nd SINR of the determination gathers, including：
    Connect by the device-to-device D2D links between each 2nd UE in the first UE and at least one 2nd UE Receive at least one second SINR value of at least one 2nd UE broadcast and at least one second code book index letter Breath.
  8. 8. according to the method for claim 1, it is characterised in that methods described also includes：
    SINR value the first SINR value of maximum preset number and the preset number are selected from the first SINR set First codebook index information of the first SINR value；
    By the D2D links between each 2nd UE in the first UE and at least one 2nd UE, to it is described at least One the 2nd UE broadcasts the first code book rope of the first SINR value of the first SINR value of the preset number and the preset number Fuse ceases.
  9. 9. according to the method for claim 1, it is characterised in that methods described also includes：
    The first object SINR value and second target sinr values are sent to the eNB, so that the eNB is according to described the One target sinr values and second target sinr values, it is determined that the tune with the first UE and the second target UE transmission data Mode processed.
  10. A kind of 10. device for transmitting data, it is characterised in that described device is applied in the first user equipment (UE), including：
    First determining unit, for determining the first Signal to Interference plus Noise Ratio SINR set and the 2nd SINR set, described the One SINR set includes multiple first SINR values of the first UE and multiple first codebook index informations, the 2nd SINR Set includes at least one second SINR value and at least one second codebook index information, at least one second SINR value with At least one second codebook index information belongs at least one 2nd UE；
    Second determining unit, for being gathered according to the first SINR set and the 2nd SINR, it is determined that the first mesh of pairing Mark first object codebook index information, the second target codebook index information and the second target of the second target sinr values of SINR value UE device identification；
    First transmitting element, for sending the first object codebook index information, the second target code book rope to base station eNB Fuse ceases and the device identification of the second target UE, so that the eNB is according to the first object codebook index information, described The device identification of second target codebook index information and the second target UE, using multi-user MU communication patterns respectively with it is described First UE and the second target UE carry out data transmission.
  11. 11. device according to claim 10, it is characterised in that
    Second determining unit, it is additionally operable to according to the first SINR set and the 2nd SINR set, it is determined that at least one Assemble to SINR value；From the SINR value of at least one set of pairing, one group of achievable rate maximum when selection communicates with eNB The SINR value of pairing, the first object SINR value and the second target sinr values that the SINR value of the pairing of selection includes；Described in acquisition Second target codebook index information of the first object codebook index information of first object SINR value, second target sinr values And send the second target UE of second target sinr values device identification.
  12. 12. device according to claim 10, it is characterised in that described device also includes：
    3rd determining unit, for according to the first object SINR value and second target sinr values, determining described first The first achievable rate when UE is communicated using the MU communication patterns with the eNB；
    4th determining unit, for determine the first UE using single user SU communication patterns communicated with the eNB when second Achievable rate；
    If first achievable rate is not less than second achievable rate, performs first transmitting element and be used for eNB Send the equipment mark of the first object codebook index information, the second target codebook index information and the second target UE Know.
  13. 13. device according to claim 12, it is characterised in that
    4th determining unit, it is additionally operable to obtain when the first UE is communicated using the SU communication patterns with the eNB 3rd SINR value, and, obtain the 4th SINR when the second target UE is communicated using the SU communication patterns with the eNB Value；According to the 3rd SINR value and the 4th SINR value, determine that the first UE is led to using the SU patterns with the eNB The second achievable rate during letter.
  14. 14. device according to claim 12, it is characterised in that described device also includes：
    If first achievable rate is less than second achievable rate, the second transmitting element, for sending institute to the eNB State the first UE channel status CSI information so that the eNB is according to the CSI information, using the SU communication patterns with it is described First UE carries out data transmission.
  15. 15. device according to claim 10, it is characterised in that
    First determining unit, it is additionally operable to select multiple column vectors from default codebook set；According to the multiple column vector In each column vector and the first UE channel matrix, determine that the first UE is respectively adopted each column vector and carried out The first SINR value during precoding；The codebook index information of each column vector is identified as each column vector First codebook index information of the first SINR value.
  16. 16. device according to claim 10, it is characterised in that
    First determining unit, be additionally operable to by each 2nd UE in the first UE and at least one 2nd UE it Between device-to-device D2D links receive at least one second SINR value of at least one 2nd UE broadcast and described At least one second codebook index information.
  17. 17. device according to claim 10, it is characterised in that described device also includes：
    Selecting unit, for selecting SINR value the first SINR value of maximum preset number and institute from the first SINR set State the first codebook index information of the first SINR value of preset number；
    Radio unit, for passing through the D2D chains between each 2nd UE in the first UE and at least one 2nd UE Road, the first SINR value of the first SINR value of the preset number and the preset number is broadcasted at least one 2nd UE The first codebook index information.
  18. 18. device according to claim 10, it is characterised in that
    First transmitting element, it is additionally operable to send the first object SINR value and the second target SINR to the eNB Value so that the eNB is according to the first object SINR value and second target sinr values, it is determined that with the first UE and institute State the modulation system of the second target UE transmission data.
  19. 19. a kind of user equipment (UE), it is characterised in that the UE includes：Processor and transmitter；
    The processor, for determining that the first Signal to Interference plus Noise Ratio SINR set and the 2nd SINR are gathered, described first SINR set includes multiple first SINR values of the first UE and multiple first codebook index informations, the 2nd SINR collection Conjunction includes at least one second SINR value and at least one second codebook index information, at least one second SINR value and extremely Few second codebook index information belongs at least one 2nd UE；
    The processor, it is additionally operable to according to the first SINR set and the 2nd SINR set, it is determined that the first mesh of pairing Mark first object codebook index information, the second target codebook index information and the second target of the second target sinr values of SINR value UE device identification；
    The transmitter, for sending the first object codebook index information, the second target code book index to base station eNB The device identification of information and the second target UE, so that the eNB is according to the first object codebook index information, described The device identification of two target codebook index informations and the second target UE, using multi-user MU communication patterns respectively with described One UE and the second target UE carry out data transmission.
  20. 20. UE according to claim 19, it is characterised in that
    The processor, it is additionally operable to according to the first SINR set and the 2nd SINR set, it is determined that at least one set of pairing SINR value；From the SINR value of at least one set of pairing, when selection communicates with eNB the one of achievable rate maximum assemble to SINR value, the first object SINR value and the second target sinr values that the SINR value of the pairing of selection includes；Obtain first mesh Mark first object codebook index information, the second target codebook index information and hair of second target sinr values of SINR value Send the second target UE of second target sinr values device identification.
  21. 21. UE according to claim 19, it is characterised in that
    The processor, it is additionally operable to, according to the first object SINR value and second target sinr values, determine described first The first achievable rate when UE is communicated using the MU communication patterns with the eNB；
    The processor, it is additionally operable to determine second when the first UE is communicated using single user SU communication patterns with the eNB Achievable rate；
    If first achievable rate is not less than second achievable rate, performs the processor and be used to send institute to eNB State the device identification of first object codebook index information, the second target codebook index information and the second target UE.
  22. 22. UE according to claim 21, it is characterised in that
    The processor, it is additionally operable to obtain the 3rd when the first UE is communicated using the SU communication patterns with the eNB SINR value, and, obtain the 4th SINR value when the second target UE is communicated using the SU communication patterns with the eNB； According to the 3rd SINR value and the 4th SINR value, determine that the first UE is communicated using the SU patterns with the eNB When the second achievable rate.
  23. 23. UE according to claim 21, it is characterised in that the UE also includes：
    If first achievable rate is less than second achievable rate, the transmitter, it is additionally operable to send institute to the eNB State the first UE channel status CSI information so that the eNB is according to the CSI information, using the SU communication patterns with it is described First UE carries out data transmission.
  24. 24. UE according to claim 19, it is characterised in that
    The processor, it is additionally operable to select multiple column vectors from default codebook set；It is every in the multiple column vector The channel matrix of individual column vector and the first UE, determine that the first UE is respectively adopted each column vector and carries out precoding When the first SINR value；The codebook index information of each column vector is identified as the first of each column vector First codebook index information of SINR value.
  25. 25. UE according to claim 19, it is characterised in that the UE also includes receiver；
    The receiver, for passing through the equipment between each 2nd UE in the first UE and at least one 2nd UE At least one second SINR value of at least one 2nd UE broadcast and described at least one is received to equipment D2D links Second codebook index information.
  26. 26. UE according to claim 19, it is characterised in that the UE also includes：
    The processor, it is additionally operable to select SINR value the first SINR value of maximum preset number in from the first SINR gathering With the first codebook index information of the first SINR value of the preset number；
    The transmitter, it is additionally operable to by between each 2nd UE in the first UE and at least one 2nd UE D2D links, the first SINR value of the preset number and the preset number first are broadcasted at least one 2nd UE First codebook index information of SINR value.
  27. 27. UE according to claim 19, it is characterised in that
    The transmitter, it is additionally operable to send the first object SINR value and second target sinr values to the eNB, so that The eNB according to the first object SINR value and second target sinr values, it is determined that with the first UE and described second Target UE transmits the modulation system of data.
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