CN107294570A

CN107294570A - The processing method and processing device of channel information

Info

Publication number: CN107294570A
Application number: CN201610200919.4A
Authority: CN
Inventors: 肖华华; 鲁照华; 陈艺戬; 李儒岳; 吴昊; 蔡剑兴; 王瑜新; 李永
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-24
Also published as: WO2017167157A1

Abstract

The invention provides a kind of processing method and processing device of channel information, wherein, methods described includes：The code word included in code book is divided into M code word group by terminal, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M 1；The terminal is according to channel information from the N number of code word group of the M code word group selection, and feed back the configured information of the codewords indexes for the code word that group index or N number of code word group comprising N number of code word group are included, solve in correlation technique, it is general in MIMO technology only to feed back a code word, with the increase of number of antennas, the problem of systematic function declines can be caused, systematic function is improved, the robustness of system is added.

Description

The processing method and processing device of channel information

Technical field

The present invention relates to the communications field, in particular to a kind of processing method and processing device of channel information.

Background technology

In wireless communication system, transmitting terminal and receiving terminal typically can obtain higher speed using adopting many antennas and sending and receiving. One principle of multiple-input and multiple-output (multiple-input-multiple-output, referred to as MIMO) technology utilizes channel Some features form the multilayer transmission of match channels feature, so as to effective lifting system performance, do not increase bandwidth and Significant performance boost is just obtained on the basis of power, is a very promising technology, the extensive use in current system. Such as in Long Term Evolution (Long Term Evolution, referred to as LTE) and its enhancing version Long Term Evolution-Advanced, referred to as LTE A) there is pattern transmission mode 2~transmission mould of a variety of multi-antenna technologies transmission in system Formula 10.The concept and technology being related in multi-antenna technology all compare many, and present disclosure is described in order to help to understand and be easy to, The concept of some key technologies is explained below.

Two kinds of feedback systems of CSI (ascending control channel Physical Uplink Control Channel, referred to as PUCCH) and thing Manage Uplink Shared Channel Physical uplink shared channel, referred to as PUSCH)

Terminal CSI feedback is primarily present two ways：Base station can be measured and be quantified to channel information with configurating terminal, and By PUCCH to channel condition information (Channel State Information, referred to as CSI) information of quantization (including order Designator (Rank Indicator, referred to as RI)/precoding matrix indicators (Precoding Matrix Indicator, referred to as PMI)/channel quality indication (CQI) information (Channel quality indication, referred to as CQI) is periodically fed back.Base station Can also when needed, acyclic unexpected triggering terminal carries out reporting for CSI information (including RI/PMI/CQI), and it leads Will be in PUSCH.To overcome periodic feedback real-time not high enough, the problem of CSI quantified precisions are limited to control channel expense.

Feed back classification：

The measurement of channel information and the classification of feedback have two kinds：Respectively information feedback type A (Class A) and letter Channel state information feedback kind B (Class B)

Class A：Base station sends CSI-RS, generally non-precoded pilot tone, and UE directly carries out channel measurement based on the CSI-RS And CSI quantifies, and obtains RI/PMI/CQI.These contents are fed back on PUCCH or PUSCH, feedback content is more, Include the beam direction in broadband

Class B：The CSI-RS that base station is sent, generally precoded pilot, UE may need first to carry out the choosing of precoded pilot Select, or the resource set of precoded pilot are selected, or port group selection, then the subset based on selection carries out channel information again Quantization feedback, including subset selection information, and selection the corresponding RI/PMI/CQI information of CSI-RS measurement subset of resources.

The introduction of open loop MIMO and closed-loop MIMO：

, it is necessary to user feedback PMI multi-antenna technology, referred to as closed-loop MIMO in the corresponding multi-antenna technology of these transmission modes Technology, it is not necessary to feed back PMI multi-antenna technology, referred to as open loop MIMO techniques.Open loop MIMO is generally used for user's movement Than in faster scene, because channel condition information or variations are too fast in this scene, so that feedback Precoding information can not react channel condition information in time, so as to cause declining to a great extent for performance.LTE/LTE A earlier version Such as Release 8/Release 9 are used based on cell common reference signal (Cell-specific Reference Signal, CRS) Open loop MIMO, it is realized using TM3, as the sending port that base station is configured is more and more, supports more multiport Open loop MIMO techniques are also required to be supported, and in LTE/LTE A release 10 and later version, define transmission Pattern 9 and transmission mode 10, it can be done based on demodulation reference pilot tone (Demodulation Reference Signal, DMRS) Open loop MIMO.

In existing open loop MIMO techniques, PMI need not be fed back, because the PMI of feedback can not reflect quick change Channel.And with vertical beam figuration Elevation Beamforming (E-BF), MIMO (Full Dimension are tieed up entirely MIMO, FD MIMO) appearance, W1 code word is also set to the DFT and dimension 2 of dimension 1 by code word in R13 DFT kroneck products.Even and if can be seen that user from Fig. 1 and Fig. 2 and leave the speed of base station quickly, but vertical direction Angle change is slow, such as user is from from base station 50m to 150m, and angle change only has about 5 °, i.e., one user is Make to move with 360km/h, be required for the time of 1 second, and it is 0.005 second that the cycle of user feedback is most short, it can thus be seen that Vertical dimensions change is very slow.The property of system can not be effectively improved by not feeding back any PMI open loop MIMO mode at present Energy.

In existing MIMO technology, 1 code word W is typically once only fed back, with the increase of number of antennas, a code word The wave beam that W is represented is more and more narrow, so that the region of covering is also smaller, user shift position may will result in the larger of performance Decline, that is to say, that robustness is not so good.

It is general in MIMO technology only to feed back a code word in correlation technique, with the increase of number of antennas, can cause be The problem of system hydraulic performance decline, not yet propose effective solution.

The content of the invention

In order to solve the above-mentioned technical problem, the invention provides a kind of feedback of channel information, processing method and processing device.

According to an aspect of the invention, there is provided a kind of feedback method of channel information, including：Terminal will be included in code book Code word is divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, M=0,1 ... ..., M-1；The terminal is included according to channel information from the N number of code word group of the M code word group selection, and feedback The configured information of the codewords indexes for the code word that the group index of N number of code word group or N number of code word group are included, wherein, N For the positive integer less than M.

Preferably, methods described also includes：

The terminal determines code word packet parameters by the high-level signaling of reception；Or

The terminal determines code word packet parameters by the physical layer signaling of reception；Or

The terminal determines code word packet parameters.

Preferably, the terminal determines code word packet parameters by one of at least following parameter：

First dimension port number N₁And/or the second dimension port number N₂；Codebook subset option and installment；First dimension oversample factor O₁ And/or the second dimension oversample factor O₂；The order of channel；Transmission mode；Pre-coding matrix instruction PMI enable instructions, order Designator RI enable instructions；Channel condition information CSI feedback model；CSI feedback classification.

Preferably, the code word packet parameters include：

Code word group number M value, the code word number K of each code word group_mValue, the packet mode of code word group.

Preferably, the code word number K of the M code word group_mK is equal to, wherein, K is the positive integer more than 1.

Preferably, the code word number K of the M code word group_m=a_m×K_m-1, wherein, a_mFor positive integer.

Preferably, the packet mode of the code word group, at least including one below:

According to the index i of the first code book₁The code word of described code book group is divided into M code word group；

According to the index i of first the first dimension of code book₁₁The code word of described code book group is divided into M code word group；

According to the index i of first the second dimension of code book₁₂The code word of described code book group is divided into M code word group；

According to the second code book index i₂The code word of described code book group is divided into M code word group.

Preferably, the packet mode of the code word group, including：

By the first code book W₁Index i₁It is divided into L₁Individual set C_1k, the second code book W₂Codewords indexes i₂It is divided into L₃Individual set C_3m, group index is j=k × L₃The codeword set of+m code word group is index set { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all Code word, the code word group number is M=L₁×L_3,The code word number is K_j=K_1k×K_3m, wherein, C_1kBe set 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIt is individual Element, K_j, K_1k, K_3mAll it is positive integer, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₃For M₁Approximate number, N₁₁And M₁Respectively the first code book index i₁Number and the second code book index i₂ Number；And/or

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂ It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n×L₃+m Code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, the code word group Number M=L₁×L₂×L_3,The code word number of each code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1kBe set 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂- 1 } a subset, C_2nThere is K_2n Individual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_2n, K_3mAll it is Positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂ Approximate number, L₃For M₁Approximate number, N_11,N₁₂And M₁Respectively first the first dimension of code book index index i₁₁Number, first yard This second dimension index index i₁₂Number and the second code book index i₂Number.

Preferably, methods described also includes：

As the L₁=N₁₁, the L₃When=1, code book is divided into M code word group includes：I₁Identical but i₂Different is all M₁Individual code word is divided into L₂Group, the M=N₁₁, each code word group has K=M₁Individual code word, i₂=0 ..., M₁- 1, L₂For M₁One Individual approximate number；Or,

As the L₁<N₁₁, the L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×M₁Individual code word is pressed i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₂Group, it is described M=L_1×L_2,It is describedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁Approximate number and more than 1, L₂For M₁An approximate number；Or,

As the L₁=N₁₁, the L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×N₁₂×M₁Individual code Word presses i₁₁It is divided into N₁₁Group, for any one i₁₁Corresponding code word group, then by i₁₂And/or i₂It is divided into L₂Group, every group of code word is come From identical i₁₁, but at least i₁₂And/or i₂Different code word compositions, the M=N₁₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₂Value be N₁₂×M₁An approximate number；Or,

As the L₁<N₁₁, the L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁It is divided into L₁Group, then by i₁₂With/ Or i₂L₁Group code word is divided into L₂Group, every group of code word is from least two different i₁₁The i different with least two₁₂And/or i₂'s Code word is constituted, the M=L₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁- 1, L₁Value be N₁₁Be more than 1 approximate number, L₂Value be N₁₂×M₁An approximate number；Or,

As the L₂=N₁₂, the L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into N₁₂Group, by i₁₁And/or i₂N₁₂Group code word is divided into L₃Group, every group of code word is from 1 i₁₂, the i different with least two₁₁And/or i₂Code word composition, The M=N₁₂×L₃,i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₃For N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into L₁Group, by i₁₁And/or i₂L₁Group code word is divided into L₂Group, every group Code word is from least two different i₁₂, the i different with least two₁₁And/or i₂Code word composition, the M=L₁×L₂, K=i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₂Pact Count and more than 1, L₂Value be N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁And i₁₂It is divided into L₁Group, by i₂L₁Group code word is divided into L₂Group, every group of code Word is from least two different i₁₁And/or i₁₂, and at least two difference i₂Code word composition, the M=L₁×L₂, i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, C₁Value be N₁₁ ×N₁₂The approximate number for being more than 1, K value is M₁An approximate number.

Preferably, the group index of the terminal feedback N number of code word group includes：Feed back described corresponding group of rope of N number of code word group Draw j, wherein j=0 ..., M-1.

Preferably, the terminal feeds back the codewords indexes that N number of code word group includes code word, including：

The terminal feeds back at least one i₁All or part of bit；Or

The terminal feeds back at least one i₁All or part of bit and at least one i₂All or part of bit；Or

The terminal feeds back at least one i₁₁All or part of bit and/or i₁₂All or part of bit；Or

The terminal feeds back at least one i₁₁All or part of bit and/or i₁₂All or part of bit, and feed back at least one i₂All or part of bit.

Preferably, the i₁For the first code book W₁Codewords indexes, the i₁₁For the first code book W₁First dimension codewords indexes, institute State i₁₂For the first code book W₁Second dimension codewords indexes, described i₂Second code book W₂Codewords indexes, wherein, i₁=0 ..., N₁₁- 1, i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁-1。

Preferably, the i₁For index group C_1kGroup index；The i₁₁For index group C_1kGroup index；The i₁₂For index Group C_2nGroup index；The i₂For index group C_3kGroup index, wherein, i₁=0 ..., L₁- 1, i₁₁=0 ..., L₁- 1, i₁₂=0 ..., L₂- 1, i₂=0 ..., L₃-1。

Preferably, the terminal determines code word packet parameters, and the terminal determines code word packet parameters according to channel condition information, And feedback code packet signaling.

According to another aspect of the present invention, a kind of feedback method of channel information is additionally provided, including：Terminal will be wrapped in code book The code word contained is divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor more than 1 Integer, m=0,1 ... ..., M；The terminal selects N number of code word group according to channel information from the M code word group, and Code word in N number of code word group determines channel quality information CQI, and feeds back the CQI determined, wherein, N is small In M positive integer.

Preferably, code word of the terminal in N number of code word group determines channel quality information CQI, including it is following at least One of：

The terminal utilizes each code word W of N number of code word group of the selection_kAnd W_kEach physics money on the subband acted on Channel matrix in source block, determines the letter on each Physical Resource Block on the subband that each code word of streams of code words 1 and code word are acted on On each Physical Resource Block on the channel quality of road matrix, and the subband that each code word of the streams of code words 1 and code word are acted on The channel quality of channel matrix be merged into a CQI₁, wherein, k=0 ..., K_t-1,K_t,For the code word number of N number of code word group；

The terminal is merged into a code word W using the code word of each code word group of N number of code word group of the selection_kAnd W_kMade The channel matrix on each Physical Resource Block on subband, is determined on the subband that each code word of streams of code words 1 and code word are acted on Each Physical Resource Block on channel matrix channel quality, and the son that each code word of the streams of code words 1 and code word are acted on The channel quality of the channel matrix on each Physical Resource Block taken is merged into a CQI_1,Wherein, k=0 ... ..., N-1；

The terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’Institute The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 1 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of the streams of code words 1 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_1,Wherein, k=0 ... ..., K ' -1, K For the code word number of the code word group of the selection, K ' is the code word number after merging, and N is positive integer；

The terminal utilizes a code word W of N number of code word group of the selection_kAnd W_kPhysics money on the subband acted on Channel matrix H in source block_j, determine code word W described in streams of code words 1_kOn the Physical Resource Block on the subband acted on code word Channel matrix H_jChannel quality, and by code word W described in the streams of code words 1_kThe thing on the subband acted on code word Manage the channel matrix H on resource block_jChannel quality be merged into a CQI₁, wherein, k=1 ..., K_t-1,K_t,For N number of code word group Code word number, j=0,1 ... ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, and N_PRBFor positive integer.

Preferably, the terminal determines channel quality information CQI according to the code word in the code word group of selection, including it is following at least it One：

The terminal utilizes each physics on the subband that each code word W k and Wk of N number of code word group of the selection is acted on Channel matrix on resource block, is determined on each Physical Resource Block on the subband that each code word of streams of code words 2 and code word are acted on Each Physical Resource Block on the channel quality of channel matrix, and the subband that each code word of the streams of code words 2 and code word are acted on On the channel quality of channel matrix be merged into a CQI₂, wherein, k=0 ..., K_t-1,K_t,For the code word number of N number of code word group；

The terminal is merged into a code word W k and Wk institute using the code word of each code word group of N number of code word group of the selection The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 2 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of the streams of code words 2 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_2,Wherein, k=0 ..., N-1；

The terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’Institute The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 2 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of the streams of code words 2 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_2,Wherein, k=0 ..., K ' -1, K are The code word number of the code word group of the selection, K ' is the code word number after merging, and N is positive integer；

The terminal utilizes a code word W of N number of code word group of the selection_kAnd W_kPhysics money on the subband acted on Channel matrix H in source block_j, determine code word W described in streams of code words 2_kOn the Physical Resource Block on the subband acted on code word Channel matrix H_jChannel quality, and by code word W described in the streams of code words 2_kThe thing on the subband acted on code word Manage the channel matrix H on resource block_jChannel quality be merged into a CQI₁, wherein, k=0 ..., K_t-1,K_t,For N number of code word group Code word number, j=0 ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, N_PRBFor positive integer.

Preferably, by K code word linear combining of each code word group into the individual code word Ws of K '_k’Including：By i in K code word₂ It is identical, i₁Different code words does linear combining and obtains W_k’, or by i₂It is identical, i₁₁Or i₁₂Different code words is done linear combining and obtained W_k’, or by i₂Or i₁₂At least one is identical, but i₁₁Different code words does the code word W after linear combining is merged_k’, or By i₂Or i₁₁At least one is identical, but i₁₂Different code words does the code word W after linear combining is merged_k’, k '=1 ..., K ', its In, K is the code word number of the code word group of the selection, and K ' is the code word number after merging.

According to another aspect of the present invention, a kind of processing method of channel information is additionally provided, including：Base station will be wrapped in code book The code word contained is divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, m to be less than or Positive integer equal to M, K_mFor the integer more than 1；The group index for N number of code word group that the base station is fed back according to terminal or institute State K in N number of code word group_mThe codewords indexes of individual code word, or, the base station itself determine N number of code word group group index or should The codewords indexes of code word obtain the code word of N number of code word group from the M code word group in code word group, wherein, N number of code word Group is selected from the M code word group, and N is the positive integer less than M；Precoding information is sent according to the obtained code word.

Preferably, methods described also includes：The base station determines code word packet parameters, wherein, the base station passes through at least following One of parameter determines code word packet parameters：

Preferably, methods described also includes：The code word packet signaling of base station receiving terminal feedback, and letter is grouped according to the code word Order determines that code word packet parameters, or base station determine the code word packet parameters.

Preferably, the code word packet parameters include：

The number M of code word group value, the code word number K of each code word group_mValue and code book be divided into the packet side of code word group Formula.

Preferably, the packet mode of code word group, at least including one below：

According to the second code book index i₁₂The code word of described code book group is divided into M code word group.

Preferably, code book is divided into M code word group by base station, at least including one below：

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂ It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n×L₃+m Code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, the code word group Number M=L₁×L₂×L_3,The code word number of the code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1kBe set 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂- 1 } a subset, C_2nThere is K_2n Individual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_2n, K_3mAll it is Positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂ Approximate number, L₃For M₁Approximate number, N_11,N₁₂And M₁Respectively first the first dimension of code book index index i₁₁Number, first yard This second dimension index index i₁₂Number and the second code book index i₂Number.

Preferably, methods described also includes：

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into L₁Group, by i₁₁And/or i₂L₁Group code word is divided into L₂Group, every group Code word is from least two different i₁₂, the i different with least two₁₁And/or i₂Code word composition, the M=L₁×L₂, i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₂Pact Count and more than 1, L₂Value be N₁₁×M₁An approximate number；Or,

Preferably, the base station receives N number of code word group codewords indexes of terminal feedback, including：

The base station receives terminal at least one i₁All or part of bit；Or

The base station receives at least one i of terminal feedback₁All or part of bit and at least one i₂All or part of bit；Or

The base station receives at least one i of terminal feedback₁₁All or part of bit and/or i₁₂All or part of bit；Or

The base station receives at least one i of terminal feedback₁₁All or part of bit and/or i₁₂All or part of bit, and Feed back at least one i₂All or part of bit.

Preferably, the i₁For the first code book W₁Codewords indexes, the i₁₁For the first code book W₁First dimension codewords indexes, institute State i₁₂For the first code book W₁Second dimension codewords indexes, the i₂Second code book W₂Codewords indexes, wherein, i₁=0 ..., N₁₁- 1, i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁-1。

Preferably, the base station receives the group index of N number of code word group of terminal feedback, including：Receive N number of code Word group corresponding group index j, wherein j=0,1 ... ..., M-1.

Preferably, the precoding information includes at least one of：The data message of precoding, the frequency information for leading precoding, The enhancing downlink control channel information of precoding.

According to another aspect of the present invention, a kind of feedback method of channel information is additionally provided, including：Base station receiving terminal is anti- The CQI of feedback, and the modulating-coding grade that data are sent is determined according to the CQI, wherein, wherein, the CQI is according to institute The code word stated in N number of code word group that terminal is selected from M code word group determines channel quality information CQI, wherein, N be less than M positive integer, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0, 1……,M。

Preferably, methods described also includes：The base station determines channel quality information CQI according to the code word, and according to described CQI determines the modulating-coding grade that data are sent.

According to another aspect of the present invention, a kind of feedback device of channel information is additionally provided, applied to terminal, including：

First division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=1 ... ..., M-1；

First choice module, for according to channel information from the N number of code word group of the M code word group selection, wherein, N be less than M positive integer；

First feedback module, for feeding back the code that group index or N number of code word group comprising N number of code word group are included The configured information of the codewords indexes of word.

Second division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M；

Second selecting module, for selecting N number of code word group from the M code word group according to channel information；

First determining module, determines channel quality information CQI, and feed back determination for the code word in N number of code word group The CQI gone out, wherein, N is the positive integer less than M；

Second feedback module, for feeding back the CQI determined.

According to another aspect of the present invention, a kind of processing unit of channel information is additionally provided, applied to base station, including：

3rd division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, and m is the positive integer less than or equal to M, K_mFor the integer more than 1；

Second determining module, for K in the group index of N number of code word group fed back according to terminal or N number of code word group_mIndividual code The codewords indexes of word, or, the code word rope of code word in the group index or the code word group of N number of code word group that the base station itself is determined Draw the code word that N number of code word group is obtained from the M code word group, wherein, N number of code word group is selected from the M code word group, N is the positive integer less than M；

Sending module, for sending precoding information according to the obtained code word.

According to another aspect of the present invention, a kind of processing unit of channel information is additionally provided, including：

Second receiving module, the CQI fed back for receiving terminal；

3rd determining module, for determining the modulating-coding grade that data are sent according to the CQI, wherein, the CQI is root Code word in the N number of code word group selected according to the terminal from M code word group determines channel quality information CQI, wherein, N is Positive integer less than M, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, M=0,1 ..., M.

By the embodiment of the present invention, the code word included in code book is divided into M code word group, and then according to channel information from the M The individual N number of code word group of code word group selection, and feed back comprising N number of code word group group index or N number of code word group included Code word codewords indexes configured information, wherein m-th code word group includes K_mIndividual code word, M is positive integer, K_mFor more than 1 Integer, m is the positive integer less than or equal to M-1；N is the positive integer less than M.Using above-mentioned technical proposal, correlation is solved It is general in MIMO technology only to feed back a code word in technology, with the increase of number of antennas, systematic function can be caused to decline Problem, improves systematic function, adds the robustness of system.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, of the invention shows Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the angle of pitch schematic diagram under user's spacing different from base station in correlation technique；

Fig. 2 is the pitching angular dependence under user's spacing different from base station in city microenvironment in correlation technique；

Fig. 3 is the flow chart (one) of the feedback method of the channel information according to the embodiment of the present invention；

Fig. 4 is the flow chart (two) of the feedback method of the channel information according to the embodiment of the present invention；

Fig. 5 is the flow chart (three) of the feedback method of the channel information according to the embodiment of the present invention；

Fig. 6 is the flow chart (four) of the feedback method of the channel information according to the embodiment of the present invention；

Fig. 7 is the structured flowchart (one) of the feedback device of the channel information according to the embodiment of the present invention；

Fig. 8 is the structured flowchart (two) of the feedback device of the channel information according to the embodiment of the present invention；

Fig. 9 is the structured flowchart (three) of the feedback device of the channel information according to the embodiment of the present invention；

Figure 10 is the structured flowchart (four) of the feedback device of the channel information according to the embodiment of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting, The feature in embodiment and embodiment in the application can be mutually combined.

Other features and advantages of the present invention will be illustrated in the following description, also, partly become from specification it is aobvious and It is clear to, or is understood by implementing the present invention.The purpose of the present invention and other advantages can be by the specifications, right write Specifically noted structure is realized and obtained in claim and accompanying drawing.

In order that those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention The embodiment of a part, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having There is the every other embodiment made and obtained under the premise of creative work, should all belong to the scope of protection of the invention.

It should be noted that in the follow-up described all schemes of the embodiment of the present invention, in the present invention, base station includes but not limited In：The various Wireless Telecom Equipments such as macro base station, micro-base station, WAP.Terminal includes but is not limited to：Data card, mobile phone, The various receiving devices such as notebook computer, PC, tablet personal computer, personal digital assistant, bluetooth；The approximate number of one integer It is about number concept mathematically, refers to the integer of the normal integer of energy, such as 16 approximate number includes 1,2,4,8,16；12 approximate number Including 1,2,3,4,6,12.

In embodiments of the present invention, a kind of feedback method of channel information is additionally provided, Fig. 3 is the letter according to the embodiment of the present invention The flow chart (one) of the feedback method of road information, as shown in figure 3, comprising the following steps：

The code word included in code book is divided into M code word group by step S302, terminal, wherein, m-th of code word group includes K_mIndividual code Word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M-1；

Step S304, terminal from the N number of code word group of M code word group selection, and is fed back comprising N number of code word group according to channel information The configured information of the codewords indexes for the code word that group index or above-mentioned N number of code word group are included, N is the positive integer less than M.

By each above-mentioned step, the code word included in code book is divided into M code word group by terminal, and then according to channel information from upper The N number of code word group of M code word group selection is stated, and feeds back the group index comprising above-mentioned N number of code word group or above-mentioned N number of code word group institute Comprising code word codewords indexes configured information, wherein m-th code word group includes K_mIndividual code word, M is positive integer, K_mFor more than 1 integer, m is the positive integer less than or equal to M-1；N is the positive integer less than M.Using above-mentioned technical proposal, solve It is general in MIMO technology only to feed back a code word in correlation technique, with the increase of number of antennas, it can cause under systematic function The problem of drop, systematic function is improved, add the robustness of system.

Preferably, the above method also includes：Above-mentioned terminal determines code word packet parameters by the high-level signaling of reception；Or above-mentioned end Hold and code word packet parameters are determined by the physical layer signaling received；Or above-mentioned terminal determines code word packet parameters.

Preferably, above-mentioned terminal determines code word packet parameters by one of at least following parameter：First dimension port number N₁And/or the Two-dimentional port number N₂；Codebook subset option and installment；First dimension oversample factor O₁And/or the second dimension oversample factor O₂； The order of channel；Transmission mode；Pre-coding matrix instruction PMI enable instructions, order designator RI enable instructions；Channel Status information CSI feedback model；CSI feedback classification.

Preferably, above-mentioned code word packet parameters include：Code word group number M value, the code word number K of each code word group_mTake Value, the packet mode of M code word group.

Preferably, the code word number K of above-mentioned M code word group_mK is equal to, wherein, K is the positive integer more than 1.

Preferably, the code word number K of above-mentioned M code word group_m=a_m×K_m-1, wherein, a_mFor positive integer.

Preferably, the packet mode of code word group, at least including one below:According to the index i of the first code book₁By above-mentioned code book group Code word be divided into M code word group；According to the index i of first the first dimension of code book₁₁The code word of above-mentioned code book group is divided into M Code word group；According to the index i of first the second dimension of code book₁₂The code word of above-mentioned code book group is divided into M code word group；According to second Code book index i₁₂The code word of above-mentioned code book group is divided into M code word group.

Preferably, the packet mode of code word group, including：By the first code book W₁Index i₁It is divided into L₁Individual set C_1k, second Code book W₂Codewords indexes i₂It is divided into L₃Individual set C_3m, group index is j=k × L₃The codeword set of+m code word group is indexed set Close { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all code words, above-mentioned code word group number is M=L₁×L_3,Above-mentioned code word number is K_j= K_1k×K_3m, wherein, C_1kIt is set { 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_3mBe 0, 1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_3mAll it is positive integer, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₃For M₁Approximate number, N₁₁And M₁Respectively One code book index i₁Number and the second code book index i₂Number；And/or

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂ It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n×L₃+m Code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, above-mentioned code word group Number M=L₁×L₂×L_3,The code word number of above-mentioned each code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1kBe set 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂- 1 } a subset, C_2nThere is K_2n Individual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_2n, K_3mAll it is Positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂ Approximate number, L₃For M₁Approximate number, N_11,N₁₂And M₁Respectively first the first dimension of code book index index i₁₁Number, first yard This second dimension index index i₁₂Number and the second code book index i₂Number.

Preferably, the above method also includes：As above-mentioned L₁=N₁₁, above-mentioned L₃When=1, code book is divided into M code word group includes： I₁Identical but i₂Different all M₁Individual code word is divided into L₂Group, above-mentioned M=N₁₁, each code word group has K=M₁Individual code word, i₂=0 ..., M₁- 1, L₂For M₁An approximate number；Or, as above-mentioned L₁<N₁₁, above-mentioned L₃>When 0, code book is divided into M code word Group includes：By the N of code book₁₁×M₁Individual code word presses i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₂Group, above-mentioned M=L_1×L_2,It is above-mentionedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁Approximate number and more than 1, L₂For M₁An approximate number；Or, as above-mentioned L₁=N₁₁, it is above-mentioned L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁It is divided into N₁₁Group, for Any one i₁₁Corresponding code word group, then by i₁₂And/or i₂It is divided into L₂Group, every group of code word comes from identical i₁₁, but at least i₁₂With/ Or i₂Different code word compositions, above-mentioned M=N₁₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₂Value be N₁₂×M₁An approximate number；Or,

As above-mentioned L₁<N₁₁, above-mentioned L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁It is divided into L₁Group, then by i₁₂With/ Or i₂L₁Group code word is divided into L₂Group, every group of code word is from least two different i₁₁The i different with least two₁₂And/or i₂'s Code word is constituted, above-mentioned M=L₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁- 1, L₁Value be N₁₁Be more than 1 approximate number, L₂Value be N₁₂×M₁An approximate number；Or,

As above-mentioned L₂=N₁₂, above-mentioned L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into N₁₂Group, by i₁₁And/or i₂N₁₂Group code word is divided into L₃Group, every group of code word is from 1 i₁₂, the i different with least two₁₁And/or i₂Code word composition, Above-mentioned M=N₁₂×L₃,i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₃For N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into L₁Group, by i₁₁And/or i₂L₁Group code word is divided into L₂Group, every group Code word is from least two different i₁₂, the i different with least two₁₁And/or i₂Code word composition, above-mentioned M=L₁×L₂, i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₂Pact Count and more than 1, L₂Value be N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁And i₁₂It is divided into L₁Group, by i₂L₁Group code word is divided into L₂Group, every group of code Word is from least two different i₁₁And/or i₁₂, and at least two difference i₂Code word composition, above-mentioned M=L₁×L₂, i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, C₁Value be N₁₁ ×N₁₂The approximate number for being more than 1, K value is M₁An approximate number.

Preferably, the group index of the above-mentioned N number of code word group of above-mentioned terminal feedback includes：Feed back above-mentioned corresponding group of rope of N number of code word group Draw j, wherein j=0 ..., M-1.

Preferably, above-mentioned terminal feeds back the codewords indexes that above-mentioned N number of code word group includes code word, including：Above-mentioned terminal feedback is at least One i₁All or part of bit；Or above-mentioned terminal feeds back at least one i₁All or part of bit and at least one i₂It is all or part of bit；Or above-mentioned terminal feeds back at least one i₁₁All or part of bit and/or i₁₂All or part of bit；Or above-mentioned terminal feedback At least one i₁₁All or part of bit and/or i₁₂All or part of bit, and feed back at least one i₂All or part of bit.

Preferably, above-mentioned i₁For the first code book W₁Codewords indexes, above-mentioned i₁₁For the first code book W₁First dimension codewords indexes, on State i₁₂For the first code book W₁Second dimension codewords indexes, above-mentioned i₂Second code book W₂Codewords indexes, wherein, i₁=0 ..., N₁₁- 1, i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁-1。

Preferably, above-mentioned i₁For index group C_1kGroup index；Above-mentioned i₁₁For index group C_1kGroup index；Above-mentioned i₁₂For index Group C_2nGroup index；Above-mentioned i₂For index group C_3kGroup index, wherein, i₁=0 ..., L₁- 1, i₁₁=0 ..., L₁- 1, i₁₂=0 ..., L₂- 1, i₂=0 ..., L₃-1。

In embodiments of the present invention, a kind of feedback method of channel information is additionally provided, Fig. 4 is the letter according to the embodiment of the present invention The flow chart (two) of the feedback method of road information, as shown in figure 4, comprising the following steps：

Step 402, the code word included in code book is divided into M code word group by terminal, wherein, m-th of code word group includes K_mIndividual code Word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M；

Step 404, above-mentioned terminal selects N number of code word group according to channel information from above-mentioned M code word group, and according to above-mentioned N Code word in individual code word group determines CQI, and feeds back the CQI determined, wherein, N is the positive integer less than M.

By each above-mentioned step, the code word included in code book is divided into M code word group by terminal, and then according to channel information from upper State the N number of code word group of M code word group selection, and the code word in code book group determines CQI, wherein m-th of code word group includes K_m Individual code word, M is positive integer, K_mFor the integer more than 1, m is the positive integer less than or equal to M-1；N is just whole less than M Number.Using above-mentioned technical proposal, solve in correlation technique, it is general in MIMO technology only to feed back a code word, with antenna The increase of number, can cause the problem of systematic function declines, improve systematic function, add the robustness of system.

Preferably, code word of the above-mentioned terminal in above-mentioned N number of code word group determines channel quality information CQI, including it is following at least One of：

Above-mentioned terminal utilizes each code word W of N number of code word group of above-mentioned selection_kAnd W_kEach physics money on the subband acted on Channel matrix in source block, determines the letter on each Physical Resource Block on the subband that each code word of streams of code words 1 and code word are acted on On each Physical Resource Block on the channel quality of road matrix, and the subband that each code word of above-mentioned streams of code words 1 and code word are acted on The channel quality of channel matrix be merged into a CQI₁, wherein, k=0 ..., K_t-1,K_t,For the code word number of N number of code word group；

Above-mentioned terminal is merged into a code word W using the code word of each code word group of N number of code word group of above-mentioned selection_kAnd W_kMade The channel matrix on each Physical Resource Block on subband, is determined on the subband that each code word of streams of code words 1 and code word are acted on Each Physical Resource Block on channel matrix channel quality, and the son that each code word of above-mentioned streams of code words 1 and code word are acted on The channel quality of the channel matrix on each Physical Resource Block taken is merged into a CQI_1,Wherein, k=0 ... ..., N-1；

Above-mentioned terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’Institute The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 1 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of above-mentioned streams of code words 1 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_1,Wherein, k=0 ... ..., K ' -1, K For the code word number of the code word group of above-mentioned selection, K ' is the code word number after merging, and N is positive integer；

Above-mentioned terminal utilizes a code word W of N number of code word group of above-mentioned selection_kAnd W_kPhysics money on the subband acted on Channel matrix H in source block_j, determine the above-mentioned code word W of streams of code words 1_kOn above-mentioned Physical Resource Block on the subband acted on code word Channel matrix H_jChannel quality, and by code word W described in above-mentioned streams of code words 1_kThe thing on the subband acted on code word Manage the channel matrix H on resource block_jChannel quality be merged into a CQI₁, wherein, k=1 ..., K_t-1,K_t,For N number of code word group Code word number, j=0,1 ... ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, and N_PRBFor positive integer.

Preferably, above-mentioned terminal determines channel quality information CQI according to the code word in the code word group of selection, including it is following at least it One：

Above-mentioned terminal utilizes each physics on the subband that each code word W k and Wk of N number of code word group of above-mentioned selection is acted on Channel matrix on resource block, is determined on each Physical Resource Block on the subband that each code word of streams of code words 2 and code word are acted on Each Physical Resource Block on the channel quality of channel matrix, and the subband that each code word of above-mentioned streams of code words 2 and code word are acted on On the channel quality of channel matrix be merged into a CQI₂, wherein, k=0 ..., K_t-1,K_t,For the code word number of N number of code word group；

Above-mentioned terminal is merged into a code word W k and Wk institute using the code word of each code word group of N number of code word group of above-mentioned selection The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 2 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of above-mentioned streams of code words 2 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_2,Wherein, k=0 ..., N-1；

Above-mentioned terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’Institute The channel matrix on each Physical Resource Block on the subband of effect, determines the subband that each code word of streams of code words 2 and code word are acted on On each Physical Resource Block on channel matrix channel quality, and each code word of above-mentioned streams of code words 2 and code word acted on The channel quality of the channel matrix on each Physical Resource Block on subband is merged into a CQI_2,Wherein, k=0 ..., K ' -1, K are The code word number of the code word group of above-mentioned selection, K ' is the code word number after merging, and N is positive integer；

Above-mentioned terminal utilizes a code word W of N number of code word group of above-mentioned selection_kAnd W_kPhysics money on the subband acted on Channel matrix H in source block_j, determine the above-mentioned code word W of streams of code words 2_kOn above-mentioned Physical Resource Block on the subband acted on code word Channel matrix H_jChannel quality, and by code word W described in above-mentioned streams of code words 2_kThe thing on the subband acted on code word Manage the channel matrix H on resource block_jChannel quality be merged into a CQI₁, wherein, k=0 ..., K_t-1,K_t,For N number of code word group Code word number, j=0 ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, N_PRBFor positive integer.

Preferably, by K code word linear combining of above-mentioned each code word group into the individual code word Ws of K '_k’Including：By i in K code word₂ It is identical, i₁Different code words does linear combining and obtains W_k’, or by i₂It is identical, i₁₁Or i₁₂Different code words is done linear combining and obtained W_k’, or by i₂Or i₁₂At least one is identical, but i₁₁Different code words does the code word W after linear combining is merged_k’, or By i₂Or i₁₁At least one is identical, but i₁₂Different code words does the code word W after linear combining is merged_k’, k '=1 ..., K ', its In, K is the code word number of the code word group of above-mentioned selection, and K ' is the code word number after merging.

Preferably, above-mentioned terminal determines code word packet parameters, and above-mentioned terminal determines code word packet parameters according to channel condition information, And feedback code packet signaling.

In embodiments of the present invention, a kind of feedback method of channel information, the above-mentioned Fig. 3 of correspondence technical scheme, Fig. 5 are additionally provided For the flow chart (three) of the feedback method of the channel information according to the embodiment of the present invention, as shown in figure 5, comprising the following steps：

Step S502, is divided into M code word group by the code word included in code book, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, and m is the positive integer less than or equal to M, K_mFor the integer more than 1；N number of code that base station is fed back according to terminal K in the group index of word group or N number of code word group_mThe codewords indexes of individual code word, or, N number of code word group that base station itself is determined The codewords indexes of code word obtain the code word of N number of code word group, N number of code word group choosing from M code word group in group index or the code word group From M code word group, N is the positive integer less than M；

Step S504, precoding information is sent according to obtained above-mentioned code word.

By each above-mentioned step, the code word included in code book is divided into M code word group by base station, the N number of code fed back according to terminal K in the group index of word group or above-mentioned N number of code word group_mThe codewords indexes of individual code word, or, it is N number of that above-mentioned base station itself is determined The codewords indexes of code word obtain the code of above-mentioned N number of code word group from above-mentioned M code word group in the group index of code word group or the code word group Word, wherein, N number of code word group is selected from above-mentioned M code word group, and N is the positive integer less than M；Sent according to obtained above-mentioned code word Precoding information, wherein m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m to be less than or Positive integer equal to M-1；N is the positive integer less than M.Using above-mentioned technical proposal, solve in correlation technique, MIMO skills It is general in art only to feed back a code word, with the increase of number of antennas, the problem of systematic function declines can be caused, system is improved Performance, adds the robustness of system.

Preferably, the above method also includes：Above-mentioned base station determines code word packet parameters, wherein, above-mentioned base station passes through at least following One of parameter determines code word packet parameters：

Preferably, the above method also includes：The code word packet signaling of base station receiving terminal feedback, and letter is grouped according to above-mentioned code word Order determines that code word packet parameters, or base station determine code word packet parameters.

Preferably, above-mentioned code word packet parameters include：

The number M of code word group value, the code word number K of each code word group_mValue and code book be divided into M code word group Packet mode.

Preferably, the packet mode of code word group, at least including one below：According to the index i of the first code book₁By above-mentioned code book The code word of group is divided into M code word group；According to the index i of first the first dimension of code book₁₁The code word of above-mentioned code book group is divided into M Individual code word group；According to the index i of first the second dimension of code book₁₂The code word of above-mentioned code book group is divided into M code word group；According to Two code book index i₁₂The code word of above-mentioned code book group is divided into M code word group.

Preferably, code book is divided into M code word group by base station, at least including one below：By the first code book W₁Index i₁Point Into L₁Individual set C_1k, the second code book W₂Codewords indexes i₂It is divided into L₃Individual set C_3m, group index is j=k × L₃+ m code The codeword set of word group is index set { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all code words, above-mentioned code word group number is M=L₁ ×L₃, above-mentioned code word number is K_j=K_1k×K_3m, wherein, C_1kIt is set { 0,1 ... ..., N₁₁- 1 } a subset, C_1k There is K_1kIndividual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_3mAll It is positive integer, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₃For M₁ Approximate number, N₁₁And M₁Respectively the first code book index i₁Number and the second code book index i₂Number；And/or

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂ It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n×L₃+m Code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, above-mentioned code word group Number M=L₁×L₂×L_3,The code word number of above-mentioned code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1kBe set 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂- 1 } a subset, C_2nThere is K_2n Individual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_2n, K_3mAll it is Positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂ Approximate number, L₃For M₁Approximate number, N_11,N₁₂And M₁Respectively first the first dimension of code book index index i₁₁Number, first yard This second dimension index index i₁₂Number and the second code book index i₂Number.

Preferably, the above method also includes：As above-mentioned L₁=N₁₁, above-mentioned L₃When=1, code book is divided into M code word group includes： I₁Identical but i₂Different all M₁Individual code word is divided into L₂Group, above-mentioned M=N₁₁, each code word group has K=M₁Individual code word, i₂=0 ..., M₁- 1, L₂For M₁An approximate number；Or, as above-mentioned L₁<N₁₁, above-mentioned L₃>When 0, code book is divided into M code word Group includes：By the N of code book₁₁×M₁Individual code word presses i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₂Group, above-mentioned M=L_1×L_2,It is above-mentionedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁Approximate number and more than 1, L₂For M₁An approximate number；Or,

As above-mentioned L₁=N₁₁, above-mentioned L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×N₁₂×M₁Individual code Word presses i₁₁It is divided into N₁₁Group, for any one i₁₁Corresponding code word group, then by i₁₂And/or i₂It is divided into L₂Group, every group of code word is come From identical i₁₁, but at least i₁₂And/or i₂Different code word compositions, above-mentioned M=N₁₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₂Value be N₁₂×M₁An approximate number；Or,

Preferably, above-mentioned base station receives above-mentioned N number of code word group codewords indexes of terminal feedback, including：Above-mentioned base station is received At least one i of terminal₁All or part of bit；Or above-mentioned base station receives at least one i of terminal feedback₁All or part of bit With at least one i₂All or part of bit；Or above-mentioned base station receives at least one i of terminal feedback₁₁All or part of bit and/or One i₁₂All or part of bit；Or above-mentioned base station receives at least one i of terminal feedback₁₁All or part of bit and/or i₁₂ All or part of bit, and feed back at least one i₂All or part of bit.

Preferably, above-mentioned precoding information includes at least one of：The data message of precoding, the frequency information for leading precoding, The enhancing downlink control channel information of precoding.

In embodiments of the present invention, a kind of feedback method of channel information is additionally provided, for above-mentioned Fig. 4 technical scheme, Fig. 6 For the flow chart (four) of the feedback method of the channel information according to the embodiment of the present invention, as shown in fig. 6, comprising the following steps：

Step S602, the CQI of base station receiving terminal feedback；

Step S604, the modulating-coding grade that data are sent is determined according to CQI, wherein, above-mentioned CQI is from M according to terminal Code word in the N number of code word group selected in individual code word group determines channel quality information CQI, wherein, N is the positive integer less than M, Wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M.

The CQI fed back by each above-mentioned step, base station receiving terminal, wherein, terminal determines above-mentioned CQI in the following manner： The code word included in code book is divided into M code word group by terminal, and N number of code word is selected from above-mentioned M code word group according to channel information Group, and code word in above-mentioned N number of code word group determines channel quality information CQI, wherein, N is the positive integer less than M, its In, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M, using above-mentioned skill Art scheme, is solved in correlation technique, general in MIMO technology only to feed back a code word, with the increase of number of antennas, can be led The problem of systematic function declines is caused, systematic function is improved, adds the robustness of system.

Preferably, the above method also includes：Above-mentioned base station determines channel quality information CQI according to above-mentioned code word, and according to above-mentioned CQI determines the modulating-coding grade that data are sent.

General description is carried out to the process of feedback of above-mentioned channel information below in conjunction with an example, but is not used in the restriction embodiment of the present invention.

In a system for including at least one base station and at least one terminal, antenna/port/array element number of each base station configuration For N_t, and antenna/port/array element number of receiving terminal configuration is N_r, N here_tFor the positive integer more than 1, N_rFor more than 0 Positive integer.Antenna is divided into two kinds of situations, (1) linear antenna arrays (2) planar antenna array, under different aerial arrays, code This design is distinguishing.

LTE code book is with the evolution of Standard Edition, also in continuous evolution, 4 days in version Release 8 and Release 9 The code book of the code book of line and 2 antennas is all the form of single codeword, and its value of only one of which PMI is expressed as i=1 ..., N₁₁, N₁₁For code The number of word.Release 10 8 antenna codebooks and Release 12 4 antenna codebook when, be exactly the shape of this feedback of dicode Formula, i.e. code word can be write as W=W₁*W₂Form, and W₁It is that the code book of long-term feedback is referred to as the first code book, typically there is N₁₁ Individual group, each group includes M₁Individual alternative wave beam, user's selection N₁₁Individual group of a group index feeds back to base station, this feedback Typically use PMI₁To quantify and feed back, its value typically uses i₁=1 ..., N₁₁Represent, N₁₁For above-mentioned W₁Number；W₂Represent one The code book of individual short-term feedback, referred to as the second code book, its effect is in W₁M is selected in code word₁One in individual alternative wave beam, And beam selection the polarization phases Co-phasing, W of each polarised direction selection for same data Layer₂In each code word use PMI₂Quantify and feed back, its value is i₂=1 ..., M₁, M₁For W₂Number, wherein the N under every kind of rank₁₁And M₁Value Difference, specifically may be referred to the agreements of LTE Release 10.

Code word before R12 belongs to 1D code word, set in Release 13 code book both for 1D aerial arrays In meter, due to having used more antennas, the dimension of code book becomes much larger.The topology of antenna is typically also planar array, There is the Antenna Design 2D code word in two dimension directions.So as to the first code book W₁In each wave beam have form 2 tie up shape Formula, wherein, v_mAnd u_nDiscrete fourier vector (the Discrete Fourier of respectively the first dimension and the second dimension Transform, DFT),Represent v_mAnd u_nKronecker products, m=1,2 ..., B₁, n=1,2 ..., B₂。 (in the present invention, port, which includes antenna/port/ ports/transmission unit/a period of time/array element etc., can send signal for first dimension port Device) number N₁It is individual, the second dimension port number N₂Individual, the corresponding DFT in the first dimension port has carried out O₁Over-sampling again, the second dimension The corresponding DFT in port of degree has carried out O₂The discrete fourier arrow of over-sampling again, above-mentioned first dimension or the second dimension antenna The number of amount is the multiple of the oversample factor of port number, so there is B₁=N₁*O₁, B₂=N₂*O₂, O₁For the first dimension over-sampling because Son, O₂For the second dimension oversample factor.First dimension code book PMI of the first code book₁₁Represent, its value is i₁₁=1 ..., N₁₁, The code book PMI of second dimension of the first code book₁₂Represent, its value is i₁₂=1 ..., N₁₂.For each above-mentioned PMI₁₁And PMI₁₂ Index, have M₁Individual W₂Code word, each W₂Code word is exactly in order to from W₁In selection 2 tie up wave beams, and not same polarization The Co-phasing in direction, corresponding codewords indexes are PMI₂, use i₂=1 ..., M₁Represent.Due to PMI₁₁, PMI₁₂And PMI₂'s The bit numbers sum of feedback is general than larger, and feedback overhead is big, and the complexity of user's selection code book is high, is asked to solve this Topic, normal structure is by by W₂In M₁Individual code word is divided into the configuration of K kinds, and every kind of configuration includes M₁Code book in individual code word Set, such as one of configuration set is as follows, i ' here₂That is PMI₂In a specific index.As can be seen that every Individual config is that a subset in 32 code words is closed.The order of this configuration typically has the configuration of high-level signaling codebook subset Signaling (Codebook Config) is allocated to user, and the signaling includes 4 kinds of possible values, respectively Config1, Config2, Config3、Config4。

Without loss of generality, the first dimension port number N₁₁=the 1 or second dimension port number N₁₂=1 code word turns into 1D code words, and the Dimension port number N₁₁>The 1 and second dimension port number N₁₂>1 code word turns into 2D code words.If 1D code words and be single codeword Structure represents with PMI or i, if 1D code words and using PMI in double codeword structures₁And PMI₂It is common to represent, index by i₁/i₂It is common to represent, if 2D code words PMI₁₁, PMI₁₂, PMI₂Three code book indexes are represented or by indexing i jointly₁₁, i₁₂, i₂It is common to represent.

Work as N_tRoot transmission antenna is linear antenna arrays, i.e., above-mentioned N₁=1 or this N₂=1 situation.Code word under different rank Number and form of codewords are different.Code word such as table 1 under such as 4 antenna rank=1 and rank=2, shown in 2：

Table 1

Table 7.2.4-0A:Codebook for 1-layer CSI reporting using antenna ports 0 to 3 or 15 to 18

Table 2

Table 7.2.4-0B:Codebook for 2-layer CSI reporting using antenna ports 0 to 3 or 15 to 18

Code word such as table 3 below under such as 8 antenna rank=1 and rank=2, shown in 4：

Table 3

Table 7.2.4-1:Codebook for 1-layer CSI reporting using antenna ports 15 to 22

Table 4

Table 7.2.4-2:Codebook for 2-layer CSI reporting using antenna ports 15 to 22

When antenna has planar array, equivalent to N₁>=2 and N₂>=2, its corresponding code book with number of antennas, what codebook subset was closed Configuration Config, and rank are relevant, such as in the case of rank=1, and all kinds of Codebook-config are 1 and 2 situation Under code book such as table 5 below, shown in 6：

Table 5

Table 7.2.4-10:Codebook for 1-layer CSI reporting using antenna ports 15 to 14+P

Table 6

There is Codebook-Config=3 in addition, 4 situation is similar with Codebook-Config=2 situation, simply selection Beam index is different, does not enumerate here.

Other rank situation is similar, will not enumerate, and specifically refer to LTE TR 36213.

In addition, the first dimension port number N1, N2, and decimation factor O1 and O2 have some preferred dispositions such as in LTE Shown in lower form, but the present invention is not limited to some configurations or some other configurations such as table 7 below：

Table 7

Based on system described above, terminal carries out code book packet, select in above-mentioned packet with the preferable one group of code of channel matched Word feeds back to base station.The index or codewords indexes of the code word group of base station receiving terminal feedback, and the code word group fed back based on terminal Codewords indexes in index or code word group obtain more than one code word, with above-mentioned code word to data and/or pilot tone or enhancing Down control channel ePDCCH.

It should be noted that for foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of dynamic Combine, but those skilled in the art should know, the present invention is not limited by described sequence of movement, because foundation The present invention, some steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know, say Embodiment described in bright book belongs to preferred embodiment, and involved action and module is not necessarily essential to the invention.

Additionally provide a kind of feedback device of channel information in the present embodiment, applied to terminal, for realize above-described embodiment and Preferred embodiment, had carried out repeating no more for explanation, the module being related in the device had been illustrated below.Such as with Used in lower, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples are retouched The device stated preferably is realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated 's.Fig. 7 is the structured flowchart (one) of the feedback device of the channel information according to the embodiment of the present invention.As shown in fig. 7, the device Including：

First division module 70, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M-1；

First choice module 72, for according to channel information from the N number of code word group of above-mentioned M code word group selection, wherein, N is small In M positive integer；

First feedback module 74, is included for feeding back group index or above-mentioned N number of code word group comprising above-mentioned N number of code word group The configured information of the codewords indexes of code word.

By the comprehensive function of above-mentioned modules, the code word included in code book is divided into M code word group, and then believe according to channel Breath feeds back the group index or above-mentioned N number of code for including above-mentioned N number of code word group from the N number of code word group of above-mentioned M code word group selection The configured information of the codewords indexes for the code word that word group is included, wherein m-th of code word group includes K_mIndividual code word, M is positive integer, K_m For the integer more than 1, m is the positive integer less than or equal to M-1；N is the positive integer less than M.Using above-mentioned technical proposal, Solve in correlation technique, it is general in MIMO technology only to feed back a code word, with the increase of number of antennas, system can be caused The problem of hydraulic performance decline, systematic function is improved, add the robustness of system.

Preferably, above-mentioned first choice module 72, is additionally operable to determine code word packet parameters by the high-level signaling of reception；Or pass through The physical layer signaling of reception determines code word packet parameters；Or determine code word packet parameters.

Preferably, above-mentioned first choice module 72, is additionally operable to determine code word packet parameters at least through one of following parameter：First Dimension port number N₁And/or the second dimension port number N₂；Codebook subset option and installment；First dimension oversample factor O₁And/or second Dimension oversample factor O₂；The order of channel；Transmission mode；Pre-coding matrix instruction PMI enable instructions, order designator RI enable instructions；Channel condition information CSI feedback model；CSI feedback classification.

Preferably, above-mentioned first choice module 72, is additionally operable at least determine packet mode including one below:According to the first code book Index i₁The code word of above-mentioned code book group is divided into M code word group；According to the index i of first the first dimension of code book₁₁By above-mentioned code The code word of this group is divided into M code word group；According to the index i of first the second dimension of code book₁₂The code word of above-mentioned code book group is divided into M Individual code word group；According to the second code book index i₁₂The code word of above-mentioned code book group is divided into M code word group.

Preferably, the packet mode of above-mentioned M code word group, including：By the first code book W₁Index i₁It is divided into L₁Individual set C_1k, The second code book W₂Codewords indexes i₂It is divided into L₃Individual set C_3m, group index is j=k × L₃The codeword set of+m code word group is Index set { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all code words, above-mentioned code word group number is M=L₁×L₃, above-mentioned code word number For K_j=K_1k×K_3m, wherein, C_1kIt is set { 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_3m It is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_3mAll it is positive integer, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₃For M₁Approximate number, N₁₁And M₁Respectively One code book index i₁Number and the second code book index i₂Number；And/or

Preferably, as above-mentioned L₁=N₁₁, above-mentioned L₃When=1, code book is divided into M code word group includes：I₁Identical but i₂It is different All M₁Individual code word is divided into L₂Group, above-mentioned M=N₁₁, each code word group has K=M₁Individual code word, i₂=0 ..., M₁- 1, L₂For M₁An approximate number；Or, as above-mentioned L₁<N₁₁, above-mentioned L₃>When 0, code book is divided into M code word group includes：By code book N₁₁×M₁Individual code word presses i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words It is divided into L₂Group, above-mentioned M=L_1×L_2,It is above-mentionedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁Approximate number and more than 1, L₂For M₁An approximate number；Or, as above-mentioned L₁=N₁₁, above-mentioned L₃>When 0, code book is divided into M Code word group includes：By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁It is divided into N₁₁Group, for any one i₁₁Corresponding code word group, I is pressed again₁₂And/or i₂It is divided into L₂Group, every group of code word comes from identical i₁₁, but at least i₁₂And/or i₂Different code word compositions, it is above-mentioned M=N₁₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₂Value For N₁₂×M₁An approximate number；Or,

Preferably, above-mentioned feedback module 74, is additionally operable to feed back the codewords indexes that above-mentioned N number of code word group includes code word, including：On State terminal and feed back at least one i₁All or part of bit；Or above-mentioned terminal feeds back at least one i₁All or part of bit and at least one Individual i₂All or part of bit；Or above-mentioned terminal feeds back at least one i₁₁All or part of bit and/or i₁₂All or part of bit； Or above-mentioned terminal feeds back at least one i₁₁All or part of bit and/or i₁₂All or part of bit, and feed back at least one i₂ All or part of bit.

Additionally provide a kind of feedback device of channel information in the present embodiment, applied to terminal, for realize above-described embodiment and Preferred embodiment, had carried out repeating no more for explanation, the module being related in the device had been illustrated below.Such as with Used in lower, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples are retouched The device stated preferably is realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated 's.Fig. 8 is the structured flowchart (two) of the feedback device of the channel information according to the embodiment of the present invention.As shown in figure 8, the device Including：

Second division module 80, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M；

Second selecting module 82, for selecting N number of code word group from above-mentioned M code word group according to channel information；

First determining module 84, channel quality information CQI is determined for the code word in above-mentioned N number of code word group；

Second feedback module 86, for feeding back the CQI determined, wherein, N is the positive integer less than M.

By above-mentioned modules, the code word included in code book is divided into M code word group, and then according to channel information from above-mentioned M The individual N number of code word group of code word group selection, and code word in code book group determines CQI, wherein m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m is the positive integer less than or equal to M-1；N is the positive integer less than M.Using Above-mentioned technical proposal, is solved in correlation technique, general in MIMO technology only to feed back a code word, with the increasing of number of antennas Plus, the problem of systematic function declines can be caused, systematic function is improved, the robustness of system is added.

Preferably, above-mentioned first determining module 84 is additionally operable to each code word W of N number of code word group using above-mentioned selection_kAnd W_k The channel matrix on each Physical Resource Block on the subband acted on, determines the son that each code word of streams of code words 1 and code word are acted on The channel quality of the channel matrix on each Physical Resource Block taken, and above-mentioned channel quality is merged into a CQI₁, wherein, K=0 ..., K_t-1,K_t, it is the code word number of N number of code word group；

The code word that first determining module 84 is additionally operable to each code word group of N number of code word group using above-mentioned selection is merged into a code word W_kAnd W_kThe channel matrix on each Physical Resource Block on the subband acted on, determines each code word of streams of code words 1 and code word institute The channel quality of the channel matrix on each Physical Resource Block on the subband of effect, and above-mentioned channel quality is merged into one CQI_1,Wherein, k=0 ... ..., N-1；

First determining module 84 is additionally operable to K code word linear combining of each code word group in N number of code word group into the individual code words of K ' W_k’, and W_k’The channel matrix on each Physical Resource Block on the subband acted on, determines each code word of streams of code words 1 and code word The channel quality of the channel matrix on each Physical Resource Block on the subband acted on, and above-mentioned channel quality is merged into one CQI_1,Wherein, k=0 ... ..., K ' -1, K are the code word number of the code word group of above-mentioned selection, and K ' is the code word number after merging, and N is Positive integer；

First determining module 84 is additionally operable to a code word W of N number of code word group using above-mentioned selection_kAnd W_kThe subband acted on On a Physical Resource Block on channel matrix H_j, determine the above-mentioned code word W of streams of code words 1_kIt is upper on the subband acted on code word State the channel matrix H on Physical Resource Block_jChannel quality, and above-mentioned channel quality is merged into a CQI₁, wherein, K=1 ..., K_t-1,K_t,For the code word number of N number of code word group, j=0,1 ... ..., N_PRB- 1, N_PRBThe physical resource taken for a son The number of block, and N_PRBFor positive integer.

Preferably, the first determining module 84 is additionally operable to be made using each code word W k and Wk of N number of code word group of above-mentioned selection The channel matrix on each Physical Resource Block on subband, is determined on the subband that each code word of streams of code words 2 and code word are acted on Each Physical Resource Block on channel matrix channel quality, and above-mentioned channel quality is merged into a CQI₂, wherein, K=0 ..., K_t-1,K_t,For the code word number of N number of code word group；

The code word that first determining module 84 is additionally operable to each code word group of N number of code word group using above-mentioned selection is merged into a code word The channel matrix on each Physical Resource Block on the subband that Wk and Wk are acted on, determines each code word of streams of code words 2 and code word institute The channel quality of the channel matrix on each Physical Resource Block on the subband of effect, and above-mentioned channel quality is merged into one CQI_2,Wherein, k=0 ..., N-1；

First determining module 84 is additionally operable to K code word linear combining of each code word group in N number of code word group into the individual code words of K ' W_k’, and W_k’The channel matrix on each Physical Resource Block on the subband acted on, determines each code word of streams of code words 2 and code word The channel quality of the channel matrix on each Physical Resource Block on the subband acted on, and above-mentioned channel quality is merged into one CQI_2,Wherein, k=0 ..., K ' -1, K are the code word number of the code word group of above-mentioned selection, and K ' is the code word number after merging, and N is just Integer；

First determining module 84 is additionally operable to a code word W of N number of code word group using above-mentioned selection_kAnd W_kThe subband acted on On a Physical Resource Block on channel matrix H_j, determine the above-mentioned code word W of streams of code words 1_kIt is upper on the subband acted on code word State the channel matrix H on Physical Resource Block_jChannel quality, and above-mentioned channel quality is merged into a CQI₁, wherein, K=0 ..., K_t-1,K_t,For the code word number of N number of code word group, j=0 ..., N_PRB- 1, N_PRBThe Physical Resource Block taken for a son Number, N_PRBFor positive integer.

Additionally provide a kind of feedback device of channel information in the present embodiment, applied to base station, for realize above-described embodiment and Preferred embodiment, had carried out repeating no more for explanation, the module being related in the device had been illustrated below.Such as with Used in lower, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples are retouched The device stated preferably is realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated 's.Fig. 9 is the structured flowchart (three) of the feedback device of the channel information according to the embodiment of the present invention.As shown in figure 9, the device Including：

3rd division module 90, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, and m is the positive integer less than or equal to M, K_mFor the integer more than 1；

Second determining module 92, for K in the group index of N number of code word group fed back according to terminal or above-mentioned N number of code word group_m The codewords indexes of individual code word, or, the code of code word in the group index or the code word group of N number of code word group that above-mentioned base station itself is determined Word indexing obtains the code word of above-mentioned N number of code word group from above-mentioned M code word group, wherein, N number of code word group is selected from above-mentioned M code Word group, N is the positive integer less than M；

Sending module 94, for sending precoding information according to obtained above-mentioned code word.

By above-mentioned modules, the code word included in code book is divided into M code word group by base station, the N number of code fed back according to terminal K in the group index of word group or above-mentioned N number of code word group_mThe codewords indexes of individual code word, or, it is N number of that above-mentioned base station itself is determined The codewords indexes of code word obtain the code of above-mentioned N number of code word group from above-mentioned M code word group in the group index of code word group or the code word group Word, wherein, N number of code word group is selected from above-mentioned M code word group, and N is the positive integer less than M；Sent according to obtained above-mentioned code word Precoding information, wherein m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m to be less than or Positive integer equal to M-1；N is the positive integer less than M.Using above-mentioned technical proposal, solve in correlation technique, MIMO skills It is general in art only to feed back a code word, with the increase of number of antennas, the problem of systematic function declines can be caused, system is improved Performance, adds the robustness of system.

Additionally provide a kind of feedback device of channel information in the present embodiment, applied to base station, for realize above-described embodiment and Preferred embodiment, had carried out repeating no more for explanation, the module being related in the device had been illustrated below.Such as with Used in lower, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples are retouched The device stated preferably is realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated 's.Figure 10 is the structured flowchart (four) of the feedback device of the channel information according to the embodiment of the present invention.As shown in Figure 10, the dress Put including：

Second receiving module 1002, the CQI fed back for receiving terminal；

3rd determining module 1004, for determining the modulating-coding grade that data are sent according to above-mentioned CQI, wherein, above-mentioned CQI Channel quality information CQI is determined for the code word in N number of code word group for being selected according to terminal from M code word group, wherein, N is Positive integer less than M, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, M=0,1 ..., M.

Above-mentioned technical proposal is illustrated below in conjunction with preferred embodiment, but is not used in the restriction embodiment of the present invention.

Preferred embodiment 1:Code book is grouped based on high-rise or physical layer signaling

The method that base station and terminal arrange a code book packet, and it is every kind of possible with a signaling CodebookGroup denoting signaling Group technology.CodebookGroup signalings take different values to represent different group technologies, above-mentioned signaling by high-level signaling or Physical layer signaling is sent to terminal, and terminal is received after signaling, and the method for packet is determined according to the value of signaling, and code book is carried out Packet, according to channel matrix H select code word group, and feedback code group index or the corresponding codewords indexes of code word group to base station. Base station receives code word group index or the corresponding codewords indexes of code word group determine pre-coding matrix.And to pre-coding matrix to be sent Signal do and sent after precoding processing, its process is as follows：

For terminal：

(A1) high-rise or physical layer signaling CodebookGroup is received, and code book is grouped according to its value, is grouped Under method

For 1D code books, including 4 antennas, 8 antennas and other antenna values

The first code book W₁Index i₁It is divided into L₁Group C_1k,C_1kIt is { 0 ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual member Element, k=0 ..., L₁- 1, the second code book W2 codewords indexes i₂It is divided into L₃Group C_3m,C_3mIt is { 0 ..., M₁- 1 } a son Close, C_3mThere is K_3mIndividual element, m=0 ..., L₃- 1, wherein, N₁₁And M₁Respectively the first code book index i₁Number and second code This index i₂Number.N₁₁*M₁Individual code word divide into M=L₁*L₃Individual code word group, for any group of code word therein, than Such as jth=k*L₃The codeword set of+m group code word groups is index set { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all code words, altogether It is K to have code word number_j=K_1k*K_3mIt is individual, it is preferred here that K_j=K, K are positive integer more than 1, or K_j=a_jK_j-1, a_j For positive integer, K₀More than 1, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., wherein M-1, L₁For N₁₁'s Approximate number, L₃For M₁Approximate number.

According to L₁And L₃Different values, have following specific preferred packet mode：

Mode 1：L₁=N₁₁, L₃=1, by the N of code book₁₁*M₁Individual code word first presses i₁It is divided into L₁=N₁₁Group, for any one i₁, i₁=0 ... N₁₁- 1, i₁Identical but i₂Different all M₁Individual code word is divided into L₂=1 group, i.e., a total of M=N₁₁Group, every group of K=M₁ Individual code word, such as code word group 1 are { i₁,i_2|i₂=0~M₁-1,i₁=0 } ..., code word group N₁₁For { i₁,i₂|i₂=0~M₁-1,i₁=N₁₁- 1 }, here N₁₁For i₁The number of index, M₁For i₂All numbers；

Mode 2：L₁=N₁₁, L₃For other integers more than 1, by the N of code book₁₁*M₁Individual code word first presses i₁It is divided into N₁₁Group is right In any one i₁, i₁=0 ... N₁₁- 1, i₁Identical but i₂Different all M₁Individual code word is divided into L₃Group, i.e., a total of M=N₁₁*L₃ Group, every group of K=M₁/L₃Individual code word, such as jth=k*L₃The code word group of+m groups is { i₁,i₂|i₁=k, i₂∈C_3m, wherein, K=0 ..., N₁₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, C_3mIt is { 0 ..., M₁- 1 } a subset is closed, and it is i2 The a subset of all values.Such as in L₃When=2, C₃₁={ 0~M₁/2},C₃₂={ M₁/ 2+1~M₁- 1 }, it can also be discrete take Value, C₃₁For i₂Take all values of even number, C₃₂For all i₂Take the set of odd number, wherein L₂For M₁Approximate number.

Mode 3：L₁For the integer more than 1, L₃=1, by the N of code book₁₁*M₁Individual code word first presses i₁It is divided into L₁Group, for every group Any one i in code book₁, i₁It is identical, i₂Different all code words are divided into L₃=1 group.I.e. a total of M=L₁Group, every group Code word number is K=N₁₁/L₁*M₁.The code word group of such as kth group is { i₁,i₂|i₁=C_1k,i₂∈ { 0~M₁, wherein, C_1k, k=0 ..., L₁- 1, it is { 0 ..., N₁₁- 1 } a subset is closed, and it is i₁The a subset of all values.Such as in L₁=2 When, C₁₁={ 0~N₁₁/2},C₁₂={ N₁₁/ 2+1~N₁₁- 1 } or discrete value, C₁₁For i₁Take all values of even number, C₁₂ For all i₂Take the set of odd number, wherein L₁For N₁₁Approximate number.

Method 4：L₁For the integer more than 1, L₃For the integer more than 1, by the N of code book₁₁*M₁Individual code word first presses i₁It is divided into L₁Group, For any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₃Group.I.e. a total of M=L₁*L₃ Group, every group of code word number is K=N₁₁/L₁*M₁/L_3。Such as j=k*L₃The code word group of+m groups is { i₁,i₂|i₁=C_1k,i₂∈C_3m, Wherein, C_1kIt is { 0 ..., N₁₁- 1 } a subset is closed, k=0 ..., L₁- 1, it is a subset of all values of i1.Such as In L₁When=2, C₁₁={ 0~N₁₁/2},C₁₂={ N₁₁/ 2+1~N₁₁-1}；Can also be discrete value, C₁₁For i₁Take all of even number Value, C₁₂For all i₂Take the set of odd number, wherein L₁For N₁₁Approximate number.C_3mIt is { 0 ..., M₁- 1 } a subset is closed, It is i₂The a subset of all values, m=0 ..., L₃- 1, j=0 ..., M-1.Such as in L₃When=2, C₃₁={ 0~M₁/2},C₃₂={ M₁/ 2+1~M₁- 1 } or discrete value, C₃₁For i₂Take all values of even number, C₃₂It is all i₂Take the set of odd number, wherein L₃For M₁Approximate number.

For 2D code books：The code book of port number such as including 8,12,16

The first code book W₁The first dimension index i₁₁It is divided into L₁Group C_1k,C_1kIt is { 0 ..., N₁₁- 1 } a subset, C_1kHave K_1kIndividual element, k=0 ..., L₁- 1, the first code book W₁The second dimension index i₁₂It is divided into L₂Group C_2n,C_2nIt is { 0 ..., N₁₂-1} A subset, C_2nThere is K_2nIndividual element, n=0 ..., L₂- 1, the second code book W₂Index i₂It is divided into L₃Group C_3m,C_3mBe 0 ..., M₁- 1 } a son is closed, C_3mThere is K_3mIndividual element, m=0 ..., L₃- 1, N₁₁*N₁₂*M₁Individual code word divide into M=L₁*L₂*L₃ Individual code word group, such as jth=k*L₂*L₃+n*L₃+ m code word groups for index set {i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, its code word number K_j=K_1k*K_2n*K_3mIt is individual, here, Preferably, K_j=K, K are positive integer more than 1, or K_j=a_jK_j-1, a_jFor positive integer, K₀More than 1, wherein, k=0 ..., L₁- 1, N=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., wherein M-1, L₁For N₁₁Approximate number, L₂For N₁₂Approximate number, L₃For M₁ Approximate number.

According to L₁,L₂And L₃Different values, have following specific preferred packet mode：

Mode 5：L₁=N₁₁, L₂=N₁₂, L₃=1, by the N of code book₁₁*N₁₂*M₁Individual code word first presses i₁₁And i₁₂It is divided into N₁₁*N₁₂Group, I is pressed again₂N₁₁*N₁₂Group code word is divided into L₂=1 group, i.e., i₁₁And i₁₂Identical but i₂Different all M₁Individual code word is divided into one group, I.e. a total of M=N₁₁*N₁₂Group, every group of K=M₁Individual code word, such as code word group 1 are { i₁₁,i₁₂,i₂|i₁₁=0, i₁₂=0, i₂=0~M₁- 1 } ..., N₁₁*N₁₂Code word group is { i₁₁,i₁₂,i₂|i₂=0~M₁-1,i₁₁=N₁₁- 1, i₁₂=N₁₂- 1 }, N here₁₁For i₁₁The number of index, N₁₂ For i₁₂The number of index, M₁For i₂All numbers；

Method 6：L₁=N₁₁, L₂=N₁₂, L₃For the integer more than 1, by the N of code book₁₁*N₁₂*M₁Individual code word first presses i₁₁And i₁₂Point Into L₁=N₁₁*N₁₂Group, then by i₂L₁Group code word is divided into L₃Group, every group of code word is from the different i of at least one₁₁And/or i₁₂With At least two difference i₂Code word composition, i.e., a total of M=N₁₁*N₁₂*L₃Group, every group of K=M₁/L₃Individual code word, such as J=k*N₁₂*L₃+n*L₃The code word group of+m groups is { i₁₁,i₁₂,i₂|i₁₁=k, i₁₂=n, i₂∈C_3m, wherein, k=0 ..., N₁₁- 1, N=0 ..., N₁₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, C_3mIt is a subset conjunction of { 0 ..., M1-1 }, it is i₂Institute There is a subset of value.Such as in L₃When=2, C₃₁={ 0~M₁/2},C₃₂={ M₁/ 2+1~M₁- 1 } or discrete value, C₃₁For i₂Take all values of even number, C₃₂For all i₂Take the set of odd number, wherein L₃For M₁Approximate number.

Method 7：L₁=N₁₁, L₂=for integer and/or L more than 1₃For the integer more than 1, by the N of code book₁₁*N₁₂*M₁Individual code word First press i₁₁It is divided into N₁₁Group, for any one i₁₁Corresponding code word group, then by i₁₂And/or i₂It is divided into L₂*L₃Group, every group of code word From identical i₁₁But at least i₁₂And/or i₂Different code word compositions, i.e., a total of M=N₁₁*L₂*L₃Group, every group of K=M₁/L₃*N₁₂/L₂ Individual code word, such as jth=k*L₂*L₃+n*L₃The code word group of+m groups is { i₁₁,i₁₂,i₂|i₁₁=k, i₁₂=C_2n,i₂∈C_3m, wherein, K=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, C_2nIt is { 0 ..., N₁₂- 1 } a subset is closed, C_3mIt is { 0 ..., M₁- 1 } a subset is closed, wherein, L₂For N₁₂Approximate number, L₂For M₁Approximate number.

Method 8：L₂=N₁₂, L₁=for integer and/or L more than 1₃For the integer more than 1, by the N of code book₁₁*N₁₂*M₁Individual code word First press i₁₂It is divided into L₂=N₁₂Group, for any one i₁₂Corresponding code word group, then by i₁₁And/or i₂It is divided into L₁*L₃Group, every group Code word comes from identical i₁₂But at least i₁₁And/or i₂Different code word compositions, i.e., a total of M=N₁₂*L₁*L₃Group, every group K=M₁/L₃*N₁₁/L₁Individual code word, such as jth=k*N₁₂*L₃+n*L₃+ m group code word group be {i₁₁,i₁₂,i₂|i₁₁=C_1k,i₁₂=n, i₂∈C_3m, wherein, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, C_2kIt is { 0 ..., N₁₂- 1 } a subset is closed, C_3mIt is { 0 ..., M₁- 1 } a subset is closed, wherein, L₂For N₁₂ Approximate number, L₂For M₁Approximate number.

Method 9：L₁For the integer and/or L more than 1₂For the integer and/or L more than 1₃For the integer more than 1, the first code book W₁The first dimension index i₁₁It is divided into L₁Group C_1k,C_1kIt is { 0 ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, k=0 ..., L₁ - 1, the first code book W₁The second dimension index i₁₂It is divided into L₂Group C_2n,C_2nIt is { 0 ..., N₁₂- 1 } a subset, C_2nHave K_2nIndividual element, n=0 ..., L₂- 1, the second code book W₂Index i₂It is divided into L₃Group C_3m,C_3mIt is { 0 ..., M₁- 1 } one Son is closed, C_3mThere is K_3mIndividual element, m=0 ..., L₃- 1, N₁₁*N₁₂*M₁Individual code word divide into M=L₁*L₂*L₃Individual code word group, Such as jth=k*L₂*L₃+n*L₃+ m code word groups for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,i₁₂=C_2n,i₂∈C_3mCorresponding All code words, its code word number K_j=K_1k*K_2n*K_3mIt is individual, wherein, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, wherein L₁For N₁₁Approximate number, L₂For N₁₂Approximate number, L₃For M₁Approximate number.

(A2) terminal receives CSI-RS pilot signals, and estimates channel H according to pilot signal, according to H selections with H most The N number of code word group matched somebody with somebody, including signal to noise ratio are maximized, and letter is dried than methods such as maximums to select code word group, and feeds back above-mentioned N The index of individual code word group.Mode in the value that above-mentioned code word group index is 0~M-1, such as embodiment 1 in step (A1) J indexes in 1~9, N is positive integer.

Certainly, terminal can not also feed back above-mentioned N number of code word group index, and feed back the rope of N number of code word group inner code word of selection Draw, including but not limited to following feedback system：

Feedback system 1：Feed back 1 i₁All or part of bit, be mainly used in L in 1D code words₁=N₁₁, and L₃=1 feelings Condition, such as code book packet mode 1, i₁For the first code book codewords indexes or index group C_1kGroup index.

Feedback system 2：Feed back 1 i₁All or part of bit and at least one i₂All or part of bit, be mainly used in L in 1D code words₁=N₁₁, and L₃>1 situation, such as code book packet mode 2, i₁For the first code book W₁Codewords indexes or Index group C_1kGroup index, i₂For the second code book W₂Codewords indexes or index group C_3kGroup index.

Feedback system 3：Feedback is more than 1 i₁All or part of bit and more than 1 i₂All or part of bit, mainly For L in 1D code words₁<N₁₁, and L₃=1 situation, such as code book packet mode 3, i₁For the first code book W₁Codewords indexes, also may be used To be index group C_1kGroup index, i₂For the second code book W₂Codewords indexes or index group C_3kGroup index.

Feedback system 4：Feedback is more than 1 i₁All or part of bit and at least one i₂All or part of bit, mainly For L in 1D code words₁<N₁₁, and L₃>1 situation, such as code book packet mode 4, i₁For the first code book W₁Codewords indexes, also may be used To be index group C_1kGroup index, i₂For the second code book W₂Codewords indexes or index group C_3kGroup index.

Feedback system 5：Feed back 1 i₁₁All or part of bit and 1 i₁₂All or part of bit, be mainly used in 2D L in code word₁=N₁₁, L₂=N₁₂And L₃=1 situation, such as code book packet mode 5, i₁₁For the first code book W₁First dimension code word rope Draw or index group C_1kGroup index, i₁₂For first code book W1 the second dimension codewords indexes or index group C_2nGroup index.

Feedback system 6：Feed back 1 i₁₁All or part of bit and 1 i₁₂All or part of bit and at least one i₂ All or part of bit, be mainly used in L in 2D code words₁=N₁₁, L₂=N₁₂And L₃>1 situation, such as code book packet mode 6, i₁₁ For the first code book W₁First dimension codewords indexes or index group C_1kGroup index, i₁₂For the first code book W₁Second dimension Codewords indexes or index group C_2nGroup index, i₂For the second code book W₂Codewords indexes or index group C_3k Group index.

Feedback system 7：Feed back 1 i₁₁All or part of bit and at least one i₁₂All or part of bit and at least one Individual i₂All or part of bit, be mainly used in L in 2D code words₁=N₁₁, L₂<N₁₂And L₃>1 situation, such as code book packet side Formula 7, i₁₁For the first code book W₁First dimension codewords indexes or index group C_1kGroup index, i₁₂For the first code book W₁ Second dimension codewords indexes or index group C_2nGroup index, i₂For the second code book W₂Codewords indexes or rope Draw a group C_3kGroup index.

Feedback system 8：Feed back 1 i₁₂All or part of bit and at least one i₁₁All or part of bit and at least one Individual i₂All or part of bit, be mainly used in L in 2D code words₂=N₁₂, L₁<N₁₁And L₃>1 situation, such as code book packet side Formula 8, i₁₁For the first code book W₁First dimension codewords indexes or index group C_1kGroup index, i₁₂For the first code book W₁ Second dimension codewords indexes or index group C_2nGroup index, i₂For the second code book W₂Codewords indexes or rope Draw a group C_3kGroup index.

Feedback system 9：Feed back at least one i₁₁All or part of bit and/or at least one i₁₂All or part of bit And/or at least one i₂All or part of bit, be mainly used in L in 2D code words₂<N₁₂, L₁<N₁₁And L₃>1 situation, such as Code book packet mode 9, i₁₁For the first code book W₁First dimension codewords indexes or index group C_1kGroup index, i₁₂For One code book W₁Second dimension codewords indexes or index group C_2nGroup index, i₂For the second code book W₂Codewords indexes, Can also be index group C_3kGroup index.

(A3) terminal is according to multiple code word combined calculation CQI of N number of code word group of selection, and feeds back above-mentioned CQI.

Wherein, N is positive integer, and this step is preferred step, and terminal can be without CQI feedback.If feeding back CQI, Wherein CQI computational methods include：Method 1：Above-mentioned terminal utilizes each code word W of N number of code word group of above-mentioned selection_kWith W_kThe channel matrix H on each Physical Resource Block on the subband acted on_j, determine each W of streams of code words 2_kAnd W_kActed on The channel matrix H on each Physical Resource Block on subband_jChannel quality, and by each W of above-mentioned streams of code words 2_kAnd W_kMade The channel matrix H on each Physical Resource Block on subband_jChannel quality be merged into a CQI₁, wherein, k=1 ..., K_t,, K_t,For the code word number j=1 of N number of code word group ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is just whole Number.

In the case where channel order is more than 1, in addition to：

Above-mentioned terminal utilizes each code word W of N number of code word group of above-mentioned selection_kAnd W_kEach physics money on the subband acted on Channel matrix H in source block_j, determine each W of streams of code words 2_kAnd W_kThe letter on each Physical Resource Block on the subband acted on Road matrix H_jChannel quality, and by each W of above-mentioned streams of code words 2_kAnd W_kOn each Physical Resource Block on the subband acted on Channel matrix H_jChannel quality be merged into a CQI₂, wherein, k=1 ..., K_t,,K_t,For the code word number of N number of code word group, J=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

Method 2：Above-mentioned terminal is merged into a code word W using the code word of each code word group of N number of code word group of above-mentioned selection_kWith W_kThe channel matrix H on each Physical Resource Block on the subband acted on_j, determine each W of streams of code words 1_kAnd W_kActed on Subband on each Physical Resource Block on channel matrix H_jChannel quality, and by each W of above-mentioned streams of code words 1_kAnd W_k The channel matrix H on each Physical Resource Block on the subband acted on_jChannel quality be merged into a CQI_1,Wherein, K=1 ..., N_,J=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

In the case where channel order is more than 1, in addition to：

Above-mentioned terminal is merged into a code word W using the code word of each code word group of N number of code word group of above-mentioned selection_kAnd W_kMade The channel matrix H on each Physical Resource Block on subband_j, determine each W of streams of code words 2_kAnd W_kThe subband acted on On each Physical Resource Block on channel matrix H_jChannel quality, and by each W of above-mentioned streams of code words 2_kAnd W_kActed on Subband on each Physical Resource Block on channel matrix H_jChannel quality be merged into a CQI_2,Wherein, k=1 ..., N_, J=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

Method 3：Above-mentioned terminal is individual into K ' using K code word linear combining in each code book group of N number of code word group of above-mentioned selection Code word W_k’And W_k’The channel matrix H on each Physical Resource Block on the subband acted on_j, determine each W of streams of code words 1_k And W_kThe channel matrix H on each Physical Resource Block on the subband acted on_jChannel quality, and by above-mentioned streams of code words 1 Each W_kAnd W_kThe channel matrix H on each Physical Resource Block on the subband acted on_jChannel quality be merged into a CQI_1, Wherein, k=1 ..., K ', K are the code word number of the code word group of above-mentioned selection, and K ' is the code word number after merging, and N is positive integer, J=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

In the case where channel order is more than 1, in addition to：

Above-mentioned terminal is using K code word linear combining in each code book group of N number of code word group of above-mentioned selection into the individual code word Ws of K '_k’ And W_k’The channel matrix H on each Physical Resource Block on the subband acted on_j, determine each W of streams of code words 2_kAnd W_kInstitute The channel matrix H on each Physical Resource Block on the subband of effect_jChannel quality, and by each W of above-mentioned streams of code words 2_k And W_kThe channel matrix H on each Physical Resource Block on the subband acted on_jChannel quality be merged into a CQI_2,Wherein, K=1 ..., K ', K is the code word number of the code word group of above-mentioned selection, and K ' is the code word number after merging, and N is just whole Number,_,J=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

In method 3, the method that K code word is divided into the individual code words of K ' is included：By i in K code word₂It is identical, i₁Different codes Word does linear combining and obtains W_k’, or by i₂It is identical, i₁₁Or i₁₂Different code words does linear combining and obtains W_k’, or by i₂ Or i₁₂At least one is identical, but i₁₁Different code words does the code word W after linear combining is merged_k’, or by i₂Or i₁₁At least one It is individual identical, but i₁₂Different code words does the code word W after linear combining is merged_k’, k '=1 ..., K ', wherein, K is above-mentioned choosing The code word number for the code word group selected, K ' is the code word number after merging.

Method 4：Above-mentioned terminal utilizes a code word W of N number of code word group of above-mentioned selection_kAnd W_kOne on subband acted on Channel matrix H on individual Physical Resource Block_j, determine the above-mentioned code word W of streams of code words 1_kAbove-mentioned physics on the subband acted on code word Channel matrix H on resource block_jChannel quality, and and above-mentioned channel quality is merged into a CQI₁, wherein, k=1 ..., K_t,, K_t, it is the code word number of N number of code word group, j=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is just whole Number.

In the case where channel order is more than 1, in addition to：

Above-mentioned terminal utilizes a code word W of N number of code word group of above-mentioned selection_kAnd W_kPhysics money on the subband acted on Channel matrix H in source block_j, determine the above-mentioned code word W of streams of code words 2_kOn above-mentioned Physical Resource Block on the subband acted on code word Channel matrix H_jChannel quality, and above-mentioned channel quality is merged into a CQI₂, wherein, k=1 ..., K_t,,K_t, it is N number of The code word number of code word group, j=1 ..., N_PRB, N_PRBThe number of the Physical Resource Block taken for a son, is positive integer.

Wherein, above-mentioned subband refers to the frequency domain resource of whole bandwidth is divided into wireless system into N_WBlock, if each subband includes Dry Physical Resource Block, such as PRB (Physical Resource Block, PRB), the PRB that each subband includes here Can be with unequal, N_WFor positive integer.

In method 4, also relate to the code word W in code word group_kTo channel matrix H_jThe process of mapping, i.e., for each H_j It is required for from the code word in N number of code word group selecting a code word W_kIt is matching to calculate CQI, wherein the method selected includes But it is not limited to the code word of CQI maximums calculated.

For base station：

(B1) packet mode arranged according to base station and terminal, is grouped to code book, and the signaling CodebookGroup of packet, Terminal is sent to by high-rise or physical layer signaling.Code book is grouped according to CodebookGroup values, group technology Such as the present embodiment end step (A1) description, it is described again here.

(B2) base station receives N number of code word group index of user feedback, and code book is divided according to N number of code word group index and base station Group, finds code word of all K*N code words of the N number of code word group of correspondence selected by base station, wherein, N is less than above-mentioned M just Integer.

Certainly, what base station was received is probably the index of N number of code word group correspondence code word of user feedback.Base station is according to the N of reception The index of individual code word group correspondence code word determines that the mode of selected code word includes but is not limited to the mode that code book is identified below：

For the ease of description, it is assumed here that the corresponding index value of a code word group in the N number of code word group received is as follows, In 1D code words, i₁=k, i₂=m, in 2D code words, i₁₁=k, i₁₂=n, i₂=m, wherein k belong to 0<=k<L₁Integer, n belongs to 0<=n<L2 integer, m belongs to 0<=m<L₃Integer.

Determine code word mode 1：Receive 1 i₁, it is mainly used in L in 1D code words₁=N₁₁, and L3=₁Situation, according to i₁=k It is index set { i to find the codeword set of jth=k group code word groups₁,i₂|i₁=k, i₂∈ { 0~M₁- 1 } } corresponding all K codes Word is selected code word.

Determine code word mode 2：Receive 1 i₁With at least one i₂, it is mainly used in L1=N in 1D code words₁₁, and L₃>1 feelings Condition, according to i₁=k, for each i₂=m finds jth=k*L₃The codeword set of+m group code word groups is gathered for index {i₁,i₂|i₁=k, i₂∈C_3mCorresponding all K code words.Each i₂Corresponding K code word is used as selected code word.

Determine code word mode 3：Feedback is more than 1 i₁, it is mainly used in L in 1D code words₁<N₁₁, and L₃=1 situation, for appointing What i₁=k, it is index set { i to find the codeword set of jth=k group code word groups₁,i₂|i₁=C_1k,i₂∈ { 0~M₁- 1 } } correspondence All K code words.Each i₁Corresponding K code word is used as selected code word.

Determine code word mode 4：Feedback is more than 1 i₁With at least one i₂, it is mainly used in L in 1D code words₁<N₁₁, and L₃>1 Situation, for any one i₁=k, and any one i₂=m, finds jth=k*L₃The codeword set of+m group code word groups is index Gather { i₁,i₂|i₁=C_1k,i₂∈C_3mCorresponding all K code words.Each i₁With each i₂Corresponding K code word is used as institute The code word of choosing.

Determine code word mode 5：Feed back 1 i₁₁With 1 i₁₂, it is mainly used in L in 2D code words₁=N₁₁, L₂=N₁₂And L₃=1 Situation, for i₁₁=k, i₁₂=n, finds j=k*L₂+ n code word groups for index set {i₁₁,i₁₂,i₂|i₁₁=k, i₁₂=n, i₂∈ { 0~M₁- 1 } } corresponding all K code words are selected code word.

Determine code word mode 6：Feed back 1 i₁₁With 1 i₁₂With at least one i₂, it is mainly used in L in 2D code words₁=N₁₁, L₂=N₁₂ And L₃>1 situation, for i₁₁=k, i₁₂=n, and any one i₂=m finds j=k*L₂*L₃+n*L₃+ m code word groups for index Gather { i₁₁,i₁₂,i₂|i₁₁=k, i₁₂=n, i₂∈C_3mCorresponding all K code words, each i₂Corresponding K code word conduct Selected code word.

Determine code word mode 7：Feed back 1 i₁₁With at least one i₁₂With at least one i₂, it is mainly used in L in 2D code words₁=N₁₁, L₂<N₁₂And L₃>1 situation, for i₁₁=k, any one i₁₂=n, any one i₂=m finds j=k*L₂*L₃+n*L₃+ m codes Word group for index set { i₁₁,i₁₂,i₂|i₁₁=k, i₁₂=C_2n,i₂∈C_3mCorresponding all K code words, each i₁₂With it is each i₂Corresponding K code word is used as selected code word.

Determine code word mode 8：Feed back 1 i₁₂With at least one i₁₁With at least one i₂, it is mainly used in L in 2D code words₂=N₁₂, L₁<N₁₁And L₃>1 situation, for i₁₂=n, any one i₁₁=k, any one i₂=m finds j=k*L₂*L₃+n*L₃+ m codes Word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=n, i₂∈C_3mCorresponding all K code words, each i₁₁With it is every Individual i₂Corresponding K code word is used as selected code word.

Determine code word mode 9：Feed back at least one i₁₁And/or at least one i₁₂And/or at least one i₂, it is mainly used in 2D code words Middle L₂<N₁₂, L₁<N₁₁And L₃>1 situation, for any one i₁₁=k, any one i₁₂=n, any one i₂=m is found J=k*L₂*L₃+n*L₃+ m code word groups for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,i₁₂=C_2n,i₂∈C_3mCorresponding all K Individual code word, each i₁₁, each i₁₂K code word corresponding with each i2 is used as selected code word..

(B3) precoding is carried out to sent signal with above-mentioned N*K selected code words, and sends prelisting after precoding Code signal.Wherein precoded signal includes pre-coded data signal and/or precoding pilot signals and/or precoding ePDCCH letters Number.

It is of course also possible to carry out linear combining to N*K above-mentioned code word, the individual code words of N*K ' are formed.The rule of its linear combining It is by i2 in every group of code book is identical, and code words different i1 does one new code word of average formation, such as the step in embodiment 1 Suddenly in the mode 3 in (A1), for any one i in any group of code word₂, there is L₁Individual i₁Different code words, will be above-mentioned Code word do and average form new code word.Or i₂It is identical, i₁₁And/or i₁₂Different code words averagely forms a new code word.

It is grouped before precoding is carried out to sent signal, in addition to the resource units RE for carrying signal to be sent, It is divided into the N number of RE groups REG of K*N or K ' *, one pre-coding matrix of each REG correspondences.Wherein RE is LTE/LTE A The unit of middle minimum bearing modulation symbols, includes an OFDM/OFDMA symbol of a subcarrier, wherein OFDM is just Frequency division multiplexing is handed over, OFDMA is OFDM.Each REG groups use an independent above-mentioned code word.

(B4) base station preferably, can also receive the CQI of user feedback, and determine the tune that data are sent according to the CQI of feedback Coded system MCS processed, and channel coding etc. is carried out to data according to the corresponding modulation coding mode of MCS grades.

It should be noted that base station can also voluntarily determine selected N code words group and code in the present embodiment step (B2) N*K code word in word group is used as selected code word.And need code word group index or the corresponding codewords indexes of code word group to pass through High-level signaling is allocated to terminal.

Preferred embodiment 2:Based on N₁And/or N₂Value code book is grouped

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is according to the first dimension port Number N₁And/or the second dimension port number N₂Parameter code book is grouped, N number of code word group is selected according to channel matrix H, and The index or the corresponding codewords indexes of code word group of N number of code word group are fed back to base station.Base station receives code word group index or code word group Corresponding codewords indexes determine N*K selected code words.And selected code word is done to sent signal and sent after precoding processing Go out, its process is as follows：

For terminal：

(A1) terminal is according to the first dimension port number N₁And/or the second dimension port number N₂Value is grouped to code book, packet Under method

As the first dimension port number N₁=the 1 and second dimension port number N₂>=4, or the first dimension port number N₁>=4 and second dimension Spend port number N₂When=1, code book is grouped by the 1D code word packet modes of the step of embodiment 1 (A1), such as mode 1~ Mode 4 is grouped.First dimension port number N₁=the 1 and second dimension port number N₂<4, or the first dimension port number N₁<4 and Second dimension port number N₂Each code word is individually for L in one group, i.e. mode 2 when=1₁=N₁₁, L₂=M₁Situation.In N₁>=2 And N₂>=2 situation is grouped by the 2D code word packet modes of step (A1) in embodiment 1 to code book, such as mode 5~ Mode 9 is grouped, and is not described in detail.

(A2) terminal receives CSI-RS pilot signals, and estimates channel H according to pilot signal, is selected according to H with H most N number of code word group of matching, including signal to noise ratio are maximized, and letter is dried than methods such as maximums to select code word group, and feeds back above-mentioned N The index of individual code word group, wherein, N is the positive integer less than above-mentioned M.

Certainly, terminal can not also feed back above-mentioned code word group index, and feed back the index of the code word group inner code word of selection, including Following situation：

For N₁>=4 and N₂=1, or N₁=1 and N₂>The feedback system 1 of the step of=4 situation presses embodiment 1 (A2)~ The index of the method feedback code group inner code word of feedback system 4.In N₁<4 and N2=1, or N₁=1 and N₂<In the case of 4, A code word i can be fed back₁With an i₂.For N₁>=2 and N₂>The feedback of the step of=2 situation presses embodiment 1 (A2) The index of the method feedback code group inner code word of 5~feedback system of mode 9.

Wherein, N is positive integer, and this step is preferred step, and terminal can be without CQI feedback.If feeding back CQI, The method that the step of wherein CQI computational methods embodiment 1 (A3) calculates CQI is the same, is described again here.

For base station：

(B1) base station is according to the first dimension port number N₁And/or the second dimension port number N₂Value code book is grouped, point Prescription method is described again here as the present embodiment end step (A1) is described.

(B2) base station receives N number of code word group index of user feedback, and is walked according to N number of code word group index and the present embodiment base station Suddenly the code word group that (B1) above-mentioned code book packet mode is obtained, all K*N code words for finding the N number of code word group of correspondence are base station Selected code word, wherein, N is the positive integer less than above-mentioned M.

Certainly, what base station was received is probably the index of N number of code word group correspondence code word of user feedback.Base station is according to the N number of of reception The index of code word group correspondence code word determines the method for selected code word such as the step of embodiment 1 as (B2), according to different ropes Draw number to carry out respectively.

Such as N₁>=4 and N₂=1, or N₁=1 and N₂>The determination code of the step of=4 situation presses embodiment 1 (B2) Word mode 1~determine that the method for code word mode 4 determines selected code word.In N₁<4 and N₂=1, or N₁=1 and N₂<4 feelings Under condition, the mode as traditional LTE system is handled.For N₁>=2 and N₂>The step of=2 situation presses embodiment 1 (B2) Really the method for constant bit word mode 5~determine code word mode 9 determines selected code word.

It is of course also possible to carry out linear combining to N*K above-mentioned code word, the individual code words of N*K ' are formed.The rule of its linear combining It is by by i in every group of code book₂It is identical, i₁Different code words is one new code word of average formation, or i₂It is identical, i₁₁And/or i₁₂Different code words averagely forms a new code word.

It is grouped before precoding is carried out to sent signal, in addition to the resource units RE for carrying signal to be sent, It is divided into the N number of RE groups REG of K*N or K ' *, one pre-coding matrix of each REG correspondences.

Preferred embodiment 3:O₁And/or O₂Code book is grouped

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is crossed according to the first dimension and adopted Like factor O₁And/or the second dimension oversample factor O₂Parameter code book is grouped, N number of code is selected according to channel matrix H Word group, and the index or the corresponding codewords indexes of code word group of N number of code word group are fed back to base station.Base station receive code word group index or The corresponding codewords indexes of person's code word group determine N*K selected code words.And selected code word is done at precoding to sent signal Sent after reason, its process is as follows：

(A1) terminal is according to the first dimension oversample factor O₁And/or the second dimension oversample factor O₂Parameter value enters to code book Under row packet, group technology

Work as O₁<First dimension port number N₁Or O₂<Second dimension port number N₂, O in other words₁Or O₂In there is one to be less than or equal to When 1, code book is grouped by the 1D code word packet modes of the step of embodiment 1 (A1), such as 1~mode of mode 4 is divided Group.O₁>=4 and O₂>When=4, code book is grouped by the 2D code word packet modes of step (A1) in embodiment 1, than Such as 5~mode of mode 9 is grouped, and is not described in detail.

Work as O₁<First dimension port number N₁Or O₂<Second dimension port number N₂, O in other words₁Or O₂In there is one to be less than or equal to When 1, by the index of the method feedback code group inner code word of the 1~feedback system of feedback system 4 of (A2) the step of embodiment 1. O₁>=4 and O₂>When=4, in the method feedback code group by the 5~feedback system of feedback system 9 of (A2) the step of embodiment 1 The index of code word.

For base station：

(B1) base station is according to the first dimension oversample factor O₁And/or the second dimension oversample factor O₂Parameter value enters to code book Row packet, group technology is described again here as the present embodiment end step (A1) is described.

Work as O₁<First dimension port number N₁Or O₂<Second dimension port number N₂, O in other words₁Or O₂In there is one to be less than or equal to When 1, selected code word is determined by the method for (B2) the step of embodiment 1 constant bit word mode 1~determine code word mode 4 really. O₁>=4 and O₂>When=4, determined by the method for (B2) the step of embodiment 1 constant bit word mode 5~determine code word mode 9 really Selected code word.

It is of course also possible to carry out linear combining to N*K above-mentioned code word, the individual code words of N*K ' are formed.The rule of its linear combining It is by i2 in every group of code book is identical, and code words different i1 does one new code word of average formation.Or i₂It is identical, i₁₁With/ Or i₁₂Different code words averagely forms a new code word.

Preferred embodiment 4:Code book is grouped according to codebook subset option and installment signaling

In LTE version 13, the code book of design typically compares due to including the DFT vectors of two dimensions, number of codewords Many, this can increase the expense of feedback, in order to reduce expense, by code book according to codebook subset option and installment signaling (Codebook Config) It is divided into different subclass, the different code word of different codebook subset configuration signal (CodebookConfig) correspondences.Wherein for same One i₁₁And i₁₂Under, during Codebook Config=1, i2 code words only have 4 code words of co-phase Selecting phasings, and CodebookConfig>When 1, i2 includes 16 code words such as co-phase Selecting phasings and beam selections.

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is configured according to codebook subset Signaling CodebookConfig parameter is grouped to code book, selects N number of code word group according to channel matrix H, and feed back N The index or the corresponding codewords indexes of code word group of individual code word group are to base station.Base station receives code word group index or code word group is corresponding Codewords indexes determine N*K selected code words.And selected code word is done to sent signal and sent after precoding processing, Its process is as follows：

(A1) terminal is grouped according to codebook subset configuration signal CodebookConfig parameter values to code book, group technology Under

As codebook subset configuration signal CodebookConfig=1, by the 2D code words packet side of step (A1) in embodiment 1 Formula 5 is grouped to code book, and CodebookConfig>When 1, by the 2D code words packet side of step (A1) in embodiment 1 6~9 pairs of code books of formula are grouped, when being not described in detail.

Certainly, terminal can not also feed back above-mentioned code word group index, and feed back the index of the code word group inner code word of selection, bag Include following situation：

As codebook subset configuration signal CodebookConfig=1, by the side of the feedback system 5 of (A2) the step of embodiment 1 The index of method feedback code group inner code word, and CodebookConfig>When 1, by the feedback system of (A2) the step of embodiment 1 The index of the method feedback code group inner code word of 6~feedback system 9.

For base station：

(B1) base station is grouped according to codebook subset configuration signal CodebookConfig parameters to code book, group technology and sheet As embodiment end step (A1) description, it is described again here.

As CodebookConfig=1, determined by the method for (B2) the step of embodiment 1 constant bit word mode 5 really selected Code word.CodebookConfig>When 1, by (B2) the step of embodiment 1 constant bit word mode 6~determine code word mode 9 really Method determines selected code word.

It is of course also possible to carry out linear combining to N*K above-mentioned code word, the individual code words of N*K ' are formed.The rule of its linear combining It is by by i in every group of code book₂It is identical, i₁Different code words does one new code word of average formation.Or i₂It is identical, i₁₁And/or i₁₂Different code words averagely forms a new code word.

Preferred embodiment 5:Code book is grouped according to the configuration signal of channel sequence

Information feedback includes：Channel quality indication (CQI) information (Channel quality indication, referred to as CQI), Precoding matrix indicators (Precoding Matrix Indicator, referred to as PMI) and order designator (Rank Indicator, letter Referred to as RI).RI is used for the number for describing space independent channel, and the order of respective channels response matrix also has referred to as channel sequence, or The number of plies of person's data transfer, its value is equal with the columns of used code word, and channel sequence mentioned here is also included but not It is limited to data transfer layer number, data transmission stream number, data flow number, data Layer number, channel Rank, RI, order, etc. Concept.For convenience of description, collectively referred to here in as channel sequence, is represented with RI.

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is according to the parameter of channel sequence Code book is grouped, above-mentioned channel sequence selects N number of code word group according to channel matrix H, and feed back N number of code word group index or The corresponding codewords indexes of person's code word group are to base station.Base station receives code word group index or the corresponding codewords indexes of code word group determine N*K Individual selected code word.And selected code word is done to sent signal and sent after precoding processing, its process is as follows：

(A1) terminal is grouped according to channel sequence parameter value to code book, under group technology

In the code book of 1D double structures, RI<During Tr, by 2~mode of 1D code word packet modes 4 of the step of embodiment 1 (A1) It is grouped；RI>It is grouped during=Tr by the 1D code words packet mode 1 of the step of embodiment 1 (A1).In 2D double structures Code book in, RI<During Tr, it is grouped by 6~mode of 2D code word packet modes 9 of step (A1) in embodiment 1, RI>=Tr When, it is grouped by the 2D code words packet mode 5 of step (A1) in embodiment 1, wherein, Tr is the positive integer more than 1, It is not described in detail.

In the code book of 1D double structures, RI<During Tr, by the 2~feedback system of feedback system 4 of (A2) the step of embodiment 1 The index of method feedback code group inner code word；RI>During=Tr, the method by the feedback system 1 of (A2) the step of embodiment 1 is anti- Present the index of code word group inner code word.In the code book of 2D double structures, RI<During Tr, by the feedback of (A2) the step of embodiment 1 The index of the method feedback code group inner code word of 6~feedback system of mode 9, RI>During=Tr, by (A2) the step of embodiment 1 The index of the method feedback code group inner code word of feedback system 5, wherein, Tr is the positive integer more than 1, is not described in detail.

For base station：

(B1) base station is grouped according to channel sequence parameter value to code book, group technology and the present embodiment end step (A1) As description, it is described again here.

In the code book of 1D double structures, RI<During Tr, by (B2) the step of embodiment 1 constant bit word mode 2~determine code word really The method of mode 4 determines to say the code word of selection；RI>During=Tr, by (B2) the step of embodiment 1 constant bit word mode 1 really Method determines to say the code word of selection.In the code book of 2D double structures, RI<During Tr, by the determination of (B2) the step of embodiment 1 Code word mode 6~determine that the method for code word mode 9 determines to say the code word of selection, RI>During=Tr, by (B2) the step of embodiment 1 Really the method for constant bit word mode 1~determine code word mode 5 determines to say the code word of selection, wherein, Tr is the positive integer more than 1, It is not described in detail.

Preferred embodiment 6:Code book is grouped according to the parameter of transmission mode

In LTE, transmission mode includes 1~transmission mode of transmission mode 10, and arq mode 1 is single antenna, and transmission mode 2 is Space-frequency diversity, transmission mode 3 is Open-Loop Spatial Multiplexing or is open loop MIMO techniques, and transmission mode 4 is Closed-Loop Spatial Multiplexing, Transmission mode 5 is multiuser MIMO, and transmission mode 6 is the Closed-Loop Spatial Multiplexing of single data stream, and transmission mode 7 and 8 is distinguished For single current and dual-stream beamforming, and transmission mode 9 supports maximum 8 layers spatial reuse, and can realize and work as user and multi-user Adaptive switching, the adaptive switching of the data number of plies supports open loop MIMO and closed-loop MIMO pattern.Transmission mode 10 It is used primarily in the multi-antenna technology of multi-base station cooperative.Every kind of transmission mode has its corresponding MIMO mode and downlink transfer Signaling.

Pre-coding matrix index disabling (Precoding Matrix Indicator disabling, PMI disabling) refers to how defeated Enter in multiple output system, whether UE reports MIMO precoding to index when reporting CSI, such as in Open-Loop Spatial Multiplexing, Space diversity, either TDD the field that in the scene of down channel or feedback model is X-0 is obtained using up channel reciprocity UE feedback PMI are not needed in scape, so as to carry out PMI disabling enables, so as to save feedback overhead.

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal according to transmission mode and/or PMI disabling parameter is grouped to code book, and above-mentioned channel sequence selects N number of code word group according to channel matrix H, and feeds back The index or the corresponding codewords indexes of code word group of N number of code word group are to base station.Base station receives code word group index or code word group is corresponding Codewords indexes determine N*K selected code words.And selected code word is done to sent signal and sent after precoding processing, Its process is as follows：

(A1) terminal is grouped according to transmission mode parameter and/or PMI disabling values to code book, under group technology

When it is TM9 and TM10 and/or PMI disabling=ture to pass digital modeling, in the code book of 1D double structures, by implementation 1~mode of 1D code word packet modes 4 of the step of example 1 (A1) is grouped；In the code book of 2D double structures, by embodiment 1 5~mode of 2D code word packet modes 9 of middle step (A1) carries out packet and is not described in detail, and otherwise each code word is defined as one Individual group.

When it is TM9 and TM10 and/or PMI disabling=ture to pass digital modeling, in the code book of 1D double structures, by implementation The index of the method feedback code group inner code word of 1~feedback system of feedback system 4 of the step of example 1 (A2)；In 2D double structures Code book in, by the rope of the method feedback code group inner code word of the 5~feedback system of feedback system 9 of (A2) the step of embodiment 1 Draw, otherwise handled by traditional LTE/LTE A systems, feed back an i₁And i₂, or 1 i of feedback₁₁, 1 i₁₂, 1 i₂。

For base station：

(B1) base station is grouped according to transmission mode parameter value and/or PMI disabling to code book, group technology and this reality Apply as an end step (A1) description, be described again here.

When it is TM9 and TM10 and/or PMI disabling=ture to pass digital modeling, in the code book of 1D double structures, by implementation The step of example 1 (B2), the method for constant bit word mode 1~determine code word mode 4 determined to say the code word of selection really；In 2D binodes In the code book of structure, by (B2) the step of embodiment 1, the method for constant bit word mode 5~determine code word mode 9 determines to say selection really Code word, otherwise handled by traditional LTE/LTE A systems.

Preferred embodiment 7:Code book is grouped according to the parameter of feedback model

Terminal CSI feedback is primarily present two ways：Base station can be measured and be quantified to channel information with configurating terminal, and By Physical Uplink Control Channel Physical Uplink Control Channel (PUCCH) to the CSI information of quantization (including RI/PMI/CQI) periodically fed back.Base station can also when needed, and acyclic unexpected triggering terminal carries out CSI Information (including RI/PMI/CQI's) reports, its main physically row shared channel Physical Uplink Shared CHannel (PUSCH).To overcome periodic feedback real-time not high enough, the problem of CSI quantified precisions are limited to control channel expense.Its In, non-periodic feedback is transmitted in PUSCH, including following pattern：

Periodic feedback pattern refers to that in the pattern fed back periodically in PUCCH it includes following pattern

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is according to the ginseng of feedback model Several that code book is grouped, above-mentioned channel sequence selects N number of code word group according to channel matrix H, and feeds back the index of N number of code word group Or the corresponding codewords indexes of code word group are to base station.Base station receives code word group index or the corresponding codewords indexes of code word group determine N*K Individual selected code word.And selected code word is done to sent signal and sent after precoding processing, its process is as follows：

(A1) terminal is grouped according to feedback model parameter value to code book, under group technology

It is PUSCH3-1,1-2,2-2 in feedback model, during 3-2, in the code book of 1D double structures, by the step of embodiment 1 (A1) 1~mode of 1D code word packet modes 4 be grouped；In the code book of 2D double structures, by step (A1) in embodiment 1 5~mode of 2D code word packet modes 9 carries out packet and is not described in detail；

It is PUCCH1-1 in feedback model, during 2-1, in the code book of 1D double structures, by the 1D of the step of embodiment 1 (A1) 1~mode of code word packet mode 2 is grouped；In the code book of 2D double structures, by the 2D of step (A1) in embodiment 1 5~mode of code word packet mode 6 carries out packet and is not described in detail；

Otherwise each code word is defined as a group otherwise each code word is defined as a group.

It is PUSCH3-1,1-2,2-2 in feedback model, during 3-2, in the code book of 1D double structures, by (A2) the step of embodiment 1 1~feedback system of feedback system 4 method feedback code group inner code word index；In the code book of 2D double structures, by implementation The index of the method feedback code group inner code word of 5~feedback system of feedback system 9 of the step of example 1 (A2)；

Feedback model be PUCCH1-1, during 2-1, in the code book of 1D double structures, by the step of embodiment 1 (A2) it is anti- The index of the method feedback code group inner code word of 1~feedback system of feedback mode 2；In the code book of 2D double structures, by embodiment 1 The step of (A2) 5~feedback system of feedback system 6 method feedback code group inner code word index；

Otherwise handled by traditional LTE/LTE A systems, feed back an i₁And i₂, or 1 i of feedback₁₁, 1 i₁₂, 1 i₂。

For base station：

(B1) base station is grouped according to feedback model parameter value to code book, group technology and the present embodiment end step (A1) As description, it is described again here.

It is PUSCH3-1,1-2,2-2 in feedback model, during 3-2, in the code book of 1D double structures, by (B2) the step of embodiment 1 Really the method for constant bit word mode 1~determine code word mode 4 determines to say the code word of selection；In the code book of 2D double structures, by reality Really the method for constant bit word mode 5~determine code word mode 9 determines to say the code word of selection the step of applying example 1 (B2)；

It is PUCCH1-1 in feedback model, during 2-1, in the code book of 1D double structures, by (B2) the step of embodiment 1 really Constant bit word mode 1~determine that the method for code word mode 2 determines to say the code word of selection；In the code book of 2D double structures, by embodiment 1 The step of (B2) method of constant bit word mode 5~determine code word mode 6 determines to say the code word of selection really；

Otherwise handled by traditional LTE/LTE A systems.

Preferred embodiment 8:Code book is grouped according to the parameter of CSI feedback classification

Base station and terminal are impliedly grouped with terminal according to some parameters to code book.Here, terminal is according to CSI feedback classification Parameter code book is grouped, above-mentioned channel sequence selects N number of code word group according to channel matrix H, and feeds back N number of code word group Index or the corresponding codewords indexes of code word group are to base station.Base station receives code word group index or the corresponding codewords indexes of code word group are true Determine N*K selected code words.And selected code word is done to sent signal and sent after precoding processing, its process is as follows：

(A1) terminal is grouped according to CSI feedback classification parameter value to code book, under group technology

When CSI feedback classification is Class A, in the code book of 1D double structures, by the 1D codes of the step of embodiment 1 (A1) 1~mode of word packet mode 4 is grouped；In the code book of 2D double structures, by the 2D code words of step (A1) in embodiment 1 5~mode of packet mode 9 carries out packet and is not described in detail；When CSI feedback classification is Class B, each code word is defined as one Individual group otherwise each code word be defined as a group.

When CSI feedback classification is Class A, in the code book of 1D double structures, by the feedback of (A2) the step of embodiment 1 The index of the method feedback code group inner code word of 1~feedback system of mode 4；In the code book of 2D double structures, by embodiment 1 The index of the method feedback code group inner code word of 5~feedback system of feedback system 9 of step (A2)；It is in CSI feedback classification During Class B, handled by traditional LTE/LTE A systems, feed back an i₁And i_2,Or 1 i of feedback₁₁, 1 i₁₂, 1 i₂。

For base station：

(B1) base station is grouped according to CSI feedback classification parameter value to code book, group technology and the present embodiment end step (A1) as describing, it is described again here.

When CSI feedback classification is Class A, in the code book of 1D double structures, by the determination of (B2) the step of embodiment 1 Code word mode 1~determine that the method for code word mode 4 determines to say the code word of selection；In the code book of 2D double structures, by embodiment 1 The step of (B2) method of constant bit word mode 5~determine code word mode 9 determines to say the code word of selection really；In CSI feedback classification During for Class B, handled by traditional LTE/LTE A systems.

Preferred embodiment 9:User itself determines code word packet parameters and fed back

The method that base station and terminal arrange a code book packet, and with an every kind of possibility of signaling CodebookGroup denoting signalings Group technology.CodebookGroup signalings take different values to represent different group technologies, and terminal determines code according to channel information The method of word packet, and the corresponding CodebookGroup of method of above-mentioned code word packet is fed back to base station.Transmission CodebookGroup signaling can be based on PUCCH feedback, or PUSCH feedbacks or high-rise letter Order.Terminal determines the method that code word is grouped according to channel information, and code book is grouped, and code word is selected according to channel matrix H Group, and feedback code group index or the corresponding codewords indexes of code word group to base station.Base station receives the code word packet of user feedback Signaling, determines the method for code word packet, and code word is grouped with this method, with the code word group index or code of user feedback The corresponding codewords indexes of word group determine pre-coding matrix.And transmission after precoding processing is done to sent signal to pre-coding matrix Go out, its process is as follows：

Here, terminal is grouped according to the parameter of channel information translational speed or Doppler shift to code book, wherein translational speed v It is that f is that user obtains according to channel condition measurement with Doppler shift size, but it should be recognized that user can also be with other Channel information, such as channel matrix H etc. determines code word packet.User determined after packet mode by signaling feedback to base station, Base station is grouped using the corresponding packet mode of above-mentioned signaling to code word.Above-mentioned channel sequence selects N number of code according to channel matrix H Word group, and the index or the corresponding codewords indexes of code word group of N number of code word group are fed back to base station.Base station receive code word group index or The corresponding codewords indexes of person's code word group determine N*K selected code words.And selected code word is done at precoding to sent signal Sent after reason, its process is as follows：

(A1) terminal is grouped according to translational speed or Doppler shift value to code book, under group technology

In translational speed v<Tv1 or Doppler shift f<During Tf1, by the 1D code words packet mode 1 of the step of embodiment 1 (A1) Or mode 5 is grouped to code word,；

In translational speed Tv1<=v<Tv2 or Doppler shift Tf1<=f<During Tf2, embodiment 1 is pressed in 1D double structure code books 1~mode of 1D code word packet modes 4 of step (A1) is grouped；In the code book of 2D double structures, walked by embodiment 1 Suddenly 5~the mode of 2D code word packet modes 9 of (A1) is grouped；

In translational speed v>Tv2 or Doppler shift>During Tf2, the step of embodiment 1 (A1) is pressed in 1D double structure code books 1D code words packet mode 3 be grouped；In the code book of 2D double structures, by the 2D codes of step (A1) in embodiment 1 Word packet mode 9 and L3=1 mode are grouped；

Wherein, 0<Tf1<=f<Tf2,0<Tv1<=f<Tv2.

Preferably, above-mentioned code word packet signaling CodebookGroup value 1~9 corresponds to above-mentioned code word packet mode respectively 1~code word packet mode 9.

Certainly, terminal can not also feed back above-mentioned code word group index, and feed back the index of the code word group inner code word of selection, including Following situation：The feedback system 1 of the step of embodiment 1 is pressed according to code word packet scheme CodebookGroup selections (A2)~anti- The index of the method feedback code group inner code word of feedback mode 9；

(A4) code word that terminal is determined by the signaling feedback of physical layer or high level according to channel information is grouped scheme CodebookGroup

Physical layer signaling said herein signaling including PUCCH's or PUSCH's.

For base station：

(B1) base station receives the code word packet scheme signaling CodebookGroup of user feedback, and with the corresponding side of above-mentioned signaling Method is grouped to code book, and group technology is described again here as the present embodiment end step (A1) is described.

Certainly, what base station was received is probably the index of N number of code word group correspondence code word of user feedback.Base station is according to the N number of of reception The index of code word group correspondence code word determines that the method for selected code word as (B2), is grouped such as the step of embodiment 1 according to code word Code word mode 1~determine code word mode 9 is determined in mode signaling CodebookGroup different selection examples 1 respectively in (B2) Mode carry out.

It is grouped before precoding is carried out to sent signal, in addition to the resource units RE for carrying signal to be sent, It is divided into K*N or K ' × N number of RE groups REG, one pre-coding matrix of each REG correspondences.

In another embodiment, a kind of software is additionally provided, the software is used to perform above-described embodiment and preferred embodiment Described in technical scheme.

In another embodiment, a kind of storage medium is additionally provided, be stored with above-mentioned software in the storage medium, the storage Medium includes but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..

It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. is to use In distinguishing similar object, without for describing specific order or precedence.It should be appreciated that the object so used is suitable Can be exchanged in the case of, so as to embodiments of the invention described herein can with except illustrate or describe herein those with Outer order is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive to be included, For example, the process, method, system, product or the equipment that contain series of steps or unit be not necessarily limited to clearly to list that A little steps or unit, but may include not list clearly or for intrinsic its of these processes, method, product or equipment Its step or unit.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can use general calculating Device realizes that they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted, Alternatively, they can be realized with the executable program code of computing device, it is thus possible to be stored in storage device In performed by computing device, and in some cases, can be to perform shown or described step different from order herein Suddenly, they are either fabricated to each integrated circuit modules respectively or be fabricated to the multiple modules or step in them single Integrated circuit modules are realized.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art For, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, etc. With replacement, improvement etc., it should be included in the scope of the protection.

Claims

1. a kind of processing method of channel information, it is characterised in that including：

The code word included in code book is divided into M code word group by terminal, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M-1；

The terminal from the N number of code word group of the M code word group selection, and is fed back according to channel information and includes N number of code The configured information of the codewords indexes for the code word that the group index of word group or N number of code word group are included, wherein, N is small In M positive integer.

2. according to the method described in claim 1, it is characterised in that methods described also includes：

The terminal determines code word packet parameters.

3. according to the method described in claim 1, it is characterised in that the terminal determines that code word is grouped by one of at least following parameter Parameter：

First dimension port number N₁And/or the second dimension port number N₂；Codebook subset option and installment；First dimension over-sampling because Sub- O₁And/or the second dimension oversample factor O₂；The order of channel；Transmission mode；Pre-coding matrix instruction PMI, which is enabled, to be referred to Show information, order designator RI enable instructions；Channel condition information CSI feedback model；CSI feedback classification.

4. according to the method in claim 2 or 3, it is characterised in that the code word packet parameters include：

5. according to the method described in claim 1, it is characterised in that the code word number K of the M code word group_mK is equal to, its In, K is the positive integer more than 1.

6. according to the method described in claim 1, it is characterised in that the code word number K of the M code word group_m=a_m×K_m-1, wherein, a_mFor positive integer.

7. method according to claim 4, it is characterised in that the packet mode of the code word group, at least including one below:

8. method according to claim 7, it is characterised in that the packet mode of the code word group, including：

By the first code book W₁Index i₁It is divided into L₁Individual set C_1k, the second code book W₂Codewords indexes i₂It is divided into L₃It is individual Set C_3m, group index is j=k × L₃The codeword set of+m code word group is index set { i₁,i₂|i₁=C_1k,i₂∈C_3mRight All code words answered, the code word group number is M=L₁×L₃, the code word number is K_j=K_1k×K_3m, wherein, C_1k It is set { 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_3mIt is { 0,1 ... ..., M₁-1} A subset, C_3mThere is K_3mIndividual element, K_j, K_1k, K_3mAll it is positive integer, wherein, k=0 ..., L₁- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₃For M₁Approximate number, N₁₁And M₁Respectively the first code book index i₁Number and the second code book index i₂Number；And/or

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n ×L₃+ m code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, institute State code word group number M=L₁×L₂×L₃, the code word number of each code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1k It is set { 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂-1} A subset, C_2nThere is K_2nIndividual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIt is individual Element, K_j, K_1k, K_2n, K_3mAll it is positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂Approximate number, L₃For M₁Approximate number, N₁₁, N₁₂And M₁Respectively the first code book First dimension index index i₁₁Number, first the second dimension of code book index index i₁₂Number and the second code book index i₂'s Number.

9. method according to claim 8, it is characterised in that methods described also includes：

As the L₁=N₁₁, the L₃When=1, code book is divided into M code word group includes：I₁Identical but i₂Different institutes There is M₁Individual code word is divided into L₂Group, the M=N₁₁, each code word group has K=M₁Individual code word, i₂=0 ..., M₁- 1, L₂For M₁An approximate number；Or,

As the L₁<N₁₁, the L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×M₁Individual code Word presses i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₂ Group, the M=L_1×L₂, it is describedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁ Approximate number and more than 1, L₂For M₁An approximate number；Or,

As the L₁=N₁₁, the L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×N₁₂×M₁ Individual code word presses i₁₁It is divided into N₁₁Group, for any one i₁₁Corresponding code word group, then by i₁₂And/or i₂It is divided into L₂Group, often Group code word comes from identical i₁₁, but at least i₁₂And/or i₂Different code word compositions, the M=N₁₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₂Value be N₁₂× M₁An approximate number；Or,

As the L₁<N₁₁, the L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁It is divided into L₁Group, then by i₁₂ And/or i₂L₁Group code word is divided into L₂Group, every group of code word is from least two different i₁₁The i different with least two₁₂With / or i₂Code word composition, the M=L₁×L₂,i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁- 1, L₁Value be N₁₁Be more than 1 approximate number, L₂Value be N₁₂×M₁An approximate number；Or,

As the L₂=N₁₂, the L₃>When 0, by the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into N₁₂Group, by i₁₁ And/or i₂N₁₂Group code word is divided into L₃Group, every group of code word is from 1 i₁₂, the i different with least two₁₁And/or i₂'s Code word is constituted, the M=N₁₂×L₃,i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₃For N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₂It is divided into L₁Group, by i₁₁And/or i₂L₁Group code word is divided into L₂Group, Every group of code word is from least two different i₁₂, the i different with least two₁₁And/or i₂Code word composition, the M=L₁ ×L₂,i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₂Approximate number and more than 1, L₂Value be N₁₁×M₁An approximate number；Or,

By the N of code book₁₁×N₁₂×M₁Individual code word presses i₁₁And i₁₂It is divided into L₁Group, by i₂L₁Group code word is divided into L₂Group, often Group code word is from least two different i₁₁And/or i₁₂, and at least two difference i₂Code word composition, the M=L₁×L₂,i₁₁=0,1 ... ..., N₁₁- 1, i₁₂=0,1 ... ..., N₁₂- 1, i₂=0,1 ... ..., M₁- 1, C₁Take It is worth for N₁₁×N₁₂The approximate number for being more than 1, K value is M₁An approximate number.

10. according to the method described in claim 1, it is characterised in that the group index that the terminal feeds back N number of code word group includes： Feed back N number of code word group corresponding group index j, wherein j=0 ..., M-1.

11. according to the method described in claim 1, it is characterised in that the terminal feeds back the code that N number of code word group includes code word Word indexing, including：

The terminal feeds back at least one i₁All or part of bit；Or

12. method according to claim 11, it is characterised in that

The i₁For the first code book W₁Codewords indexes, the i₁₁For the first code book W₁First dimension codewords indexes, the i₁₂ For the first code book W₁Second dimension codewords indexes, described i₂Second code book W₂Codewords indexes, wherein, i₁=0 ..., N₁₁- 1, i₁₁=0 ..., N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁-1。

13. method according to claim 11, it is characterised in that

The i₁For index group C_1kGroup index；The i₁₁For index group C_1kGroup index；The i₁₂For index group C_2n Group index；The i₂For index group C_3kGroup index, wherein, i₁=0 ..., L₁- 1, i₁₁=0 ..., L₁- 1, i₁₂=0 ..., L₂- 1, i₂=0 ..., L₃-1。

14. method according to claim 2, it is characterised in that the terminal determines code word packet parameters, and the terminal is according to letter Channel state information determines code word packet parameters, and feedback code packet signaling.

15. a kind of processing method of channel information, it is characterised in that including：

The code word included in code book is divided into M code word group by terminal, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M；

The terminal selects N number of code word group according to channel information from the M code word group, and according to N number of code word Code word in group determines channel quality information CQI, and feeds back the CQI of determination, wherein, N is the positive integer less than M.

16. method according to claim 15, it is characterised in that code word of the terminal in N number of code word group is determined Channel quality information CQI, including at least one of：

The terminal utilizes each code word W of N number of code word group of the selection_kAnd W_kEach thing on the subband acted on The channel matrix on resource block is managed, each physical resource on the subband that each code word of streams of code words 1 and code word are acted on is determined It is each on the channel quality of channel matrix on block, and the subband that each code word of the streams of code words 1 and code word are acted on The channel quality of channel matrix on Physical Resource Block is merged into a CQI₁, wherein, k=0 ..., K_t-1,K_t, it is N number of code word The code word number of group；

The terminal is merged into a code word W using the code word of each code word group of N number of code word group of the selection_kAnd W_k The channel matrix on each Physical Resource Block on the subband acted on, determines that each code word of streams of code words 1 and code word are acted on Subband on each Physical Resource Block on channel matrix channel quality, and by each code word of the streams of code words 1 and code The channel quality of the channel matrix on each Physical Resource Block on the subband that word is acted on is merged into a CQI₁, wherein, K=0 ..., N-1；

The terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’The channel matrix on each Physical Resource Block on the subband acted on, determines each code word of streams of code words 1 and code word institute The channel quality of the channel matrix on each Physical Resource Block on the subband of effect, and by each code word of the streams of code words 1 The channel quality of the channel matrix on each Physical Resource Block on the subband acted on code word is merged into a CQI₁, its In, k=0 ... ..., K ' -1, K is the code word number of the code word group of the selection, K ' is the code word number after merging, and N is just Integer；

The terminal utilizes a code word W of N number of code word group of the selection_kAnd W_kA thing on the subband acted on Manage the channel matrix H on resource block_j, determine code word W described in streams of code words 1_kThe physics on the subband acted on code word Channel matrix H on resource block_jChannel quality, and by code word W described in the streams of code words 1_kThe son acted on code word The channel matrix H on the Physical Resource Block taken_jChannel quality be merged into a CQI₁, wherein, k=1 ..., K_t-1, K_t, it is the code word number of N number of code word group, j=0 ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, And N_PRBFor positive integer.

17. method according to claim 15, it is characterised in that the terminal determines to believe according to the code word in the code word group of selection Road quality information CQI, including at least one of：

The terminal utilizes each on the subband that each code word W k and Wk of N number of code word group of the selection is acted on Channel matrix on Physical Resource Block, determines each physics money on the subband that each code word of streams of code words 2 and code word are acted on It is every on the channel quality of channel matrix in source block, and the subband that each code word of the streams of code words 2 and code word are acted on The channel quality of channel matrix on individual Physical Resource Block is merged into a CQI₂, wherein, k=0 ..., K_t-1,K_t, it is N number of code The code word number of word group；

The terminal is merged into code word W a k and Wk using the code word of each code word group of N number of code word group of the selection The channel matrix on each Physical Resource Block on the subband acted on, determines that each code word of streams of code words 2 and code word are acted on Subband on each Physical Resource Block on channel matrix channel quality, and by each code word of the streams of code words 2 and code The channel quality of the channel matrix on each Physical Resource Block on the subband that word is acted on is merged into a CQI₂, wherein, K=0,1 ... ..., N-1；

The terminal is by K code word linear combining of each code word group in N number of code word group into the individual code word Ws of K '_k’, and W_k’The channel matrix on each Physical Resource Block on the subband acted on, determines each code word of streams of code words 2 and code word institute The channel quality of the channel matrix on each Physical Resource Block on the subband of effect, and by each code word of the streams of code words 2 The channel quality of the channel matrix on each Physical Resource Block on the subband acted on code word is merged into a CQI₂, its In, k=0 ..., K ' -1, K is the code word number of the code word group of the selection, K ' is the code word number after merging, and N is just whole Number；

The terminal utilizes a code word W of N number of code word group of the selection_kAnd W_kA thing on the subband acted on Manage the channel matrix H on resource block_j, determine code word W described in streams of code words 2_kThe physics on the subband acted on code word Channel matrix H on resource block_jChannel quality, and by code word W described in the streams of code words 2_kThe son acted on code word The channel matrix H on the Physical Resource Block taken_jChannel quality be merged into a CQI₂, wherein, k=0 ..., K_t-1, K_t,For the code word number of N number of code word group, j=0 ..., N_PRB- 1, N_PRBThe number of the Physical Resource Block taken for a son, N_PRBFor positive integer.

18. the method according to claim 16 or 17, it is characterised in that linearly close K code word of each code word group And into the individual code word Ws of K '_k’Including：By i in K code word₂It is identical, i₁Different code words does linear combining and obtains W_k’, or By i₂It is identical, i₁₁Or i₁₂Different code words does linear combining and obtains W_k’, or by i₂Or i₁₂At least one is identical, but i₁₁ Different code words does the code word W after linear combining is merged_k’, or by i₂Or i₁₁At least one is identical, but i₁₂Different Code word does the code word W after linear combining is merged_k’, k '=1 ..., K ', wherein, K is the code word of the code word group of the selection Number, K ' is the code word number after merging.

19. a kind of processing method of channel information, it is characterised in that including：

The code word included in code book is divided into M code word group by base station, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, and m is the positive integer less than or equal to M, K_mFor the integer more than 1；

K in the group index for N number of code word group that the base station is fed back according to terminal or N number of code word group_mIndividual code word Codewords indexes, or, the code word rope of code word in the group index or the code word group of N number of code word group that the base station itself is determined Draw the code word that N number of code word group is obtained from the M code word group, wherein, N number of code word group is selected from the M code Word group, N is the positive integer less than M；

Precoding information is sent according to the obtained code word.

20. method according to claim 19, it is characterised in that methods described also includes：The base station determines code word packet ginseng Number, wherein, the base station determines code word packet parameters by one of at least following parameter：

21. method according to claim 19, it is characterised in that methods described also includes：The code word of base station receiving terminal feedback Signaling is grouped, and signaling is grouped according to the code word and determines that code word packet parameters, or base station determine the code word packet parameters.

22. method according to claim 20, it is characterised in that the code word packet parameters include：

The number M of code word group value, the code word number K of each code word group_mValue and code word group packet mode.

23. method according to claim 19, it is characterised in that the code word number K of the M code word group_mIt is equal to K, Wherein, K is the positive integer more than 1.

24. method according to claim 19, it is characterised in that the code word number K of the M code word group_m=a_m×K_m-1, its In, a_mFor positive integer.

25. method according to claim 19, it is characterised in that the packet mode of the code word group, at least including one below：

26. method according to claim 25, it is characterised in that code book is divided into M code word group by base station, at least including following One of：

By the first code book W₁The first dimension index i₁₁It is divided into L₁Individual set C_1k, the first code book W₁The second dimension index i₁₂It is divided into L₂Individual set C_2n, the second code book W₂Index i₂It is divided into L₃Set C_3m, group index is j=k × L₂×L₃+n ×L₃+ m code word group for index set { i₁₁,i₁₂,i₂|i₁₁=C_1k,,i₁₂=C_2n,i₂∈C_3mCorresponding all code words, institute State code word group number M=L₁×L₂×L₃, the code word number of the code word group is K_j=K_1k×K_2n×K_3m, wherein, C_1kIt is Gather { 0,1 ... ..., N₁₁- 1 } a subset, C_1kThere is K_1kIndividual element, C_2nIt is set { 0,1 ... ..., N₁₂-1} A subset, C_2nThere is K_2nIndividual element, C_3mIt is { 0,1 ... ..., M₁- 1 } a subset, C_3mThere is K_3mIt is individual Element, K_j, K_1k, K_2n, K_3mAll it is positive integer, k=0 ..., L₁- 1, n=0 ..., L₂- 1, m=0 ..., L₃- 1, j=0 ..., M-1, L₁For N₁₁Approximate number, L₂For N₁₂Approximate number, L₃For M₁Approximate number, N₁₁, N₁₂And M₁Respectively the first code book First dimension index index i₁₁Number, first the second dimension of code book index index i₁₂Number and the second code book index i₂'s Number.

27. method according to claim 26, it is characterised in that methods described also includes：

As the L₁<N₁₁, the L₃>When 0, code book is divided into M code word group includes：By the N of code book₁₁×M₁Individual code Word presses i₁It is divided into L₁Group, for any one i in every group of code book₁, i₁It is identical, i₂Different all code words are divided into L₂ Group, the M=L₁×L₂, it is describedi₁=0,1 ... ..., N₁₁- 1, i₂=0,1 ... ..., M₁- 1, L₁For N₁₁ Approximate number and more than 1, L₂For M₁An approximate number；Or,

28. method according to claim 19, it is characterised in that the base station receives N number of code word group of terminal feedback Codewords indexes, including：

The base station receives terminal at least one i₁All or part of bit；Or

The base station receives at least one i of terminal feedback₁All or part of bit and at least one i₂All or part of bit； Or

The base station receives at least one i of terminal feedback₁₁All or part of bit and/or i₁₂All or part of bit； Or

29. the method according to claim any one of 26-28, it is characterised in that

The i₁For the first code book W₁Codewords indexes, the i₁₁For the first code book W₁First dimension codewords indexes, the i₁₂ For the first code book W₁Second dimension codewords indexes, the i₂Second code book W₂Codewords indexes, wherein, i₁=0 ..., N₁₁- 1, i₁₁= 0,…,N₁₁- 1, i₁₂=0 ..., N₁₂- 1, i₂=0 ..., M₁-1。

30. the method according to claim any one of 26-28, it is characterised in that

31. method according to claim 19, it is characterised in that the base station receives N number of code word group of terminal feedback Group index, including：Receive N number of code word group corresponding group index j, wherein j=0,1 ... ..., M-1.

32. method according to claim 19, it is characterised in that the precoding information includes at least one of：Precoding Data message, the frequency information of precoding, the enhancing downlink control channel information of precoding.

33. a kind of processing method of channel information, it is characterised in that including：

The CQI of base station receiving terminal feedback, and the modulating-coding grade that data are sent is determined according to the CQI；

Wherein, the CQI is the code word determination letter in the N number of code word group selected according to the terminal from M code word group Road quality information CQI, wherein, N is the positive integer less than M, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M.

34. a kind of processing unit of channel information, applied to terminal, it is characterised in that including：

First division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group bag Include K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ... ..., M-1；

First choice module, for according to channel information from the N number of code word group of the M code word group selection, wherein, N is Positive integer less than M；

First feedback module, is included for feeding back group index or N number of code word group comprising N number of code word group Code word codewords indexes configured information.

35. a kind of processing unit of channel information, applied to terminal, it is characterised in that including：

Second division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group bag Include K_mIndividual code word, M is positive integer, K_mFor the integer more than 1, m=0,1 ..., M；

First determining module, channel quality information CQI is determined for the code word in N number of code word group, wherein, N For the positive integer less than M；

Second feedback module, for feeding back the CQI determined.

36. a kind of processing unit of channel information, applied to base station, it is characterised in that including：

3rd division module, for the code word included in code book to be divided into M code word group, wherein, m-th of code word group bag Include K_mIndividual code word, M is positive integer, and m is the positive integer less than or equal to M, K_mFor the integer more than 1；

Second determining module, for K in the group index of N number of code word group fed back according to terminal or N number of code word group_m The codewords indexes of individual code word, or, code word in the group index or the code word group of N number of code word group that the base station itself is determined Codewords indexes the code word of N number of code word group is obtained from the M code word group, wherein, N number of code word group is selected from institute M code word group is stated, N is the positive integer less than M；

37. a kind of processing unit of channel information, applied to base station, it is characterised in that including：

Second receiving module, the CQI fed back for receiving terminal；

3rd determining module, for determining the modulating-coding grade that data are sent according to the CQI, wherein, the CQI Channel quality information CQI is determined for the code word in N number of code word group for being selected according to the terminal from M code word group, its In, N is the positive integer less than M, wherein, m-th of code word group includes K_mIndividual code word, M is positive integer, K_mTo be big In 1 integer, m=0,1 ..., M.