CN106911373A - The sending, receiving method and device of channel information, terminal and base station - Google Patents

Abstract

The invention provides sending, receiving method and device, the terminal and base station of a kind of channel information, wherein, the sending method of channel information includes：Obtain channel information；According to order designator RI and precoding matrix indicators PMI that the channel information determines to be matched with the channel information from the codebook space for pre-saving；The RI and the PMI are sent to base station；Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N>=2, wherein, i-th group of code word is to swap the code word for obtaining to the row in jth group code word in N group code words in N group code words, and i=1,2 ... N, j=1,2 ... N, j are not equal to i.By the present invention, solve the problems, such as that the code book performance in correlation technique in LTE system is not good, and then improve the performance of code book.

Description

The sending, receiving method and device of channel information, terminal and base station

Technical field

The present invention relates to the communications field, in particular to sending, receiving method and device, the end of a kind of channel information End and base station.

Background technology

In wireless communication system, transmitting terminal and receiving terminal are higher to obtain using many antennas by the way of spatial reuse Speed.Relative to general method for spacial multiplex, a kind of enhanced technology is receiving terminal feedback channel information to transmitting terminal, hair Sending end launches precoding technique according to the channel information for obtaining using some, greatly improves transmission performance.It is many for single user In input multi output (Multi-input Multi-output, MIMO), directly prelisted using channel characteristics Vector Message Code；For in multiuser MIMO, it is necessary to more accurately channel information.

In Long Term Evolution (Long Term Evolution, LTE) in the works, the feedback of channel information mainly use compared with The feedback method of simple single code book, and the performance of the transmitting precoding technique of MIMO relys more on the standard of wherein code book feedback Exactness.Channel information based on code book briefly described below quantifies the general principle of feedback：

Assuming that Limited Feedback channel capacity is B bps/Hz, then the number of available code word is N=2^BIt is individual.Channel matrix Space of feature vectors through quantization constitute codebook spaceTransmitting terminal is preserved or real jointly with receiving terminal When produce this code book (sending and receiving end is identical).According to receiving terminal obtain channel matrix H, receiving terminal according to certain criterion fromMiddle choosing Select a code word most matched with channelAnd code word sequence number i is fed back into transmitting terminal.Here, it is PMI that code word sequence is known as (Precoding Matrix Indicator, precoding matrix indicators).Transmitting terminal finds according to this sequence number i and prelists accordingly Code code wordSo as to obtain channel information,Illustrate the characteristic vector information of channel.

In generalThe corresponding code books of multiple Rank (order) can be divided into, multiple code words can be corresponded under each Rank To quantify the pre-coding matrix of Rank lower channels characteristic vector composition.In general code word when Rank is N can all have N to arrange. So, code bookMultiple sub-codebooks can be divided into by the difference of Rank, as shown in table 1.

Table 1

Wherein, in Rank>The code word that storage is needed when 1 is all matrix form, and the wherein code book in LTE protocol is exactly to use This codebook quantification feedback method, as precoding codebook is meant that with channel information quantization codebook in actually LTE. In this application, for the sake of unification, vector can also regard the matrix that dimension is 1 as.

The quantitative efficiency of the design of code book has been largely fixed the performance of MIMO precoding techniques.Therefore have one with The codebook design that channel is matched very much is the lifting for being remarkably contributing to systematic function, and more the code book performance of match channels feature is just It is better, therefore code word in general code book suffers from the model extremely matched with channel characteristics, for example, in LTE in 8Tx code books Model just matches dual-polarized channel characteristics very much, as follows：

Rank1 code word models：

Rank2 code word models：

Rank3 code word models：

Rank4 code word models：

Rank5 code word models：

Rank6 code word models：

Rank7 code word models：

Rank8 code word models：

Wherein, N ∈ { 0,1 }, m are the index of PMI.

In the LTE protocol of correlation technique, in order to reduce complexity, maximum supports two streams of code words (Codeword, CW) Simultaneous transmission, specific layer mapping relations are as shown in figure 1, layer mapping adapts to various antenna configurations.

In above-mentioned code word model, for each layer (order), the code word corresponding to it is changeless, thus, its with The matching degree of channel keeps constant, i.e., the row arrangement of the code word model in correlation technique is fairly simple, can not obtain optimal MIMO performances.

In addition, working as RI=5, when 6,7,8, the code book that current LTE system is designed is more complicated, to each RI=5, For 6,7,8 code book, all containing the code word number more than comparing in code book, therefore cause code book feedback overhead than larger, and The performance of system does not obtain optimal MIMO performances.

For the not good problem of the code book performance in LTE system in correlation technique, effective solution party is not yet proposed at present Case.

The content of the invention

The invention provides sending, receiving method and device, the terminal and base station of a kind of channel information, at least to solve phase The not good problem of code book performance in the technology of pass in LTE system.

According to one embodiment of present invention, there is provided a kind of sending method of channel information, including：Obtain channel letter Breath；According to the order designator that the channel information determines to be matched with the channel information from the codebook space for pre-saving (Rank Indicator, abbreviation RI) and precoding matrix indicators PMI；The RI and the PMI are sent to base station；Its In, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N>=2, its In, i-th group of code word is that the row in jth group code word in N group code words are swapped with the code word for obtaining in N group code words, i=1, 2 ... N, j=1,2 ... N, j are not equal to i.

In embodiments of the present invention, when RI is 3, the model of i-th group of code word is:The model of the jth group code word is：Wherein, α, β is plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 4, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β are plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 5, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 6, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 7, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

In embodiments of the present invention, when RI is 8, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word For：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iFor Vector, i=0,1,2,3.

According to one embodiment of present invention, there is provided a kind of sending method of channel information, including：Obtain channel letter Breath；According to the channel information determine from the codebook space for pre-saving the order designator RI that is matched with the channel information and Precoding matrix indicators PMI；The RI and the PMI are sent to base station；Wherein, as the RI=7, the codebook space Include 1 or multiple with the code word of drag：Or Person,Wherein, α, β, γ, θ are plural number, b_iIt is arrow Amount, i=0,1,2,3.

According to one embodiment of present invention, there is provided a kind of sending method of channel information, including：Obtain channel letter Breath；According to the channel information determine from the codebook space for pre-saving the order designator RI that is matched with the channel information and Precoding matrix indicators PMI；The RI and the PMI are sent to base station；Wherein, RI=r, r=1,2 are worked as ..., when 8, institute It is W to state the pre-coding matrix that codebook space includes^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_t's Positive integer, N_tIt is positive integer.

In embodiments of the present invention, the N_tThe codebook parameter and/or antenna port number configured according to base station determine；Institute State codebook parameter and/or the determination of antenna port number that m is configured according to base station；Matched somebody with somebody according to base station the position of the m rows neutral element The codebook parameter and/or antenna port number put determine；Wherein, the codebook parameter include the first dimension configured information N1 and/ Or the second dimension configured information N2；The antenna port number includes the first dimension antenna port number and/or the second dimension day Line port number；The N1 includes the number of antennas of single polarised direction in the first dimension, and the N2 includes single in the second dimension The number of antennas of individual polarised direction.

In embodiments of the present invention, above-mentioned W^(r)With with the matrix of drag：Its Middle i₁,i₂,…,i_rIt is integer, α_i1,α_i2,…,α_irIt is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn include m/2 null element Element, k=1,2 ..., i_r, N_tIt is positive integer, m is less than N_tPositive even numbers.

According to one embodiment of present invention, there is provided a kind of method of reseptance of channel information, including：Receiving terminal sends Order designator RI and precoding matrix indicators PMI；Looked into from the codebook space for pre-saving according to the RI and the PMI Look for code word corresponding with the RI and the PMI；Channel information is obtained according to the code word；Wherein, as the RI=r, r=3, The corresponding code book of 4 ... 8, the RI=r includes N group code words, and N is integer, and N>=2, wherein, i-th group of code word in N group code words It is that the code word for obtaining, i=1,2 ... N, j=1,2 ... N, j are swapped to the row in jth group code word in N group code words In i.

According to one embodiment of present invention, there is provided a kind of method of reseptance of channel information, including：What receiving terminal sent Order designator RI and precoding matrix indicators PMI；According to the RI and the PMI searched from the codebook space for pre-saving with The RI and the corresponding code words of the PMI；Channel information is obtained according to the code word；Wherein, as the RI=7, the code book is empty Between include 1 or multiple with the code word of drag： Or,Wherein, α, β, γ, θ are plural number, b_iIt is arrow Amount, i=0,1,2,3.

According to one embodiment of present invention, there is provided a kind of method of reseptance of channel information, including：Receiving terminal sends Order designator RI and precoding matrix indicators PMI；Looked into from the codebook space for pre-saving according to the RI and the PMI Look for code word corresponding with the RI and the PMI；Channel information is obtained according to the code word；Wherein, RI=r, r=1 are worked as, 2 ..., when 8, the pre-coding matrix that the codebook space is included is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, M is less than N_tPositive integer, N_tIt is positive integer.

According to one embodiment of present invention, there is provided a kind of dispensing device of channel information, including：Acquisition module, uses In acquisition channel information；Determining module, for according to the channel information determine from the codebook space for pre-saving with it is described The order designator RI and precoding matrix indicators PMI of channel information matching；Sending module, for by the RI and PMI It is sent to base station；Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is whole Number, and N>=2, wherein, i-th group of code word is to swap what is obtained to the row in jth group code word in N group code words in N group code words Code word, i=1,2 ... N, j=1,2 ... N, j is not equal to i.

According to one embodiment of present invention, there is provided a kind of dispensing device of channel information, including：Acquisition module, uses In acquisition channel information；Determining module, for according to the channel information determine from the codebook space for pre-saving with it is described The order designator RI and precoding matrix indicators PMI of channel information matching；Sending module, for by the RI and PMI It is sent to base station；Wherein, as the RI=7, the codebook space includes 1 or multiple with the code word of drag：Or, Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

According to one embodiment of present invention, there is provided a kind of dispensing device of channel information, including：Acquisition module, uses In acquisition channel information；Determining module, for according to the channel information determine from the codebook space for pre-saving with it is described The order designator RI and precoding matrix indicators PMI of channel information matching；Sending module, for by the RI and PMI It is sent to base station；Wherein, RI=r, r=1,2 are worked as ..., when 8, the pre-coding matrix that the codebook space is included is W^(r), W^(r)For N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

According to one embodiment of present invention, there is provided a kind of terminal, including said apparatus.

According to one embodiment of present invention, there is provided a kind of reception device of channel information, including：Receiver module, uses In order designator RI and precoding matrix indicators PMI that receiving terminal sends；Searching modul, for according to the RI and described PMI searches code word corresponding with the RI and the PMI from the codebook space for pre-saving；Acquisition module, for according to institute State code word and obtain channel information；Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group codes Word, N is integer, and N>=2, wherein, i-th group of code word is that the row in jth group code word in N group code words are handed in N group code words The code word got in return, i=1,2 ... N, j=1,2 ... N, j is not equal to i.

According to one embodiment of present invention, there is provided a kind of reception device of channel information, including：Receiver module, uses In order designator RI and precoding matrix indicators PMI that receiving terminal sends；Searching modul, for according to the RI and described PMI searches code word corresponding with the RI and the PMI from the codebook space for pre-saving；Acquisition module, for according to described Code word obtains channel information；Wherein, as the RI=7, the codebook space includes 1 or multiple with the code word of drag：Or, Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

According to one embodiment of present invention, there is provided a kind of reception device of channel information, including：Receiver module, uses In order designator RI and precoding matrix indicators PMI that receiving terminal sends；Searching modul, for according to the RI and described PMI searches code word corresponding with the RI and the PMI from the codebook space for pre-saving；Acquisition module, for according to institute State code word and obtain channel information；Wherein, RI=r, r=1,2 are worked as ..., when 8, the pre-coding matrix that the codebook space is included is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

According to one embodiment of the present of invention, there is provided a kind of base station, including said apparatus.

By the present invention, using acquisition channel information；It is true from the codebook space for pre-saving according to the channel information The fixed order designator RI and precoding matrix indicators PMI matched with the channel information；The RI and the PMI are sent to Base station；Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N> =2, wherein, i-th group of code word is to swap the code word for obtaining, i=to the row in jth group code word in N group code words in N group code words 1st, 2 ... N, j=1,2 ... N, j is not equal to i, i.e., using in the corresponding N groups code words of RI=r, i-th group of code word is jth group code word Row exchanging form mode, by considering when code word is designed influence that the exchange of row mapped layer so that entering with channel The code book that is more matched with the channel can be obtained during row matching, code book performance in correlation technique in LTE system is solved not Good problem, and then improve the performance of code book.

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, this hair Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is correlation technique middle level mapping relations schematic diagram；

Fig. 2 is the flow chart one of the sending method of channel information according to embodiments of the present invention；

Fig. 3 is the flowchart 2 of the sending method of channel information according to embodiments of the present invention；

Fig. 4 is the flow chart 3 of the sending method of channel information according to embodiments of the present invention；

Fig. 5 is the flow chart one of the method for reseptance of channel information according to embodiments of the present invention；

Fig. 6 is the flowchart 2 of the method for reseptance of channel information according to embodiments of the present invention；

Fig. 7 is the flow chart 3 of the method for reseptance of channel information according to embodiments of the present invention；

Fig. 8 is the structured flowchart one of the dispensing device of channel information according to embodiments of the present invention；

Fig. 9 is the structured flowchart two of the dispensing device of channel information according to embodiments of the present invention；

Figure 10 is the structured flowchart three of the dispensing device of channel information according to embodiments of the present invention；

Figure 11 is the structured flowchart one of the reception device of channel information according to embodiments of the present invention；

Figure 12 is the structured flowchart two of the reception device of channel information according to embodiments of the present invention；

Figure 13 is the structured flowchart three of the reception device of channel information according to embodiments of the present invention；

Figure 14 is a kind of antenna topology schematic diagram of the antenna of use dual polarization 16 according to the preferred embodiment of the invention；

Figure 15 is a kind of antenna topology schematic diagram of the antenna of use dual polarization 12 according to the preferred embodiment of the invention.

Specific embodiment

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

It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.

A kind of sending method of channel information is provided in the present embodiment, and Fig. 2 is channel according to embodiments of the present invention The flow chart one of the sending method of information, as shown in Fig. 2 the flow comprises the following steps：

Step S202, obtains channel information；

Step S204, determines to be matched with the channel information according to the channel information from the codebook space for pre-saving Order designator RI and precoding matrix indicators PMI；

Step S206, base station is sent to by the RI and the PMI；Wherein, as the RI=r, r=3,4 ... 8, institute The corresponding code books of RI=r are stated including N group code words, N is integer, and N>=2, wherein, i-th group of code word is to N group codes in N group code words Row in word in jth group code word swap the code word for obtaining, and i=1,2 ... N, j=1,2 ... N, j are not equal to i.

By above-mentioned steps, using in the corresponding N groups code words of RI=r, i-th group of code word exchanges shape for the row of jth group code word The mode of formula, the influence that the exchange of row map layer is considered by when code word is designed, i.e., by consider in LIE streams of code words and The relation of layer mapping, obtains code word the characteristics of mapped by layer so that can when being matched with channel with reference to the feature of row The code word more matched with the channel is obtained, solves the problems, such as that the code book performance in correlation technique in LTE system is not good, and then Improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

In embodiments of the present invention, when RI is 3, the model of i-th group of code word is:The model of the jth group code word is：Wherein, α, β is plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 4, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β are plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 5, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 6, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 7, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

In embodiments of the present invention, when RI is 8, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word For：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iFor Vector, i=0,1,2,3.

A kind of sending method of channel information is provided in the present embodiment, and Fig. 3 is channel according to embodiments of the present invention The flowchart 2 of the sending method of information, as shown in figure 3, the flow comprises the following steps：

Step S302, obtains channel information；

Step S304, determines to be matched with the channel information according to the channel information from the codebook space for pre-saving Order designator RI and precoding matrix indicators PMI；

Step S306, base station is sent to by the RI and the PMI；Wherein, when in the RI=7, the codebook space Including 1 or multiple with the code word of drag： Or,Wherein, α, β, γ, θ are plural number, b_iIt is arrow Amount, i=0,1,2,3.

By above-mentioned steps, the influence that the exchange of row is mapped layer is considered using when code word is designed, i.e., by considering The relation of streams of code words and layer mapping in LIE, feature the characteristics of mapped by layer with reference to row obtains code word so that enter with channel The code word that is more matched with the channel can be obtained during row matching, code book performance in correlation technique in LTE system is solved not Good problem, and then improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

A kind of sending method of channel information is provided in the present embodiment, and Fig. 4 is channel according to embodiments of the present invention The flow chart 3 of the sending method of information, as shown in figure 4, the flow comprises the following steps：

Step S402, obtains channel information；

Step S404, determines to be matched with the channel information according to the channel information from the codebook space for pre-saving Order designator RI and precoding matrix indicators PMI；

Step S406, base station is sent to by the RI and the PMI；Wherein, RI=r, r=1,2 are worked as ..., it is described when 8 The pre-coding matrix that codebook space is included is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tJust Integer, N_tIt is positive integer.

By above-mentioned steps, using including m row neutral elements in the pre-coding matrix of design, you can with by by prior art Defined pre-coding matrix is directly extended for the pre-coding matrix of above-mentioned design in middle LTE system, and then causes the design The code word number that includes of pre-coding matrix will not increase or will not increase considerably, with correlation technique in will be defined Pre-coding matrix is compared by the code book that some complicated mathematical operations are obtained, and saves the feedback overhead of code book, and then cause System obtains preferably MIMO performances, and then solves the problems, such as that the code book performance in correlation technique in LTE system is not good.

It should be noted that above-mentioned N_tThe codebook parameter and/or antenna port number configured according to base station determine；Above-mentioned m The codebook parameter and/or antenna port number configured according to base station determine；What the position of above-mentioned m rows neutral element configured according to base station Codebook parameter and/or antenna port number determine；Wherein, above-mentioned codebook parameter includes the first dimension configured information N1 and/or the Two-dimensionses configured information N2；Above-mentioned antenna port number includes the first dimension antenna port number and/or the second dimension antenna end Mouth number；The N1 includes the number of antennas of single polarised direction in the first dimension, and the N2 includes single pole in the second dimension Change the number of antennas in direction.

It should be noted that the W^(r)With with the matrix of drag：Its Middle i₁,i₂..., i_rIt is integer,It is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn include m/2 null element Element, k=1,2 ..., i_r, N_tIt is positive integer, m is less than N_tPositive even numbers.

A kind of method of reseptance of channel information is provided in the present embodiment, and Fig. 5 is channel according to embodiments of the present invention The flow chart one of the method for reseptance of information, as shown in figure 5, the flow comprises the following steps：

Step S502, order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Step S504, searches and the RI and described according to the RI and the PMI from the codebook space for pre-saving The corresponding code words of PMI；

Step S506, channel information is obtained according to the code word；Wherein, as the RI=r, r=3,4 ... 8, the RI The corresponding code books of=r include N group code words, and N is integer, and N>=2, wherein, i-th group of code word is in N group code words in N group code words Row in jth group code word swap the code word for obtaining, and i=1,2 ... N, j=1,2 ... N, j are not equal to i.

By above-mentioned steps, using in the corresponding N groups code words of RI=r, i-th group of code word exchanges shape for the row of jth group code word The mode of formula, the influence that the exchange of row map layer is considered by when code word is designed, i.e., by consider in LIE streams of code words and The relation of layer mapping, obtains code word the characteristics of mapped by layer so that can when being matched with channel with reference to the feature of row The code word more matched with the channel is obtained, solves the problems, such as that the code book performance in correlation technique in LTE system is not good, and then Improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

In embodiments of the present invention, when RI is 3, the model of i-th group of code word is:The model of the jth group code word is：Wherein, α, β is plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 4, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β are plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 5, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 6, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 7, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

In embodiments of the present invention, when RI is 8, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word For：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iFor Vector, i=0,1,2,3.

A kind of method of reseptance of channel information is provided in the present embodiment, and Fig. 6 is channel according to embodiments of the present invention The flowchart 2 of the method for reseptance of information, as shown in fig. 6, the flow comprises the following steps：

Step S602, order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Step S604, searches and the RI and described according to the RI and the PMI from the codebook space for pre-saving The corresponding code words of PMI；

Step S606, channel information is obtained according to the code word；Wherein, as the RI=7, the codebook space includes 1 or multiple are with the code word of drag：Or Person,Wherein, α, β, γ, θ are plural number, b_iIt is arrow Amount, i=0,1,2,3.

By above-mentioned steps, the influence that the exchange of row is mapped layer is considered using when code word is designed, i.e., by considering The relation of streams of code words and layer mapping in LIE, feature the characteristics of mapped by layer with reference to row obtains code word so that enter with channel The code word that is more matched with the channel can be obtained during row matching, code book performance in correlation technique in LTE system is solved not Good problem, and then improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

A kind of method of reseptance of channel information is provided in the present embodiment, Fig. 7 is channel letter according to embodiments of the present invention The flow chart 3 of the method for reseptance of breath, as shown in fig. 7, the flow comprises the following steps：

Step S702, order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Step S704, searches and the RI and described according to the RI and the PMI from the codebook space for pre-saving The corresponding code words of PMI；

Step S706, channel information is obtained according to the code word；Wherein, RI=r, r=1,2 are worked as ..., when 8, the code book The pre-coding matrix that space includes is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

By above-mentioned steps, using including m row neutral elements in the pre-coding matrix of design, you can with by by prior art Defined pre-coding matrix is directly extended for the pre-coding matrix of above-mentioned design in middle LTE system, and then causes the design The code word number that includes of pre-coding matrix will not increase or will not be significantly increased, with correlation technique in will be defined pre- Encoder matrix is compared by the code book that some complicated mathematical operations are obtained, and saves the feedback overhead of code book, and then so that be System obtains preferably MIMO performances, and then solves the problems, such as that the code book performance in correlation technique in LTE system is not good.

It should be noted that above-mentioned N_tThe codebook parameter and/or antenna port number configured according to base station determine；Above-mentioned m The codebook parameter and/or antenna port number configured according to base station determine；What the position of above-mentioned m rows neutral element configured according to base station Codebook parameter and/or antenna port number determine；Wherein, above-mentioned codebook parameter includes the first dimension configured information N1 and/or the Two-dimensionses configured information N2；Above-mentioned antenna port number includes the first dimension antenna port number and/or the second dimension antenna end Mouth number；The N1 includes the number of antennas of single polarised direction in the first dimension, and the N2 includes single pole in the second dimension Change the number of antennas in direction.

It should be noted that the W^(r)With with the matrix of drag：Its Middle i₁,i₂,…,i_rIt is integer,It is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn include m/2 null element Element, k=1,2 ..., i_r, N_tIt is positive integer, m is less than N_tPositive even numbers.

A kind of dispensing device of channel information is provided in the present embodiment, and Fig. 8 is channel according to embodiments of the present invention The structured flowchart one of the dispensing device of information, as shown in figure 8, the device includes：

Acquisition module 82, for obtaining channel information；

Determining module 84, is connected with acquisition module 82, for according to the channel information from the codebook space for pre-saving The middle order designator RI and precoding matrix indicators PMI for determining to be matched with the channel information；

Sending module 86, is connected with determining module 84, for the RI and the PMI to be sent into base station；Wherein, institute is worked as State RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, N is integer, and N>=2, wherein, N group codes I-th group of code word is that the row in jth group code word in N group code words are swapped with the code word for obtaining in word, i=1,2 ... N, j=1, 2 ... N, j are not equal to i.

By said apparatus, using in the corresponding N groups code words of RI=r, i-th group of code word exchanges shape for the row of jth group code word The mode of formula, the influence that the exchange of row is mapped layer is considered by the code word for designing, that is, streams of code words is reflected with layer in considering LIE The relation penetrated, obtains code word the characteristics of mapped by layer so that can obtain when being matched with channel with reference to the feature of row The code word more matched with the channel, solves the problems, such as that the code book performance in correlation technique in LTE system is not good, and then improve The performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

In embodiments of the present invention, when RI is 3, the model of i-th group of code word is:The model of the jth group code word is：Wherein, α, β is plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 4, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β are plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 5, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 6, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 7, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

In embodiments of the present invention, when RI is 8, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word For：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iFor Vector, i=0,1,2,3.

A kind of dispensing device of channel information is provided in the present embodiment, and Fig. 9 is channel according to embodiments of the present invention The structured flowchart two of the dispensing device of information, as shown in figure 9, the device includes：

Acquisition module 92, for obtaining channel information；

Determining module 94, is connected with above-mentioned acquisition module 92, for according to the channel information from the code book for pre-saving The order designator RI and precoding matrix indicators PMI matched with the channel information are determined in space；

Sending module 96, is connected with above-mentioned determining module 94, for the RI and the PMI to be sent into base station；Wherein, As the RI=7, the codebook space includes 1 or multiple with the code word of drag：Or, Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

By said apparatus, the influence that the exchange of row is mapped layer is considered using the code word of design, that is, in considering LIE The relation of streams of code words and layer mapping, the code word obtained with reference to the feature of row the characteristics of mapped using layer so that carried out with channel The code word more matched with the channel can be obtained during matching, the code book performance solved in correlation technique in LTE system is not good Problem, and then improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

A kind of dispensing device of channel information is provided in the present embodiment, and Figure 10 is channel according to embodiments of the present invention The structured flowchart three of the dispensing device of information, as shown in Figure 10, the device includes：

Acquisition module 1002, for obtaining channel information；

Determining module 1004, be connected with above-mentioned acquisition module 1002, for according to the channel information from pre-saving The order designator RI and precoding matrix indicators PMI matched with the channel information are determined in codebook space；

Sending module 1006, is connected with above-mentioned determining module 1004, for the RI and the PMI to be sent into base station； Wherein, RI=r, r=1,2 are worked as ..., when 8, the pre-coding matrix that the codebook space is included is W^(r), W^(r)It is N_t× r matrixes, Wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

Said apparatus, using including m row neutral elements in the pre-coding matrix of design, you can with by will in the prior art Defined pre-coding matrix is directly extended for the pre-coding matrix of above-mentioned design in LTE system, and then causes the design The code word number that pre-coding matrix is included will not increase or will not increase considerably, with correlation technique in will be defined pre- Encoder matrix is compared by the code book that some complicated mathematical operations are obtained, and saves the feedback overhead of code book, and then so that be System obtains preferably MIMO performances, and then solves the problems, such as that the code book performance in correlation technique in LTE system is not good.

It should be noted that above-mentioned N_tThe codebook parameter and/or antenna port number configured according to base station determine；Above-mentioned m The codebook parameter and/or antenna port number configured according to base station determine；What the position of above-mentioned m rows neutral element configured according to base station Codebook parameter and/or antenna port number determine；Wherein, above-mentioned codebook parameter includes the first dimension configured information N1 and/or the Two-dimensionses configured information N2；Above-mentioned antenna port number includes the first dimension antenna port number and/or the second dimension antenna end Mouth number；The N1 includes the number of antennas of single polarised direction in the first dimension, and the N2 includes single pole in the second dimension Change the number of antennas in direction.

It should be noted that the W^(r)With with the matrix of drag：Its Middle i₁,i₂,…,i_rIt is integer,It is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn include m/2 null element Element, k=1,2 ..., i_r, N_tIt is positive integer, m is less than N_tPositive even numbers.

A kind of terminal, including the device described in above-mentioned Fig. 8, Fig. 9 and Figure 10 are additionally provided in the present embodiment.

It should be noted that in embodiments of the present invention, described terminal is included but is not limited to：Data card, mobile phone, notes The various terminals such as this computer, PC, panel computer, personal digital assistant, bluetooth and relaying, remote device, wirelessly connect The various Wireless Telecom Equipments such as access point.

A kind of reception device of channel information is provided in the present embodiment, and Figure 11 is channel according to embodiments of the present invention The structured flowchart one of the reception device of information, as shown in figure 11, the device includes：

Receiver module 1102, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul 1104, is connected with above-mentioned receiver module 1102, for according to the RI and PMI from pre-saving Codebook space in search code word corresponding with the RI and the PMI；

Acquisition module 1106, is connected with above-mentioned searching modul 1104, for obtaining channel information according to the code word；Its In, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N>=2, its In, i-th group of code word is that the row in jth group code word in N group code words are swapped with the code word for obtaining in N group code words, i=1, 2 ... N, j=1,2 ... N, j are not equal to i.

By said apparatus, using in the corresponding N groups code words of RI=r, i-th group of code word exchanges shape for the row of jth group code word The mode of formula, the influence that the exchange of row is mapped layer is considered by the code word for designing, i.e., by considering streams of code words and layer in LIE The relation of mapping, the code word obtained with reference to the feature of row the characteristics of mapped using layer so that can when being matched with channel The code word more matched with the channel is obtained, solves the problems, such as that the code book performance in correlation technique in LTE system is not good, and then Improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

In embodiments of the present invention, when RI is 3, the model of i-th group of code word is:The model of the jth group code word is：Wherein, α, β is plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 4, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β are plural number, b_iIt is vector, i=0,1.

In embodiments of the present invention, when RI is 5, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 6, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

In embodiments of the present invention, when RI is 7, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word is：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

In embodiments of the present invention, when RI is 8, the model of i-th group of code word is：The model of the jth group code word is：Or, the model of i-th group of code word For：The model of the jth group code word is：Wherein, α, β, γ, θ are plural number, b_iFor Vector, i=0,1,2,3.

A kind of reception device of channel information is provided in the present embodiment, and Figure 12 is channel according to embodiments of the present invention The structured flowchart two of the reception device of information, as shown in figure 12, the device includes：

Receiver module 1202, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul 1204, is connected with above-mentioned receiver module 1202, for according to the RI and PMI from pre-saving Codebook space in search code word corresponding with the RI and the PMI；

Acquisition module 1206, is connected with above-mentioned searching modul 1204, for being obtained according to the code word Take channel information；Wherein, as the RI=7, the codebook space includes 1 or multiple with the code word of drag：Or, Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

By said apparatus, the influence that the exchange of row is mapped layer is considered using in the code word for designing, that is, consider LIE The relation of middle streams of code words and layer mapping, the code word obtained with reference to the feature of row the characteristics of mapped using layer so that enter with channel The code word that is more matched with the channel can be obtained during row matching, code book performance in correlation technique in LTE system is solved not Good problem, and then improve the performance of code book.

Further, in RI>Code word when 1 is all matrix form, thus the row in code word can be swapped, it is necessary to Illustrate, vector can also regard the matrix that dimension is 1 as, and the corresponding code words of a RI in correlation technique only have one The form of expression is planted, thus, when being matched to channel, a kind of code word of the form of expression can only also be matched with channel, But the code word of another form of expression in the present embodiment, can be obtained after to the row exchange of code word, i.e., the code word exists various The form of expression, when being matched to channel, can be matched, and then can obtain by the code word of many forms with it The code word more matched with the channel.

A kind of reception device of channel information is provided in the present embodiment, and Figure 13 is channel according to embodiments of the present invention The structured flowchart three of the reception device of information, as shown in figure 13, the device includes：

Receiver module 1302, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul 1304, is connected with above-mentioned receiver module 1302, for according to the RI and PMI from pre-saving Codebook space in search code word corresponding with the RI and the PMI；

Acquisition module 1306, is connected with above-mentioned searching modul 1304, for obtaining channel information according to the code word；Its In, work as RI=r, r=1,2 ..., when 8, the pre-coding matrix that the codebook space is included is W^(r), W^(r)It is N_t× r matrixes, its Middle W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

Said apparatus, using including m row neutral elements in the pre-coding matrix of design, you can with by will in the prior art Defined pre-coding matrix is directly extended for the pre-coding matrix of above-mentioned design in LTE system, and then causes the design The code word number that pre-coding matrix is included will not increase or will not increase considerably, with correlation technique in will be defined pre- Encoder matrix is compared by the code book that some complicated mathematical operations are obtained, and saves the feedback overhead of code book, and then so that be System obtains preferably MIMO performances, and then solves the problems, such as that the code book performance in correlation technique in LTE system is not good.

It should be noted that above-mentioned N_tThe codebook parameter and/or antenna port number configured according to base station determine；Above-mentioned m The codebook parameter and/or antenna port number configured according to base station determine；What the position of above-mentioned m rows neutral element configured according to base station Codebook parameter and/or antenna port number determine；Wherein, above-mentioned codebook parameter includes the first dimension configured information N1 and/or the Two-dimensionses configured information N2；Above-mentioned antenna port number includes the first dimension antenna port number and/or the second dimension antenna end Mouth number；The N1 includes the number of antennas of single polarised direction in the first dimension, and the N2 includes single pole in the second dimension Change the number of antennas in direction.

It should be noted that the W^(r)With with the matrix of drag：Its Middle i₁,i₂,…,i_rIt is integer,It is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn include m/2 null element Element, k=1,2 ..., i_r, N_tIt is positive integer, m is less than N_tPositive even numbers.

A kind of base station, including the device described in above-mentioned Figure 11, Figure 12 or Figure 13 are additionally provided in the present embodiment.

Above-mentioned base station includes but is not limited to：The various Wireless Telecom Equipments such as macro base station, micro-base station, WAP.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably implementation method.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and computer software product storage is in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used to so that a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each embodiment of the invention.

Said apparatus had carried out repeating no more for explanation for realizing above-described embodiment and preferred embodiment.Such as Used below, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples institute The device of description is preferably realized with software, but hardware, or the realization of the combination of software and hardware is also possible and quilt Conception.

It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at many respectively In individual processor.

In order to be better understood from the present invention, the present invention is further explained below in conjunction with preferred embodiment.

Preferred embodiment 1

For 8 antennas or multiple-input and multiple-output (MIMO) system more than 8 antennas, including transmitting terminal and receiving terminal, transmitting End preserves precoding codebook jointly with receiving terminal, and receiving terminal selects one according to channel estimation results from the precoding codebook After code word, the sequence number of the code word is fed back into transmitting terminal, code word that transmitting terminal finds according to the sequence number, to being sent to receiving terminal Symbolic blocks carry out precoding.

Such as 8 antenna systems, its RI=7 code book for preserving can be form described in table 2.Wherein：P is antenna The number of port, N_i(i=1,2) number of the antenna port of the single polarised direction being respectively in the first dimension and the second dimension And meet p=2N₁N₂, O_i(i=1,2) represents the oversample factor in the first dimension and the second dimension, and typical parameter configuration is (N₁,N₂,O₁,O₂)=(2,2,4,4), or (N₁,N₂,O₁,O₂)=(2,2,8,8).Codebook-Config is for configuring The signaling of code book type.N₁,N₂,O₁,O₂Configured by high-level signaling with this five parameters of Codebook-Config.i_1,1And i_1,2 It is a PMI, the PMI of the first dimension and the second dimension is represented respectively.

Table 2

Wherein, l, l', l ", l " ' m, m', m ", m " ' represents index, can be according to the parameter N be given in above table₁,N₂, O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+ O1 etc., N ∈ { 0,1 }, m are the rope of PMI Draw.

Such as 12 antenna systems, its RI=7 code book for preserving can be form described in table 3.Wherein：P is day The number of line end mouthful, N_i(i=1,2) number of the antenna port of the single polarised direction being respectively in the first dimension and the second dimension Mesh and meet p=2N₁N₂, O_i(i=1,2) represents the oversample factor in the first dimension and the second dimension, typical parameter configuration It is (N₁,N₂,O₁,O₂)=(2,3,8,4), or (N₁,N₂,O₁,O₂)=(2,3,8,8), or (N₁,N₂,O₁,O₂)=(3,2, , or (N 8,4)₁,N₂,O₁,O₂)=(3,2,4,4).Codebook-Config is the signaling for configuring code book type.N₁, N₂,O₁,O₂Configured by high-level signaling with this five parameters of Codebook-Config.i_1,1And i_1,2It is a PMI, represents respectively The PMI of the first dimension and the second dimension.

Table 3

Wherein, l, l', l ", l " ' m, m', m ", m " ' represents index, can be according to the parameter N be given in above table₁,N₂, O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, N ∈ { 0,1 }, m are the index of PMI.

Such as 16 antenna systems, its RI=7 code book for preserving can be form described in table 4.Wherein：P is day The number of line end mouthful, N_i(i=1,2) number of the antenna port of the single polarised direction being respectively in the first dimension and the second dimension Mesh and meet p=2N₁N₂, O_i(i=1,2) represents the oversample factor in the first dimension and the second dimension, typical parameter configuration It is (N₁,N₂,O₁,O₂)=(2,4,8,8), or (N₁,N₂,O₁,O₂)=(2,4,8,4), or (N₁,N₂,O₁,O₂)=(4,2, , or (N 8,4)₁,N₂,O₁,O₂)=(4,2,4,4).Codebook-Config is the signaling for configuring code book type.N₁, N₂,O₁,O₂Configured by high-level signaling with this five parameters of Codebook-Config.i_1,1And i_1,2It is a PMI, represents respectively The PMI of the first dimension and the second dimension.

Table 4

Wherein, l, l', l ", l " ' m, m', m ", m " ' represents index, can be according to the parameter N be given in above table₁,N₂, O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, N ∈ { 0,1 }, m are the index of PMI.

Preferred embodiment 2

For 8 antennas or multiple-input and multiple-output (MIMO) system more than 8 antennas, including transmitting terminal and receiving terminal, transmitting End preserves precoding codebook jointly with receiving terminal, and receiving terminal selects one according to channel estimation results from the precoding codebook After code word, the sequence number of the code word is fed back into transmitting terminal, code word that transmitting terminal finds according to the sequence number, to being sent to receiving terminal Symbolic blocks carry out precoding.

Such as 8 antenna systems, its Codebook-Config=1 and RI=3 code book for preserving can be table 5 The form.

Table 5

Wherein：P is the number of antenna port, N_i(i=1,2) it is respectively the single polarization in the first dimension and the second dimension The number of the antenna port in direction and meet p=2N₁N₂, O_i(i=1,2) over-sampling in the first dimension and the second dimension is represented The factor, typical parameter configuration is (N₁,N₂,O₁,O₂)=(2,2,4,4), or (N₁,N₂,O₁,O₂)=(2,2,8,8). Codebook-Config is the signaling for configuring code book type.N₁,N₂,O₁,O₂This five parameters are led to Codebook-Config Cross high-rise signal deployment.i_1,1And i_1,2It is a PMI, the PMI of the first dimension and the second dimension, i is represented respectively₂It is the 2nd PMI.l, L', m, m' represent index, can be according to the parameter N be given in above table₁,N₂,O₁,O₂, i_1,1,i_1,2Etc. determining, such as l= i_1,1, l '=i_1,1+ O1 etc., M is The index of PMI.

Its Codebook-Config=1 and RI=4 code book for preserving can be form described in table 6：

Table 6

Wherein, l, l', m, m' represent index, can be according to the parameter N be given in above table₁,N₂,O₁,O₂, i_1,1,i_1,2 Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, M is the index of PMI.

Its RI=5 code book for preserving can be form described in table 7：

Table 7

Wherein, l, l', l ", m, m', m " represents index, can be according to the parameter N be given in above table₁,N₂,O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, M is the index of PMI.

Its RI=6 code book for preserving can be form described in table 8：

Table 8

Wherein, l, l', l ", m, m', m " represents index, can be according to the parameter N be given in above table₁,N₂,O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, M is the index of PMI.

Its RI=7 code book for preserving can be form described in table 9：

Table 9

Wherein, l, l', l ", l " ' m, m', m ", m " ' represents index, can be according to the parameter N be given in above table₁,N₂, O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, N ∈ { 0,1 }, m are the index of PMI.

Its RI=8 code book for preserving can be form described in table 10：

Table 10

Wherein, l, l', l ", l " ' m, m', m ", m " ' represents index, can be according to the parameter N be given in above table₁,N₂, O₁,O₂, i_1,1,i_1,2Etc. determining, such as l=i_1,1, l '=i_1,1+O₁Deng, N ∈ { 0,1 }, m are the index of PMI.

Preferred embodiment 3

For 8 antennas or multiple-input and multiple-output (MIMO) system more than 8 antennas, including transmitting terminal and receiving terminal, transmitting End preserves precoding codebook jointly with receiving terminal, and receiving terminal selects one according to channel estimation results from the precoding codebook After code word, the sequence number of the code word is fed back into transmitting terminal, transmitting terminal finds the code word according to the sequence number, to being sent to receiving terminal Symbolic blocks carry out precoding.

In newest LTE system evolution, the number of antennas or antenna port number that LTE system is supported have reached 12 Hes 16, and employ dual polarized antenna.When base station, RRC signaling is configured to N₁=4, N₂When=2, it is possible thereby to determine antenna end Mouth number is N_t=2N₁N₂=16, wherein, N_i(i=1,2) it is respectively the single polarised direction in the first dimension and the second dimension Number of antennas, in this configuration, the placing structure of its antenna is as shown in figure 14.Sequence number { 15,16 ..., 30 } in Figure 14 The numbering of representative antennas port.

In this preferred embodiment, the code book of this 16 antenna system is the 8 antenna codebooks expansion defined in current LTE protocol Exhibition gets, then according to determined antenna port number, it may be determined that have 8 row neutral elements in pre-coding matrix.As RI=r, its The pre-coding matrix of preservation is with the matrix of drag：

Wherein, b_kIt is 8 × 1 vector, α_kIt is plural number, k=1,2 ..., i_r.When base station is by RRC signaling or acquiescence Mode notify terminal choose antenna number for { 15,16,19,20,23,24,27,28 } this 8 antennas make precoding when, then prelist The 3rd, 4,7,8,11,12,15,16 this 8 row in code matrix is all neutral element, and the pre-coding matrix of composition has following form：

Also, by matrix W^(r)In non-zero row constitute matrix

Can be that 8 antenna orders defined in LTE system are the pre-coding matrix of r.

Preferred embodiment 4

For 8 antennas or multiple-input and multiple-output (MIMO) system more than 8 antennas, including transmitting terminal and receiving terminal, transmitting End preserves precoding codebook jointly with receiving terminal, and receiving terminal selects one according to channel estimation results from the precoding codebook After code word, the sequence number of the code word is fed back into transmitting terminal, code word that transmitting terminal finds according to the sequence number, to being sent to receiving terminal Symbolic blocks carry out precoding.

In newest LTE system evolution, the number of antennas or antenna port number that LTE system is supported have reached 12 Hes 16, and employ dual polarized antenna.When base station, RRC signaling is configured to N₁=3, N₂When=2, it is possible thereby to determine antenna end Mouth number is N_t=2N₁N₂=12, N_i(i=1,2) antenna of the single polarised direction being respectively in the first dimension and the second dimension Number；In this configuration, the placing structure of its antenna is as shown in figure 15.Sequence number { 15,16 ..., 26 } generation in Figure 15 The numbering of table antenna port.

When the code book of this 12 antenna system be defined in current LTE protocol 8 antenna codebooks extension get, then root According to the antenna port number for determining, it may be determined that there is 4 row neutral elements in pre-coding matrix.As RI=r, its precoding square for preserving Battle array is with the matrix of drag：

Wherein b_kIt is 6 × 1 vector, α_kIt is plural number, k=1,2 ..., i_r.When base station is by RRC signaling or the side of acquiescence Formula notify terminal choose antenna number for { 15,16,19,20,21,22,25,26 } this 8 antennas make precoding when, then precoding The 3rd, 4,9,10 this 4 row in matrix is all neutral element, and the pre-coding matrix of composition has following form：

Also, by matrix W^(r)In non-zero row constitute matrix

Can be that 8 antenna orders defined in LTE system are the pre-coding matrix of r.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can To be arranged to storage for performing the program code of following steps：

S1, obtains channel information；

S2, determines that the order matched with the channel information refers to according to the channel information from the codebook space for pre-saving Show symbol RI and precoding matrix indicators PMI；

S3, base station is sent to by the RI and the PMI；Wherein, as the RI=r, r=3,4 ... 8, the RI=r Corresponding code book includes N group code words, and N is integer, and N>=2, wherein, i-th group of code word is to jth in N group code words in N group code words Row in group code word swap the code word for obtaining, and i=1,2 ... N, j=1,2 ... N, j are not equal to i.

Alternatively, in the present embodiment, above-mentioned storage medium can be included but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. is various can be with the medium of store program codes.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned of the invention each module or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed by computing device in the storage device, and in some cases, can be with different from shown in order execution herein The step of going out or describe, or they are fabricated to each integrated circuit modules respectively, or by the multiple modules in them or Step is fabricated to single integrated circuit module to realize.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, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (22)

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

Obtain channel information；

According to the order designator RI that the channel information determines to be matched with the channel information from the codebook space for pre-saving With precoding matrix indicators PMI；

The RI and the PMI are sent to base station；Wherein, as the RI=r, r=3,4 ... 8, the RI=r is corresponding Code book includes N group code words, and N is integer, and N>=2, wherein, i-th group of code word is to jth group code word in N group code words in N group code words In row swap the code word for obtaining, i=1,2 ... N, j=1,2 ... N, j are not equal to i.

2. method according to claim 1, it is characterised in that when RI is 3,

The model of i-th group of code word is $W^{\left(3\right)}=\left[\begin{array}{ccc}{b}_0& b_0& b_1\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1\end{array}\right];$ The model of the jth group code word

For： $W^{\left(3\right)}=\left[\begin{array}{ccc}{b}_0& b_1& b_0\\ {\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\αb}}_0\end{array}\right],$ Wherein, α, β are plural number, b_iIt is vector, i=0,1.

3. method according to claim 1, it is characterised in that when RI is 4,

The model of i-th group of code word is： $W^{\left(4\right)}=\left[\begin{array}{cccc}{b}_0& b_0& b_1& b_1\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1\end{array}\right],$ The model of the jth group code word For： $W^{\left(4\right)}=\left[\begin{array}{cccc}{b}_0& b_1& b_0& b_1\\ {\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\αb}}_0& -{\mathrm{\βb}}_1\end{array}\right],$ Wherein, α, β are plural number, b_iIt is vector, i=0,1.

4. method according to claim 1, it is characterised in that when RI is 5,

The model of i-th group of code word is： $W^{\left(5\right)}=\left[\begin{array}{ccccc}{b}_0& b_0& b_1& b_1& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2\end{array}\right],$ The jth group code word Model is： $W^{\left(5\right)}=\left[\begin{array}{ccccc}{b}_1& b_1& b_0& b_0& b_2\\ {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\γb}}_2\end{array}\right],$ Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1, 2。

5. method according to claim 1, it is characterised in that when RI is 6,

The model of i-th group of code word is： $W^{\left(6\right)}=\left[\begin{array}{cccccc}{b}_0& b_0& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

The model of the jth group code word is： $W^{\left(6\right)}=\left[\begin{array}{cccccc}{b}_1& b_1& b_0& b_0& b_2& b_2\\ {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right];$ Or,

The model of i-th group of code word is： $W^{\left(6\right)}=\left[\begin{array}{cccccc}{b}_0& b_0& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

The model of the jth group code word is： $W^{\left(6\right)}=\left[\begin{array}{cccccc}{b}_2& b_2& b_0& b_0& b_1& b_1\\ {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1\end{array}\right];$

Wherein, α, β, γ are plural number, b_iIt is vector, i=0,1,2.

6. method according to claim 1, it is characterised in that when RI is 7,

The model of i-th group of code word is：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ The model of the jth group code word is： $W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_3& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\θb}}_3& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right];$ Or,

The model of i-th group of code word is：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ The model of the jth group code word is： $W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_1& b_1& b_3& b_0& b_0& b_2& b_2\\ {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\θb}}_3& {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right];$ Wherein, α, β, γ, θ are plural number, b_iIt is vector, i =0,1,2,3.

7. method according to claim 1, it is characterised in that when RI is 8,

The model of i-th group of code word is：

$W^{\left(8\right)}=\left[\begin{array}{cccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3& -{\mathrm{\θb}}_3\end{array}\right],$

The model of the jth group code word is：

$W^{\left(8\right)}=\left[\begin{array}{cccccccc}{b}_0& b_1& b_0& b_1& b_2& b_3& b_2& b_3\\ {\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\αb}}_0& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& {\mathrm{\θb}}_3& -{\mathrm{\γb}}_2& -{\mathrm{\θb}}_3\end{array}\right];$ Or,

The model of i-th group of code word is：

$W^{\left(8\right)}=\left[\begin{array}{cccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3& -{\mathrm{\θb}}_3\end{array}\right],$

The model of the jth group code word is：

$W^{\left(8\right)}=\left[\begin{array}{cccccccc}{b}_0& b_0& b_2& b_2& b_1& b_1& b_3& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\θb}}_3& -{\mathrm{\θb}}_3\end{array}\right];$

Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

8. a kind of sending method of channel information, it is characterised in that including：

Obtain channel information；

According to the order designator RI that the channel information determines to be matched with the channel information from the codebook space for pre-saving With precoding matrix indicators PMI；

The RI and the PMI are sent to base station；Wherein, as the RI=7, the codebook space includes 1 or many The individual code word with drag：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ Or,

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_3& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\θb}}_3& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

9. a kind of sending method of channel information, it is characterised in that including：

Obtain channel information；

According to the order designator RI that the channel information determines to be matched with the channel information from the codebook space for pre-saving With precoding matrix indicators PMI；

The RI and the PMI are sent to base station；Wherein, RI=r, r=1,2 are worked as ..., when 8, what the codebook space was included Pre-coding matrix is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is

Less than N_tPositive integer, N_tIt is positive integer.

10. method according to claim 9, it is characterised in that the N_tAccording to codebook parameter and/or day that base station configures Line port number determines；The codebook parameter and/or antenna port number that the m is configured according to base station determine；The m rows neutral element The codebook parameter that is configured according to base station of position and/or antenna port number determine；Wherein, the codebook parameter includes the first dimension Degree configured information N₁And/or the second dimension configured information N₂；The antenna port number includes the first dimension antenna port number And/or the second dimension antenna port number；The N₁Number of antennas including single polarised direction in the first dimension, the N₂Bag Include the number of antennas of single polarised direction in the second dimension.

11. method according to claim 9 or 10, it is characterised in that the W^(r)With with the matrix of drag：

$W^{\left(r\right)}=\left[\begin{array}{cccc}{b}_{i_1}& b_{i_2}& ...& b_{i_r}\\ {\mathrm{\α}}_{i_1}{b}_{i_1}& {\mathrm{\α}}_{i_2}{b}_{i_2}& ...& {\mathrm{\α}}_{i_r}{b}_{i_r}\end{array}\right]$

Wherein i₁,i₂,…,i_rIt is integer,It is plural number, b_kIt is N_t/ 2 × 1 vector, the b_kIn comprising m/2 Neutral element, k=1,2 ..., i_r..., ir, N_tIt is positive integer, m is less than N_tPositive even numbers.

A kind of 12. method of reseptances of channel information, it is characterised in that including：

Order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Code word corresponding with the RI and the PMI is searched from the codebook space for pre-saving according to the RI and the PMI；

Channel information is obtained according to the code word；

Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N> =2, wherein, i-th group of code word is to swap the code word for obtaining, i=to the row in jth group code word in N group code words in N group code words 1st, 2 ... N, j=1,2 ... N, j is not equal to i.

A kind of 13. method of reseptances of channel information, it is characterised in that including：

Order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Code word corresponding with the RI and the PMI is searched from the codebook space for pre-saving according to the RI and the PMI；

Channel information is obtained according to the code word；Wherein, as the RI=7, the codebook space include 1 or multiple with The code word of drag：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ Or,

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_3& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\θb}}_3& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

A kind of 14. method of reseptances of channel information, it is characterised in that including：

Order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Code word corresponding with the RI and the PMI is searched from the codebook space for pre-saving according to the RI and the PMI；

Channel information is obtained according to the code word；Wherein, RI=r, r=1,2 are worked as ..., when 8, it is pre- that the codebook space is included Encoder matrix is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

A kind of 15. dispensing devices of channel information, it is characterised in that including：

Acquisition module, for obtaining channel information；

Determining module, for determining to be matched with the channel information from the codebook space for pre-saving according to the channel information Order designator RI and precoding matrix indicators PMI；

Sending module, for the RI and the PMI to be sent into base station；Wherein, as the RI=r, r=3,4 ... 8, institute The corresponding code books of RI=r are stated including N group code words, N is integer, and N>=2, wherein, i-th group of code word is to N group codes in N group code words Row in word in jth group code word swap the code word for obtaining, and i=1,2 ... N, j=1,2 ... N, j are not equal to i.

A kind of 16. dispensing devices of channel information, it is characterised in that including：

Acquisition module, for obtaining channel information；

Determining module, for determining to be matched with the channel information from the codebook space for pre-saving according to the channel information Order designator RI and precoding matrix indicators PMI；

Sending module, for the RI and the PMI to be sent into base station；Wherein, when in the RI=7, the codebook space Including 1 or multiple with the code word of drag：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ Or,

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_3& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\θb}}_3& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

A kind of 17. dispensing devices of channel information, it is characterised in that including：

Acquisition module, for obtaining channel information；

Determining module, for determining to be matched with the channel information from the codebook space for pre-saving according to the channel information Order designator RI and precoding matrix indicators PMI；

Sending module, for the RI and the PMI to be sent into base station；Wherein, RI=r, r=1,2 are worked as ..., it is described when 8 The pre-coding matrix that codebook space is included is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tJust Integer, N_tIt is positive integer.

A kind of 18. reception devices of channel information, it is characterised in that including：

Receiver module, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul, for being searched from the codebook space for pre-saving and the RI and described according to the RI and the PMI The corresponding code words of PMI；

Acquisition module, for obtaining channel information according to the code word；

Wherein, as the RI=r, r=3,4 ... 8, the corresponding code book of the RI=r include N group code words, and N is integer, and N> =2, wherein, i-th group of code word is to swap the code word for obtaining, i=to the row in jth group code word in N group code words in N group code words 1st, 2 ... N, j=1,2 ... N, j is not equal to i.

A kind of 19. reception devices of channel information, it is characterised in that including：

Receiver module, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul, for being searched from the codebook space for pre-saving and the RI and described according to the RI and the PMI The corresponding code words of PMI；

Acquisition module, for obtaining channel information according to the code word；Wherein, as the RI=7, the codebook space includes 1 or multiple are with the code word of drag：

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_1& b_1& b_2& b_2& b_3\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2& {\mathrm{\θb}}_3\end{array}\right],$ Or,

$W^{\left(7\right)}=\left[\begin{array}{ccccccc}{b}_0& b_0& b_3& b_1& b_1& b_2& b_2\\ {\mathrm{\αb}}_0& -{\mathrm{\αb}}_0& {\mathrm{\θb}}_3& {\mathrm{\βb}}_1& -{\mathrm{\βb}}_1& {\mathrm{\γb}}_2& -{\mathrm{\γb}}_2\end{array}\right],$

Wherein, α, β, γ, θ are plural number, b_iIt is vector, i=0,1,2,3.

A kind of 20. reception devices of channel information, it is characterised in that including：

Receiver module, for order designator RI and precoding matrix indicators PMI that receiving terminal sends；

Searching modul, for being searched from the codebook space for pre-saving and the RI and described according to the RI and the PMI The corresponding code words of PMI；

Acquisition module, for obtaining channel information according to the code word；Wherein, RI=r, r=1,2 are worked as ..., when 8, the code book The pre-coding matrix that space includes is W^(r), W^(r)It is N_t× r matrixes, wherein W^(r)There are m row neutral elements, m is less than N_tPositive integer, N_tIt is positive integer.

21. a kind of terminals, it is characterised in that including the device described in claim 15,16 or 17.

22. a kind of base stations, it is characterised in that including the device described in claim 18,19 or 20.