CN104321983A - Method for transmitting precoding matrix, UE (user equipment) and base station - Google Patents

Method for transmitting precoding matrix, UE (user equipment) and base station Download PDF

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CN104321983A
CN104321983A CN201380001909.2A CN201380001909A CN104321983A CN 104321983 A CN104321983 A CN 104321983A CN 201380001909 A CN201380001909 A CN 201380001909A CN 104321983 A CN104321983 A CN 104321983A
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value
pmi
precoding matrix
codebook
codebook index
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CN104321983B (en
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吴强
张雷鸣
周永行
刘江华
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Huawei Technologies Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636Feedback format
    • H04B7/0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

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  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种传输预编码矩阵的方法、用户设备和基站。该方法包括:在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;确定用于指示该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;向基站发送PMI,该PMI包括用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵。本发明实施例的传输预编码矩阵的方法、用户设备和基站,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。

The invention discloses a method for transmitting a precoding matrix, user equipment and a base station. The method includes: determining a first precoding matrix in a first codebook set, the first codebook set is a subset of a second codebook set, and the precoding matrix included in the second codebook set is determined by the first codebook Index and second codebook index indication; determine the value of the first precoding matrix indication PMI and the value of the second PMI used to indicate the first precoding matrix; send the PMI to the base station, the PMI includes the value used to indicate the first precoding matrix The value of the first PMI and the value of the second PMI of the precoding matrix, so that the base station determines the precoding matrix according to the PMI. The method for transmitting a precoding matrix, the user equipment, and the base station in the embodiments of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the Applied to the performance of dual-polarized antennas, it can improve system performance and enhance user experience.

Description

传输预编码矩阵的方法、用户设备和基站Method for transmitting precoding matrix, user equipment and base station

技术领域technical field

本发明涉及通信领域,尤其涉及通信领域中传输预编码矩阵的方法、用户设备和基站。The present invention relates to the communication field, in particular to a method for transmitting a precoding matrix in the communication field, user equipment and a base station.

背景技术Background technique

多入多出(Multiple Input Multiple Output,简称为“MIMO”)无线系统通过发射波束赋形(BeamForming,简称为“BF”)/预编码以及接收合并,能够得到分集和阵列增益。利用BF或预编码的典型系统接收的信号矢量通常可以由下列等式(1)表示:Multiple Input Multiple Output ("MIMO") wireless systems can obtain diversity and array gain through transmit beamforming (BeamForming, "BF")/precoding and receive combining. The signal vector received by a typical system using BF or precoding can generally be represented by the following equation (1):

y=HVs+n     (1)y=HVs+n (1)

其中,y表示接收的信号矢量,H表示信道矩阵,V表示预编码矩阵,s表示发射的符号矢量,n表示测量噪声。Among them, y represents the received signal vector, H represents the channel matrix, V represents the precoding matrix, s represents the transmitted symbol vector, and n represents the measurement noise.

最优的预编码通常需要发射机完全已知信道状态信息(Channel StateInformation,简称为“CSI”)。常用的方法是用户设备(User Equipment,简称为“UE”)对瞬时CSI进行量化,并反馈给演进基站(evolved NodeB,简称为“eNB”)。在现有的长期演进(Long Term Evolution,简称为“LTE”)系统的第八版本(R8)中,UE反馈的CSI信息可以包括秩指示(RankIndicator,简称为“RI”)、预编码矩阵指示(Precoding Matrix Indicator,简称为“PMI”)和信道质量指示(Channel Quality Indicator,简称为“CQI”)信息等,其中RI和PMI分别指示使用的层数和预编码矩阵。LTE R8的码本主要为单用户MIMO(Single User MIMO,简称为“SU-MIMO”)所设计,其中的预编码矩阵或者码字需要满足8移相键控(8Phase Shift Keying,简称为“8PSK”)约束,从而限制了空间量化的精度,这使得对于多用户MIMO(Multiple User MIMO,简称为“MU-MIMO”)等空间量化精度敏感的传输方式而言,性能将受到严重限制。Optimal precoding usually requires the transmitter to fully know the channel state information (Channel State Information, referred to as "CSI"). A common method is that the user equipment (User Equipment, referred to as "UE") quantizes the instantaneous CSI and feeds it back to the evolved base station (evolved NodeB, referred to as "eNB"). In the eighth release (R8) of the existing Long Term Evolution (referred to as "LTE") system, the CSI information fed back by the UE may include a rank indicator (RankIndicator, referred to as "RI"), a precoding matrix indicator (Precoding Matrix Indicator, referred to as "PMI") and Channel Quality Indicator (Channel Quality Indicator, referred to as "CQI") information, etc., where RI and PMI indicate the number of layers and precoding matrix used respectively. The codebook of LTE R8 is mainly designed for Single User MIMO (Single User MIMO, referred to as "SU-MIMO"), in which the precoding matrix or codeword needs to meet 8 Phase Shift Keying (8Phase Shift Keying, referred to as "8PSK") ”) constraints, thereby limiting the accuracy of spatial quantization, which makes the performance of transmission methods sensitive to spatial quantization accuracy such as Multi-User MIMO (Multiple User MIMO, referred to as "MU-MIMO") will be severely limited.

为了达到更高的系统要求,第三代合作伙伴计划(3rd GenerationPartnership Project,简称为“3GPP”)LTE系统需要进一步增强MU-MIMO的性能,同时该系统还引入了协作多点传输(Coordinated Multi-Point,简称为“CoMP”)技术。目前CoMP技术以单小区反馈作为基础,因而上述两种技术都对反馈性能提出了更高的要求。由于反馈信道容量受限,码本集合大小也因此受限,这对于码本的设计提出了更高的要求。In order to meet higher system requirements, the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as "3GPP") LTE system needs to further enhance the performance of MU-MIMO, and the system also introduces Coordinated Multi-point transmission (Coordinated Multi- Point, referred to as "CoMP") technology. Currently, the CoMP technology is based on single-cell feedback, so both of the above two technologies put forward higher requirements on feedback performance. Since the capacity of the feedback channel is limited, the size of the codebook set is also limited, which puts forward higher requirements for the design of the codebook.

3GPP LTE R8系统采用单一的码本,预编码矩阵通过RI和PMI进行指示。对于4天线而言,RI和PMI与码本中的每个码字的对应关系如下表1所示:The 3GPP LTE R8 system uses a single codebook, and the precoding matrix is indicated by RI and PMI. For 4 antennas, the corresponding relationship between RI and PMI and each codeword in the codebook is shown in Table 1 below:

表1Table 1

其中,表示由矩阵的列集合{s}构成的矩阵,I为4×4的单位阵,un由上表1给出。in, represented by the matrix The matrix composed of the column set {s} of , I is a 4×4 unit matrix, and u n is given in Table 1 above.

在R8的码本中,对于秩(Rank)为1的预编码矩阵,索引为0-7的预编码矩阵是离散傅里叶变换(Discrete Fourier Transform,简称为“DFT”)向量,该DFT向量适用于均匀线阵(Uniform Linear Array,简称为“ULA”)天线。DFT向量指Tⅹ1的预编码矩阵,该DFT向量v通常具有如等式(2)所示的形式:In the R8 codebook, for a precoding matrix with a rank of 1, the precoding matrix with an index of 0-7 is a discrete Fourier transform (Discrete Fourier Transform, referred to as "DFT") vector, the DFT vector Suitable for Uniform Linear Array ("ULA" for short) antenna. The DFT vector refers to the precoding matrix of Tⅹ1, and this DFT vector v usually has the form shown in equation (2):

v=[1 ej2πm/N…ej2π(T-2)m/N ej2π(T-1)m/N]T     (2)v=[1 e j2πm/N …e j2π(T-2)m/N e j2π(T-1)m/N ] T (2)

其中,N、m为整数,且N=2x,x为非负整数,即N为2的x幂次方,并且该DFT向量v的第t个元素为ej2π(t-1)m/N(t=1,2,…,T)。Among them, N and m are integers, and N=2 x , x is a non-negative integer, that is, N is the x power of 2, and the tth element of the DFT vector v is e j2π(t-1)m/ N (t=1, 2, ..., T).

在3GPP LTE系统的第十版本(R10)中,8天线采用的码本由两组DFT向量vm组成,这两组DFT向量之间存在相位差其中DFT向量vm和相位差由下列等式(3)表示:In the tenth release (R10) of the 3GPP LTE system, the codebook used by the 8 antennas consists of two sets of DFT vectors v m , and there is a phase difference between the two sets of DFT vectors where the DFT vector v m and the phase difference Expressed by the following equation (3):

下面给出了8天线的码本结构,该码本结构是按照双极化天线来设计的,其中,表2示出了秩为1(即传输层数为1层)的8天线码本;表3示出了秩为2(即传输层数为2层)的8天线码本;表4示出了秩为3(即传输层数为3层)的8天线码本;表5示出了秩为4(即传输层数为4层)的8天线码本。The codebook structure of 8 antennas is given below, and the codebook structure is designed according to the dual-polarized antennas, where Table 2 shows the 8-antenna codebook with rank 1 (that is, the number of transmission layers is 1); Table 3 shows the 8-antenna codebook with rank 2 (that is, the number of transmission layers is 2); Table 4 shows the 8-antenna codebook with rank 3 (that is, the number of transmission layers is 3); Table 5 shows An 8-antenna codebook with a rank of 4 (that is, the number of transmission layers is 4) is obtained.

表2Table 2

表3table 3

表4Table 4

表5table 5

基于8天线的码本结构设计方案,通过对DFT向量v进行适当修改,可以得到秩为1和2的4天线码本。但对于秩为3和4的4天线码本,由于基于8天线的码本结构设计方案不能保证预编码矩阵的各列的正交性,因而不能基于3GPP LTE R10系统的8天线码本获得。Based on the 8-antenna codebook structure design scheme, 4-antenna codebooks with ranks 1 and 2 can be obtained by modifying the DFT vector v appropriately. But for the 4-antenna codebooks with ranks 3 and 4, since the 8-antenna-based codebook structure design scheme cannot guarantee the orthogonality of each column of the precoding matrix, it cannot be obtained based on the 8-antenna codebook of the 3GPP LTE R10 system.

8天线的预编码矩阵的索引可以由第一码本索引i1和第二码本索引i2表示,对于秩为1的8天线码本,第一码本索引i1和第二码本索引i2都需要4个比特来表示。为了能够节省反馈资源的开销,PMI可以用4个比特来表示,这就需要对PMI或8天线码本进行下采样(subsampling),其中,8天线的物理上行链路控制信道(Physical Uplink Control Channel,简称为“PUCCH”)模式1-1的子模式2下采样码本如表6所示。The index of the precoding matrix of 8 antennas can be represented by the first codebook index i 1 and the second codebook index i 2 , and for the 8-antenna codebook with rank 1, the first codebook index i 1 and the second codebook index Both i and 2 need 4 bits to represent. In order to save the overhead of feedback resources, PMI can be represented by 4 bits, which requires downsampling (subsampling) of PMI or 8-antenna codebook, where the 8-antenna physical uplink control channel (Physical Uplink Control Channel , referred to as “PUCCH” for short) sub-mode 2 downsampling codebook of mode 1-1 is shown in Table 6.

表6Table 6

对于4天线增强码本,为了在增强系统性能的同时,不增加码本设计和反馈的复杂性,可以沿用8天线的码本结构设计方案,并且预编码矩阵的索引也可以由第一码本索引i1和第二码本索引i2表示。为了能够节省反馈资源的开销,PMI也可以用4个比特来表示,这也需要对PMI或4天线码本进行下采样(subsampling)。For the 4-antenna enhanced codebook, in order to enhance the system performance without increasing the complexity of codebook design and feedback, the 8-antenna codebook structure design scheme can be used, and the index of the precoding matrix can also be determined by the first codebook Index i 1 and the second codebook index i 2 represent. In order to save the overhead of feedback resources, the PMI can also be represented by 4 bits, which also requires downsampling (subsampling) on the PMI or the 4-antenna codebook.

然而,对于基于8天线码本结构的4天线增强码本而言,模式为PUCCH模式1-1的子模式2时,沿用如表6所示的8天线下采样码本进行码本下采样后,当秩为1时,预编码矩阵只有4个DFT向量,而R8系统的4天线码本有8个DFT向量。因而,当配置的天线为均匀线阵ULA天线时,4天线增强码本在PUCCH模式1-1的子模式2中,适用于ULA天线的预编码矩阵少于R8系统的预编码矩阵,性能损失严重。However, for the 4-antenna enhanced codebook based on the 8-antenna codebook structure, when the mode is submode 2 of PUCCH mode 1-1, the 8-antenna downsampling codebook shown in Table 6 is used for codebook downsampling , when the rank is 1, the precoding matrix has only 4 DFT vectors, while the 4-antenna codebook of the R8 system has 8 DFT vectors. Therefore, when the configured antenna is a uniform linear array ULA antenna, the 4-antenna enhanced codebook in sub-mode 2 of PUCCH mode 1-1, the precoding matrix applicable to the ULA antenna is less than the precoding matrix of the R8 system, and the performance loss serious.

发明内容Contents of the invention

本发明实施例提供了一种传输预编码矩阵的方法、用户设备和基站,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵。Embodiments of the present invention provide a method for transmitting a precoding matrix, user equipment and a base station, which can indicate more precoding matrices suitable for uniform linear array antennas without changing feedback modes and feedback bits.

第一方面,提供了一种传输预编码矩阵的方法,该方法包括:在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;确定用于指示该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;向基站发送PMI,该PMI包括用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。In a first aspect, a method for transmitting a precoding matrix is provided, the method comprising: determining a first precoding matrix in a first codebook set, the first codebook set being a subset of the second codebook set, the The precoding matrix included in the second codebook set is indicated by the first codebook index and the second codebook index; determining the value of the first precoding matrix indicating the PMI and the value of the second PMI used to indicate the first precoding matrix ; sending a PMI to the base station, where the PMI includes the value of the first PMI and the value of the second PMI used to indicate the first precoding matrix, so that the base station can determine the precoding matrix according to the PMI; wherein, the first The value of a PMI has a first correspondence relationship with the value of the first codebook index, the value of the second PMI has a second correspondence relationship with the value of the second codebook index, and the first PMI corresponds to the first The value range of the codebook index is associated with the value range of the second codebook index corresponding to the second PMI.

结合第一方面,在第一方面的第一种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。With reference to the first aspect, in a first possible implementation manner of the first aspect, the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI The value range has an association relationship, including: the value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

结合第一方面,在第一方面的第二种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。With reference to the first aspect, in a second possible implementation of the first aspect, the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI The value range has an association relationship, including: the value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the second PMI corresponds to the second codebook index The value range of the index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

结合第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现方式中,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。With reference to the second possible implementation of the first aspect, in a third possible implementation of the first aspect, each first value set in the at least two first value sets includes at least two value, each of the at least two second value sets includes at least two values.

结合第一方面,在第一方面的第四种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。With reference to the first aspect, in a fourth possible implementation of the first aspect, the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the The number of bits of the value of the second PMI.

结合第一方面,在第一方面的第五种可能的实现方式中,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。With reference to the first aspect, in a fifth possible implementation of the first aspect, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is The first codebook set includes half of the number of precoding matrices.

结合第一方面或第一方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第一方面的第六种可能的实现方式中,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In combination with the first aspect or any possible implementation manner of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the first PMI, the The values of the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33

66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

结合第一方面的第六种可能的实现方式,在第一方面的第七种可能的实现方式中,该第二码本集合包括的预编码矩阵W由表A2确定:With reference to the sixth possible implementation of the first aspect, in the seventh possible implementation of the first aspect, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

结合第一方面或第一方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第一方面的第八种可能的实现方式中,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In combination with the first aspect or any one of the first to fifth possible implementations of the first aspect, in an eighth possible implementation of the first aspect, the first codebook set The included precoding matrix is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas with a rank of 1.

结合第一方面或第一方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第一方面的第九种可能的实现方式中,该向基站发送PMI,包括:在一个上行信道上向该基站发送该PMI。With reference to the first aspect or any possible implementation manner of the first to fifth possible implementation manners of the first aspect, in a ninth possible implementation manner of the first aspect, in sending the PMI to the base station, It includes: sending the PMI to the base station on an uplink channel.

第二方面,提供了一种传输预编码矩阵的方法,该方法包括:在第一码本集合中确定第一预编码矩阵,该第一码本集合为应用于四天线的第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;确定用于指示该第一预编码矩阵的联合编码值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;向基站发送包括该联合编码值的预编码矩阵指示PMI,以便于该基站根据该PMI确定该第一预编码矩阵。In a second aspect, a method for transmitting a precoding matrix is provided, the method comprising: determining a first precoding matrix in a first codebook set, the first codebook set being a second codebook set applied to four antennas A subset of , the precoding matrix included in the second codebook set is indicated by the first codebook index and the second codebook index; determine the joint encoding value used to indicate the first precoding matrix, wherein the joint encoding value There is a first correspondence relationship with the rank of the first precoding matrix, the joint encoding value has a second correspondence relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5; sending the precoding matrix indication PMI including the joint encoding value to the base station, so that the base station determines the first precoding matrix according to the PMI.

结合第二方面,在第二方面的第一种可能的实现方式中,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:With reference to the second aspect, in the first possible implementation manner of the second aspect, when the number of bits carrying the joint coding value is 4, the rank sum of the joint coding value and the first precoding matrix is the sum of the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

结合第二方面或第二方面的第一种可能的实现方式,在第二方面的第二种可能的实现方式中,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:With reference to the second aspect or the first possible implementation of the second aspect, in the second possible implementation of the second aspect, when the number of bits carrying the joint coding value is 5, the joint coding value and The corresponding relationship between the rank of the first precoding matrix and the value of the first codebook index is determined by the following table B4 or table B5:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1

16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

第七方面,提供了一种传输预编码矩阵的方法,该方法包括:接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;根据该第一PMI的值和该第二PMI的值,确定第一码本索引的值和第二码本索引的值,该第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,该第一码本集合为该第二码本集合的子集;根据该第一码本索引的值和该第二码本索引的值,在该第二码本集合中确定该第一预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI的值相应的该第二码本索引的取值范围具有关联关系。In a seventh aspect, a method for transmitting a precoding matrix is provided, the method including: receiving a precoding matrix indication PMI sent by a user equipment, where the PMI includes the first precoding matrix used to indicate the first precoding matrix in the first codebook set. A value of the PMI and a value of the second PMI; according to the value of the first PMI and the value of the second PMI, determine the value of the first codebook index and the value of the second codebook index, the first codebook index and the value of the second codebook index The second codebook index is used to indicate the precoding matrix in the second codebook set, the first codebook set is a subset of the second codebook set; according to the value of the first codebook index and the second codebook The value of this index is to determine the first precoding matrix in the second codebook set; wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, and the value of the second PMI There is a second corresponding relationship with the value of the second codebook index, and the value range of the first codebook index corresponding to the first PMI is the value of the second codebook index corresponding to the value of the second PMI Ranges are associated.

结合第七方面,在第七方面的第一种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI The value range has an association relationship, including: the value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

结合第七方面,在第七方面的第二种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。With reference to the seventh aspect, in a second possible implementation manner of the seventh aspect, the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI The value range has an association relationship, including: the value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the second PMI corresponds to the second codebook index The value range of the index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

结合第七方面的第二种可能的实现方式,在第七方面的第三种可能的实现方式中,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。With reference to the second possible implementation of the seventh aspect, in a third possible implementation of the seventh aspect, each of the at least two first value sets includes at least two value, each of the at least two second value sets includes at least two values.

结合第七方面,在第七方面的第四种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。With reference to the seventh aspect, in a fourth possible implementation of the seventh aspect, the number of values included in the value range of the second codebook index corresponding to the second PMI is greater than 2 N , where N is the The number of bits of the value of the second PMI.

结合第七方面,在第七方面的第五种可能的实现方式中,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。With reference to the seventh aspect, in a fifth possible implementation of the seventh aspect, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is The first codebook set includes half of the number of precoding matrices.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第六种可能的实现方式中,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In combination with the seventh aspect or any one of the first to fifth possible implementations of the seventh aspect, in a sixth possible implementation of the seventh aspect, the first PMI, the The values of the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11

77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

结合第七方面的第六种可能的实现方式,在第七方面的第七种可能的实现方式中,该第二码本集合包括的预编码矩阵W由表A2确定:With reference to the sixth possible implementation of the seventh aspect, in the seventh possible implementation of the seventh aspect, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第八种可能的实现方式中,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In combination with the seventh aspect or any one of the first to fifth possible implementations of the seventh aspect, in the eighth possible implementation of the seventh aspect, the first codebook set The included precoding matrix is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas with a rank of 1.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第九种可能的实现方式中,该接收用户设备发送的预编码矩阵指示PMI,包括:在一个上行信道上接收该用户设备发送的该PMI。With reference to the seventh aspect or any possible implementation manner of the first to fifth possible implementation manners of the seventh aspect, in a ninth possible implementation manner of the seventh aspect, the receiving The precoding matrix indicating the PMI includes: receiving the PMI sent by the user equipment on an uplink channel.

第四方面,提供了一种传输预编码矩阵的方法,该方法包括:接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;根据该联合编码值,确定该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;根据该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定该第一预编码矩阵,该第一码本集合为该第二码本集合的子集。In a fourth aspect, a method for transmitting a precoding matrix is provided, the method including: receiving a precoding matrix indication PMI sent by a user equipment, where the PMI includes a joint code used to indicate a first precoding matrix in a first codebook set An encoding value; according to the joint encoding value, determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, wherein the joint encoding value and the rank of the first precoding matrix have the same The first correspondence relationship, the joint encoding value has a second correspondence relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5; according to the first The rank of the precoding matrix and the value of the first codebook index of the first precoding matrix, the first precoding matrix is determined in the second codebook set applied to four antennas, the first codebook set is the first codebook set A subset of the binary codebook set.

结合第四方面,在第四方面的第一种可能的实现方式中,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:With reference to the fourth aspect, in the first possible implementation manner of the fourth aspect, when the number of bits carrying the joint encoding value is 4, the rank sum of the joint encoding value and the first precoding matrix sums the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

结合第四方面或第四方面的第一种可能的实现方式,在第四方面的第二种可能的实现方式中,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:In combination with the fourth aspect or the first possible implementation of the fourth aspect, in the second possible implementation of the fourth aspect, when the number of bits carrying the joint coding value is 5, the joint coding value and The corresponding relationship between the rank of the first precoding matrix and the value of the first codebook index is determined by the following table B4 or table B5:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

第五方面,提供了一种用户设备,该用户设备包括:第一确定模块,用于在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;第二确定模块,用于确定用于指示该第一确定模块确定的该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;发送模块,用于向基站发送PMI,该PMI包括该第二确定模块确定的用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。In a fifth aspect, there is provided a user equipment, the user equipment includes: a first determining module, configured to determine a first precoding matrix in a first codebook set, the first codebook set being the second codebook set A subset, the precoding matrix included in the second codebook set is indicated by a first codebook index and a second codebook index; a second determination module is configured to determine the first precoding matrix determined by the first determination module The first precoding matrix of the coding matrix indicates the value of the PMI and the value of the second PMI; the sending module is configured to send the PMI to the base station, and the PMI includes the value determined by the second determining module for indicating the first precoding matrix The value of the first PMI and the value of the second PMI, so that the base station determines the precoding matrix according to the PMI; wherein, the value of the first PMI and the value of the first codebook index have a first correspondence relationship, the The value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the value range of the first codebook index corresponding to the first PMI is the second codebook index corresponding to the second PMI The value range of has an association relationship.

结合第五方面,在第五方面的第一种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。With reference to the fifth aspect, in a first possible implementation of the fifth aspect, the value range of the second codebook index corresponding to the second PMI is determined by the value range of the first codebook index corresponding to the first PMI The value and/or value range is uniquely determined.

结合第五方面,在第五方面的第二种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。With reference to the fifth aspect, in a second possible implementation of the fifth aspect, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets whose elements are different from each other, The value range of the second codebook index corresponding to the second PMI includes at least two second value sets whose elements are different from each other, the at least two first value sets and the at least two second value sets have a one-to-one correspondence.

结合第五方面的第二种可能的实现方式,在第五方面的第三种可能的实现方式中,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。With reference to the second possible implementation of the fifth aspect, in a third possible implementation of the fifth aspect, each of the at least two first value sets includes at least two first value sets value, each of the at least two second value sets includes at least two values.

结合第五方面,在第五方面的第四种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。With reference to the fifth aspect, in a fourth possible implementation of the fifth aspect, the number of values included in the value range of the second codebook index corresponding to the second PMI is greater than 2 N , where N is the The number of bits of the value of the second PMI.

结合第五方面,在第五方面的第五种可能的实现方式中,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。With reference to the fifth aspect, in a fifth possible implementation of the fifth aspect, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is The first codebook set includes half of the number of precoding matrices.

结合第五方面或第五方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第五方面的第六种可能的实现方式中,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In combination with the fifth aspect or any of the first to fifth possible implementations of the fifth aspect, in a sixth possible implementation of the fifth aspect, the first PMI, the The values of the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

结合第五方面的第六种可能的实现方式,在第五方面的第七种可能的实现方式中,该第二码本集合包括的预编码矩阵W由表A2确定:With reference to the sixth possible implementation of the fifth aspect, in the seventh possible implementation of the fifth aspect, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[ 1ej2πm/32]Tm和n为非负整数。in, v m =[ 1e j2πm/32 ] T , m and n are non-negative integers.

结合第五方面或第五方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第五方面的第八种可能的实现方式中,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In combination with the fifth aspect or any possible implementation manner of the first to fifth possible implementation manners of the fifth aspect, in an eighth possible implementation manner of the fifth aspect, the first codebook set The included precoding matrix is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas with a rank of 1.

结合第五方面或第五方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第五方面的第九种可能的实现方式中,该发送模块具体用于:在一个上行信道上向该基站发送该PMI。In combination with the fifth aspect or any one of the first to fifth possible implementations of the fifth aspect, in a ninth possible implementation of the fifth aspect, the sending module is specifically configured to: : sending the PMI to the base station on an uplink channel.

第六方面,提供了一种用户设备,该用户设备包括:第一确定模块,用于在第一码本集合中确定第一预编码矩阵,该第一码本集合为应用于四天线的第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;第二确定模块,用于确定用于指示该第一确定模块确定的该第一预编码矩阵的联合编码值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;发送模块,用于向基站发送预编码矩阵指示PMI,该PMI包括该第二确定模块确定的该联合编码值,以便于该基站根据该PMI确定该第一预编码矩阵。In a sixth aspect, a user equipment is provided, the user equipment includes: a first determining module, configured to determine a first precoding matrix in a first codebook set, where the first codebook set is the first precoding matrix applied to four antennas A subset of the second codebook set, the precoding matrix included in the second codebook set is indicated by the first codebook index and the second codebook index; the second determination module is used to determine and instruct the first determination module to determine The joint encoding value of the first precoding matrix, wherein the joint encoding value has a first corresponding relationship with the rank of the first precoding matrix, and the joint encoding value and the first codebook index of the first precoding matrix The value of has a second corresponding relationship, and the number of bits carrying the joint coding value is 4 or 5; the sending module is used to send the precoding matrix indication PMI to the base station, and the PMI includes the joint code determined by the second determining module encoding values, so that the base station determines the first precoding matrix according to the PMI.

结合第六方面,在第六方面的第一种可能的实现方式中,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:With reference to the sixth aspect, in the first possible implementation manner of the sixth aspect, when the number of bits carrying the joint encoding value is 4, the rank sum of the joint encoding value and the first precoding matrix sums the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

结合第六方面或第六方面的第一种可能的实现方式,在第六方面的第二种可能的实现方式中,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:With reference to the sixth aspect or the first possible implementation of the sixth aspect, in the second possible implementation of the sixth aspect, when the number of bits carrying the joint coding value is 5, the joint coding value and The corresponding relationship between the rank of the first precoding matrix and the value of the first codebook index is determined by the following table B4 or table B5:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

第七方面,提供了一种基站,该基站包括:接收模块,用于接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;第一确定模块,用于根据该接收模块接收的该第一PMI的值和该第二PMI的值,确定第一码本索引的值和第二码本索引的值,该第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,该第一码本集合为该第二码本集合的子集;第二确定模块,用于根据该第一确定模块确定的该第一码本索引的值和该第二码本索引的值,在该第二码本集合中确定该第一预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI的值相应的该第二码本索引的取值范围具有关联关系。In a seventh aspect, a base station is provided, and the base station includes: a receiving module, configured to receive a precoding matrix indication PMI sent by a user equipment, where the PMI includes the first precoding matrix used to indicate the first precoding matrix in the first codebook set. A value of the PMI and a value of the second PMI; a first determination module, configured to determine the value of the first codebook index and the second code according to the value of the first PMI and the value of the second PMI received by the receiving module The value of this index, the first codebook index and the second codebook index are used to indicate the precoding matrix in the second codebook set, the first codebook set is a subset of the second codebook set; the second A determining module, configured to determine the first precoding matrix in the second codebook set according to the value of the first codebook index and the value of the second codebook index determined by the first determining module; wherein, the The value of the first PMI has a first correspondence with the value of the first codebook index, the value of the second PMI has a second correspondence with the value of the second codebook index, and the first PMI corresponds to the first codebook index The value range of a codebook index is associated with the value range of the second codebook index corresponding to the value of the second PMI.

结合第七方面,在第七方面的第一种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the value range of the second codebook index corresponding to the second PMI is determined by the value range of the first codebook index corresponding to the first PMI The value and/or value range is uniquely determined.

结合第七方面,在第七方面的第二种可能的实现方式中,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。With reference to the seventh aspect, in a second possible implementation manner of the seventh aspect, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets whose elements are different from each other, The value range of the second codebook index corresponding to the second PMI includes at least two second value sets whose elements are different from each other, the at least two first value sets and the at least two second value sets have a one-to-one correspondence.

结合第七方面的第二种可能的实现方式,在第七方面的第三种可能的实现方式中,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。With reference to the second possible implementation of the seventh aspect, in a third possible implementation of the seventh aspect, each of the at least two first value sets includes at least two value, each of the at least two second value sets includes at least two values.

结合第七方面,在第七方面的第四种可能的实现方式中,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。With reference to the seventh aspect, in a fourth possible implementation of the seventh aspect, the number of values included in the value range of the second codebook index corresponding to the second PMI is greater than 2 N , where N is the The number of bits of the value of the second PMI.

结合第七方面,在第七方面的第五种可能的实现方式中,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。With reference to the seventh aspect, in a fifth possible implementation of the seventh aspect, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is The first codebook set includes half of the number of precoding matrices.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第六种可能的实现方式中,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In combination with the seventh aspect or any one of the first to fifth possible implementations of the seventh aspect, in a sixth possible implementation of the seventh aspect, the first PMI, the The values of the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

结合第七方面的第六种可能的实现方式,在第七方面的第七种可能的实现方式中,该第二码本集合包括的预编码矩阵W由表A2确定:With reference to the sixth possible implementation of the seventh aspect, in the seventh possible implementation of the seventh aspect, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第八种可能的实现方式中,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In combination with the seventh aspect or any one of the first to fifth possible implementations of the seventh aspect, in the eighth possible implementation of the seventh aspect, the first codebook set The included precoding matrix is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas with a rank of 1.

结合第七方面或第七方面的第一种至第五种可能的实现方式中的任一种可能的实现方式,在第七方面的第九种可能的实现方式中,该接收模块具体用于:在一个上行信道上接收该用户设备发送的该PMI。In combination with the seventh aspect or any one of the first to fifth possible implementations of the seventh aspect, in a ninth possible implementation of the seventh aspect, the receiving module is specifically used to: : receiving the PMI sent by the user equipment on an uplink channel.

第八方面,提供了一种基站,该基站包括:接收模块,用于接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;第一确定模块,用于根据该接收模块接收的该联合编码值,确定该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;第二确定模块,用于根据该第一确定模块确定的该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定该第一预编码矩阵,该第一码本集合为该第二码本集合的子集。In an eighth aspect, there is provided a base station, the base station includes: a receiving module, configured to receive a precoding matrix indication PMI sent by a user equipment, where the PMI includes a combination used to indicate the first precoding matrix in the first codebook set Encoding value; a first determining module, configured to determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix according to the joint encoding value received by the receiving module, wherein the joint The encoding value has a first corresponding relationship with the rank of the first precoding matrix, the joint encoding value has a second corresponding relationship with the value of the first codebook index of the first precoding matrix, and carries bits of the joint encoding value The number is 4 or 5; the second determination module is used to determine the rank of the first precoding matrix according to the first determination module and the value of the first codebook index of the first precoding matrix, when applied to The first precoding matrix is determined in a second codebook set of four antennas, and the first codebook set is a subset of the second codebook set.

结合第八方面,在第八方面的第一种可能的实现方式中,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:With reference to the eighth aspect, in the first possible implementation manner of the eighth aspect, when the number of bits carrying the joint encoding value is 4, the rank sum of the joint encoding value and the first precoding matrix sums the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1

0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

结合第八方面或第八方面的第一种可能的实现方式,在第八方面的第二种可能的实现方式中,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:With reference to the eighth aspect or the first possible implementation of the eighth aspect, in the second possible implementation of the eighth aspect, when the number of bits carrying the joint coding value is 5, the joint coding value and The corresponding relationship between the rank of the first precoding matrix and the value of the first codebook index is determined by the following table B4 or table B5:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1

8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

基于上述技术方案,本发明实施例的传输预编码矩阵的方法、用户设备和基站,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Based on the above technical solution, the method for transmitting a precoding matrix, the user equipment, and the base station in the embodiments of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, And it can ensure that the performance applied to the dual-polarization antenna is not affected, thereby improving system performance and enhancing user experience.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required in the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

图1是根据本发明实施例的传输预编码矩阵的方法的示意性流程图。Fig. 1 is a schematic flowchart of a method for transmitting a precoding matrix according to an embodiment of the present invention.

图2是根据本发明实施例的传输预编码矩阵的方法的另一示意性流程图。Fig. 2 is another schematic flowchart of a method for transmitting a precoding matrix according to an embodiment of the present invention.

图3是根据本发明实施例的传输预编码矩阵的方法的再一示意性流程图。Fig. 3 is another schematic flowchart of a method for transmitting a precoding matrix according to an embodiment of the present invention.

图4是根据本发明实施例的传输预编码矩阵的方法的再一示意性流程图。Fig. 4 is another schematic flowchart of a method for transmitting a precoding matrix according to an embodiment of the present invention.

图5是根据本发明实施例的用户设备的示意性框图。Fig. 5 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

图6是根据本发明实施例的用户设备的另一示意性框图。Fig. 6 is another schematic block diagram of user equipment according to an embodiment of the present invention.

图7是根据本发明实施例的基站的示意性框图。Fig. 7 is a schematic block diagram of a base station according to an embodiment of the present invention.

图8是根据本发明实施例的基站的另一示意性框图。Fig. 8 is another schematic block diagram of a base station according to an embodiment of the present invention.

图9是根据本发明实施例的用户设备的再一示意性框图。Fig. 9 is still another schematic block diagram of user equipment according to an embodiment of the present invention.

图10是根据本发明实施例的用户设备的再一示意性框图。Fig. 10 is still another schematic block diagram of user equipment according to an embodiment of the present invention.

图11是根据本发明实施例的基站的再一示意性框图。Fig. 11 is another schematic block diagram of a base station according to an embodiment of the present invention.

图12是根据本发明实施例的基站的再一示意性框图。Fig. 12 is another schematic block diagram of a base station according to an embodiment of the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

应理解,本发明实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,简称为“GSM”)系统、码分多址(Code Division Multiple Access,简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access,简称为“WCDMA”)系统、通用分组无线业务(General Packet Radio Service,简称为“GPRS”)、长期演进(Long Term Evolution,简称为“LTE”)系统、LTE频分双工(FrequencyDivision Duplex,简称为“FDD”)系统、LTE时分双工(Time Division Duplex,简称为“TDD”)、通用移动通信系统(Universal Mobile TelecommunicationSystem,简称为“UMTS”)或全球互联微波接入(Worldwide Interoperabilityfor Microwave Access,简称为“WiMAX”)通信系统等。It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, referred to as "GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "CDMA") system, Wideband Code Division Multiple Access (WCDMA for short) system, General Packet Radio Service (GPRS for short), Long Term Evolution (Long Term Evolution, Referred to as "LTE") system, LTE Frequency Division Duplex (Frequency Division Duplex, referred to as "FDD") system, LTE Time Division Duplex (Time Division Duplex, referred to as "TDD"), Universal Mobile Telecommunications System (Universal Mobile Telecommunication System, “UMTS” for short) or Worldwide Interoperability for Microwave Access (WiMAX for short) communication system, etc.

还应理解,在本发明实施例中,用户设备(User Equipment,简称为“UE”)可称之为终端(Terminal)、移动台(Mobile Station,简称为“MS”)或移动终端(Mobile Terminal)等,该用户设备可以经无线接入网(Radio AccessNetwork,简称为“RAN”)与一个或多个核心网进行通信,例如,用户设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等,例如,用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语音和/或数据。It should also be understood that in the embodiment of the present invention, a user equipment (User Equipment, referred to as "UE") may be called a terminal (Terminal), a mobile station (Mobile Station, referred to as "MS") or a mobile terminal (Mobile Terminal ), etc., the user equipment can communicate with one or more core networks via the radio access network (Radio Access Network, referred to as "RAN"), for example, the user equipment can be a mobile phone (or called a "cellular" phone) or Computers with mobile terminals, etc., for example, user equipment can also be portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange voice and/or data with the wireless access network.

在本发明实施例中,基站可以是GSM或CDMA中的基站(BaseTransceiver Station,简称为“BTS”),也可以是WCDMA中的基站(NodeB,简称为“NB”),还可以是LTE中的演进型基站(Evolutional Node B,简称为“ENB或e-NodeB”),本发明并不限定,但为描述方便,下述实施例将以ENB为例进行说明。In the embodiment of the present invention, the base station may be a base station (Base Transceiver Station, referred to as "BTS") in GSM or CDMA, or a base station (NodeB, referred to as "NB") in WCDMA, or a base station in LTE. An evolved base station (Evolutional Node B, referred to as "ENB or e-NodeB") is not limited in the present invention, but for the convenience of description, the following embodiments will use ENB as an example for illustration.

图1示出了根据本发明实施例的传输预编码矩阵的方法100的示意性流程图,该方法100例如可以由用户设备执行。该方法100包括:Fig. 1 shows a schematic flowchart of a method 100 for transmitting a precoding matrix according to an embodiment of the present invention, and the method 100 may be executed, for example, by a user equipment. The method 100 includes:

S110,在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;S110. Determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set, and the precoding matrix included in the second codebook set is determined by the first codebook index and The second codebook index indication;

S120,确定用于指示该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;S120. Determine a value of a first precoding matrix indication PMI and a value of a second PMI used to indicate the first precoding matrix;

S130,向基站发送PMI,该PMI包括用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵;S130. Send a PMI to the base station, where the PMI includes a value of the first PMI and a value of the second PMI used to indicate the first precoding matrix, so that the base station determines the precoding matrix according to the PMI;

其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the first PMI corresponds to The value range of the first codebook index is associated with the value range of the second codebook index corresponding to the second PMI.

因此,本发明实施例的传输预编码矩阵的方法,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the method for transmitting a precoding matrix in the embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, and can be used in Without changing the feedback mode and feedback bits, indicate more precoding matrices suitable for uniform linear array antennas, and ensure that the performance applied to dual-polarized antennas will not be affected, thereby improving system performance and enhancing user experience .

具体而言,在S110中,用户设备UE例如可以基于信道状态信息(ChannelState Information,简称为“CSI”),在第一码本集合中确定UE期望基站eNB发送下行数据时使用的第一预编码矩阵。该第一码本集合可以由第一预编码矩阵指示PMI IPMI1以及第二预编码矩阵指示PMI IPMI2指示,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵可以由第一码本索引i1和第二码本索引i2指示。Specifically, in S110, the user equipment UE may, for example, determine the first precoding used when the UE expects the base station eNB to send downlink data in the first codebook set based on channel state information (ChannelState Information, referred to as "CSI") matrix. The first codebook set may be indicated by the first precoding matrix indication PMI I PMI1 and the second precoding matrix indication PMI I PMI2 , the first codebook set is a subset of the second codebook set, the second codebook The precoding matrices included in the set may be indicated by a first codebook index i1 and a second codebook index i2 .

在本发明实施例中,该第一PMI IPMI1的值与该第一码本索引i1的值可以具有第一对应关系,该第一对应关系可以是函数关系,也可以是映射关系,例如i1=2*IPMI1;该第二PMI IPMI2的值与该第二码本索引i2的值可以具有第二对应关系,该第二对应关系可以是函数关系,也可以是映射关系,例如,第二PMI IPMI2的值用于指示第二码本索引i2的取值范围中的取值序号等。In this embodiment of the present invention, the value of the first PMI I PMI1 and the value of the first codebook index i1 may have a first correspondence, and the first correspondence may be a functional relationship or a mapping relationship, for example i 1 =2*I PMI1 ; the value of the second PMI I PMI2 and the value of the second codebook index i 2 may have a second correspondence, and the second correspondence may be a functional relationship or a mapping relationship, For example, the value of the second PMI1 PMI2 is used to indicate the value sequence number in the value range of the second codebook index i2 , and the like.

在本发明实施例中,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。可选地,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。In this embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI. Optionally, the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI, including: the value range of the second codebook index corresponding to the second PMI The value range of the second codebook index is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

以第一码本集合包括由表7所示的第一码本索引i1和第二码本索引i2指示的预编码矩阵为例进行说明。Take the example that the first codebook set includes the precoding matrix indicated by the first codebook index i1 and the second codebook index i2 shown in Table 7 for illustration.

表7Table 7

i1=2*IPMI1 i 1 =2*I PMI1 i2(IPMI2i 2 (I PMI2 ) DFT向量DFT vector 0(m=0),IPMI1=00(m=0), I PMI1 =0 0(IPMI2=0)0 ( IPMI2 =0) yes 0(m=0),IPMI1=00(m=0), I PMI1 =0 2(IPMI2=1)2 ( IPMI2 =1) no 2(m=4),IPMI1=12(m=4), I PMI1 =1 1(IPMI2=0)1 ( IPMI2 =0) yes 2(m=4),IPMI1=12(m=4), I PMI1 =1 3(IPMI2=1)3 ( IPMI2 =1) no 4(m=8),IPMI1=24(m=8), I PMI1 =2 0(IPMI2=0)0 ( IPMI2 =0) no 4(m=8),IPMI1=24(m=8), I PMI1 =2 2(IPMI2=1)2 ( IPMI2 =1) yes 6(m=12),IPMI1=36(m=12), I PMI1 =3 1(IPMI2=0)1 ( IPMI2 =0) no 6(m=12),IPMI1=36(m=12), I PMI1 =3 3(IPMI2=1)3 ( IPMI2 =1) yes 8(m=16),IPMI1=48(m=16), I PMI1 =4 0(IPMI2=0)0 ( IPMI2 =0) yes 8(m=16),IPMI1=48(m=16), I PMI1 =4 2(IPMI2=1)2 ( IPMI2 =1) no 10(m=20),IPMI1=510(m=20), I PMI1 =5 1(IPMI2=0)1 ( IPMI2 =0) yes 10(m=20),IPMI1=510(m=20), I PMI1 =5 3(IPMI2=1)3 ( IPMI2 =1) no 12(m=24),IPMI1=612(m=24), I PMI1 =6 0(IPMI2=0)0 ( IPMI2 =0) no 12(m=24),IPMI1=612(m=24), I PMI1 =6 2(IPMI2=1)2 ( IPMI2 =1) yes 14(m=28),IPMI1=714(m=28), I PMI1 =7 1(IPMI2=0)1 ( IPMI2 =0) no 14(m=28),IPMI1=714(m=28), I PMI1 =7 3(IPMI2=1)3 ( IPMI2 =1) yes

如表7所示,当第一PMI IPMI1的取值范围为(0,2,4,6)时,该第一PMI相应的第一码本索引i1的取值范围为(0,4,8,12),此时,该第二PMI IPMI2相应的该第二码本索引i2的取值范围为(0,2);当第一PMI IPMI1的取值范围为(1,3,5,7)时,该第一PMI相应的第一码本索引i1的取值范围为(2,6,10,14),此时,该第二PMI IPMI2相应的该第二码本索引i2的取值范围为(1,3)。As shown in Table 7, when the value range of the first PMI I PMI1 is (0, 2, 4, 6), the value range of the first codebook index i 1 corresponding to the first PMI is (0, 4 , 8, 12), at this time, the value range of the second codebook index i 2 corresponding to the second PMI I PMI2 is (0, 2); when the value range of the first PMI I PMI1 is (1, 3, 5, 7), the value range of the first codebook index i 1 corresponding to the first PMI is (2, 6, 10, 14), at this time, the second PMI I PMI2 corresponds to the second The value range of the codebook index i 2 is (1, 3).

因此,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定,即该第二PMI相应的该第二码本索引的取值范围由该第一PMI的取值和/或取值范围唯一确定。Therefore, the value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI, that is, the value range corresponding to the second PMI The value range of the second codebook index is uniquely determined by the value and/or value range of the first PMI.

例如,当该第一PMI的取值为0时,或该第一PMI相应的该第一码本索引的取值为0时,该第二PMI相应的该第二码本索引的取值范围只能为(0,2);又例如,当该第一PMI的取值范围为(1,3)时,或该第一PMI相应的该第一码本索引的取值范围为(2,6)时,该第二PMI相应的该第二码本索引的取值范围只能为(1,3),即当确定了该第一PMI相应的该第一码本索引的取值和/或取值范围时,或当确定了该第一PMI的取值和/或取值范围时,同时确定了该第二PMI相应的该第二码本索引的取值范围。For example, when the value of the first PMI is 0, or the value of the first codebook index corresponding to the first PMI is 0, the value range of the second codebook index corresponding to the second PMI It can only be (0, 2); for another example, when the value range of the first PMI is (1, 3), or the value range of the first codebook index corresponding to the first PMI is (2, 6), the value range of the second codebook index corresponding to the second PMI can only be (1, 3), that is, when the value of the first codebook index corresponding to the first PMI and/or or the value range, or when the value and/or value range of the first PMI is determined, the value range of the second codebook index corresponding to the second PMI is determined at the same time.

在本发明实施例中,可选地,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。In this embodiment of the present invention, optionally, the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI, including: The value range of the first codebook index corresponding to the first PMI includes at least two first value sets with mutually different elements, and the value range of the second codebook index corresponding to the second PMI includes elements mutually different. For the at least two second value sets that are different, the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

应理解,第一取值集合的数量与第二取值集合的数量相等。还应理解,第一取值集合中各元素互不相同,第二取值集合中各元素也互不相同。It should be understood that the quantity of the first value set is equal to the quantity of the second value set. It should also be understood that the elements in the first value set are different from each other, and the elements in the second value set are also different from each other.

例如,如表7所示,该第一PMI相应的该第一码本索引的取值范围包括两个第一取值集合(0,4,8,12)和(2,6,10,14);该第二PMI相应的该第二码本索引的取值范围包括两个第二取值集合(0,2)和(1,3);其中,第一取值集合(0,4,8,12)与第二取值集合(0,2)对应,第一取值集合(2,6,10,14)与第二取值集合(1,3)对应。For example, as shown in Table 7, the value range of the first codebook index corresponding to the first PMI includes two first value sets (0, 4, 8, 12) and (2, 6, 10, 14 ); the value range of the second codebook index corresponding to the second PMI includes two second value sets (0, 2) and (1, 3); wherein, the first value set (0, 4, 8, 12) corresponds to the second value set (0, 2), and the first value set (2, 6, 10, 14) corresponds to the second value set (1, 3).

可选地,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。Optionally, each first value set in the at least two first value sets includes at least two values, and each second value set in the at least two second value sets includes at least two value.

在本发明实施例中,由于第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,因而本发明实施例的传输预编码矩阵的方法,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。In the embodiment of the present invention, since the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI, the transmission precoding in the embodiment of the present invention The matrix method can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the performance applied to dual-polarized antennas is not affected, thereby improving the system performance and enhance the user experience.

在S120中,用户设备可以确定用于指示该第一预编码矩阵的第一码本索引i1和第二码本索引i2,并可以基于该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,确定用于指示该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值。In S120, the user equipment may determine a first codebook index i 1 and a second codebook index i 2 used to indicate the first precoding matrix, and based on the value of the first PMI and the first codebook index The value of the second PMI has a first corresponding relationship, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the value of the first precoding matrix indicating the PMI used to indicate the first precoding matrix is determined and The value of the second PMI.

在本发明实施例中,可选地,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In this embodiment of the present invention, optionally, the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI Values are determined from Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

从表A1可以看出,当IPMI1的取值范围为(0,2,4,6)时,即当IPMI1对应的i1的取值范围为(0,4,8,12)时,对应i2的取值是范围是(0,2)。当IPMI1的取值范围为(1,3,5,7)时,即当IPMI1对应的i1的取值范围为(2,6,10,14)时,对应i2的取值是范围是(1,3)。即IPMI2对应的i2的取值或取值范围与IPMI1对应的i1的取值或取值范围相关联。It can be seen from Table A1 that when the value range of I PMI1 is (0, 2, 4, 6), that is, when the value range of i 1 corresponding to I PMI1 is (0, 4, 8, 12), The value corresponding to i 2 is in the range (0, 2). When the value range of IPMI1 is (1, 3, 5, 7), that is, when the value range of i 1 corresponding to IPMI1 is (2, 6, 10, 14), the corresponding value of i 2 is The range is (1, 3). That is, the value or value range of i2 corresponding to IPMI2 is associated with the value or value range of i1 corresponding to IPMI1 .

应理解,本发明实施例仅以表A1所示的IPMI1、IPMI2、i1和i2的取值范围为例进行说明,但本发明实施例并不限于此,例如,IPMI1、IPMI2、i1和i2还可以为其它取值范围,同样能够使得IPMI2对应的i2的取值或取值范围与IPMI1对应的i1的取值或取值范围相关联,并且相应的第一码本集合仍可以包括八个DFT向量。It should be understood that the embodiments of the present invention are only described by taking the value ranges of IPMI1 , IPMI2 , i 1 and i 2 shown in Table A1 as examples, but the embodiments of the present invention are not limited thereto. For example, IPMI1 , I PMI1 , I PMI2 , i 1 and i 2 can also be other value ranges, and the value or value range of i 2 corresponding to IPMI2 can be associated with the value or value range of i 1 corresponding to I PMI1 , and corresponding The first codebook set of can still include eight DFT vectors.

在本发明实施例中,可选地,该第二码本集合包括的预编码矩阵W由表A2确定:In this embodiment of the present invention, optionally, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

在S130中,用户设备例如在PUCCH信道上、物理上行共享信道(PhysicalUplink Shared Channel,简称为“PUSCH”)或其它信道上向基站发送PMI,该PMI包括用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值。In S130, the user equipment sends a PMI to the base station, for example, on a PUCCH channel, a Physical Uplink Shared Channel (Physical Uplink Shared Channel, "PUSCH") or other channels, and the PMI includes the information used to indicate the first precoding matrix. The value of the first PMI and the value of the second PMI.

可选地,用户设备在一个上行信道上向基站发送该PMI。该上行信道可以是PUCCH或PUSCH等信道。例如,用户设备在一个PUCCH上传输该PMI,或用户设备在一个PUSCH上传输该PMI。应理解,用户设备也可以分别向基站发送用于指示该第一预编码矩阵的第一PMI的值和第二PMI的值,本发明实施例并不限于此。Optionally, the user equipment sends the PMI to the base station on an uplink channel. The uplink channel may be a channel such as PUCCH or PUSCH. For example, the user equipment transmits the PMI on a PUCCH, or the user equipment transmits the PMI on a PUSCH. It should be understood that the user equipment may also separately send the first PMI value and the second PMI value used to indicate the first precoding matrix to the base station, and this embodiment of the present invention is not limited thereto.

因此,本发明实施例的传输预编码矩阵的方法,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the method for transmitting a precoding matrix in the embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, and can be used in Without changing the feedback mode and feedback bits, indicate more precoding matrices suitable for uniform linear array antennas, and ensure that the performance applied to dual-polarized antennas will not be affected, thereby improving system performance and enhancing user experience .

在本发明实施例中,可选地,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。例如,如表7所示,承载该第二PMI的值的比特数为1,该第二PMI相应的该第二码本索引的取值范围为(0,2)和(1,4),该第二码本索引的取值数量为4,大于2(即21)。由此,UE可以用更少的资源来指示更多的DFT向量。In this embodiment of the present invention, optionally, the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the number of bits carrying the value of the second PMI . For example, as shown in Table 7, the number of bits carrying the value of the second PMI is 1, and the value range of the second codebook index corresponding to the second PMI is (0, 2) and (1, 4), The number of values of the second codebook index is 4, which is greater than 2 (that is, 2 1 ). Thus, the UE can indicate more DFT vectors with less resources.

在本发明实施例中,可选地,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。In this embodiment of the present invention, optionally, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is equal to the number of DFT vectors included in the first codebook set half of the number of precoding matrices.

例如,如表7所示,根据本发明实施例的应用于4天线的第一码本集合包括8个DFT向量,与3GPP LTE R8系统中的DFT向量相同,因而不会影响应用于ULA天线时的系统性能,并且该第一码本集合包括的每个预编码矩阵都适用于双极化天线。For example, as shown in Table 7, the first codebook set applied to 4 antennas according to the embodiment of the present invention includes 8 DFT vectors, which are the same as the DFT vectors in the 3GPP LTE R8 system, so it will not affect the codebook set applied to ULA antennas. system performance, and each precoding matrix included in the first codebook set is applicable to dual-polarized antennas.

在本发明实施例中,可选地,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In this embodiment of the present invention, optionally, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and A rank-1 precoding matrix.

另外,结合表A1和表A2可知,当i1=0且i2=0时、当i1=2且i2=1时、当i1=4且i2=2时、当i1=6且i2=3时、当i1=8且i2=0时、当i1=10且i2=1时、当i1=12且i2=2时或当i1=1且i2=3时,对应的预编码矩阵都为DFT向量,即在本发明实施例中下采样后的16个预编码矩阵中有8个DFT向量。In addition, combining Table A1 and Table A2, it can be seen that when i 1 =0 and i 2 =0, when i 1 =2 and i 2 =1, when i 1 =4 and i 2 =2, when i 1 = 6 and i 2 =3, when i 1 =8 and i 2 =0, when i 1 =10 and i 2 =1, when i 1 =12 and i 2 =2 or when i 1 =1 and When i 2 =3, the corresponding precoding matrices are all DFT vectors, that is, there are 8 DFT vectors in the 16 downsampled precoding matrices in the embodiment of the present invention.

在本发明实施例中,根据表3可以确定秩为2的4天线码本,并且可以重用表6所示的下采样码本。根据秩为2的4天线码本结构和表6所示的子采样,16个秩为2的预编码矩阵包括32个向量,并且同样包括8个DFT向量。由此本发明实施例能够在进行码本下采样且不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并且下采样后的码本集合中的每个预编码矩阵都能够适用于双极化天线,因而能够保证不影响应用于双极化天线的性能,并能够提高系统性能,以及增强用户体验。In the embodiment of the present invention, a 4-antenna codebook with a rank of 2 can be determined according to Table 3, and the downsampling codebook shown in Table 6 can be reused. According to the 4-antenna codebook structure with rank 2 and the sub-sampling shown in Table 6, 16 precoding matrices with rank 2 include 32 vectors, and also include 8 DFT vectors. Therefore, the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits under the codebook downsampling, and the downsampled codebook set Each precoding matrix can be applied to dual-polarized antennas, thus ensuring that performance applied to dual-polarized antennas will not be affected, system performance can be improved, and user experience can be enhanced.

应理解,在本发明实施例中,第一码本集合以包括表7所示的预编码矩阵为例进行说明,第二码本集合以包括表A2所示的预编码矩阵为例进行说明,但本发明实施例并不限于此,第一码本集合和第二码本集合还可以具有其它码本结构。It should be understood that, in the embodiment of the present invention, the first codebook set includes the precoding matrix shown in Table 7 as an example for description, and the second codebook set includes the precoding matrix shown in Table A2 as an example for description, However, the embodiment of the present invention is not limited thereto, and the first codebook set and the second codebook set may also have other codebook structures.

应理解,基站(eNB)可以首先对UE配置信道状态信息参考信号(ChannelState Information Reference Signal,简称为“CSI-RS”),具体地,对于基站的Nt根天线或Nt个天线端口,基站给UE配置Nt个CSI-RS的天线端口的资源,其中Nt为自然数,例如Nt等于4。UE由此可以在相应的CSI-RS资源上测量信道质量,并可以确定UE期望eNB发送下行数据时使用的RI、PMI、CQI等。UE确定RI、PMI、CQI等信道状态信息(Channel StateInformation,简称为“CSI”)后,可以在eNB配置给该UE的反馈资源上,将该CSI反馈给基站。例如,基站给UE配置的反馈模式为PUCCH模式1-1的子模式2,则UE在反馈RI的子帧上反馈RI,在反馈第一PMI IPMI1、第二PMI IPMI2和CQI的子帧上分别反馈IPMI1、IPMI2和CQI。为了简洁,在此不再赘述。It should be understood that the base station (eNB) may first configure a channel state information reference signal (ChannelState Information Reference Signal, referred to as "CSI-RS") for the UE, specifically, for N t antennas or N t antenna ports of the base station, the base station The UE is configured with N t CSI-RS antenna port resources, where N t is a natural number, for example, N t is equal to 4. Therefore, the UE can measure the channel quality on the corresponding CSI-RS resource, and can determine the RI, PMI, CQI, etc. used when the UE expects the eNB to send downlink data. After the UE determines RI, PMI, CQI and other channel state information (Channel State Information, referred to as "CSI"), it can feed back the CSI to the base station on the feedback resources configured by the eNB for the UE. For example, the feedback mode configured by the base station for the UE is sub-mode 2 of PUCCH mode 1-1, then the UE feeds back RI on the subframe in which RI is fed back, and in the subframe in which the first PMI I PMI1 , the second PMI I PMI2 and CQI are fed back Feedback IPMI1 , IPMI2 and CQI respectively. For the sake of brevity, details are not repeated here.

还应理解,在本发明实施例中,预编码矩阵集合可以称为码本,预编码矩阵集合中的每个预编码矩阵可以称为码字,但本发明并不限于此。It should also be understood that in the embodiment of the present invention, the set of precoding matrices may be called a codebook, and each precoding matrix in the set of precoding matrices may be called a codeword, but the present invention is not limited thereto.

还应理解,在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。It should also be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution, and the order of execution of each process should be determined by its functions and internal logic, and should not be used in the implementation of the present invention. The implementation of the examples constitutes no limitation.

因此,本发明实施例的传输预编码矩阵的方法,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the method for transmitting a precoding matrix in the embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, and can be used in Without changing the feedback mode and feedback bits, indicate more precoding matrices suitable for uniform linear array antennas, and ensure that the performance applied to dual-polarized antennas will not be affected, thereby improving system performance and enhancing user experience .

图2示出了根据本发明实施例的传输预编码矩阵的方法200的示意性流程图,该方法200例如可以由用户设备执行。该方法200包括:Fig. 2 shows a schematic flowchart of a method 200 for transmitting a precoding matrix according to an embodiment of the present invention, and the method 200 may be executed, for example, by a user equipment. The method 200 includes:

S210,在第一码本集合中确定第一预编码矩阵,该第一码本集合为应用于四天线的第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;S210. Determine a first precoding matrix in a first codebook set, where the first codebook set is a subset of a second codebook set applied to four antennas, and the precoding matrix included in the second codebook set is determined by the first codebook set A codebook index and a second codebook index indication;

S220,确定用于指示该第一预编码矩阵的联合编码值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;S220. Determine a joint coding value used to indicate the first precoding matrix, where the joint coding value has a first corresponding relationship with the rank of the first precoding matrix, and the joint coding value and the rank of the first precoding matrix The value of the first codebook index has a second corresponding relationship, and the number of bits carrying the joint encoding value is 4 or 5;

S230,向基站发送包括该联合编码值的预编码矩阵指示PMI,以便于该基站根据该PMI确定该第一预编码矩阵。S230. Send a precoding matrix indication PMI including the joint coding value to the base station, so that the base station determines the first precoding matrix according to the PMI.

因此,本发明实施例的传输预编码矩阵的方法,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the method for transmitting a precoding matrix in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that it does not affect the Polarized antenna performance, which can improve system performance and enhance user experience.

具体而言,在3GPP LTE R10系统中,对于8天线码本而言,PUCCH反馈模式1-1的子模式1采用如表8所示的秩RI和第一码本索引i1联合编码的方式。Specifically, in the 3GPP LTE R10 system, for an 8-antenna codebook, the submode 1 of the PUCCH feedback mode 1-1 adopts the joint coding method of the rank RI and the first codebook index i 1 as shown in Table 8 .

表8Table 8

在本发明实施例中,当4天线增强码本支持PUCCH反馈模式1-1的子模式1时,即当4天线增强码本支持秩RI和第一码本索引i1联合编码时,可以分为4天线增强码本只支持秩RI为1和2的联合编码情况,以及4天线增强码本支持秩RI为1至4的联合编码情况。下面将分别进行描述。In the embodiment of the present invention, when the 4-antenna enhanced codebook supports submode 1 of PUCCH feedback mode 1-1, that is, when the 4-antenna enhanced codebook supports joint coding of the rank RI and the first codebook index i+ 1 , it can be divided into The 4-antenna enhanced codebook only supports joint coding cases where rank RI is 1 and 2, and the 4-antenna enhanced codebook supports joint coding cases where rank RI is 1 to 4. Each will be described below.

当根据本发明实施例的4天线增强码本只支持秩RI为1和2的联合编码时,在本发明实施例中,可选地,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1所示:When the 4-antenna enhanced codebook according to the embodiment of the present invention only supports joint coding with ranks RI of 1 and 2, in this embodiment of the present invention, optionally, the joint coding value and the rank sum of the first precoding matrix The corresponding relationship of the values of the first codebook index is shown in the following table B1:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

如表B1所示,该表B1确定的4天线增强码本采用了下采样,并且承载该联合编码值IRI/PMI1的比特数为4个,即RI和i1的联合编码一共用4个比特表示。As shown in Table B1, the 4-antenna enhanced codebook determined in Table B1 adopts downsampling, and the number of bits carrying the joint coding value I RI/PMI1 is 4, that is, the joint coding of RI and i 1 shares 4 bits Bit said.

根据本发明实施例的4天线增强码本也可以不采用下采样,此时码本更精细,例如如表B4所示,该4天线增强码本也只支持秩RI为1和2的联合编码,但在该码本中,RI和i1的联合编码一共需要用5个比特表示。The 4-antenna enhanced codebook according to the embodiment of the present invention may not use downsampling, and the codebook is more refined at this time. For example, as shown in Table B4, the 4-antenna enhanced codebook only supports joint coding with rank RI being 1 and 2 , but in this codebook, the joint coding of RI and i 1 needs to be represented by 5 bits in total.

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

当根据本发明实施例的4天线增强码本支持秩RI为1至4的联合编码时,根据8天线的码本结构,可以确定秩为3或4(即传输层数为3层或4层)的4天线增强码本,分别如表9和表10所示,其中,第一码本索引i1的值固定为0,不需要额外比特表示。When the 4-antenna enhanced codebook according to the embodiment of the present invention supports joint coding with ranks RI of 1 to 4, according to the codebook structure of 8 antennas, it can be determined that the rank is 3 or 4 (that is, the number of transmission layers is 3 or 4). ) 4-antenna enhanced codebooks, as shown in Table 9 and Table 10, respectively, where the value of the first codebook index i 1 is fixed to 0, and no additional bits are required for representation.

表9Table 9

表10Table 10

其中,vm=[1 ej2πm/32]Tm和n为非负整数。where v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

在本发明实施例中,可选地,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表表B5确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint coding value is 5, the correspondence between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is given by Table B5 below identifies:

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

在表B5中,秩RI为1和2的码本进行了下采样,并且RI和i1的联合编码一共需要用5个比特表示。In Table B5, codebooks with rank RI of 1 and 2 are down-sampled, and the joint coding of RI and i 1 needs to be represented by 5 bits in total.

为了进一步提高RI和i1的联合编码的反馈性能,可以将反馈的比特数限制为4个比特,此时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B2或表B3确定:In order to further improve the feedback performance of the joint encoding of RI and i 1 , the number of bits fed back can be limited to 4 bits. At this time, the joint encoding value and the rank of the first precoding matrix and the index of the first codebook The correspondence of values is determined by the following table B2 or table B3:

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

在表B2中,当秩RI为1时,对应的i1有8种状态;当秩RI为2时,对应的i1有6种状态;当秩RI为3和4时,对应的i1分别有1种状态,并且RI和i1的联合编码一共只用4个比特表示。在表B3中,当秩RI为1和2时,对应的i1分别有7种状态;当秩RI为3和4时,对应的i1分别1种状态,并且RI和i1的联合编码一共只用4个比特表示。In Table B2, when the rank RI is 1, the corresponding i 1 has 8 states; when the rank RI is 2, the corresponding i 1 has 6 states; when the rank RI is 3 and 4, the corresponding i 1 There are 1 state respectively, and the joint coding of RI and i 1 is represented by only 4 bits in total. In Table B3, when the rank RI is 1 and 2, the corresponding i 1 has 7 states respectively; when the rank RI is 3 and 4, the corresponding i 1 has 1 state respectively, and the joint encoding of RI and i 1 A total of only 4 bits are used to represent.

因此,本发明实施例的传输预编码矩阵的方法,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the method for transmitting a precoding matrix in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that it does not affect the Polarized antenna performance, which can improve system performance and enhance user experience.

上文中结合图1和图2,从用户设备的角度详细描述了根据本发明实施例的传输预编码矩阵的方法,下面将结合图3和图4,从基站的角度描述根据本发明实施例的传输预编码矩阵的方法。The method for transmitting a precoding matrix according to an embodiment of the present invention is described in detail from the perspective of a user equipment in conjunction with FIG. 1 and FIG. 2 above. The method for transmitting a precoding matrix according to an embodiment of the present invention will be described below in conjunction with FIG. 3 and FIG. 4 from a perspective of a base station. Method for transmitting precoding matrix.

如图3所示,根据本发明实施例的传输预编码矩阵的方法300可以由基站执行,该方法300包括:As shown in FIG. 3, a method 300 for transmitting a precoding matrix according to an embodiment of the present invention may be performed by a base station, and the method 300 includes:

S310,接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;S310. Receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a value of the first PMI and a value of the second PMI used to indicate the first precoding matrix in the first codebook set;

S320,根据该第一PMI的值和该第二PMI的值,确定第一码本索引的值和第二码本索引的值,该第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,该第一码本集合为该第二码本集合的子集;S320. Determine a value of a first codebook index and a value of a second codebook index according to the value of the first PMI and the value of the second PMI, where the first codebook index and the second codebook index are used to indicate the first codebook index A precoding matrix in a set of two codebooks, the first set of codebooks being a subset of the second set of codebooks;

S330,根据该第一码本索引的值和该第二码本索引的值,在该第二码本集合中确定该第一预编码矩阵;S330. Determine the first precoding matrix in the second codebook set according to the value of the first codebook index and the value of the second codebook index;

其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI的值相应的该第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the first PMI corresponds to The value range of the first codebook index is associated with the value range of the second codebook index corresponding to the value of the second PMI.

因此,本发明实施例的传输预编码矩阵的方法,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the method for transmitting a precoding matrix in the embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, and can be used in Without changing the feedback mode and feedback bits, indicate more precoding matrices suitable for uniform linear array antennas, and ensure that the performance applied to dual-polarized antennas will not be affected, thereby improving system performance and enhancing user experience .

应理解,在本发明实施例中,基站可以通过UE发送的CSI信息,接收UE发送的PMI,该CSI信息还可以包括RI和CQI等。基站根据RI和PMI可以得到UE反馈的预编码矩阵,并且可以根据CQI得到使用此预编码矩阵时的信道质量。当基站对UE进行单用户MIMO传输时,基站可以使用该预编码矩阵对UE的下行数据进行预编码,同时根据CQI可以确定发送该下行数据的调制编码方式。当基站对UE进行多用户MIMO传输时,比如两个用户的多用户MIMO,基站可以根据该UE反馈的预编码矩阵和配对UE反馈的预编码矩阵,通过迫零(Zero Forcing,简称为“ZF”)的方法,可以得到消除多用户干扰的预编码矩阵。因而,基站可以使用该预编码矩阵对多用户MIMO的下行数据进行预编码。并且,基站可以根据两个用户反馈的CQI,确定这两个用户进行多用户MIMO传输时的调制编码方式。为了简洁,在此不再赘述。It should be understood that, in the embodiment of the present invention, the base station may receive the PMI sent by the UE through the CSI information sent by the UE, and the CSI information may also include RI and CQI. The base station can obtain the precoding matrix fed back by the UE according to the RI and PMI, and can obtain the channel quality when using the precoding matrix according to the CQI. When the base station performs single-user MIMO transmission on the UE, the base station can use the precoding matrix to precode the downlink data of the UE, and at the same time determine the modulation and coding scheme for sending the downlink data according to the CQI. When the base station performs multi-user MIMO transmission on the UE, such as two-user multi-user MIMO, the base station can use the zero forcing (Zero Forcing, referred to as "ZF ”) method, the precoding matrix for eliminating multi-user interference can be obtained. Therefore, the base station can use the precoding matrix to precode multi-user MIMO downlink data. In addition, the base station can determine the modulation and coding schemes of the two users when performing multi-user MIMO transmission according to the CQI fed back by the two users. For the sake of brevity, details are not repeated here.

在本发明实施例中,可选地,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。In this embodiment of the present invention, optionally, the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI, including: The value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

可选地,该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系,包括:该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。Optionally, the value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI, including: the value range corresponding to the first PMI The value range of the first codebook index includes at least two first value sets with different elements, and the value range of the second codebook index corresponding to the second PMI includes at least two first value sets with different elements. Two value sets, the at least two first value sets and the at least two second value sets have a one-to-one correspondence.

在本发明实施例中,可选地,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。In this embodiment of the present invention, optionally, each of the at least two first value sets includes at least two values, and each of the at least two second value sets The binary set includes at least two values.

在本发明实施例中,可选地,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。In this embodiment of the present invention, optionally, the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the number of bits carrying the value of the second PMI .

可选地,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。Optionally, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is half of the number of precoding matrices included in the first codebook set .

在本发明实施例中,可选地,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In this embodiment of the present invention, optionally, the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI Values are determined from Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33

44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

在本发明实施例中,可选地,该第二码本集合包括的预编码矩阵W由表A2确定:In this embodiment of the present invention, optionally, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

在本发明实施例中,可选地,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。In this embodiment of the present invention, optionally, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and A rank-1 precoding matrix.

可选地,在本发明实施例中,该接收用户设备发送的预编码矩阵指示PMI,包括:在一个上行信道上接收该用户设备发送的该PMI。Optionally, in this embodiment of the present invention, receiving the precoding matrix indication PMI sent by the user equipment includes: receiving the PMI sent by the user equipment on an uplink channel.

应理解,基站侧描述的基站与用户设备的交互及相关特性、功能等与用户设备侧的参考图1的描述相应,为了简洁,在此不再赘述。It should be understood that the interaction between the base station and the user equipment and related features and functions described on the base station side correspond to the description on the user equipment side with reference to FIG. 1 , and are not repeated here for brevity.

因此,本发明实施例的传输预编码矩阵的方法,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the method for transmitting a precoding matrix in the embodiment of the present invention, the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, and can be used in Without changing the feedback mode and feedback bits, indicate more precoding matrices suitable for uniform linear array antennas, and ensure that the performance applied to dual-polarized antennas will not be affected, thereby improving system performance and enhancing user experience .

图4示出了根据本发明实施例的传输预编码矩阵的方法300的示意性流程图,该方法300可以由用户设备执行。如图4所示,该方法300包括:Fig. 4 shows a schematic flowchart of a method 300 for transmitting a precoding matrix according to an embodiment of the present invention, and the method 300 can be executed by a user equipment. As shown in Figure 4, the method 300 includes:

S410,接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;S410. Receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a joint coding value used to indicate the first precoding matrix in the first codebook set;

S420,根据该联合编码值,确定该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;S420. Determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix according to the joint encoding value, where the joint encoding value and the rank of the first precoding matrix have the A correspondence relationship, the joint encoding value has a second correspondence relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5;

S430,根据该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定该第一预编码矩阵,该第一码本集合为该第二码本集合的子集。S430, according to the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, determine the first precoding matrix in the second codebook set applied to four antennas, the first The set of codebooks is a subset of the second set of codebooks.

因此,本发明实施例的传输预编码矩阵的方法,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the method for transmitting a precoding matrix in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that it does not affect the Polarized antenna performance, which can improve system performance and enhance user experience.

在本发明实施例中,可选地,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint encoding value is 4, the correspondence between the joint encoding value and the rank of the first precoding matrix and the value of the first codebook index Determined from Table B1, Table B2 or Table B3 below:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

在本发明实施例中,可选地,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint coding value is 5, the correspondence between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is given by Table B4 or Table B5 below identifies:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

应理解,基站侧描述的基站与用户设备的交互及相关特性、功能等与用户设备侧的参考图2的描述相应,为了简洁,在此不再赘述。It should be understood that the interaction between the base station and the user equipment and related features and functions described on the base station side correspond to the description on the user equipment side with reference to FIG. 2 , and are not repeated here for brevity.

因此,本发明实施例的传输预编码矩阵的方法,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the method for transmitting a precoding matrix in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that it does not affect the Polarized antenna performance, which can improve system performance and enhance user experience.

上文中结合图1至图4,详细描述了根据本发明实施例的传输预编码矩阵的方法,下面将结合图5至图12,详细描述根据本发明实施例的用户设备和基站。The method for transmitting a precoding matrix according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 4 . The user equipment and base station according to an embodiment of the present invention will be described in detail below in conjunction with FIG. 5 to FIG. 12 .

图5示出了根据本发明实施例的用户设备600的示意性框图,如图5所示,该用户设备600包括:FIG. 5 shows a schematic block diagram of a user equipment 600 according to an embodiment of the present invention. As shown in FIG. 5, the user equipment 600 includes:

第一确定模块610,用于在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;The first determining module 610 is configured to determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set, and the precoding matrix included in the second codebook set is composed of a first codebook index and a second codebook index indication;

第二确定模块620,用于确定用于指示该第一确定模块610确定的该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;The second determination module 620 is configured to determine a value of a first precoding matrix indication PMI and a value of a second PMI used to indicate the first precoding matrix determined by the first determining module 610;

发送模块630,用于向基站发送PMI,该PMI包括该第二确定模块620确定的用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵;A sending module 630, configured to send a PMI to the base station, where the PMI includes the value of the first PMI and the value of the second PMI determined by the second determining module 620 to indicate the first precoding matrix, so that the base station determining the precoding matrix according to the PMI;

其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the first PMI corresponds to The value range of the first codebook index is associated with the value range of the second codebook index corresponding to the second PMI.

因此,本发明实施例的用户设备,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the user equipment according to the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode. In the case of and feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and the performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

在本发明实施例中,可选地,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。In this embodiment of the present invention, optionally, the value range of the second codebook index corresponding to the second PMI is unique from the value and/or value range of the first codebook index corresponding to the first PMI Sure.

可选地,作为一个实施例,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。Optionally, as an embodiment, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the second PMI corresponding to the second codebook index The value range of the index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

在本发明实施例中,可选地,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。In this embodiment of the present invention, optionally, each of the at least two first value sets includes at least two values, and each of the at least two second value sets The binary set includes at least two values.

可选地,作为一个实施例,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。Optionally, as an embodiment, the value range of the second codebook index corresponding to the second PMI includes values greater than 2 N , where N is the number of bits carrying the value of the second PMI.

可选地,作为一个实施例,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。Optionally, as an embodiment, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is the number of precoded vectors included in the first codebook set Half the number of matrices.

在本发明实施例中,可选地,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In this embodiment of the present invention, optionally, the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI Values are determined from Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

在本发明实施例中,可选地,该第二码本集合包括的预编码矩阵W由表A2确定:In this embodiment of the present invention, optionally, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

可选地,作为一个实施例,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。Optionally, as an embodiment, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and has a rank of 1 precoding matrix.

可选地,作为一个实施例,该发送模块630具体用于:在一个上行信道上向该基站发送该PMI。Optionally, as an embodiment, the sending module 630 is specifically configured to: send the PMI to the base station on an uplink channel.

应理解,根据本发明实施例的用户设备600可对应于执行根据本发明实施例的传输预编码矩阵的方法的用户设备,并且用户设备600中的各个模块的上述和其它操作和/或功能为了实现图1中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the user equipment 600 according to the embodiment of the present invention may correspond to the user equipment performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the above-mentioned and other operations and/or functions of each module in the user equipment 600 are for For the sake of brevity, the corresponding process for implementing the method in FIG. 1 will not be repeated here.

因此,本发明实施例的用户设备,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the user equipment according to the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode. In the case of and feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and the performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

图6示出了根据本发明实施例的用户设备700的示意性框图。如图7所示,该用户设备700包括:Fig. 6 shows a schematic block diagram of a user equipment 700 according to an embodiment of the present invention. As shown in FIG. 7, the user equipment 700 includes:

第一确定模块710,用于在第一码本集合中确定第一预编码矩阵,该第一码本集合为应用于四天线的第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;The first determining module 710 is configured to determine a first precoding matrix in a first codebook set, the first codebook set is a subset of a second codebook set applied to four antennas, and the second codebook set includes The precoding matrix of is indicated by a first codebook index and a second codebook index;

第二确定模块720,用于确定用于指示该第一确定模块710确定的该第一预编码矩阵的联合编码值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;The second determining module 720 is configured to determine a joint encoding value indicating the first precoding matrix determined by the first determining module 710, where the joint encoding value has a first correspondence with the rank of the first precoding matrix relationship, the joint encoding value has a second corresponding relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5;

发送模块730,用于向基站发送预编码矩阵指示PMI,该PMI包括该第二确定模块720确定的该联合编码值,以便于该基站根据该PMI确定该第一预编码矩阵。The sending module 730 is configured to send a precoding matrix indication PMI to the base station, where the PMI includes the joint coding value determined by the second determining module 720, so that the base station determines the first precoding matrix according to the PMI.

因此,本发明实施例的用户设备,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the user equipment in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the precoding matrices applied to dual-polarized antennas will not be affected. performance, which can improve system performance and enhance user experience.

在本发明实施例中,可选地,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint encoding value is 4, the correspondence between the joint encoding value and the rank of the first precoding matrix and the value of the first codebook index Determined from Table B1, Table B2 or Table B3 below:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

在本发明实施例中,可选地,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint coding value is 5, the correspondence between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is given by Table B4 or Table B5 below identifies:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

应理解,根据本发明实施例的用户设备700可对应于执行根据本发明实施例的传输预编码矩阵的方法的用户设备,并且用户设备700中的各个模块的上述和其它操作和/或功能为了实现图2中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the user equipment 700 according to the embodiment of the present invention may correspond to the user equipment performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the above-mentioned and other operations and/or functions of each module in the user equipment 700 are for The corresponding process for implementing the method in FIG. 2 is not repeated here for the sake of brevity.

因此,本发明实施例的用户设备,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the user equipment in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the precoding matrices applied to dual-polarized antennas will not be affected. performance, which can improve system performance and enhance user experience.

图7示出了根据本发明实施例的基站800的示意性框图。如图7所示,该基站800包括:Fig. 7 shows a schematic block diagram of a base station 800 according to an embodiment of the present invention. As shown in FIG. 7, the base station 800 includes:

接收模块810,用于接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;The receiving module 810 is configured to receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a value of the first PMI and a value of the second PMI used to indicate the first precoding matrix in the first codebook set;

第一确定模块820,用于根据该接收模块810接收的该第一PMI的值和该第二PMI的值,确定第一码本索引的值和第二码本索引的值,该第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,该第一码本集合为该第二码本集合的子集;The first determining module 820 is configured to determine the value of the first codebook index and the value of the second codebook index according to the value of the first PMI and the value of the second PMI received by the receiving module 810, the first code The index and the second codebook index are used to indicate the precoding matrix in the second codebook set, the first codebook set is a subset of the second codebook set;

第二确定模块830,用于根据该第一确定模块820确定的该第一码本索引的值和该第二码本索引的值,在该第二码本集合中确定该第一预编码矩阵;The second determining module 830 is configured to determine the first precoding matrix in the second codebook set according to the value of the first codebook index and the value of the second codebook index determined by the first determining module 820 ;

其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI的值相应的该第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the first PMI corresponds to The value range of the first codebook index is associated with the value range of the second codebook index corresponding to the value of the second PMI.

因此,本发明实施例的基站,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the base station of the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an associated relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode and In the case of feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

在本发明实施例中,可选地,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。In this embodiment of the present invention, optionally, the value range of the second codebook index corresponding to the second PMI is unique from the value and/or value range of the first codebook index corresponding to the first PMI Sure.

在本发明实施例中,可选地,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。In this embodiment of the present invention, optionally, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets whose elements are different from each other, and the value range of the second PMI corresponding to the first codebook index The value range of the binary codebook index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

可选地,作为一个例子,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。Optionally, as an example, each first value set in the at least two first value sets includes at least two values, and each second value in the at least two second value sets Sets contain at least two values.

可选地,作为一个例子,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。Optionally, as an example, the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the number of bits carrying the value of the second PMI.

可选地,作为一个例子,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。Optionally, as an example, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is the precoding matrix included in the first codebook set half of the amount.

在本发明实施例中,可选地,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定:In this embodiment of the present invention, optionally, the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI Values are determined from Table A1:

表A1Table A1

IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33

其中,IPMI1表示该第一PMI;IPMI2表示该第二PMI;i1表示该第一码本索引;i2表示该第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .

在本发明实施例中,可选地,该第二码本集合包括的预编码矩阵W由表A2确定:In this embodiment of the present invention, optionally, the precoding matrix W included in the second codebook set is determined by Table A2:

表A2Table A2

其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers.

可选地,作为一个例子,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。Optionally, as an example, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and has a rank of 1 The precoding matrix of .

可选地,在本发明实施例中,该接收模块具体用于:在一个上行信道上接收该用户设备发送的该PMI。Optionally, in this embodiment of the present invention, the receiving module is specifically configured to: receive the PMI sent by the user equipment on an uplink channel.

应理解,根据本发明实施例的基站800可对应于执行根据本发明实施例的传输预编码矩阵的方法的基站,并且基站800中的各个模块的上述和其它操作和/或功能为了实现图3中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the base station 800 according to the embodiment of the present invention may correspond to a base station that executes the method for transmitting a precoding matrix according to the embodiment of the present invention, and the above-mentioned and other operations and/or functions of each module in the base station 800 are in order to realize the For the sake of brevity, the corresponding process of the method in is not repeated here.

因此,本发明实施例的基站,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the base station of the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an associated relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode and In the case of feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

图8示出了根据本发明实施例的基站900的示意性框图。如图8所示,该基站900包括:Fig. 8 shows a schematic block diagram of a base station 900 according to an embodiment of the present invention. As shown in FIG. 8, the base station 900 includes:

接收模块910,用于接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;The receiving module 910 is configured to receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a joint coding value used to indicate the first precoding matrix in the first codebook set;

第一确定模块920,用于根据该接收模块910接收的该联合编码值,确定该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;The first determining module 920 is configured to determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix according to the joint encoding value received by the receiving module 910, wherein the joint encoding The value has a first correspondence relationship with the rank of the first precoding matrix, the joint encoding value has a second correspondence relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value 4 or 5;

第二确定模块930,用于根据该第一确定模块920确定的该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定该第一预编码矩阵,该第一码本集合为该第二码本集合的子集。The second determining module 930 is configured to, according to the rank of the first precoding matrix determined by the first determining module 920 and the value of the first codebook index of the first precoding matrix, apply the second code of the four antennas The first precoding matrix is determined in this set, and the first codebook set is a subset of the second codebook set.

因此,本发明实施例的基站,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the base station in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the performance applied to dual-polarized antennas is not affected , so as to improve system performance and enhance user experience.

在本发明实施例中,可选地,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint encoding value is 4, the correspondence between the joint encoding value and the rank of the first precoding matrix and the value of the first codebook index Determined from Table B1, Table B2 or Table B3 below:

表B1Table B1

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )

表B2Table B2

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

表B3Table B3

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

在本发明实施例中,可选地,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:In this embodiment of the present invention, optionally, when the number of bits carrying the joint coding value is 5, the corresponding relationship between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is given by Table B4 or Table B5 below identifies:

表B4Table B4

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16

表B5Form B5

IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1

8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00 18-3118-31 保留reserve null

其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.

应理解,根据本发明实施例的基站900可对应于执行根据本发明实施例的传输预编码矩阵的方法的基站,并且基站900中的各个模块的上述和其它操作和/或功能为了实现图4中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the base station 900 according to the embodiment of the present invention may correspond to a base station that performs the method for transmitting a precoding matrix according to the embodiment of the present invention, and the above-mentioned and other operations and/or functions of each module in the base station 900 are in order to realize the For the sake of brevity, the corresponding process of the method in is not repeated here.

因此,本发明实施例的基站,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the base station in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the performance applied to dual-polarized antennas is not affected , so as to improve system performance and enhance user experience.

另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

应理解,在本发明实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。It should be understood that in the embodiment of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

如图9所示,本发明实施例还提供了一种用户设备10,该用户设备10包括处理器11、存储器12、总线系统13和发送器14。其中,处理器11、存储器12和发送器14通过总线系统13相连,该存储器12用于存储指令,该处理器11用于执行该存储器12存储的指令,以控制发送器14发送信号。其中,该处理器11用于:在第一码本集合中确定第一预编码矩阵,该第一码本集合为第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;该处理器11还用于:确定用于指示该第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;该发送器14用于:向基站发送PMI,该PMI包括用于指示该第一预编码矩阵的该第一PMI的值和该第二PMI的值,以便于该基站根据该PMI确定该预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI相应的该第二码本索引的取值范围具有关联关系。As shown in FIG. 9 , the embodiment of the present invention also provides a user equipment 10 , where the user equipment 10 includes a processor 11 , a memory 12 , a bus system 13 and a transmitter 14 . Wherein, the processor 11 , the memory 12 and the transmitter 14 are connected through the bus system 13 , the memory 12 is used to store instructions, and the processor 11 is used to execute the instructions stored in the memory 12 to control the transmitter 14 to send signals. Wherein, the processor 11 is configured to: determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set, and the precoding matrix included in the second codebook set Indicated by the first codebook index and the second codebook index; the processor 11 is also used to: determine the value of the first precoding matrix indicating PMI and the value of the second PMI used to indicate the first precoding matrix; the The transmitter 14 is configured to: send a PMI to the base station, where the PMI includes the value of the first PMI and the value of the second PMI used to indicate the first precoding matrix, so that the base station determines the precoding matrix according to the PMI ; Wherein, the value of the first PMI has a first correspondence with the value of the first codebook index, the value of the second PMI has a second correspondence with the value of the second codebook index, and the first PMI The value range of the corresponding first codebook index is associated with the value range of the second codebook index corresponding to the second PMI.

因此,本发明实施例的用户设备,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the user equipment according to the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode. In the case of and feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and the performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

应理解,在本发明各个实施例中,该处理器可以是中央处理单元(CentralProcessing Unit,简称为“CPU”),该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。It should be understood that, in various embodiments of the present invention, the processor may be a central processing unit (Central Processing Unit, referred to as "CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSP), dedicated Integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

该存储器可以包括只读存储器和随机存取存储器,并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如,存储器还可以存储设备类型的信息。The memory, which can include read only memory and random access memory, provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information.

该总线系统除包括数据总线之外,还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见,在图中将各种总线都标为总线系统。In addition to the data bus, the bus system may also include a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figures.

在实现过程中,上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。为避免重复,这里不再详细描述。In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

可选地,作为一个实施例,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。Optionally, as an embodiment, the value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

可选地,作为一个实施例,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。Optionally, as an embodiment, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the second PMI corresponding to the second codebook index The value range of the index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

可选地,作为一个实施例,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。Optionally, as an embodiment, each first value set in the at least two first value sets includes at least two values, and each second value in the at least two second value sets A value set includes at least two values.

可选地,作为一个实施例,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。Optionally, as an embodiment, the value range of the second codebook index corresponding to the second PMI includes values greater than 2 N , where N is the number of bits carrying the value of the second PMI.

可选地,作为一个实施例,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。Optionally, as an embodiment, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is the number of precoded vectors included in the first codebook set Half the number of matrices.

可选地,作为一个实施例,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定。Optionally, as an embodiment, values of the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1 OK.

可选地,作为一个实施例,该第二码本集合包括的预编码矩阵W由表A2确定。Optionally, as an embodiment, the precoding matrix W included in the second codebook set is determined by Table A2.

可选地,作为一个实施例,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。Optionally, as an embodiment, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and has a rank of 1 precoding matrix.

可选地,作为一个实施例,发送器14具体用于在一个上行信道上向该基站发送该PMI。Optionally, as an embodiment, the transmitter 14 is specifically configured to send the PMI to the base station on an uplink channel.

应理解,根据本发明实施例的用户设备10可对应于执行根据本发明实施例的传输预编码矩阵的方法的用户设备,以及用户设备600,并且用户设备10中的各个模块的上述和其它操作和/或功能为了实现图1中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the user equipment 10 according to the embodiment of the present invention may correspond to the user equipment performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the user equipment 600, and the above-mentioned and other operations of the various modules in the user equipment 10 And/or function is to realize the corresponding flow of the method in FIG. 1 , for the sake of brevity, no more details are given here.

因此,本发明实施例的用户设备,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the user equipment according to the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an association relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode. In the case of and feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and the performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

如图10所示,本发明实施例还提供了一种用户设备20,该用户设备20包括处理器21、存储器22、总线系统23和发送器24。其中,处理器21、存储器22和发送器24通过总线系统23相连,该存储器22用于存储指令,该处理器21用于执行该存储器22存储的指令,以控制发送器24发送信号。其中,该处理器21用于:在第一码本集合中确定第一预编码矩阵,该第一码本集合为应用于四天线的第二码本集合的子集,该第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;该处理器21还用于:确定用于指示该第一预编码矩阵的联合编码值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;该发送器24用于:向基站发送包括该联合编码值的预编码矩阵指示PMI,以便于该基站根据该PMI确定该第一预编码矩阵。As shown in FIG. 10 , the embodiment of the present invention also provides a user equipment 20 , where the user equipment 20 includes a processor 21 , a memory 22 , a bus system 23 and a transmitter 24 . Wherein, the processor 21 , the memory 22 and the transmitter 24 are connected through a bus system 23 , the memory 22 is used to store instructions, and the processor 21 is used to execute the instructions stored in the memory 22 to control the transmitter 24 to send signals. Wherein, the processor 21 is configured to: determine a first precoding matrix in a first codebook set, the first codebook set is a subset of a second codebook set applied to four antennas, and the second codebook set The included precoding matrix is indicated by a first codebook index and a second codebook index; the processor 21 is further configured to: determine a joint coding value used to indicate the first precoding matrix, where the joint coding value is the same as the The rank of the first precoding matrix has a first correspondence, the joint encoding value has a second correspondence with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5; the transmitter 24 is configured to: send a precoding matrix indication PMI including the joint coding value to the base station, so that the base station determines the first precoding matrix according to the PMI.

可选地,作为一个实施例,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定。Optionally, as an embodiment, when the number of bits carrying the joint encoding value is 4, the corresponding relationship between the joint encoding value and the rank of the first precoding matrix and the value of the first codebook index is as follows List B1, Table B2 or Table B3 determined.

可选地,作为一个实施例,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定。Optionally, as an embodiment, when the number of bits carrying the joint coding value is 5, the corresponding relationship between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is shown in the following table B4 or Table B5 to determine.

应理解,根据本发明实施例的用户设备20可对应于执行根据本发明实施例的传输预编码矩阵的方法的用户设备,以及用户设备700,并且用户设备20中的各个模块的上述和其它操作和/或功能为了实现图2中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the user equipment 20 according to the embodiment of the present invention may correspond to the user equipment performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the user equipment 700, and the above-mentioned and other operations of the various modules in the user equipment 20 And/or functions are to realize the corresponding flow of the method in FIG. 2 , and for the sake of brevity, details are not repeated here.

因此,本发明实施例的用户设备,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the user equipment in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the precoding matrices applied to dual-polarized antennas will not be affected. performance, which can improve system performance and enhance user experience.

如图11所示,本发明实施例还提供了一种基站30,该基站30包括处理器31、存储器32、总线系统33和接收器34。其中,处理器31、存储器32和接收器34通过总线系统33相连,该存储器32用于存储指令,该处理器31用于执行该存储器32存储的指令,以控制接收器34接收信号。其中,该接收器34用于:接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;该处理器31用于:根据该第一PMI的值和该第二PMI的值,确定第一码本索引的值和第二码本索引的值,该第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,该第一码本集合为该第二码本集合的子集;该处理器31还用于:根据该第一码本索引的值和该第二码本索引的值,在该第二码本集合中确定该第一预编码矩阵;其中,该第一PMI的值与该第一码本索引的值具有第一对应关系,该第二PMI的值与该第二码本索引的值具有第二对应关系,并且该第一PMI相应的该第一码本索引的取值范围与该第二PMI的值相应的该第二码本索引的取值范围具有关联关系。As shown in FIG. 11 , an embodiment of the present invention further provides a base station 30 , where the base station 30 includes a processor 31 , a memory 32 , a bus system 33 and a receiver 34 . Wherein, the processor 31 , the memory 32 and the receiver 34 are connected through a bus system 33 , the memory 32 is used to store instructions, and the processor 31 is used to execute the instructions stored in the memory 32 to control the receiver 34 to receive signals. Wherein, the receiver 34 is configured to: receive the precoding matrix indication PMI sent by the user equipment, where the PMI includes the value of the first PMI and the value of the second PMI used to indicate the first precoding matrix in the first codebook set ; The processor 31 is used to: determine the value of the first codebook index and the value of the second codebook index according to the value of the first PMI and the value of the second PMI, the first codebook index and the second codebook index This index is used to indicate the precoding matrix in the second codebook set, the first codebook set is a subset of the second codebook set; the processor 31 is also used to: according to the value of the first codebook index and the value of the second codebook index, the first precoding matrix is determined in the second codebook set; wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, and the The value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the value range of the first codebook index corresponding to the first PMI is the second code corresponding to the value of the second PMI. The value range of this index has an association relationship.

因此,本发明实施例的基站,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the base station of the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an associated relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode and In the case of feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

可选地,作为一个实施例,该第二PMI相应的该第二码本索引的取值范围由该第一PMI相应的该第一码本索引的取值和/或取值范围唯一确定。Optionally, as an embodiment, the value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI.

可选地,作为一个实施例,该第一PMI相应的该第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,该第二PMI相应的该第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,该至少两个第一取值集合与该至少两个第二取值集合具有一一对应关系。Optionally, as an embodiment, the value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the second PMI corresponding to the second codebook index The value range of the index includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets.

可选地,作为一个实施例,该至少两个第一取值集合中的每个第一取值集合包括至少两个取值,该至少两个第二取值集合中的每个第二取值集合包括至少两个取值。Optionally, as an embodiment, each first value set in the at least two first value sets includes at least two values, and each second value in the at least two second value sets A value set includes at least two values.

可选地,作为一个实施例,该第二PMI相应的该第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载该第二PMI的值的比特数。Optionally, as an embodiment, the value range of the second codebook index corresponding to the second PMI includes values greater than 2 N , where N is the number of bits carrying the value of the second PMI.

可选地,作为一个实施例,该第一码本集合包括八个离散傅里叶变换DFT向量;或该第一码本集合包括的DFT向量的数量为该第一码本集合包括的预编码矩阵的数量的一半。Optionally, as an embodiment, the first codebook set includes eight discrete Fourier transform DFT vectors; or the number of DFT vectors included in the first codebook set is the number of precoded vectors included in the first codebook set Half the number of matrices.

可选地,作为一个实施例,该第一PMI、该第二PMI、与该第一PMI相应的该第一码本索引以及与该第二PMI相应的该第二码本索引的取值由表A1确定。Optionally, as an embodiment, values of the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the second codebook index corresponding to the second PMI are determined by Table A1 OK.

可选地,作为一个实施例,该第二码本集合包括的预编码矩阵W由表A2确定。Optionally, as an embodiment, the precoding matrix W included in the second codebook set is determined by Table A2.

可选地,作为一个实施例,该第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或该第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。Optionally, as an embodiment, the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the precoding matrix included in the first codebook set is applied to four antennas and has a rank of 1 precoding matrix.

可选地,作为一个实施例,该接收器34具体用于在一个上行信道上接收该用户设备发送的该PMI。Optionally, as an embodiment, the receiver 34 is specifically configured to receive the PMI sent by the user equipment on an uplink channel.

应理解,根据本发明实施例的基站30可对应于执行根据本发明实施例的传输预编码矩阵的方法的基站,以及基站800,并且基站30中的各个模块的上述和其它操作和/或功能为了实现图3中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the base station 30 according to the embodiment of the present invention may correspond to the base station performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the base station 800, and the above-mentioned and other operations and/or functions of the modules in the base station 30 In order to realize the corresponding flow of the method in FIG. 3 , for the sake of brevity, details are not repeated here.

因此,本发明实施例的基站,通过第一PMI相应的第一码本索引的取值范围与第二PMI相应的第二码本索引的取值范围具有关联关系,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, in the base station of the embodiment of the present invention, because the value range of the first codebook index corresponding to the first PMI has an associated relationship with the value range of the second codebook index corresponding to the second PMI, it can be used without changing the feedback mode and In the case of feedback bits, more precoding matrices suitable for uniform linear array antennas are indicated, and performance applied to dual-polarized antennas can be guaranteed not to be affected, thereby improving system performance and enhancing user experience.

如图12所示,本发明实施例还提供了一种基站40,该基站40包括处理器41、存储器42、总线系统43和接收器44。其中,处理器41、存储器42和接收器44通过总线系统43相连,该存储器42用于存储指令,该处理器41用于执行该存储器42存储的指令,以控制接收器44接收信号。其中,该接收器44用于:接收用户设备发送的预编码矩阵指示PMI,该PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;该处理器41用于:根据该联合编码值,确定该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,其中,该联合编码值与该第一预编码矩阵的秩具有第一对应关系,该联合编码值与该第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载该联合编码值的比特数为4个或5个;该处理器41还用于:根据该第一预编码矩阵的秩和该第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定该第一预编码矩阵,该第一码本集合为该第二码本集合的子集。As shown in FIG. 12 , the embodiment of the present invention also provides a base station 40 , where the base station 40 includes a processor 41 , a memory 42 , a bus system 43 and a receiver 44 . Wherein, the processor 41 , the memory 42 and the receiver 44 are connected through a bus system 43 , the memory 42 is used to store instructions, and the processor 41 is used to execute the instructions stored in the memory 42 to control the receiver 44 to receive signals. Wherein, the receiver 44 is configured to: receive the precoding matrix indication PMI sent by the user equipment, where the PMI includes a joint coding value for indicating the first precoding matrix in the first codebook set; the processor 41 is configured to: According to the joint encoding value, determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, wherein the joint encoding value and the rank of the first precoding matrix have a first correspondence relationship, the joint encoding value has a second corresponding relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5; the processor 41 is also used to : According to the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, determine the first precoding matrix in the second codebook set applied to four antennas, the first code This set is a subset of the second codebook set.

可选地,作为一个实施例,在承载该联合编码值的比特数为4个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B1、表B2或表B3确定。Optionally, as an embodiment, when the number of bits carrying the joint encoding value is 4, the corresponding relationship between the joint encoding value and the rank of the first precoding matrix and the value of the first codebook index is as follows List B1, Table B2 or Table B3 determined.

可选地,作为一个实施例,在承载该联合编码值的比特数为5个时,该联合编码值与该第一预编码矩阵的秩和该第一码本索引的值的对应关系由下列表B4或表B5确定。Optionally, as an embodiment, when the number of bits carrying the joint coding value is 5, the corresponding relationship between the joint coding value and the rank of the first precoding matrix and the value of the first codebook index is as follows List B4 or Table B5 OK.

应理解,根据本发明实施例的基站40可对应于执行根据本发明实施例的传输预编码矩阵的方法的基站,以及基站900,并且基站40中的各个模块的上述和其它操作和/或功能为了实现图4中的方法的相应流程,为了简洁,在此不再赘述。It should be understood that the base station 40 according to the embodiment of the present invention may correspond to the base station performing the method for transmitting a precoding matrix according to the embodiment of the present invention, and the base station 900, and the above-mentioned and other operations and/or functions of the modules in the base station 40 In order to realize the corresponding flow of the method in FIG. 4 , for the sake of brevity, details are not repeated here.

因此,本发明实施例的用户设备,能够在不改变反馈模式和反馈比特的情况下,指示更多的适用于均匀线阵天线的预编码矩阵,并能够保证不影响应用于双极化天线的性能,从而能够提高系统性能,并增强用户体验。Therefore, the user equipment in the embodiment of the present invention can indicate more precoding matrices suitable for uniform linear array antennas without changing the feedback mode and feedback bits, and can ensure that the precoding matrices applied to dual-polarized antennas will not be affected. performance, which can improve system performance and enhance user experience.

本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分,或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium Among them, several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the technical scope disclosed in the present invention. Modifications or replacements shall all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (52)

1.一种传输预编码矩阵的方法,其特征在于,包括:1. A method for transmitting a precoding matrix, comprising: 在第一码本集合中确定第一预编码矩阵,所述第一码本集合为第二码本集合的子集,所述第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;Determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set, and the precoding matrix included in the second codebook set is determined by the first codebook index and a second codebook index indication; 确定用于指示所述第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;determining a value of a first precoding matrix indication PMI and a value of a second PMI used to indicate the first precoding matrix; 向基站发送PMI,所述PMI包括用于指示所述第一预编码矩阵的所述第一PMI的值和所述第二PMI的值,以便于所述基站根据所述PMI确定所述预编码矩阵;sending a PMI to the base station, where the PMI includes the value of the first PMI and the value of the second PMI used to indicate the first precoding matrix, so that the base station determines the precoding according to the PMI matrix; 其中,所述第一PMI的值与所述第一码本索引的值具有第一对应关系,所述第二PMI的值与所述第二码本索引的值具有第二对应关系,并且所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the The value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI. 2.根据权利要求1所述的方法,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系,包括:2. The method according to claim 1, wherein the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI Ranges of values are associated and include: 所述第二PMI相应的所述第二码本索引的取值范围由所述第一PMI相应的所述第一码本索引的取值和/或取值范围唯一确定。The value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI. 3.根据权利要求1所述的方法,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系,包括:3. The method according to claim 1, wherein the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI Ranges of values are associated and include: 所述第一PMI相应的所述第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,所述第二PMI相应的所述第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,所述至少两个第一取值集合与所述至少两个第二取值集合具有一一对应关系。The value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the value range of the second codebook index corresponding to the second PMI The range includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets. 4.根据权利要求3所述的方法,其特征在于,所述至少两个第一取值集合中的每个第一取值集合包括至少两个取值,所述至少两个第二取值集合中的每个第二取值集合包括至少两个取值。4. The method according to claim 3, wherein each first value set in the at least two first value sets includes at least two values, and the at least two second value sets Each second value set in the set includes at least two values. 5.根据权利要求1所述的方法,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载所述第二PMI的值的比特数。5. The method according to claim 1, wherein the value range of the second codebook index corresponding to the second PMI includes a number of values greater than 2 N , where N is the number of values that bear the second codebook index. 2 The number of bits of the value of the PMI. 6.根据权利要求1所述的方法,其特征在于,所述第一码本集合包括八个离散傅里叶变换DFT向量;或6. The method according to claim 1, wherein said first codebook set comprises eight discrete Fourier transform DFT vectors; or 所述第一码本集合包括的DFT向量的数量为所述第一码本集合包括的预编码矩阵的数量的一半。The number of DFT vectors included in the first codebook set is half of the number of precoding matrices included in the first codebook set. 7.根据权利要求1至6中任一项所述的方法,其特征在于,所述第一PMI、所述第二PMI、与所述第一PMI相应的所述第一码本索引以及与所述第二PMI相应的所述第二码本索引的取值由表A1确定:7. The method according to any one of claims 1 to 6, wherein the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the The value of the second codebook index corresponding to the second PMI is determined by Table A1: 表A1Table A1 IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33
其中,IPMI1表示所述第一PMI;IPMI2表示所述第二PMI;i1表示所述第一码本索引;i2表示所述第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .
8.根据权利要求7所述的方法,其特征在于,所述第二码本集合包括的预编码矩阵W由表A2确定:8. The method according to claim 7, wherein the precoding matrix W included in the second codebook set is determined by Table A2: 表A2Table A2 其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers. 9.根据权利要求1至6中任一项所述的方法,其特征在于,所述第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或所述第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。9. The method according to any one of claims 1 to 6, wherein the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the first codebook The precoding matrix included in the set is a precoding matrix with rank 1 applied to four antennas. 10.根据权利要求1至6中任一项所述的方法,其特征在于,所述向基站发送PMI,包括:10. The method according to any one of claims 1 to 6, wherein the sending the PMI to the base station comprises: 在一个上行信道上向所述基站发送所述PMI。sending the PMI to the base station on an uplink channel. 11.一种传输预编码矩阵的方法,其特征在于,包括:11. A method for transmitting a precoding matrix, comprising: 在第一码本集合中确定第一预编码矩阵,所述第一码本集合为应用于四天线的第二码本集合的子集,所述第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;Determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set applied to four antennas, and the precoding matrix included in the second codebook set is determined by the first codebook set A codebook index and a second codebook index indication; 确定用于指示所述第一预编码矩阵的联合编码值,其中,所述联合编码值与所述第一预编码矩阵的秩具有第一对应关系,所述联合编码值与所述第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载所述联合编码值的比特数为4个或5个;determining a joint encoding value used to indicate the first precoding matrix, wherein the joint encoding value has a first corresponding relationship with the rank of the first precoding matrix, and the joint encoding value and the first precoding matrix The value of the first codebook index of the encoding matrix has a second corresponding relationship, and the number of bits carrying the joint encoding value is 4 or 5; 向基站发送包括所述联合编码值的预编码矩阵指示PMI,以便于所述基站根据所述PMI确定所述第一预编码矩阵。Sending a precoding matrix indication PMI including the joint coding value to the base station, so that the base station determines the first precoding matrix according to the PMI. 12.根据权利要求11所述的方法,其特征在于,在承载所述联合编码值的比特数为4个时,所述联合编码值与所述第一预编码矩阵的秩和所述第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:12. The method according to claim 11, wherein when the number of bits carrying the joint encoding value is 4, the rank of the joint encoding value and the first precoding matrix is equal to the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3: 表B1Table B1 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1
8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )
表B2Table B2 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
表B3Table B3 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
13.根据权利要求11或12所述的方法,其特征在于,在承载所述联合编码值的比特数为5个时,所述联合编码值与所述第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:13. The method according to claim 11 or 12, wherein when the number of bits carrying the joint encoding value is 5, the rank sum of the joint encoding value and the first precoding matrix is first The correspondence between the values of the codebook index is determined by the following table B4 or table B5: 表B4Table B4 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16
表B5Form B5 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00
1717 44 00 18-3118-31 保留reserve null
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
14.一种传输预编码矩阵的方法,其特征在于,包括:14. A method for transmitting a precoding matrix, comprising: 接收用户设备发送的预编码矩阵指示PMI,所述PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;receiving the precoding matrix indication PMI sent by the user equipment, where the PMI includes a value of the first PMI and a value of the second PMI used to indicate the first precoding matrix in the first codebook set; 根据所述第一PMI的值和所述第二PMI的值,确定第一码本索引的值和第二码本索引的值,所述第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,所述第一码本集合为所述第二码本集合的子集;According to the value of the first PMI and the value of the second PMI, determine the value of the first codebook index and the value of the second codebook index, the first codebook index and the second codebook index are used to indicate a precoding matrix in a second codebook set, the first codebook set being a subset of the second codebook set; 根据所述第一码本索引的值和所述第二码本索引的值,在所述第二码本集合中确定所述第一预编码矩阵;determining the first precoding matrix in the second codebook set according to the value of the first codebook index and the value of the second codebook index; 其中,所述第一PMI的值与所述第一码本索引的值具有第一对应关系,所述第二PMI的值与所述第二码本索引的值具有第二对应关系,并且所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI的值相应的所述第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the The value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the value of the second PMI. 15.根据权利要求14所述的方法,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系,包括:15. The method according to claim 14, wherein the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI Ranges of values are associated and include: 所述第二PMI相应的所述第二码本索引的取值范围由所述第一PMI相应的所述第一码本索引的取值和/或取值范围唯一确定。The value range of the second codebook index corresponding to the second PMI is uniquely determined by the value and/or value range of the first codebook index corresponding to the first PMI. 16.根据权利要求14所述的方法,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系,包括:16. The method according to claim 14, wherein the value range of the first codebook index corresponding to the first PMI is the same as the value range of the second codebook index corresponding to the second PMI Ranges of values are associated and include: 所述第一PMI相应的所述第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,所述第二PMI相应的所述第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,所述至少两个第一取值集合与所述至少两个第二取值集合具有一一对应关系。The value range of the first codebook index corresponding to the first PMI includes at least two first value sets with different elements, and the value range of the second codebook index corresponding to the second PMI The range includes at least two second value sets with different elements, and the at least two first value sets have a one-to-one correspondence with the at least two second value sets. 17.根据权利要求16所述的方法,其特征在于,所述至少两个第一取值集合中的每个第一取值集合包括至少两个取值,所述至少两个第二取值集合中的每个第二取值集合包括至少两个取值。17. The method according to claim 16, wherein each first value set in the at least two first value sets includes at least two values, and the at least two second value sets Each second value set in the set includes at least two values. 18.根据权利要求14所述的方法,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载所述第二PMI的值的比特数。18. The method according to claim 14, wherein the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the 2 The number of bits of the value of the PMI. 19.根据权利要求14所述的方法,其特征在于,所述第一码本集合包括八个离散傅里叶变换DFT向量;或19. The method of claim 14, wherein the first set of codebooks comprises eight discrete Fourier transform (DFT) vectors; or 所述第一码本集合包括的DFT向量的数量为所述第一码本集合包括的预编码矩阵的数量的一半。The number of DFT vectors included in the first codebook set is half of the number of precoding matrices included in the first codebook set. 20.根据权利要求14至19中任一项所述的方法,其特征在于,所述第一PMI、所述第二PMI、与所述第一PMI相应的所述第一码本索引以及与所述第二PMI相应的所述第二码本索引的取值由表A1确定:20. The method according to any one of claims 14 to 19, wherein the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the The value of the second codebook index corresponding to the second PMI is determined by Table A1: 表A1Table A1 IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33
其中,IPMI1表示所述第一PMI;IPMI2表示所述第二PMI;i1表示所述第一码本索引;i2表示所述第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .
21.根据权利要求20所述的方法,其特征在于,所述第二码本集合包括的预编码矩阵W由表A2确定:21. The method according to claim 20, wherein the precoding matrix W included in the second codebook set is determined by Table A2: 表A2Table A2 其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers. 22.根据权利要求14至19中任一项所述的方法,其特征在于,所述第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或所述第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。22. The method according to any one of claims 14 to 19, wherein the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the first codebook The precoding matrix included in the set is a precoding matrix with rank 1 applied to four antennas. 23.根据权利要求14至19中任一项所述的方法,其特征在于,所述接收用户设备发送的预编码矩阵指示PMI,包括:23. The method according to any one of claims 14 to 19, wherein the receiving the precoding matrix indication PMI sent by the user equipment includes: 在一个上行信道上接收所述用户设备发送的所述PMI。The PMI sent by the user equipment is received on an uplink channel. 24.一种传输预编码矩阵的方法,其特征在于,包括:24. A method for transmitting a precoding matrix, comprising: 接收用户设备发送的预编码矩阵指示PMI,所述PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;Receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a joint coding value used to indicate the first precoding matrix in the first codebook set; 根据所述联合编码值,确定所述第一预编码矩阵的秩和所述第一预编码矩阵的第一码本索引的值,其中,所述联合编码值与所述第一预编码矩阵的秩具有第一对应关系,所述联合编码值与所述第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载所述联合编码值的比特数为4个或5个;According to the joint encoding value, determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, wherein the joint encoding value and the first precoding matrix The rank has a first correspondence, the joint encoding value has a second correspondence with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5 ; 根据所述第一预编码矩阵的秩和所述第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定所述第一预编码矩阵,所述第一码本集合为所述第二码本集合的子集。determining the first precoding matrix in a second codebook set applied to four antennas according to the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix, the The first codebook set is a subset of the second codebook set. 25.根据权利要求24所述的方法,其特征在于,在承载所述联合编码值的比特数为4个时,所述联合编码值与所述第一预编码矩阵的秩和所述第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:25. The method according to claim 24, wherein when the number of bits carrying the joint encoding value is 4, the rank of the joint encoding value and the first precoding matrix is equal to the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3: 表B1Table B1 IRI/PMI1 I RI/PMI1 RIRI i1 i 1
0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )
表B2Table B2 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
表B3Table B3 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
26.根据权利要求24或25所述的方法,其特征在于,在承载所述联合编码值的比特数为5个时,所述联合编码值与所述第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:26. The method according to claim 24 or 25, wherein when the number of bits carrying the joint encoding value is 5, the rank sum of the joint encoding value and the first precoding matrix is first The correspondence between the values of the codebook index is determined by the following table B4 or table B5: 表B4Table B4 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16
表B5Form B5 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )
1616 33 00 1717 44 00 18-3118-31 保留reserve null
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
27.一种用户设备,其特征在于,包括:27. A user equipment, characterized by comprising: 第一确定模块,用于在第一码本集合中确定第一预编码矩阵,所述第一码本集合为第二码本集合的子集,所述第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;The first determining module is configured to determine the first precoding matrix in the first codebook set, the first codebook set is a subset of the second codebook set, and the precoding matrix included in the second codebook set Indicated by a first codebook index and a second codebook index; 第二确定模块,用于确定用于指示所述第一确定模块确定的所述第一预编码矩阵的第一预编码矩阵指示PMI的值和第二PMI的值;A second determining module, configured to determine a value of a first precoding matrix indication PMI and a value of a second PMI used to indicate the first precoding matrix determined by the first determining module; 发送模块,用于向基站发送PMI,所述PMI包括所述第二确定模块确定的用于指示所述第一预编码矩阵的所述第一PMI的值和所述第二PMI的值,以便于所述基站根据所述PMI确定所述预编码矩阵;a sending module, configured to send a PMI to a base station, where the PMI includes a value of the first PMI and a value of the second PMI determined by the second determining module to indicate the first precoding matrix, so that determining the precoding matrix at the base station according to the PMI; 其中,所述第一PMI的值与所述第一码本索引的值具有第一对应关系,所述第二PMI的值与所述第二码本索引的值具有第二对应关系,并且所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI相应的所述第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the The value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the second PMI. 28.根据权利要求27所述的用户设备,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围由所述第一PMI相应的所述第一码本索引的取值和/或取值范围唯一确定。28. The user equipment according to claim 27, wherein the value range of the second codebook index corresponding to the second PMI is determined by the value range of the first codebook index corresponding to the first PMI The value and/or value range are uniquely determined. 29.根据权利要求27所述的用户设备,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,所述第二PMI相应的所述第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,所述至少两个第一取值集合与所述至少两个第二取值集合具有一一对应关系。29. The user equipment according to claim 27, wherein the value range of the first codebook index corresponding to the first PMI includes at least two first value sets whose elements are different from each other, so The value range of the second codebook index corresponding to the second PMI includes at least two second value sets whose elements are different from each other, and the at least two first value sets are the same as the at least two second value sets. The set of values has a one-to-one correspondence. 30.根据权利要求29所述的用户设备,其特征在于,所述至少两个第一取值集合中的每个第一取值集合包括至少两个取值,所述至少两个第二取值集合中的每个第二取值集合包括至少两个取值。30. The user equipment according to claim 29, wherein each first value set in the at least two first value sets includes at least two values, and the at least two second value sets Each second value set in the value set includes at least two values. 31.根据权利要求27所述的用户设备,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载所述第二PMI的值的比特数。31. The user equipment according to claim 27, wherein the value range of the second codebook index corresponding to the second PMI includes more than 2 N , where N is the The number of bits of the value of the second PMI. 32.根据权利要求27所述的用户设备,其特征在于,所述第一码本集合包括八个离散傅里叶变换DFT向量;或32. The user equipment according to claim 27, wherein the first codebook set includes eight discrete Fourier transform (DFT) vectors; or 所述第一码本集合包括的DFT向量的数量为所述第一码本集合包括的预编码矩阵的数量的一半。The number of DFT vectors included in the first codebook set is half of the number of precoding matrices included in the first codebook set. 33.根据权利要求27至32中任一项所述的用户设备,其特征在于,所述第一PMI、所述第二PMI、与所述第一PMI相应的所述第一码本索引以及与所述第二PMI相应的所述第二码本索引的取值由表A1确定:33. The user equipment according to any one of claims 27 to 32, wherein the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and The value of the second codebook index corresponding to the second PMI is determined by Table A1: 表A1Table A1 IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33
其中,IPMI1表示所述第一PMI;IPMI2表示所述第二PMI;i1表示所述第一码本索引;i2表示所述第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .
34.根据权利要求33所述的用户设备,其特征在于,所述第二码本集合包括的预编码矩阵W由表A2确定:34. The user equipment according to claim 33, wherein the precoding matrix W included in the second codebook set is determined by Table A2: 表A2Table A2 其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers. 35.根据权利要求27至32中任一项所述的用户设备,其特征在于,所述第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或所述第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。35. The user equipment according to any one of claims 27 to 32, wherein the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the first codebook set The precoding matrix included in this set is a precoding matrix applied to four antennas with a rank of 1. 36.根据权利要求27至32中任一项所述的用户设备,其特征在于,所述发送模块具体用于:在一个上行信道上向所述基站发送所述PMI。36. The user equipment according to any one of claims 27 to 32, wherein the sending module is specifically configured to: send the PMI to the base station on an uplink channel. 37.一种用户设备,其特征在于,包括:37. A user equipment, characterized by comprising: 第一确定模块,用于在第一码本集合中确定第一预编码矩阵,所述第一码本集合为应用于四天线的第二码本集合的子集,所述第二码本集合包括的预编码矩阵由第一码本索引和第二码本索引指示;The first determining module is configured to determine a first precoding matrix in a first codebook set, the first codebook set is a subset of a second codebook set applied to four antennas, and the second codebook set The included precoding matrix is indicated by a first codebook index and a second codebook index; 第二确定模块,用于确定用于指示所述第一确定模块确定的所述第一预编码矩阵的联合编码值,其中,所述联合编码值与所述第一预编码矩阵的秩具有第一对应关系,所述联合编码值与所述第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载所述联合编码值的比特数为4个或5个;The second determining module is configured to determine a joint encoding value indicating the first precoding matrix determined by the first determining module, wherein the joint encoding value and the rank of the first precoding matrix have a rank of the first precoding matrix A correspondence relationship, the joint encoding value has a second correspondence relationship with the value of the first codebook index of the first precoding matrix, and the number of bits carrying the joint encoding value is 4 or 5; 发送模块,用于向基站发送预编码矩阵指示PMI,所述PMI包括所述第二确定模块确定的所述联合编码值,以便于所述基站根据所述PMI确定所述第一预编码矩阵。A sending module, configured to send a precoding matrix indication PMI to a base station, where the PMI includes the joint coding value determined by the second determining module, so that the base station determines the first precoding matrix according to the PMI. 38.根据权利要求37所述的用户设备,其特征在于,在承载所述联合编码值的比特数为4个时,所述联合编码值与所述第一预编码矩阵的秩和所述第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:38. The user equipment according to claim 37, wherein when the number of bits carrying the joint coding value is 4, the rank sum of the joint coding value and the first precoding matrix sums the rank of the first precoding matrix The corresponding relationship of the value of a codebook index is determined by the following table B1, table B2 or table B3: 表B1Table B1 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )
表B2Table B2 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
表B3Table B3 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
39.根据权利要求37或38所述的用户设备,其特征在于,在承载所述联合编码值的比特数为5个时,所述联合编码值与所述第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:39. The user equipment according to claim 37 or 38, wherein when the number of bits carrying the joint coding value is 5, the rank sum of the joint coding value and the first precoding matrix The corresponding relationship of the value of a codebook index is determined by the following table B4 or table B5: 表B4Table B4 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16
表B5Form B5 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00 1717 44 00
18-3118-31 保留reserve null
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
40.一种基站,其特征在于,包括:40. A base station, comprising: 接收模块,用于接收用户设备发送的预编码矩阵指示PMI,所述PMI包括用于指示第一码本集合中的第一预编码矩阵的第一PMI的值和第二PMI的值;A receiving module, configured to receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a value of the first PMI and a value of the second PMI used to indicate the first precoding matrix in the first codebook set; 第一确定模块,用于根据所述接收模块接收的所述第一PMI的值和所述第二PMI的值,确定第一码本索引的值和第二码本索引的值,所述第一码本索引和第二码本索引用于指示第二码本集合中的预编码矩阵,所述第一码本集合为所述第二码本集合的子集;A first determining module, configured to determine a value of a first codebook index and a value of a second codebook index according to the value of the first PMI and the value of the second PMI received by the receiving module, the first codebook index A codebook index and a second codebook index are used to indicate a precoding matrix in a second codebook set, the first codebook set being a subset of the second codebook set; 第二确定模块,用于根据所述第一确定模块确定的所述第一码本索引的值和所述第二码本索引的值,在所述第二码本集合中确定所述第一预编码矩阵;The second determination module is configured to determine the first codebook index in the second codebook set according to the value of the first codebook index and the value of the second codebook index determined by the first determination module. precoding matrix; 其中,所述第一PMI的值与所述第一码本索引的值具有第一对应关系,所述第二PMI的值与所述第二码本索引的值具有第二对应关系,并且所述第一PMI相应的所述第一码本索引的取值范围与所述第二PMI的值相应的所述第二码本索引的取值范围具有关联关系。Wherein, the value of the first PMI has a first corresponding relationship with the value of the first codebook index, the value of the second PMI has a second corresponding relationship with the value of the second codebook index, and the The value range of the first codebook index corresponding to the first PMI is associated with the value range of the second codebook index corresponding to the value of the second PMI. 41.根据权利要求40所述的基站,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围由所述第一PMI相应的所述第一码本索引的取值和/或取值范围唯一确定。41. The base station according to claim 40, wherein the value range of the second codebook index corresponding to the second PMI is determined by the value range of the first codebook index corresponding to the first PMI The value and/or value range is uniquely determined. 42.根据权利要求40所述的基站,其特征在于,所述第一PMI相应的所述第一码本索引的取值范围包括元素互不相同的至少两个第一取值集合,所述第二PMI相应的所述第二码本索引的取值范围包括元素互不相同的至少两个第二取值集合,所述至少两个第一取值集合与所述至少两个第二取值集合具有一一对应关系。42. The base station according to claim 40, wherein the value range of the first codebook index corresponding to the first PMI includes at least two first value sets whose elements are different from each other, the The value range of the second codebook index corresponding to the second PMI includes at least two second value sets whose elements are different from each other, the at least two first value sets and the at least two second value sets Collections of values have a one-to-one correspondence. 43.根据权利要求42所述的基站,其特征在于,所述至少两个第一取值集合中的每个第一取值集合包括至少两个取值,所述至少两个第二取值集合中的每个第二取值集合包括至少两个取值。43. The base station according to claim 42, wherein each first value set in the at least two first value sets includes at least two values, and the at least two second value sets Each second value set in the set includes at least two values. 44.根据权利要求40所述的基站,其特征在于,所述第二PMI相应的所述第二码本索引的取值范围包括的取值的数量大于2N,其中N为承载所述第二PMI的值的比特数。44. The base station according to claim 40, wherein the value range of the second codebook index corresponding to the second PMI includes a number of values greater than 2 N , where N is the number of values that bear the second codebook index 2 The number of bits of the value of the PMI. 45.根据权利要求40所述的基站,其特征在于,所述第一码本集合包括八个离散傅里叶变换DFT向量;或45. The base station according to claim 40, wherein the first codebook set comprises eight discrete Fourier transform DFT vectors; or 所述第一码本集合包括的DFT向量的数量为所述第一码本集合包括的预编码矩阵的数量的一半。The number of DFT vectors included in the first codebook set is half of the number of precoding matrices included in the first codebook set. 46.根据权利要求40至45中任一项所述的基站,其特征在于,所述第一PMI、所述第二PMI、与所述第一PMI相应的所述第一码本索引以及与所述第二PMI相应的所述第二码本索引的取值由表A1确定:46. The base station according to any one of claims 40 to 45, wherein the first PMI, the second PMI, the first codebook index corresponding to the first PMI, and the The value of the second codebook index corresponding to the second PMI is determined by Table A1: 表A1Table A1 IPMI1 I PMI1 i1=2IPMI1 i 1 =2I PMI1 IPMI2 I PMI2 i2 i 2 00 00 00 00 00 00 11 22 11 22 00 11 11 22 11 33 22 44 00 00 22 44 11 22 33 66 00 11 33 66 11 33 44 88 00 00 44 88 11 22 55 1010 00 11 55 1010 11 33 66 1212 00 00 66 1212 11 22 77 1414 00 11 77 1414 11 33
其中,IPMI1表示所述第一PMI;IPMI2表示所述第二PMI;i1表示所述第一码本索引;i2表示所述第二码本索引i2Wherein, IPMI1 represents the first PMI; IPMI2 represents the second PMI; i 1 represents the first codebook index; i 2 represents the second codebook index i 2 .
47.根据权利要求46所述的基站,其特征在于,所述第二码本集合包括的预编码矩阵W由表A2确定:47. The base station according to claim 46, wherein the precoding matrix W included in the second codebook set is determined by Table A2: 表A2Table A2 其中,vm=[1 ej2πm/32]Tm和n为非负整数。in, v m =[1 e j2πm/32 ] T , m and n are non-negative integers. 48.根据权利要求40至45中任一项所述的基站,其特征在于,所述第一码本集合包括的预编码矩阵为应用于四天线的预编码矩阵;或所述第一码本集合包括的预编码矩阵为应用于四天线且秩为1的预编码矩阵。48. The base station according to any one of claims 40 to 45, wherein the precoding matrix included in the first codebook set is a precoding matrix applied to four antennas; or the first codebook set The precoding matrix included in the set is a precoding matrix with rank 1 applied to four antennas. 49.根据权利要求40至45中任一项所述的基站,其特征在于,所述接收模块具体用于:在一个上行信道上接收所述用户设备发送的所述PMI。49. The base station according to any one of claims 40 to 45, wherein the receiving module is specifically configured to: receive the PMI sent by the user equipment on an uplink channel. 50.一种基站,其特征在于,包括:50. A base station, comprising: 接收模块,用于接收用户设备发送的预编码矩阵指示PMI,所述PMI包括用于指示第一码本集合中的第一预编码矩阵的联合编码值;A receiving module, configured to receive a precoding matrix indication PMI sent by the user equipment, where the PMI includes a joint coding value used to indicate the first precoding matrix in the first codebook set; 第一确定模块,用于根据所述接收模块接收的所述联合编码值,确定所述第一预编码矩阵的秩和所述第一预编码矩阵的第一码本索引的值,其中,所述联合编码值与所述第一预编码矩阵的秩具有第一对应关系,所述联合编码值与所述第一预编码矩阵的第一码本索引的值具有第二对应关系,并且承载所述联合编码值的比特数为4个或5个;A first determining module, configured to determine the rank of the first precoding matrix and the value of the first codebook index of the first precoding matrix according to the joint coding value received by the receiving module, wherein the The joint encoding value has a first corresponding relationship with the rank of the first precoding matrix, the joint encoding value has a second corresponding relationship with the value of the first codebook index of the first precoding matrix, and carries the The number of bits of the joint coding value is 4 or 5; 第二确定模块,用于根据所述第一确定模块确定的所述第一预编码矩阵的秩和所述第一预编码矩阵的第一码本索引的值,在应用于四天线的第二码本集合中确定所述第一预编码矩阵,所述第一码本集合为所述第二码本集合的子集。The second determining module is configured to, according to the rank of the first precoding matrix determined by the first determining module and the value of the first codebook index of the first precoding matrix, apply to the second four-antenna The first precoding matrix is determined in a codebook set, and the first codebook set is a subset of the second codebook set. 51.根据权利要求50所述的基站,其特征在于,在承载所述联合编码值的比特数为4个时,所述联合编码值与所述第一预编码矩阵的秩和所述第一码本索引的值的对应关系由下列表B1、表B2或表B3确定:51. The base station according to claim 50, characterized in that, when the number of bits carrying the joint coding value is 4, the rank of the joint coding value and the first precoding matrix sums the first The correspondence between the values of the codebook index is determined by the following table B1, table B2 or table B3: 表B1Table B1 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1
8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 )
表B2Table B2 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-138-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
表B3Table B3 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-60-6 11 2IRI/PMI1 2I RI/PMI1 7-137-13 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1414 33 00 1515 44 00
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
52.根据权利要求51或52所述的基站,其特征在于,在承载所述联合编码值的比特数为5个时,所述联合编码值与所述第一预编码矩阵的秩和第一码本索引的值的对应关系由下列表B4或表B5确定:52. The base station according to claim 51 or 52, wherein when the number of bits carrying the joint coding value is 5, the rank sum of the joint coding value and the first precoding matrix is first The correspondence between the values of the codebook index is determined by the following table B4 or table B5: 表B4Table B4 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-150-15 11 IRI/PMI1 I RI/PMI1 16-3116-31 22 IRI/PMI1-16I RI/PMI1-16
表B5Form B5 IRI/PMI1 I RI/PMI1 RIRI i1 i 1 0-70-7 11 2IRI/PMI1 2I RI/PMI1 8-158-15 22 2(IRI/PMI1-8)2 (I RI/PMI1-8 ) 1616 33 00
1717 44 00 18-3118-31 保留reserve null
其中,IRI/PMI1表示联合编码值;RI表示编码矩阵的秩;i1表示第一码本索引。Among them, I RI/PMI1 represents the joint coding value; RI represents the rank of the coding matrix; i 1 represents the first codebook index.
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