WO2019127143A1

WO2019127143A1 - Data precoding method, terminal device and network device

Info

Publication number: WO2019127143A1
Application number: PCT/CN2017/119119
Authority: WO
Inventors: 陈文洪; 史志华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2019-07-04
Also published as: CN109690962A

Abstract

Provided are a data precoding method, a terminal device and a network device, wherein the method comprises: the terminal device determines a first configuration information, wherein, the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration; the terminal device determines the codebook subset used for transmitting uplink data on a target subband and the PMI information carried in the precoding matrix indication PMI information domain according to the first configuration information; the terminal device determines the precoding matrix used for transmitting the uplink data on the target subband in the codebook subset according to the PMI information; and the terminal device pre-codes the uplink data according to the precoding matrix. Therefore, when the coherent transmission configuration or the codebook subset constraint configuration is different, the PMI information in the PMI information domain is also different, so that the overhead of the PMI information can be significantly saved.

Description

数据预编码的方法、终端设备和网络设备Data precoding method, terminal device and network device

技术领域Technical field

本申请实施例涉及无线通信领域，并且更具体地，涉及一种数据预编码的方法、终端设备和网络设备。The embodiments of the present application relate to the field of wireless communications, and in particular, to a data precoding method, a terminal device, and a network device.

背景技术Background technique

在5G***，或称新无线(New Radio，NR)中，终端设备可以支持相干传输(coherence transmission)、部分相干传输或者非相干传输，并分别在相干码字的码本子集、部分相干码字的码本子集和非相干码字的码本子集选择所使用的预编码矩阵。并且终端设备的上行传输支持频率选择性预编码，即不同上行子带上采用不同的预编码矩阵。因此，如何实现不同子带上采用不同的预编码矩阵并节省预编码矩阵指示(Precoding Matrix Indication，PMI)的开销成为亟待解决的问题。In a 5G system, or New Radio (NR), the terminal device can support coherence transmission, partial coherent transmission or non-coherent transmission, and respectively in the codebook subset and partial coherent code of the coherent codeword. The codebook subset of the word and the codebook subset of the non-coherent codeword are selected using the precoding matrix. And the uplink transmission of the terminal device supports frequency selective precoding, that is, different precoding matrices are used on different uplink subbands. Therefore, how to implement different precoding matrices on different subbands and save the overhead of Precoding Matrix Indication (PMI) becomes an urgent problem to be solved.

发明内容Summary of the invention

本申请实施例提供了一种数据预编码的方法、终端设备和网络设备，能够实现不同子带上采用不同的预编码矩阵并节省PMI的开销。The embodiment of the present application provides a data precoding method, a terminal device, and a network device, which can implement different precoding matrices on different subbands and save PMI overhead.

第一方面，提供了一种数据预编码的方法，包括：终端设备确定第一配置信息，所述第一配置信息包括相干传输配置或码本子集约束配置；所述终端设备根据所述第一配置信息，确定在目标子带上传输上行数据所使用的码本子集，以及承载于预编码矩阵指示PMI信息域中的PMI信息；所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵；所述终端设备根据所述预编码矩阵，对所述上行数据进行预编码。The first aspect provides a data precoding method, including: determining, by a terminal device, first configuration information, where the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration; a configuration information, determining a codebook subset used for transmitting uplink data on the target subband, and PMI information carried in the precoding matrix indicating PMI information field; the terminal device according to the PMI information, in the code In the subset, determining a precoding matrix used for transmitting the uplink data on the target subband; and the terminal device precoding the uplink data according to the precoding matrix.

因此，终端设备根据相干传输配置或码本子集约束配置确定待使用的码本子集，并且，相干传输配置或码本子集约束配置不同的情况下，PMI信息域中的PMI信息也不同，因此，在根据该PMI信息在该码本子集中选择待使用的预编码矩阵时，能够大大节省PMI信息的开销。例如，该终端设备仅支持非相干传输时，PMI信息域中的PMI信息仅需要包括一个PMI即宽带PMI即可，节省了比特开销。Therefore, the terminal device determines the codebook subset to be used according to the coherent transmission configuration or the codebook subset constraint configuration, and if the coherent transmission configuration or the codebook subset constraint configuration is different, the PMI information in the PMI information domain is different. Therefore, when the precoding matrix to be used is selected in the codebook subset according to the PMI information, the overhead of the PMI information can be greatly saved. For example, when the terminal device only supports non-coherent transmission, the PMI information in the PMI information domain only needs to include one PMI, that is, a broadband PMI, which saves bit overhead.

在一种可能的实现方式中，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。In a possible implementation manner, the coherent transmission configuration includes at least one of coherent transmission, partial coherent transmission, and non-coherent transmission, where the codebook subset constraint configuration includes a codebook subset of coherent transmission codewords, At least one of a codebook subset of the partially coherent transmission codeword and a codebook subset of the non-coherent transmission codeword.

在一种可能的实现方式中，所述第一配置信息包括相干传输配置，所述终端设备确定第一配置信息，包括：所述终端设备接收网络设备发送的第一指示信息，所述第一指示信息用于指示所述相干传输配置；或者所述终端设备根据所述终端设备的相干传输能力，确定所述相干传输配置，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力。In a possible implementation, the first configuration information includes a coherent transmission configuration, and the terminal device determines the first configuration information, where the terminal device receives the first indication information sent by the network device, where the first The indication information is used to indicate the coherent transmission configuration; or the terminal device determines the coherent transmission configuration according to the coherent transmission capability of the terminal device, where the coherent transmission capability indicates that the terminal device supports coherent transmission and partial coherent transmission Or the ability to transmit non-coherently.

在一种可能的实现方式中，所述第一配置信息包括码本子集约束配置，所述终端设备确定第一配置信息，包括：所述终端设备接收网络设备发送的第二指示信息，所述第二指示信息用于指示所述码本子集约束配置。In a possible implementation manner, the first configuration information includes a codebook subset constraint configuration, and the terminal device determines the first configuration information, where the terminal device receives the second indication information sent by the network device, where The second indication information is used to indicate the codebook subset constraint configuration.

在一种可能的实现方式中，在所述终端设备确定第一配置信息之前，所述方法还包括：所述终端设备向所述网络设备上报所述终端设备的相干传输能力。In a possible implementation manner, before the determining, by the terminal device, the first configuration information, the method further includes: reporting, by the terminal device, the coherent transmission capability of the terminal device to the network device.

在一种可能的实现方式中，不同的码本子集约束配置对应不同的相干传输能力。In a possible implementation manner, different codebook subset constraint configurations correspond to different coherent transmission capabilities.

在一种可能的实现方式中，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。In a possible implementation manner, when the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook subset of non-coherent transmission codewords, the PMI information only includes broadband PMI, wherein the broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.

在一种可能的实现方式中，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：所述终端设备将所述码本子集中由所述宽带PMI指示的码字，确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。In a possible implementation, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, including: The terminal device determines a codeword indicated by the wideband PMI in the codebook subset as the precoding matrix used for transmitting the uplink data on the target subband.

在一种可能的实现方式中，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。In a possible implementation manner, when the coherent transmission configuration includes coherent transmission, or the codebook subset constraint configuration includes a codebook subset of coherent transmission codewords, the PMI information includes occupation with the terminal device. At least one subband corresponding to at least one subband PMI, wherein each subband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding subband.

在一种可能的实现方式中，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；所述终端设备根据所述目标子带PMI，在所述码本子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。In a possible implementation, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, including: Determining, in the at least one sub-band PMI, a target sub-band PMI corresponding to the target sub-band; the terminal device determining the target sub-in the codebook subset according to the target sub-band PMI a codeword with a PMI indication, and determining a codeword indicated by the target subband PMI as the precoding matrix used for transmitting the uplink data on the target subband.

在一种可能的实现方式中，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；所述终端设备根据所述目标子带PMI，在所述码本子集的一个子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。In a possible implementation, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, including: The terminal device determines, in the at least one subband PMI, a target subband PMI corresponding to the target subband; the terminal device is in a subset of the codebook subset according to the target subband PMI, Determining a codeword indicated by the target subband PMI, and determining a codeword indicated by the target subband PMI as the precoding matrix used for transmitting the uplink data on the target subband, where The positions of elements in a subset with a value of 0 are the same.

在一种可能的实现方式中，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。In a possible implementation manner, when the coherent transmission configuration includes partial coherent transmission, or the codebook subset constraint configuration includes a codebook subset of a partially coherent transmission codeword, the PMI information includes the terminal At least one sub-band PMI corresponding to the at least one sub-band occupied by the device, where each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on the corresponding sub-band.

在一种可能的实现方式中，所述PMI信息域中还承载有用于指示所述码本子集中的所述一个子集的指示信息。In a possible implementation manner, the PMI information field further carries indication information for indicating the one subset of the codebook subset.

在一种可能的实现方式中，在与所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。In a possible implementation manner, in at least one subband PMI corresponding to at least one subband occupied by the terminal device, each subband PMI is a codeword indicated by each subband PMI in the codebook. An index of the subset or the subset of the subset of codebooks.

在一种可能的实现方式中，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI，为所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。In a possible implementation manner, the reference subband PMI in the at least one subband PMI corresponding to the at least one subband occupied by the terminal device, the codeword indicated by the reference subband PMI is in the code An index of the subset, in at least one subband PMI corresponding to at least one subband occupied by the terminal device, other subband PMIs other than the reference subband PMI, indicating the other subband PMI The index of the codeword is the difference from the index of the codeword indicated by the reference subband PMI.

在一种可能的实现方式中，所述终端设备根据所述第一配置信息，确定承载于PMI信息域中的PMI信息：所述终端设备根据所述第一配置信息，确定所述PMI信息域的大小；所述终端设备根据所述PMI信息域的大小，确定用于承载所述PMI信息域的下行控制信息DCI的大小。In a possible implementation manner, the terminal device determines, according to the first configuration information, PMI information that is carried in a PMI information domain: the terminal device determines the PMI information domain according to the first configuration information. The size of the downlink control information DCI used to carry the PMI information field is determined by the terminal device according to the size of the PMI information field.

第二方面，提供了一种数据预编码的方法，包括：网络设备接收终端设备上报的所述终端设备的相干传输能力，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力；所述网络设备根据所述相干传输能力，确定所述终端设备在目标子带上传输上行数据所使用的码本子集；所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵；所述网络设备通过承载于预编码矩阵指示PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵。A second aspect provides a data precoding method, including: receiving, by a network device, a coherent transmission capability of the terminal device reported by a terminal device, where the coherent transmission capability indicates that the terminal device supports coherent transmission, partial coherent transmission, or The capability of non-coherent transmission; the network device determines, according to the coherent transmission capability, a codebook subset used by the terminal device to transmit uplink data on a target subband; the network device determines in the codebook subset a precoding matrix used by the terminal device to transmit the uplink data on the target subband; the network device indicates the PMI information in a PMI information field by using a precoding matrix to indicate the Precoding matrix.

因此，网络设备根据终端设备的相干传输能力，确定待使用的码本子集，并且，相干传输配置或码本子集约束配置不同的情况下，网络设备发送的PMI信息域中的PMI信息也不同，因此能够大大节省PMI信息的开销。例如，该终端设备仅支持非相干传输时，PMI信息域中的PMI信息仅需要包括一个PMI即宽带PMI即可，节省了比特开销。Therefore, the network device determines the codebook subset to be used according to the coherent transmission capability of the terminal device, and if the coherent transmission configuration or the codebook subset constraint configuration is different, the PMI information in the PMI information domain sent by the network device is also Different, so the cost of PMI information can be greatly saved. For example, when the terminal device only supports non-coherent transmission, the PMI information in the PMI information domain only needs to include one PMI, that is, a broadband PMI, which saves bit overhead.

在一种可能的实现方式中，所述方法还包括：所述网络设备向所述终端设备发送指示信息，所述指示信息用于指示第一配置信息，所述第一配置信息用于所述终端设备确定所述码本子集，所述第一配置信息包括相干传输配置或码本子集约束配置。In a possible implementation manner, the method further includes: the network device sending, to the terminal device, indication information, where the indication information is used to indicate first configuration information, where the first configuration information is used by the The terminal device determines the codebook subset, and the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration.

在一种可能的实现方式中，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：所述网络设备通过所述宽带PMI，向所述终端设备指示所述预编码矩阵。In a possible implementation, the network device indicates the precoding matrix to the terminal device by using PMI information that is carried in the PMI information domain, including: the network device passes the broadband PMI, The terminal device indicates the precoding matrix.

在一种可能的实现方式中，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：所述网络设备通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。In a possible implementation manner, the network device indicates the precoding matrix to the terminal device by using PMI information that is carried in a PMI information domain, where: the network device corresponds to the target subband The target subband PMI indicates the precoding matrix to the terminal device.

在一种可能的实现方式中，所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：所述网络设备在所述码本子集的一个子集中，确定所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。In a possible implementation, the network device determines, in the codebook subset, a precoding matrix used by the terminal device to transmit the uplink data on the target subband, including: the network device In a subset of the codebook subset, the precoding matrix is determined, wherein elements of the subset having a value of 0 are all the same.

在一种可能的实现方式中，所述PMI信息域还承载有用于指示所述码本子集中的所述一个子集的指示信息。In a possible implementation manner, the PMI information field further carries indication information for indicating the one subset of the codebook subset.

在一种可能的实现方式中，在所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。In a possible implementation, at least one subband occupied by the terminal device corresponds to at least one subband PMI, and each subband PMI is a codeword indicated by each subband PMI in the codebook. An index of the set or the subset of the subset of codebooks.

第三方面，提供了一种终端设备，该终端设备可以执行上述第一方面或第一方面的任意可选的实现方式中的终端设备的操作。具体地，该终端设备可以包括用于执行上述第一方面或第一方面的任意可能的实现方式中的终端设备的操作的模块单元。In a third aspect, a terminal device is provided, which can perform the operations of the terminal device in the above first aspect or any optional implementation manner of the first aspect. In particular, the terminal device may comprise a modular unit for performing the operations of the terminal device in any of the possible implementations of the first aspect or the first aspect described above.

第四方面，提供了一种网络设备，该网络设备可以执行上述第二方面或第二方面的任意可选的实现方式中的网络设备的操作。具体地，该网络设备可以包括用于执行上述第二方面或第二方面的任意可能的实现方式中的网络设备的操作的模块单元。In a fourth aspect, a network device is provided, which can perform the operations of the network device in any of the foregoing optional implementations of the second aspect or the second aspect. In particular, the network device may comprise a modular unit for performing the operations of the network device in any of the possible implementations of the second aspect or the second aspect described above.

第五方面，提供了一种终端设备，该终端设备包括：处理器、收发器和存储器。其中，该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令，该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时，该执行使得该终端设备执行第一方面或第一方面的任意可能的实现方式中的方法，或者该执行使得该终端设备实现第三方面提供的终端设备。In a fifth aspect, a terminal device is provided, the terminal device comprising: a processor, a transceiver, and a memory. The processor, the transceiver, and the memory communicate with each other through an internal connection path. The memory is for storing instructions for executing instructions stored by the memory. When the processor executes the instruction stored by the memory, the executing causes the terminal device to perform the method in the first aspect or any possible implementation manner of the first aspect, or the execution causes the terminal device to implement the terminal provided by the third aspect device.

第六方面，提供了一种网络设备，该网络设备包括：处理器、收发器和存储器。其中，该处理器、收发器和存储器之间通过内部连接通路互相通信。该存储器用于存储指令，该处理器用于执行该存储器存储的指令。当该处理器执行该存储器存储的指令时，该执行使得该网络设备执行第二方面或第二方面的任意可能的实现方式中的方法，或者该执行使得该网络设备实现第四方面提供的网络设备。In a sixth aspect, a network device is provided, the network device comprising: a processor, a transceiver, and a memory. The processor, the transceiver, and the memory communicate with each other through an internal connection path. The memory is for storing instructions for executing instructions stored by the memory. When the processor executes the instruction stored by the memory, the executing causes the network device to perform the method in any of the possible implementations of the second aspect or the second aspect, or the execution causes the network device to implement the network provided by the fourth aspect device.

第七方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有程序，所述程序使得终端设备执行上述第一方面，及其各种实现方式中的任一种数据预编码的方法。A seventh aspect, a computer readable storage medium storing a program, the program causing a terminal device to perform the first aspect described above, and any one of various implementations thereof The method of encoding.

第八方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有程序，所述程序使得网络设备执行上述第二方面，及其各种实现方式中的任一种数据预编码的方法。In an eighth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a program causing a network device to perform the second aspect described above, and any one of various implementations thereof The method of encoding.

第九方面，提供了一种***芯片，该***芯片包括输入接口、输出接口、处理器和存储器，该处理器用于执行该存储器存储的指令，当该指令被执行时，该处理器可以实现前述第一方面或第一方面的任意可能的实现方式中的方法。In a ninth aspect, a system chip is provided, the system chip comprising an input interface, an output interface, a processor, and a memory, the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement the foregoing The method of any of the first aspect or any of the possible implementations of the first aspect.

第十方面，提供了一种***芯片，该***芯片包括输入接口、输出接口、处理器和存储器，该处理器用于执行该存储器存储的指令，当该指令被执行时，该处理器可以实现前述第二方面或第二方面的任意可能的实现方式中的方法。According to a tenth aspect, a system chip is provided, the system chip includes an input interface, an output interface, a processor, and a memory, the processor is configured to execute an instruction stored by the memory, and when the instruction is executed, the processor can implement the foregoing The method of any of the second aspect or any possible implementation of the second aspect.

第十一方面，提供了一种包括指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得该计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。In an eleventh aspect, a computer program product comprising instructions for causing a computer to execute the method of any of the first aspect or the first aspect of the first aspect, when the computer program product is run on a computer.

第十二方面，提供了一种包括指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得该计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。According to a twelfth aspect, there is provided a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method of any of the second aspect or the second aspect of the second aspect.

附图说明DRAWINGS

图1是本申请实施例的一种应用场景的示意性架构图。FIG. 1 is a schematic structural diagram of an application scenario of an embodiment of the present application.

图2是本申请实施例的数据预编码的方法的示意性流程图。FIG. 2 is a schematic flowchart of a method for data precoding according to an embodiment of the present application.

图3是本申请另一实施例的数据预编码的方法的示意性流程图。FIG. 3 is a schematic flowchart of a method for data precoding according to another embodiment of the present application.

图4是本申请实施例的终端设备的示意性框图。FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

图5是本申请实施例的网络设备的示意性框图。FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application.

图6是本申请实施例的通信设备的示意性结构图。FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.

图7是本申请实施例的***芯片的示意性结构图。FIG. 7 is a schematic structural diagram of a system chip according to an embodiment of the present application.

具体实施方式Detailed ways

下面将结合附图，对本申请实施例中的技术方案进行描述。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

应理解，本申请实施例的技术方案可以应用于各种通信***，例如：全球移动通讯(Global System of Mobile Communication，GSM)***、码分多址(Code Division Multiple Access，CDMA)***、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)***、长期演进(Long Term Evolution，LTE)***、LTE频分双工(Frequency Division Duplex，FDD)***、LTE时分双工(Time Division Duplex，TDD)、通用移动通信***(Universal Mobile Telecommunication System，UMTS)、以及未来的5G通信***等。It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code. Wideband Code Division Multiple Access (WCDMA) system, Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) , Universal Mobile Telecommunication System (UMTS), and future 5G communication systems.

本申请结合终端设备描述了各个实施例。终端设备也可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的陆上公用移动通信网(Public Land Mobile Network，PLMN)网络中的终端设备等。The present application describes various embodiments in connection with a terminal device. The terminal device may also refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent. Or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or future evolved land-based public land mobile network (PLMN) networks Terminal equipment, etc.

本申请结合网络设备描述了各个实施例。网络设备可以是用于与终端设备进行通信的设备，例如，可以是GSM***或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA***中的基站(NodeB，NB)，还可以是LTE***中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络侧设备等。The present application describes various embodiments in connection with a network device. The network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, BTS) in the GSM system or CDMA, or may be a base station (NodeB, NB) in the WCDMA system, or may be An evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network side device in a future 5G network or a future evolved PLMN network. Network side devices, etc.

图1是本申请实施例的一个应用场景的示意图。图1中的通信***可以包括网络设备10和终端设备20。网络设备10用于为终端设备20提供通信服务并接入核心网，终端设备20可以通过搜索网络设备10发送的同步信号、广播信号等而接入网络，从而进行与网络的通信。图1中所示出的箭头可以表示通过终端设备20与网络设备10之间的蜂窝链路进行的上/下行传输。FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application. The communication system in FIG. 1 may include a network device 10 and a terminal device 20. The network device 10 is configured to provide communication services for the terminal device 20 and access the core network. The terminal device 20 can access the network by searching for synchronization signals, broadcast signals, and the like transmitted by the network device 10, thereby performing communication with the network. The arrows shown in FIG. 1 may represent uplink/downlink transmissions by a cellular link between the terminal device 20 and the network device 10.

本申请实施例中的网络可以是指公共陆地移动网络(Public Land Mobile Network，PLMN)或者设备对设备(Device to Device，D2D)网络或者机器对机器/人(Machine to Machine/Man，M2M)网络或者其他网络，图1只是举例的简化示意图，网络中还可以包括其他终端设备，图1中未予以画出。The network in the embodiment of the present application may refer to a Public Land Mobile Network (PLMN) or a Device to Device (D2D) network or a Machine to Machine/Man (M2M) network. Or other networks, FIG. 1 is only a simplified schematic diagram of an example, and other terminal devices may also be included in the network, which are not shown in FIG.

图2是本申请实施例的数据预编码的方法的示意性流程图。图2所示的方法可以由终端设备执行，该终端设备例如可以为图1中所示的终端设备20。如图2所示，该数据预编码的方法包括：FIG. 2 is a schematic flowchart of a method for data precoding according to an embodiment of the present application. The method shown in FIG. 2 can be performed by a terminal device, which can be, for example, the terminal device 20 shown in FIG. 1. As shown in FIG. 2, the data precoding method includes:

在210中，终端设备确定第一配置信息，该第一配置信息包括相干传输配置或码本子集约束配置。In 210, the terminal device determines first configuration information, the first configuration information including a coherent transmission configuration or a codebook subset constraint configuration.

可选地，该相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种。Optionally, the coherent transmission configuration comprises at least one of coherent transmission, partially coherent transmission, and non-coherent transmission.

可选地，该码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。Optionally, the codebook subset constraint configuration comprises at least one of a codebook subset of coherent transmission codewords, a codebook subset of partially coherent transmission codewords, and a codebook subset of non-coherent transmission codewords.

可选地，该第一配置信息包括相干传输配置时，在210中，该终端设备确定第一配置信息，包括：该终端设备接收网络设备发送的第一指示信息，该第一指示信息用于指示该相干传输配置；或者，该终端设备根据该终端设备的相干传输能力，确定该相干传输配置。Optionally, when the first configuration information includes the coherent transmission configuration, the terminal device determines the first configuration information, where the terminal device receives the first indication information sent by the network device, where the first indication information is used. Instructing the coherent transmission configuration; or, the terminal device determines the coherent transmission configuration according to the coherent transmission capability of the terminal device.

其中，该相干传输能力表示该终端设备支持相干传输、部分相干传输或非相干传输的能力。The coherent transmission capability indicates the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission.

具体地，终端设备可以根据自己的相干传输能力确定相干传输配置；或者，网络设备可以根据终端设备上报的相干传输能力，为终端设备确定相干传输配置，并发送给终端设备。如果终端设备具有相干传输的能力，那么该相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种；如果终端设备具有部分相干传输的能力，那么该相干传输配置包括部分相干传输和非相干传输中的至少一种；如果终端设备具有非相干传输的能力，那么该相干传输配置包括非相干传输。终端设备获取该相干传输配置之后，可以基于该相干传输配置选择合适的码本子集。Specifically, the terminal device may determine the coherent transmission configuration according to the coherent transmission capability of the terminal device; or the network device may determine the coherent transmission configuration for the terminal device according to the coherent transmission capability reported by the terminal device, and send the configuration to the terminal device. If the terminal device has the capability of coherent transmission, the coherent transmission configuration includes at least one of coherent transmission, partial coherent transmission, and non-coherent transmission; if the terminal device has the capability of partial coherent transmission, the coherent transmission configuration includes partial coherent transmission And at least one of non-coherent transmissions; if the terminal device has the capability of non-coherent transmission, the coherent transmission configuration includes non-coherent transmission. After the terminal device acquires the coherent transmission configuration, an appropriate codebook subset can be selected based on the coherent transmission configuration.

可选地，该第一配置信息包括码本子集约束配置时，在210中，该终端设备确定第一配置信息，包括：该终端设备接收网络设备发送的第二指示信息，该第二指示信息用于指示该码本子集约束配置。Optionally, when the first configuration information includes a codebook subset constraint configuration, in 210, the terminal device determines the first configuration information, where the terminal device receives the second indication information sent by the network device, where the second indication is Information is used to indicate the codebook subset constraint configuration.

可选地，在210之前，即在该终端设备确定第一配置信息之前，该方法还包括：该终端设备向该网络设备上报该终端设备的相干传输能力。Optionally, before 210, that is, before the terminal device determines the first configuration information, the method further includes: the terminal device reporting the coherent transmission capability of the terminal device to the network device.

其中，不同的码本子集约束信息对应于不同的相干传输能力。The different codebook subset constraint information corresponds to different coherent transmission capabilities.

也就是说，不同的码本子集约束配置是基于该终端设备上报的不同的相干传输能力确定的。That is to say, different codebook subset constraint configurations are determined based on different coherent transmission capabilities reported by the terminal device.

例如，该终端设备可以根据自己的相干传输能力，确定该码本子集约束配置；或者网络设备可以根据终端设备上报的相干传输能力，为终端设备选择与相应的相干传输能力对应的码本子集或者与更低相干传输能力对应的码本子集作为码本子集约束配置，并发送给终端设备。For example, the terminal device may determine the codebook subset constraint configuration according to its own coherent transmission capability; or the network device may select a codebook corresponding to the corresponding coherent transmission capability for the terminal device according to the coherent transmission capability reported by the terminal device. The set or codebook subset corresponding to the lower coherent transmission capability is configured as a codebook subset constraint and transmitted to the terminal device.

如果终端设备具有相干传输的能力，那么该码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种；如果终端设备具有部分相干传输的能力，那么该码本子集约束配置包括部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种；如果终端设备具有非相干传输的能力，那么该码本子集约束配置包括非相干传输码字的码本子集。终端设备获取该码本子集约束配置之后，就知道了待使用的码本子集。If the terminal device has the capability of coherent transmission, the codebook subset constraint configuration includes at least a codebook subset of the coherent transmission codeword, a codebook subset of the partially coherent transmission codeword, and at least a subset of the codebook subset of the non-coherent transmission codeword One; if the terminal device has the capability of partial coherent transmission, the codebook subset constraint configuration includes at least one of a codebook subset of the partially coherent transmission codeword and a codebook subset of the non-coherent transmission codeword; if the terminal device With the ability to transmit non-coherently, then the codebook subset constraint configuration includes a codebook subset of non-coherent transmission codewords. After the terminal device acquires the codebook subset constraint configuration, it knows the codebook subset to be used.

在220中，该终端设备根据该第一配置信息，确定在目标子带上传输上行数据所使用的码本子集，以及承载于预编码矩阵指示(Precoding Matrix Indication，PMI)信息域中的PMI信息。In 220, the terminal device determines, according to the first configuration information, a codebook subset used for transmitting uplink data on a target subband, and a PMI carried in a Precoding Matrix Indication (PMI) information field. information.

其中，该目标子带可以为终端设备占用的至少一个子带中的任意一个子带。该终端设备占用的该至少一个子带中每个子带的大小可以由网络设备配置并告知给终端设备，或者也可以预存在终端设备中例如事先与网络设备约定该子带大小。或者，网络设备调度终端设备进行数据传输的不同调度带宽与不同子带大小之间存在映射关系，终端设备可以根据配置的调度带宽，确定对应的该目标子带的大小。The target sub-band may be any one of at least one sub-band occupied by the terminal device. The size of each of the at least one subband occupied by the terminal device may be configured by the network device and notified to the terminal device, or may be pre-stored in the terminal device, for example, in advance with the network device. Alternatively, the network device schedules the terminal device to perform a data mapping between the different scheduling bandwidths and the different sub-band sizes. The terminal device can determine the size of the target sub-band according to the configured scheduling bandwidth.

具体地，该终端设备可以根据码本子集约束配置获知待使用的码本子集。或者，该终端设备可以根据相干传输配置确定待使用的码本子集，其中，相干传输配置为相干传输时，可以选择相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种；相干传输配置为部分相干传输时，可以选择部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种，相干传输配置为非相干传输时，仅能选择非相干传输码字的码本子集。Specifically, the terminal device can learn the codebook subset to be used according to the codebook subset constraint configuration. Alternatively, the terminal device may determine a codebook subset to be used according to the coherent transmission configuration, wherein when the coherent transmission is configured as a coherent transmission, the codebook subset of the coherent transmission codeword and the codebook of the partially coherent transmission codeword may be selected. At least one of a subset of codebooks of the set and non-coherent transmission codewords; when the coherent transmission is configured for partial coherent transmission, at least one of a codebook subset of the partially coherent transmission codeword and a codebook subset of the non-coherent transmission codeword may be selected When the coherent transmission is configured for non-coherent transmission, only the codebook subset of the non-coherent transmission codeword can be selected.

可选地，在220中，该终端设备根据该第一配置信息，确定承载于PMI信息域中的PMI信息，包括：该终端设备根据该第一配置信息，确定该PMI信息域的大小；该终端设备根据该PMI信息域的大小，确定用于承载该PMI信息域的下行控制信息DCI的大小。Optionally, the terminal device determines, according to the first configuration information, PMI information that is carried in the PMI information domain, where the terminal device determines, according to the first configuration information, a size of the PMI information domain; The terminal device determines the size of the downlink control information DCI for carrying the PMI information field according to the size of the PMI information field.

具体地，该终端设备可以根据PMI信息域中的PMI信息的内容对应的比特数，来确定PMI信息域的大小，从而确定承载该PMI信息域的下行控制信息(Download Control Information，DCI)的大小。终端设备确定了该DCI的大小之后，可以根据该DCI大小进行DCI的盲检，从而获得DCI中携带的该PMI信息域中的信息。Specifically, the terminal device may determine the size of the PMI information field according to the number of bits corresponding to the content of the PMI information in the PMI information field, and determine the size of the downlink control information (DCI) that carries the PMI information field. . After the terminal device determines the size of the DCI, the blind detection of the DCI may be performed according to the DCI size, thereby obtaining information in the PMI information domain carried in the DCI.

在230中，该终端设备根据PMI信息域中的该PMI信息，在该码本子集中，确定在该目标子带上传输该上行数据所使用的预编码矩阵。In 230, the terminal device determines, according to the PMI information in the PMI information field, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset.

具体地，该终端设备根据第一配置信息，即相干传输配置或码本子集约束配置，可以确定待使用的码本子集。一般来说，该终端设备还会接收到网络设备发送的PMI，从而根据该PMI从该码本子集中选择合适的预编码方式用来在该目标子带上传输数据。该PMI承载于PMI信息域中，本申请实时中的PMI信息域与传统的PMI信息域的不同之处在于，传统的PMI信息域中只包括一个该PMI，由于本申请实施例针对不同子带，即不同子带上可以使用不同的预编码矩阵对待传输数据进行预编码，因此，该PMI信息域中不仅可以包括一个PMI，还可以包括多个PMI用以分别对应于不同的子带，这里将与每个子带对应的PMI称为子带PMI。该PMI信息域中包括一个PMI还是多个PMI，具体取决于该终端设备的相干传输能力，或者说是与该第一配置信息的内容相关。Specifically, the terminal device may determine the codebook subset to be used according to the first configuration information, that is, the coherent transmission configuration or the codebook subset constraint configuration. Generally, the terminal device also receives the PMI sent by the network device, so as to select an appropriate precoding mode from the codebook subset according to the PMI to transmit data on the target subband. The PMI is carried in the PMI information domain. The PMI information field in the real-time of the present application is different from the traditional PMI information domain in that the PMI information domain only includes one PMI, since the embodiment of the present application is directed to different sub-bands. That is, different precoding matrices may be used to precode the transmitted data on different subbands. Therefore, the PMI information field may include not only one PMI but also multiple PMIs for respectively corresponding to different subbands, where The PMI corresponding to each sub-band is referred to as a sub-band PMI. Whether the PMI information field includes one PMI or multiple PMIs depends on the coherent transmission capability of the terminal device or is related to the content of the first configuration information.

该终端设备具体可以通过以下三种方式中的任一种方式，确定由于在该目标子带上传输该上行数据所使用的预编码矩阵，下面分别描述。Specifically, the terminal device may determine, according to any one of the following three manners, a precoding matrix used for transmitting the uplink data on the target subband, which is separately described below.

方式1Mode 1

可选地，该相干传输配置仅包括非相干传输，或者该码本子集约束配置仅包括非相干传输码字的码本子集时，该PMI信息仅包括宽带PMI。Optionally, when the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook subset of the non-coherent transmission codeword, the PMI information includes only the wideband PMI.

其中，该宽带PMI用于指示该终端设备在整个传输带宽上传输该上行数据所使用的预编码矩阵。The broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.

可选地，在230中，该终端设备根据该PMI信息，在该码本子集中，确定在该目标子带上传输该上行数据所使用的预编码矩阵，包括：该终端设备将该码本子集中由该宽带PMI指示的码字，确定为在该目标子带上传输该上行数据所使用的该预编码矩阵。Optionally, in 230, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, where the terminal device includes the codebook subset The codeword indicated by the wideband PMI is determined to be the precoding matrix used for transmitting the uplink data on the target subband.

其中，可选地，该宽带PMI可以指示终端设备确定的该码本子集中的任意一个码字。Optionally, the broadband PMI may indicate any one of the codeword subsets in the codebook subset determined by the terminal device.

具体地，如果该终端设备仅支持非相干传输，只能使用非相干传输码字的码本子集，那么PMI信息域中承载的PMI信息中只需要包括一个宽带PMI即可。由于此时该PMI信息仅包括宽带PMI，因此该宽带PMI应用于该终端设备占用的整个传输带宽。即无论该终端设备在哪部分带宽上传输数据，均根据该码本子集中由该宽带PMI指示的码本来选择预编码矩阵，并使用该预编码矩阵对该数据进行预编码。Specifically, if the terminal device only supports non-coherent transmission, only the codebook subset of the non-coherent transmission codeword can be used, and only one broadband PMI needs to be included in the PMI information carried in the PMI information domain. Since the PMI information only includes the wideband PMI at this time, the broadband PMI is applied to the entire transmission bandwidth occupied by the terminal device. That is, regardless of which part of the bandwidth the terminal device transmits data, the precoding matrix is selected according to the codebook indicated by the wideband PMI in the codebook subset, and the data is precoded using the precoding matrix.

在一个非相干传输码字中，不同的数据流是从不同的天线端口上传输的，一个数据流只能从一个天线端口上传输，所以对应码字的每一列只有一个非零元素，例如：In a non-coherent transmission codeword, different data streams are transmitted from different antenna ports, and one data stream can only be transmitted from one antenna port, so each column of the corresponding codeword has only one non-zero element, for example:

方式2Mode 2

可选地，该相干传输配置包括相干传输，或者该码本子集约束配置包括相干传输码字的码本子集时，该PMI信息包括与该终端设备占用的至少一个子带分别对应的至少一个子带PMI。Optionally, the coherent transmission configuration includes a coherent transmission, or the codebook subset constraint configuration includes a codebook subset of the coherent transmission codeword, where the PMI information includes at least one corresponding to at least one subband occupied by the terminal device. One sub-band PMI.

其中，每个子带PMI用于指示该终端设备在对应子带上传输该上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on the corresponding sub-band.

可选地，在230中，该终端设备根据该PMI信息，在该码本子集中，确定在该目标子带上传输该上行数据所使用的预编码矩阵，包括：该终端设备在该至少一个子带PMI中，确定与该目标子带对应的目标子带PMI；该终端设备根据该目标子带PMI，在该码本子集中确定该目标子带PMI指示的码字，并将该目标子带PMI指示的码字确定为在该目标子带上传输该上行数据所使用的该预编码矩阵。Optionally, in 230, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, where: the terminal device is in the at least one sub In the PMI, determining a target subband PMI corresponding to the target subband; the terminal device determines, according to the target subband PMI, a codeword indicated by the target subband PMI in the codebook subset, and the target subband PMI The indicated codeword is determined to be the precoding matrix used to transmit the upstream data on the target subband.

或者，可选地，在230中，该终端设备根据该PMI信息，在该码本子集中，确定在该目标子带上传输该上行数据所使用的预编码矩阵，包括：该终端设备根据该目标子带PMI，在该码本子集的一个子集中确定该目标子带PMI指示的码字，并将该目标子带PMI指示的码字确定为在该目标子带上传输该上行数据所使用的该预编码矩阵。Or, optionally, in 230, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, including: the terminal device according to the target Subband PMI, determining a codeword indicated by the target subband PMI in a subset of the codebook subset, and determining a codeword indicated by the target subband PMI as being used to transmit the uplink data on the target subband The precoding matrix.

其中，在该码本子集的该一个子集中，取值为0的元素的位置均相同。Wherein, in the subset of the codebook subset, the positions of the elements having the value of 0 are the same.

其中，可选地，每个子带PMI可以指示终端设备确定的该码本子集中的任意一个码字，或者指示该码本子集的一个子集中的一个码字，该一个子集中取值为0的元素的位置均相同。Optionally, each sub-band PMI may indicate any one of the codeword subsets in the codebook subset determined by the terminal device, or indicate a codeword in a subset of the codebook subset, where the value of the subset is 0. The elements are all in the same position.

可选地，该PMI信息域中还承载有用于指示该码本子集中的该一个子集的指示信息。终端设备根据接收到的该PMI信息域中的该指示信息，可以知道该码本子集中的子集中的码字。Optionally, the PMI information field further carries indication information for indicating the one subset of the codebook subset. The terminal device can know the codeword in the subset of the codebook subset according to the received indication information in the PMI information field.

具体地，如果该终端设备可以支持相干传输，使用的码本子集中包括相干传输码字，那么PMI信息域中承载的PMI信息需要包括与该终端设备占用的至少一个子带分别对应的至少一个子带PMI。该至少一个子带与至少一个子带PMI一一对应，该至少一个子带PMI中的每个子带PMI分别指示该终端设备在该子带PMI对应的子带上传输数据所使用的预编码矩阵。Specifically, if the terminal device can support coherent transmission, and the used codebook subset includes a coherent transmission codeword, the PMI information carried in the PMI information domain needs to include at least one sub-port corresponding to at least one subband occupied by the terminal device. With PMI. The at least one sub-band is in one-to-one correspondence with the at least one sub-band PMI, and each sub-band PMI in the at least one sub-band PMI respectively indicates a precoding matrix used by the terminal device to transmit data on the sub-band corresponding to the sub-band PMI .

终端设备可以在该至少一个子带PMI中，首先确定与该目标子带对应的目标子带PMI。并根据该目标子带PMI，在该码本子集中确定该目标子带PMI指示的码字，从而在该目标子带上传输数据所使用的预编码矩阵即为该目标子带PMI指示的码字。或者，终端设备也可以根据该目标子带PMI，在该码本子集的一个子集中确定该目标子带PMI指示的码字，该子集的所***字中取值为0的元素位置均相同，所有子带上传输数据所使用的预编码矩阵均可以从该子集中获取。The terminal device may first determine a target sub-band PMI corresponding to the target sub-band in the at least one sub-band PMI. And determining, according to the target subband PMI, the codeword indicated by the target subband PMI in the codebook subset, so that the precoding matrix used for transmitting data on the target subband is the codeword indicated by the target subband PMI. . Alternatively, the terminal device may determine, according to the target subband PMI, a codeword indicated by the target subband PMI in a subset of the codebook subset, where all the codewords in the subset have a value of 0 Similarly, the precoding matrices used to transmit data on all subbands can be obtained from this subset.

在一个相干传输的码字中，一个数据流可以同时在所有天线端口上传输，所以对应码字中没有取值为0的元素，每一列都是非零元素。In a coherently transmitted codeword, one data stream can be transmitted on all antenna ports simultaneously, so there is no element with a value of 0 in the corresponding codeword, and each column is a non-zero element.

方式3Mode 3

可选地，该相干传输配置包括部分相干传输，或者该码本子集约束配置包括部分相干传输码字的码本子集时，该PMI信息包括与该终端设备占用的至少一个子带分别对应的至少一个子带PMI。Optionally, the coherent transmission configuration includes a partial coherent transmission, or the codebook subset constraint configuration includes a codebook subset of the partially coherent transmission codeword, where the PMI information includes corresponding to at least one subband occupied by the terminal device. At least one sub-band PMI.

或者，可选地，在230中，该终端设备根据该PMI信息，在该码本子集中，确定在该目标子带上传输该上行数据所使用的预编码矩阵，包括：该终端设备在该至少一个子带PMI中，确定与该目标子带对应的目标子带PMI；该终端设备根据该目标子带PMI，在该码本子集的一个子集中确定该目标子带PMI指示的码字，并将该目标子带PMI指示的码字确定为在该目标子带上传输该上行数据所使用的该预编码矩阵。Or, optionally, in 230, the terminal device determines, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset, where: the terminal device is at least Determining, in a subband PMI, a target subband PMI corresponding to the target subband; the terminal device determines, according to the target subband PMI, a codeword indicated by the target subband PMI in a subset of the codebook subset, And determining, by the target subband, the codeword indicated by the PMI as the precoding matrix used for transmitting the uplink data on the target subband.

其中，在该码本子集的该子集中，取值为0的元素的位置均相同。Wherein, in the subset of the codebook subset, the positions of the elements having the value of 0 are the same.

可选地，每个子带PMI可以指示终端设备确定的该码本子集中的任意一个码字，或者指示该码本子集的一个子集中的一个码字，该一个子集中取值为0的元素的位置均相同。Optionally, each sub-band PMI may indicate any one of the codeword subsets in the codebook subset determined by the terminal device, or one codeword in a subset of the codebook subset, the subset of the subset having a value of 0 The location is the same.

可选地，该PMI信息域中还承载有用于指示该码本子集中的该一个子集的指示信息。终端设备根据接收道的该PMI信息域中的该指示信息，可以知道该码本子集中的子集中的码字。Optionally, the PMI information field further carries indication information for indicating the one subset of the codebook subset. The terminal device can know the codeword in the subset of the codebook subset according to the indication information in the PMI information field of the receiving channel.

具体地，如果该终端设备可以支持部分相干传输，使用的码本子集中包括部分相干传输码字，那么PMI信息域中承载的PMI信息需要包括与该终端设备占用的至少一个子带分别对应的至少一个子带PMI。该至少一个子带与至少一个子带PMI一一对应，该至少一个子带PMI中的每个子带PMI分别指示该终端设备在该子带PMI对应的子带上传输数据所使用的预编码矩阵。Specifically, if the terminal device can support partial coherent transmission, and the used codebook subset includes a partially coherent transmission codeword, the PMI information carried in the PMI information domain needs to include at least one corresponding to at least one subband occupied by the terminal device. One sub-band PMI. The at least one sub-band is in one-to-one correspondence with the at least one sub-band PMI, and each sub-band PMI in the at least one sub-band PMI respectively indicates a precoding matrix used by the terminal device to transmit data on the sub-band corresponding to the sub-band PMI .

在一个部分相干传输的码字中，一个数据流可以同时在所有天线端口上传输，所以对应码字的至少一列有多个0元素和多个非零元素，例如：In a partially coherently transmitted codeword, one data stream can be transmitted on all antenna ports simultaneously, so at least one column of the corresponding codeword has multiple 0 elements and multiple non-zero elements, for example:

在方式2和方式3中，通过PMI信息中的至少一个子带PMI指示预编码矩阵，具体可以通过以下两种方式进行指示：In the mode 2 and the mode 3, the precoding matrix is indicated by at least one subband PMI in the PMI information, and the indication may be indicated in the following two manners:

(1)独立指示(1) Independent instructions

在与该终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为该每个子带PMI指示的码字在该码本子集或该码本子集的该一个子集中的索引。In at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device, each sub-band PMI is a codeword indicated by the sub-band PMI in the codebook subset or the one sub-set of the codebook subset Centralized index.

其中，每个子带PMI都可以采用N比特来表示，N为正整数。Each sub-band PMI can be represented by N bits, and N is a positive integer.

例如中，PMI信息中的目标子带PMI，就为目标子带PMI指示的码字在该码本子集中的索引，或者为该目标子带PMI指示的码字在该码本子集的该子集中的索引。For example, the target sub-band PMI in the PMI information is an index of the codeword indicated by the target sub-band PMI in the codebook subset, or the codeword indicated by the target sub-band PMI is in the sub-set of the codebook subset. Centralized index.

(2)差分指示(2) Differential indication

与该终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为该参考子带PMI指示的码字在该码本子集中的索引。并且，在与该终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除该参考子带PMI之外的其他子带PMI，为该其他子带PMI指示的码字的索引，与该参考子带PMI指示的码字的索引之间的差。The reference subband PMI in the at least one subband PMI corresponding to the at least one subband occupied by the terminal device is an index of the codeword indicated by the reference subband PMI in the codebook subset. And, in the at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, the sub-band PMI except the reference sub-band PMI is an index of the codeword indicated by the other sub-band PMI, The difference between the index of the codeword indicated by the reference subband PMI.

例如，参考子带PMI为参考子带PMI指示的码字在该码本子集中的索引，假设参考子带PMI为索引K1，如果其他子带PMI中的某个子带PMI指示的码字在码本子集中的索引为K2，那么该子带PMI即为K1-K2。For example, the reference subband PMI is an index of a codeword indicated by the reference subband PMI in the codebook subset, assuming that the reference subband PMI is an index K1, and if a subband of the other subband PMI indicates a codeword in the codebook The centralized index is K2, then the sub-band PMI is K1-K2.

采用这种方式进行预编码矩阵的指示，由于其他子带PMI的比特开销可以少于参考子带PMI的比特开销，从而节省了DCI信令开销。In this way, the indication of the precoding matrix is performed, since the bit overhead of other subband PMIs can be less than the bit overhead of the reference subband PMI, thereby saving DCI signaling overhead.

在240中，该终端设备根据该预编码矩阵，对该上行数据进行预编码。In 240, the terminal device pre-codes the uplink data according to the precoding matrix.

在上述方式1中，承载于PMI信息域中的PMI信息仅包括宽带PMI，因此该终端设备在各子带上采用相同的预编码矩阵对待传输的数据进行预编码。在上述方式2和方式3中，终端设备在各子带上采用各子带对应的子带PMI指示的码字作为预编码矩阵。In the above manner 1, the PMI information carried in the PMI information field includes only the wideband PMI, and therefore the terminal device precodes the data to be transmitted using the same precoding matrix on each subband. In the above manners 2 and 3, the terminal device uses the codeword indicated by the subband PMI corresponding to each subband as a precoding matrix on each subband.

可以看出，本申请实施例中，终端设备根据相干传输配置或码本子集约束配置确定待使用的码本子集，并且，相干传输配置或码本子集约束配置不同的情况下，PMI信息域中的PMI信息也不同，因此，在根据该PMI信息在该码本子集中选择待使用的预编码矩阵时，能够大大节省PMI信息的开销。例如，该终端设备仅支持非相干传输时，PMI信息域中的PMI信息仅需要包括一个PMI即宽带PMI即可，节省了比特开销。It can be seen that, in this embodiment of the present application, the terminal device determines the codebook subset to be used according to the coherent transmission configuration or the codebook subset constraint configuration, and if the coherent transmission configuration or the codebook subset constraint configuration is different, the PMI The PMI information in the information domain is also different. Therefore, when the precoding matrix to be used is selected in the codebook subset according to the PMI information, the overhead of the PMI information can be greatly saved. For example, when the terminal device only supports non-coherent transmission, the PMI information in the PMI information domain only needs to include one PMI, that is, a broadband PMI, which saves bit overhead.

图3是本申请实施例的数据预编码的方法的示意性流程图。图3所示的方法可以由网络设备执行，该网络设备例如可以为图1中所示的网络设备10。如图3所示，该数据预编码的方法包括：FIG. 3 is a schematic flowchart of a method for data precoding according to an embodiment of the present application. The method illustrated in FIG. 3 may be performed by a network device, such as network device 10 shown in FIG. As shown in FIG. 3, the data precoding method includes:

在310中，网络设备接收终端设备上报的所述终端设备的相干传输能力，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力。In 310, the network device receives the coherent transmission capability of the terminal device reported by the terminal device, where the coherent transmission capability indicates the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission.

在320中，所述网络设备根据所述相干传输能力，确定所述终端设备在目标子带上传输上行数据所使用的码本子集。In 320, the network device determines, according to the coherent transmission capability, a codebook subset used by the terminal device to transmit uplink data on a target subband.

在330中，所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵。In 330, the network device determines, in the codebook subset, a precoding matrix used by the terminal device to transmit the uplink data on the target subband.

在340中，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵。In 340, the network device indicates the precoding matrix to the terminal device by using PMI information carried in a PMI information domain.

可选地，所述方法还包括：所述网络设备向所述终端设备发送指示信息，所述指示信息用于指示第一配置信息，所述第一配置信息用于所述终端设备确定所述码本子集，所述第一配置信息包括相干传输配置或码本子集约束配置。Optionally, the method further includes: the network device sending, to the terminal device, indication information, where the indication information is used to indicate first configuration information, where the first configuration information is used by the terminal device to determine the The codebook subset, the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration.

可选地，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。Optionally, the coherent transmission configuration includes at least one of coherent transmission, partial coherent transmission, and non-coherent transmission, the codebook subset constraint configuration including a codebook subset of coherent transmission codewords, and a partially coherent transmission codeword At least one of a codebook subset and a codebook subset of non-coherent transmission codewords.

可选地，不同的码本子集约束配置是基于所述终端设备上报的不同的相干传输能力确定的。Optionally, different codebook subset constraint configurations are determined based on different coherent transmission capabilities reported by the terminal device.

在340中，网络设备可以通过以下三种方式向终端设备指示在所述目标子带上传输所述上行数据所使用的预编码矩阵。具体是通过向终端设备发送承载于PMI信息域中的PMI信息进行指示。其中PMI信息可以包括宽带PMI或者包括至少一个子带PMI。下面具体描述这三种方式。In 340, the network device can indicate to the terminal device the precoding matrix used for transmitting the uplink data on the target subband in the following three manners. Specifically, the indication is performed by sending PMI information carried in the PMI information domain to the terminal device. The PMI information may include a wideband PMI or include at least one subband PMI. The three methods are specifically described below.

方式1Mode 1

可选地，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。Optionally, when the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook subset of non-coherent transmission codewords, the PMI information only includes a broadband PMI, where The wideband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.

可选地，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：所述网络设备通过所述宽带PMI，向所述终端设备指示所述预编码矩阵。Optionally, the network device indicates the precoding matrix to the terminal device by using the PMI information in the PMI information domain, where the network device indicates, by using the broadband PMI, the terminal device Precoding matrix.

方式2Mode 2

可选地，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Optionally, when the coherent transmission configuration includes coherent transmission, or the codebook subset constraint configuration includes a codebook subset of coherent transmission codewords, the PMI information includes at least one subband occupied by the terminal device Corresponding at least one sub-band PMI, wherein each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.

可选地，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：所述网络设备通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。Optionally, the network device indicates the precoding matrix to the terminal device by using PMI information that is carried in the PMI information domain, where the network device passes the target subband PMI corresponding to the target subband. And indicating the precoding matrix to the terminal device.

方式3Mode 3

可选地，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Optionally, when the coherent transmission configuration includes partial coherent transmission, or the codebook subset constraint configuration includes a codebook subset of a partially coherent transmission codeword, the PMI information includes at least one occupied by the terminal device. The sub-bands respectively correspond to at least one sub-band PMI, wherein each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.

可选地，所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：所述网络设备在所述码本子集的一个子集中，确定所述预编码矩阵其中，所述一个子集中取值为0的元素的位置均相同。Optionally, the network device determines, in the codebook subset, a precoding matrix used by the terminal device to transmit the uplink data on the target subband, where: the network device is in the codebook In a subset of the subset, the precoding matrix is determined, wherein the positions of the elements in the subset having a value of 0 are the same.

可选地，所述PMI信息域还承载有用于指示所述码本子集中的所述一个子集的指示信息。Optionally, the PMI information field further carries indication information for indicating the one subset of the codebook subset.

可选地，与所述终端设备占用的至少一个子带分别对应至少一个子带PMI中的每个子带PMI，为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。Optionally, at least one subband occupied by the terminal device respectively corresponds to each subband PMI in the at least one subband PMI, and the codeword indicated by the subband PMI is in the codebook subset or the An index into the subset of the codebook subset.

可选地，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI，为所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。Optionally, the reference subband PMI in the at least one subband PMI corresponding to the at least one subband occupied by the terminal device is an index of the codeword indicated by the reference subband PMI in the codebook subset. And at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, other sub-band PMIs other than the reference sub-band PMI, an index of codewords indicated by the other sub-band PMI The difference between the index of the codeword indicated by the reference subband PMI.

应理解，网络设备进行预编码指示的过程的具体细节，可以参考前述图2中对终端设备的相关描述，为了简洁，这里不再赘述。It should be understood that the specific description of the process of the pre-coding indication by the network device may be referred to the related description of the terminal device in FIG. 2, and details are not described herein for brevity.

还应理解，在本申请的各种实施例中，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，而不应对本申请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 application, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application. The implementation of the examples constitutes any limitation.

上文中详细描述了根据本申请实施例的载波选取的方法，下面将结合图4至图7，描述根据本申请实施例的装置，方法实施例所描述的技术特征适用于以下装置实施例。The method for carrier selection according to the embodiment of the present application is described in detail above. The device according to the embodiment of the present application will be described below with reference to FIG. 4 to FIG. 7. The technical features described in the method embodiment are applicable to the following device embodiments.

图4是根据本申请实施例的终端设备400的示意性框图。如图4所示，该终端设备400包括确定单元410和预编码单元420。FIG. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes a determining unit 410 and a pre-encoding unit 420.

确定单元410用于：确定第一配置信息，所述第一配置信息包括相干传输配置或码本子集约束配置；根据所述第一配置信息，确定在目标子带上传输上行数据所使用的码本子集，以及承载于预编码矩阵指示PMI信息域中的PMI信息；根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵；The determining unit 410 is configured to: determine first configuration information, where the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration; and determine, according to the first configuration information, used to transmit uplink data on the target subband a codebook subset, and PMI information carried in the precoding matrix indicating PMI information field; determining, according to the PMI information, a preamble used to transmit the uplink data on the target subband in the codebook subset Coding matrix

预编码单元420用于：根据所述确定单元410确定的所述预编码矩阵，对所述上行数据进行预编码。The precoding unit 420 is configured to: perform precoding on the uplink data according to the precoding matrix determined by the determining unit 410.

可选地，所述终端设备还包括接收单元，所述确定单元410具体用于：通过所述接收单元接收网络设备发送的第一指示信息，所述第一指示信息用于指示所述相干传输配置；或者根据所述终端设备的相干传输能力，确定所述相干传输配置，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力。Optionally, the terminal device further includes a receiving unit, where the determining unit 410 is configured to: receive, by the receiving unit, first indication information that is sent by the network device, where the first indication information is used to indicate the coherent transmission. Or determining, according to the coherent transmission capability of the terminal device, the coherent transmission configuration, the coherent transmission capability indicating the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission.

可选地，所述终端设备还包括接收单元，所述确定单元410具体用于：通过所述接收单元接收网络设备发送的第二指示信息，所述第二指示信息用于指示所述码本子集约束配置。Optionally, the terminal device further includes a receiving unit, where the determining unit 410 is configured to: receive, by the receiving unit, second indication information that is sent by the network device, where the second indication information is used to indicate the codebook. Subset constraint configuration.

可选地，所述终端设备还包括发送单元，所述发送单元用于：向所述网络设备上报所述终端设备的相干传输能力。Optionally, the terminal device further includes a sending unit, where the sending unit is configured to report the coherent transmission capability of the terminal device to the network device.

可选地，不同的码本子集约束配置对应不同的相干传输能力。Optionally, different codebook subset constraint configurations correspond to different coherent transmission capabilities.

可选地，所述确定单元410具体用于：将所述码本子集中由所述宽带PMI指示的码字，确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Optionally, the determining unit 410 is specifically configured to: determine, by using the codeword indicated by the broadband PMI in the codebook subset, the precoding used to transmit the uplink data on the target subband. matrix.

可选地，所述确定单元410具体用于：在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；根据所述目标子带PMI，在所述码本子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Optionally, the determining unit 410 is specifically configured to: determine, in the at least one subband PMI, a target subband PMI corresponding to the target subband; according to the target subband PMI, in the codebook Determining the codeword indicated by the target subband PMI, and determining the codeword indicated by the target subband PMI as the precoding matrix used for transmitting the uplink data on the target subband.

可选地，所述确定单元410具体用于：在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；根据所述目标子带PMI，在所述码本子集的一个子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Optionally, the determining unit 410 is specifically configured to: determine, in the at least one subband PMI, a target subband PMI corresponding to the target subband; according to the target subband PMI, in the codebook Determining, in a subset of the subset, a codeword indicated by the target subband PMI, and determining a codeword indicated by the target subband PMI as the preamble used to transmit the uplink data on the target subband An encoding matrix in which elements of the subset having a value of 0 have the same position.

可选地，所述PMI信息域中还承载有用于指示所述码本子集中的所述一个子集的指示信息。Optionally, the PMI information field further carries indication information for indicating the one subset of the codebook subset.

可选地，在与所述终端设备占用的至少一个子带分别对应至少一个子带 PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。Optionally, in the at least one subband PMI corresponding to the at least one subband occupied by the terminal device, each subband PMI is a codeword indicated by the subband PMI in the codebook subset or the An index into the subset of the codebook subset.

可选地，所述确定单元410具体用于：根据所述第一配置信息，确定所述PMI信息域的大小；根据所述PMI信息域的大小，确定用于承载所述PMI信息域的下行控制信息DCI的大小。Optionally, the determining unit 410 is specifically configured to: determine, according to the first configuration information, a size of the PMI information domain; and determine, according to a size of the PMI information domain, a downlink used to carry the PMI information domain. Controls the size of the information DCI.

应理解，该终端设备400可以执行上述方法实施例中的终端设备执行的方法200的相应操作，为了简洁，在此不再赘述。It should be understood that the terminal device 400 can perform the corresponding operations of the method 200 performed by the terminal device in the foregoing method embodiment, and details are not described herein for brevity.

图5是根据本申请实施例的网络设备500的示意性框图。如图5所示，该网络设备500包括接收单元510、确定单元520和指示单元530。其中：FIG. 5 is a schematic block diagram of a network device 500 in accordance with an embodiment of the present application. As shown in FIG. 5, the network device 500 includes a receiving unit 510, a determining unit 520, and an indicating unit 530. among them:

接收单元510用于：接收终端设备上报的所述终端设备的相干传输能力，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力；The receiving unit 510 is configured to: receive a coherent transmission capability of the terminal device reported by the terminal device, where the coherent transmission capability indicates the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission;

确定单元520用于：根据所述接收单元接收的所述相干传输能力，确定所述终端设备在目标子带上传输上行数据所使用的码本子集；在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵；The determining unit 520 is configured to: determine, according to the coherent transmission capability received by the receiving unit, a codebook subset used by the terminal device to transmit uplink data on a target subband; and in the codebook subset, determine the a precoding matrix used by the terminal device to transmit the uplink data on the target subband;

指示单元530用于：通过承载于预编码矩阵指示PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵。The indicating unit 530 is configured to: indicate the precoding matrix to the terminal device by using PMI information in a PMI information field that is carried in a precoding matrix.

可选地，所述网络设备还包括发送单元，所述发送单元用于：向所述终端设备发送指示信息，所述指示信息用于指示第一配置信息，所述第一配置信息用于所述终端设备确定所述码本子集，所述第一配置信息包括相干传输配置或码本子集约束配置。Optionally, the network device further includes: a sending unit, where the sending unit is configured to: send the indication information to the terminal device, where the indication information is used to indicate the first configuration information, where the first configuration information is used by the The terminal device determines the codebook subset, and the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration.

可选地，所述指示单元530具体用于：通过所述宽带PMI，向所述终端设备指示所述预编码矩阵。Optionally, the indicating unit 530 is specifically configured to: indicate, by using the broadband PMI, the precoding matrix to the terminal device.

可选地，所述指示单元530具体用于：通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。Optionally, the indicating unit 530 is specifically configured to: indicate the precoding matrix to the terminal device by using a target subband PMI corresponding to the target subband.

可选地，所述确定单元520还用于：在所述码本子集的一个子集中，确定所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Optionally, the determining unit 520 is further configured to: determine, in a subset of the codebook subset, the precoding matrix, where the positions of the elements in the subset that have a value of 0 are all the same.

可选地，在所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。Optionally, at least one subband occupied by the terminal device corresponds to at least one subband PMI, and each subband PMI is a codeword indicated by each subband PMI in the codebook subset or the code. The index of the subset in this subset.

应理解，该网络设备500可以执行上述方法实施例中的网络设备执行的方法300的相应操作，为了简洁，在此不再赘述。It should be understood that the network device 500 can perform the corresponding operations of the method 300 performed by the network device in the foregoing method embodiment. For brevity, no further details are provided herein.

图6是根据本申请实施例的通信设备600的示意性结构图。如图6所示，该通信设备包括处理器610、收发器620和存储器630，其中，该处理器610、收发器620和存储器630之间通过内部连接通路互相通信。该存储器630用于存储指令，该处理器610用于执行该存储器630存储的指令，以控制该收发器620接收信号或发送信号。FIG. 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG. 6, the communication device includes a processor 610, a transceiver 620, and a memory 630, wherein the processor 610, the transceiver 620, and the memory 630 communicate with each other through an internal connection path. The memory 630 is configured to store instructions for executing the instructions stored by the memory 630 to control the transceiver 620 to receive signals or transmit signals.

可选地，该处理器610可以调用存储器630中存储的程序代码，执行方法实施例中的终端设备执行的方法200的相应操作，为了简洁，在此不再赘述。Optionally, the processor 610 can call the program code stored in the memory 630 to perform the corresponding operations of the method 200 performed by the terminal device in the method embodiment. For brevity, details are not described herein again.

可选地，该处理器610可以调用存储器630中存储的程序代码，执行方法实施例中的网络设备执行的方法300的相应操作，为了简洁，在此不再赘述。Optionally, the processor 610 can call the program code stored in the memory 630 to perform the corresponding operations of the method 300 performed by the network device in the method embodiment. For brevity, details are not described herein again.

应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例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。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，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。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。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。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码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。It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to perform the steps of the above method.

可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的***和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It is to be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

图7是本申请实施例的***芯片的一个示意性结构图。图7的***芯片700包括输入接口701、输出接口702、至少一个处理器703、存储器704，所述输入接口701、输出接口702、所述处理器703以及存储器704之间通过内部连接通路互相连接。所述处理器703用于执行所述存储器704中的代码。FIG. 7 is a schematic structural diagram of a system chip according to an embodiment of the present application. The system chip 700 of FIG. 7 includes an input interface 701, an output interface 702, at least one processor 703, and a memory 704. The input interface 701, the output interface 702, the processor 703, and the memory 704 are interconnected by an internal connection path. . The processor 703 is configured to execute code in the memory 704.

可选地，当所述代码被执行时，所述处理器703可以实现方法实施例中由终端设备执行的方法200。为了简洁，这里不再赘述。Alternatively, when the code is executed, the processor 703 can implement the method 200 performed by the terminal device in the method embodiment. For the sake of brevity, it will not be repeated here.

可选地，当所述代码被执行时，所述处理器703可以实现方法实施例中由网络设备执行的方法300。为了简洁，这里不再赘述。Alternatively, when the code is executed, the processor 703 can implement the method 300 performed by the network device in the method embodiment. For the sake of brevity, it will not be repeated here.

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、或者计算机软件和电子硬件的结合来实现。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申请的范围。Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、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。A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

在本申请所提供的几个实施例中，应该理解到，所揭露的***、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，该单元的划分，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***，或一些特征可以忽略，或不执行。另一点，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，可以是电性，机械或其它的形式。In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

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实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

另外，在本申请各个实施例中的各功能单元可以集成在一个监测单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one monitoring unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

所述功能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，本申请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)执行本申请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(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

以上所述，仅为本申请的具体实施方式，但本申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

一种数据预编码的方法，其特征在于，所述方法包括：A data precoding method, the method comprising:

终端设备确定第一配置信息，所述第一配置信息包括相干传输配置或码本子集约束配置；The terminal device determines first configuration information, where the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration;

所述终端设备根据所述第一配置信息，确定在目标子带上传输上行数据所使用的码本子集，以及承载于预编码矩阵指示PMI信息域中的PMI信息；Determining, according to the first configuration information, the codebook subset used for transmitting uplink data on the target subband, and the PMI information carried in the precoding matrix indication PMI information domain;

所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵；Determining, by the terminal device, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information;

所述终端设备根据所述预编码矩阵，对所述上行数据进行预编码。The terminal device pre-codes the uplink data according to the precoding matrix.
根据权利要求1所述的方法，其特征在于，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。The method of claim 1 wherein said coherent transmission configuration comprises at least one of coherent transmission, partially coherent transmission, and non-coherent transmission, said codebook subset constraint configuration comprising a code of a coherent transmission codeword At least one of the subset of codebook subsets of the subset, the partially coherent transmission codeword, and the codebook subset of the non-coherent transmission codeword.
根据权利要求1或2所述的方法，其特征在于，所述第一配置信息包括相干传输配置，所述终端设备确定第一配置信息，包括：The method according to claim 1 or 2, wherein the first configuration information comprises a coherent transmission configuration, and the determining, by the terminal device, the first configuration information comprises:

所述终端设备接收网络设备发送的第一指示信息，所述第一指示信息用于指示所述相干传输配置；或者Receiving, by the terminal device, first indication information sent by the network device, where the first indication information is used to indicate the coherent transmission configuration; or

所述终端设备根据所述终端设备的相干传输能力，确定所述相干传输配置，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力。The terminal device determines the coherent transmission configuration according to the coherent transmission capability of the terminal device, where the coherent transmission capability indicates the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission.
根据权利要求1或2所述的方法，其特征在于，所述第一配置信息包括码本子集约束配置，所述终端设备确定第一配置信息，包括：The method according to claim 1 or 2, wherein the first configuration information comprises a codebook subset constraint configuration, and the terminal device determines the first configuration information, including:

所述终端设备接收网络设备发送的第二指示信息，所述第二指示信息用于指示所述码本子集约束配置。The terminal device receives the second indication information sent by the network device, where the second indication information is used to indicate the codebook subset constraint configuration.
根据权利要求3或4所述的方法，其特征在于，在所述终端设备确定第一配置信息之前，所述方法还包括：The method according to claim 3 or 4, wherein before the determining, by the terminal device, the first configuration information, the method further comprises:

所述终端设备向所述网络设备上报所述终端设备的相干传输能力。The terminal device reports the coherent transmission capability of the terminal device to the network device.
根据权利要求5所述的方法，其特征在于，不同的码本子集约束配置对应不同的相干传输能力。The method of claim 5 wherein the different codebook subset constraint configurations correspond to different coherent transmission capabilities.
根据权利要求1至6中任一项所述的方法，其特征在于，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，The method according to any one of claims 1 to 6, wherein the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook of a non-coherent transmission codeword At the time of collection, the PMI information only includes the broadband PMI.

其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。The broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.
根据权利要求7所述的方法，其特征在于，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to claim 7, wherein the terminal device determines, in the codebook subset, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information. include:

所述终端设备将所述码本子集中由所述宽带PMI指示的码字，确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。The terminal device determines, by the codeword indicated by the broadband PMI in the codebook subset, the precoding matrix used for transmitting the uplink data on the target subband.
根据权利要求1至6中任一项所述的方法，其特征在于，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The method according to any one of claims 1 to 6, wherein the coherent transmission configuration comprises coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of coherent transmission codewords, The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求9所述的方法，其特征在于，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to claim 9, wherein the terminal device determines, in the codebook subset, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information. include:

所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；The terminal device determines, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

所述终端设备根据所述目标子带PMI，在所述码本子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Determining, by the terminal device, a codeword indicated by the target subband PMI in the codebook subset according to the target subband PMI, and determining, by the target subband PMI, a codeword as being in the target subband The precoding matrix used for transmitting the uplink data.
根据权利要求9所述的方法，其特征在于，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to claim 9, wherein the terminal device determines, in the codebook subset, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information. include:

所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；The terminal device determines, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

所述终端设备根据所述目标子带PMI，在所述码本子集的一个子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Determining, by the terminal device, a codeword indicated by the target subband PMI in a subset of the codebook subset according to the target subband PMI, and determining, by the target subband PMI, a codeword as And the precoding matrix used for transmitting the uplink data on the target subband, wherein the positions of the elements having the value of 0 in the one subset are the same.
根据权利要求1至6中任一项所述的方法，其特征在于，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The method according to any one of claims 1 to 6, wherein the coherent transmission configuration comprises a partial coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of a partially coherent transmission codeword The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求12所述的方法，其特征在于，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to claim 12, wherein the terminal device determines, in the codebook subset, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information. include:

所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；The terminal device determines, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

所述终端设备根据所述目标子带PMI，在所述码本子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Determining, by the terminal device, a codeword indicated by the target subband PMI in the codebook subset according to the target subband PMI, and determining, by the target subband PMI, a codeword as being in the target subband The precoding matrix used for transmitting the uplink data.
根据权利要求12所述的方法，其特征在于，所述终端设备根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to claim 12, wherein the terminal device determines, in the codebook subset, a precoding matrix used for transmitting the uplink data on the target subband according to the PMI information. include:

所述终端设备在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；The terminal device determines, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

所述终端设备根据所述目标子带PMI，在所述码本子集的一个子集中确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Determining, by the terminal device, a codeword indicated by the target subband PMI in a subset of the codebook subset according to the target subband PMI, and determining, by the target subband PMI, a codeword as And the precoding matrix used for transmitting the uplink data on the target subband, wherein the positions of the elements having the value of 0 in the one subset are the same.
根据权利要求11或14所述的方法，其特征在于，所述PMI信息域中还承载有用于指示所述码本子集中的所述一个子集的指示信息。The method according to claim 11 or 14, wherein the PMI information field further carries indication information for indicating the one subset of the codebook subset.
根据权利要求9至15中任一项所述的方法，其特征在于，在与所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。The method according to any one of claims 9 to 15, wherein at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device, each sub-band PMI is each of the sub-bands An index of the codeword indicated by the PMI in the subset of codebooks or the subset of the subset of codebooks.
根据权利要求9至15中任一项所述的方法，其特征在于，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带 PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，The method according to any one of claims 9 to 15, wherein a reference sub-band PMI in at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device is the reference sub- An index of a codeword with a PMI indication in the subset of codebooks,

在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI为：所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。In the at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, the sub-band PMI except the reference sub-band PMI is: an index of the codeword indicated by the other sub-band PMI The difference between the index of the codeword indicated by the reference subband PMI.
根据权利要求1至17中任一项所述的方法，其特征在于，所述终端设备根据所述第一配置信息，确定承载于PMI信息域中的PMI信息：The method according to any one of claims 1 to 17, wherein the terminal device determines the PMI information carried in the PMI information domain according to the first configuration information:

所述终端设备根据所述第一配置信息，确定所述PMI信息域的大小；Determining, by the terminal device, a size of the PMI information field according to the first configuration information;

所述终端设备根据所述PMI信息域的大小，确定用于承载所述PMI信息域的下行控制信息DCI的大小。The terminal device determines, according to the size of the PMI information field, a size of downlink control information DCI for carrying the PMI information domain.
一种数据预编码的方法，其特征在于，所述方法包括：A data precoding method, the method comprising:

网络设备接收终端设备上报的所述终端设备的相干传输能力，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力；The network device receives the coherent transmission capability of the terminal device reported by the terminal device, where the coherent transmission capability indicates the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission;

所述网络设备根据所述相干传输能力，确定所述终端设备在目标子带上传输上行数据所使用的码本子集；Determining, by the network device, a codebook subset used by the terminal device to transmit uplink data on a target subband according to the coherent transmission capability;

所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵；Determining, by the network device, the precoding matrix used by the terminal device to transmit the uplink data on the target subband in the codebook subset;

所述网络设备通过承载于预编码矩阵指示PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵。The network device indicates the precoding matrix to the terminal device by using PMI information in a PMI information field that is carried in a precoding matrix.
根据权利要求19所述的方法，其特征在于，所述方法还包括：The method of claim 19, wherein the method further comprises:

所述网络设备向所述终端设备发送指示信息，所述指示信息用于指示第一配置信息，所述第一配置信息用于所述终端设备确定所述码本子集，所述第一配置信息包括相干传输配置或码本子集约束配置。The network device sends the indication information to the terminal device, where the indication information is used to indicate the first configuration information, where the first configuration information is used by the terminal device to determine the codebook subset, the first configuration The information includes a coherent transmission configuration or a codebook subset constraint configuration.
根据权利要求20所述的方法，其特征在于，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。The method of claim 20, wherein the coherent transmission configuration comprises at least one of coherent transmission, partial coherent transmission, and non-coherent transmission, the codebook subset constraint configuration comprising a code of a coherent transmission codeword At least one of the subset of codebook subsets of the subset, the partially coherent transmission codeword, and the codebook subset of the non-coherent transmission codeword.
根据权利要求19至21中任一项所述的方法，其特征在于，不同的码本子集约束配置对应不同的相干传输能力。The method according to any one of claims 19 to 21, wherein the different codebook subset constraint configurations correspond to different coherent transmission capabilities.
根据权利要求19至22中任一项所述的方法，其特征在于，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，The method according to any one of claims 19 to 22, wherein the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook of a non-coherent transmission codeword At the time of collection, the PMI information only includes the broadband PMI.

其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。The broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.
根据权利要求23所述的方法，其特征在于，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：The method according to claim 23, wherein the network device indicates the precoding matrix to the terminal device by using PMI information carried in a PMI information domain, including:

所述网络设备通过所述宽带PMI，向所述终端设备指示所述预编码矩阵。The network device indicates the precoding matrix to the terminal device through the broadband PMI.
根据权利要求19至22中任一项所述的方法，其特征在于，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The method according to any one of claims 19 to 22, wherein the coherent transmission configuration comprises coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of coherent transmission codewords, The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求25所述的方法，其特征在于，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：The method according to claim 25, wherein the network device indicates the precoding matrix to the terminal device by using PMI information carried in a PMI information domain, including:

所述网络设备通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。The network device indicates the precoding matrix to the terminal device by using a target subband PMI corresponding to the target subband.
根据权利要求19至22中任一项所述的方法，其特征在于，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The method according to any one of claims 19 to 22, wherein the coherent transmission configuration comprises a partial coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of a partially coherent transmission codeword The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求27所述的方法，其特征在于，所述网络设备通过承载于PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵，包括：The method according to claim 27, wherein the network device indicates the precoding matrix to the terminal device by using PMI information carried in a PMI information domain, including:

所述网络设备通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。The network device indicates the precoding matrix to the terminal device by using a target subband PMI corresponding to the target subband.
根据权利要求19至28中任一项所述的方法，其特征在于，所述网络设备在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵，包括：The method according to any one of claims 19 to 28, wherein the network device determines, in the codebook subset, the use of the uplink data by the terminal device on the target subband Precoding matrix, including:

所述网络设备在所述码本子集的一个子集中，确定所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。The network device determines the precoding matrix in a subset of the codebook subset, wherein the positions of the elements having the value 0 in the subset are the same.
根据权利要求29所述的方法，其特征在于，所述PMI信息域还承载有用于指示所述码本子集中的所述一个子集的指示信息。The method of claim 29, wherein the PMI information field further carries indication information for indicating the one subset of the codebook subset.
根据权利要求25至30中任一项所述的方法，其特征在于，在与所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。The method according to any one of claims 25 to 30, wherein each subband PMI is each of the subbands in at least one subband PMI corresponding to at least one subband occupied by the terminal device An index of the codeword indicated by the PMI in the subset of codebooks or the subset of the subset of codebooks.
根据权利要求25至30中任一项所述的方法，其特征在于，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，The method according to any one of claims 25 to 30, wherein a reference sub-band PMI in at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device is the reference sub- An index of a codeword with a PMI indication in the subset of codebooks,

在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI为：所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。In the at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, the sub-band PMI except the reference sub-band PMI is: an index of the codeword indicated by the other sub-band PMI The difference between the index of the codeword indicated by the reference subband PMI.
一种终端设备，其特征在于，所述终端设备包括：A terminal device, the terminal device includes:

确定单元，用于确定第一配置信息，所述第一配置信息包括相干传输配置或码本子集约束配置；a determining unit, configured to determine first configuration information, where the first configuration information includes a coherent transmission configuration or a codebook subset constraint configuration;

所述确定单元还用于，根据所述第一配置信息，确定在目标子带上传输上行数据所使用的码本子集，以及承载于预编码矩阵指示PMI信息域中的PMI信息；The determining unit is further configured to: determine, according to the first configuration information, a codebook subset used for transmitting uplink data on a target subband, and PMI information carried in a precoding matrix indication PMI information domain;

所述确定单元还用于，根据所述PMI信息，在所述码本子集中，确定在所述目标子带上传输所述上行数据所使用的预编码矩阵；The determining unit is further configured to determine, according to the PMI information, a precoding matrix used for transmitting the uplink data on the target subband in the codebook subset;

预编码单元，用于根据所述确定单元确定的所述预编码矩阵，对所述上行数据进行预编码。And a precoding unit, configured to precode the uplink data according to the precoding matrix determined by the determining unit.
根据权利要求33所述的终端设备，其特征在于，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。The terminal device according to claim 33, wherein said coherent transmission configuration comprises at least one of coherent transmission, partial coherent transmission, and non-coherent transmission, said codebook subset constraint configuration comprising coherent transmission codewords At least one of a codebook subset, a codebook subset of a partially coherent transmission codeword, and a codebook subset of a non-coherent transmission codeword.
根据权利要求33或34所述的终端设备，其特征在于，所述终端设备还包括接收单元，所述确定单元具体用于：The terminal device according to claim 33 or 34, wherein the terminal device further comprises a receiving unit, and the determining unit is specifically configured to:

通过所述接收单元接收网络设备发送的第一指示信息，所述第一指示信息用于指示所述相干传输配置；或者Receiving, by the receiving unit, first indication information sent by the network device, where the first indication information is used to indicate the coherent transmission configuration; or

根据所述终端设备的相干传输能力，确定所述相干传输配置，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力。Determining the coherent transmission configuration according to the coherent transmission capability of the terminal device, the coherent transmission capability indicating the capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission.
根据权利要求33或34所述的终端设备，其特征在于，所述终端设备还包括接收单元，所述确定单元具体用于：The terminal device according to claim 33 or 34, wherein the terminal device further comprises a receiving unit, and the determining unit is specifically configured to:

通过所述接收单元接收网络设备发送的第二指示信息，所述第二指示信息用于指示所述码本子集约束配置。And receiving, by the receiving unit, second indication information that is sent by the network device, where the second indication information is used to indicate the codebook subset constraint configuration.
根据权利要求35或36所述的终端设备，其特征在于，所述终端设备还包括发送单元，所述发送单元用于：The terminal device according to claim 35 or claim 36, wherein the terminal device further comprises a sending unit, wherein the sending unit is configured to:

向所述网络设备上报所述终端设备的相干传输能力。Reporting, to the network device, a coherent transmission capability of the terminal device.
根据权利要求37所述的终端设备，其特征在于，不同的码本子集约束配置对应不同的相干传输能力。The terminal device according to claim 37, wherein different codebook subset constraint configurations correspond to different coherent transmission capabilities.
根据权利要求33至38中任一项所述的终端设备，其特征在于，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，The terminal device according to any one of claims 33 to 38, wherein the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook of a non-coherent transmission codeword In the subset, the PMI information only includes the broadband PMI,

其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。The broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.
根据权利要求39所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to claim 39, wherein the determining unit is specifically configured to:

将所述码本子集中由所述宽带PMI指示的码字，确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Decoding the codeword indicated by the wideband PMI in the codebook subset as the precoding matrix used for transmitting the uplink data on the target subband.
根据权利要求33至38中任一项所述的终端设备，其特征在于，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The terminal device according to any one of claims 33 to 38, wherein the coherent transmission configuration comprises coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of coherent transmission codewords, The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求41所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to claim 41, wherein the determining unit is specifically configured to:

在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；Determining, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

根据所述目标子带PMI，在所述码本子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Determining, according to the target subband PMI, a codeword indicated by the target subband PMI in the codebook subset, and determining, by the target subband PMI, a codeword to be transmitted on the target subband The precoding matrix used by the uplink data.
根据权利要求41所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to claim 41, wherein the determining unit is specifically configured to:

在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；Determining, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

根据所述目标子带PMI，在所述码本子集的一个子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Determining, according to the target subband PMI, a codeword indicated by the target subband PMI in a subset of the codebook subset, and determining a codeword indicated by the target subband PMI as being at the target The precoding matrix used by the uplink data to transmit the uplink data, wherein the positions of the elements having the value of 0 in the one subset are the same.
根据权利要求33至38中任一项所述的终端设备，其特征在于，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The terminal device according to any one of claims 33 to 38, wherein the coherent transmission configuration comprises partial coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of a partially coherent transmission codeword The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求44所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to claim 44, wherein the determining unit is specifically configured to:

在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；Determining, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

根据所述目标子带PMI，在所述码本子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵。Determining, according to the target subband PMI, a codeword indicated by the target subband PMI in the codebook subset, and determining, by the target subband PMI, a codeword to be transmitted on the target subband The precoding matrix used by the uplink data.
根据权利要求44所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to claim 44, wherein the determining unit is specifically configured to:

在所述至少一个子带PMI中，确定与所述目标子带对应的目标子带PMI；Determining, in the at least one subband PMI, a target subband PMI corresponding to the target subband;

根据所述目标子带PMI，在所述码本子集的一个子集中，确定所述目标子带PMI指示的码字，并将所述目标子带PMI指示的码字确定为在所述目标子带上传输所述上行数据所使用的所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。Determining, according to the target subband PMI, a codeword indicated by the target subband PMI in a subset of the codebook subset, and determining a codeword indicated by the target subband PMI as being at the target The precoding matrix used by the uplink data to transmit the uplink data, wherein the positions of the elements having the value of 0 in the one subset are the same.
根据权利要求43或46所述的终端设备，其特征在于，所述PMI信息域中还承载有用于指示所述码本子集中的所述一个子集的指示信息。The terminal device according to claim 43 or 46, wherein the PMI information field further carries indication information for indicating the one subset of the codebook subset.
根据权利要求41至47中任一项所述的终端设备，其特征在于，在与所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。The terminal device according to any one of claims 41 to 47, wherein each sub-band PMI is each of the sub-bands corresponding to at least one sub-band occupied by the terminal device An index of a codeword with a PMI indication in the subset of codebooks or the subset of the subset of codebooks.
根据权利要求41至47中任一项所述的终端设备，其特征在于，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，The terminal device according to any one of claims 41 to 47, wherein a reference sub-band PMI in at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device is the reference The index of the codeword indicated by the subband PMI in the subset of the codebook,

在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI为：所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。In the at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, the sub-band PMI except the reference sub-band PMI is: an index of the codeword indicated by the other sub-band PMI The difference between the index of the codeword indicated by the reference subband PMI.
根据权利要求33至49中任一项所述的终端设备，其特征在于，所述确定单元具体用于：The terminal device according to any one of claims 33 to 49, wherein the determining unit is specifically configured to:

根据所述第一配置信息，确定所述PMI信息域的大小；Determining, according to the first configuration information, a size of the PMI information domain;

根据所述PMI信息域的大小，确定用于承载所述PMI信息域的下行控制信息DCI的大小。And determining, according to the size of the PMI information field, a size of downlink control information DCI used to carry the PMI information domain.
一种网络设备，其特征在于，所述网络设备包括：A network device, where the network device includes:

接收单元，用于接收终端设备上报的所述终端设备的相干传输能力，所述相干传输能力表示所述终端设备支持相干传输、部分相干传输或非相干传输的能力；a receiving unit, configured to receive a coherent transmission capability of the terminal device reported by the terminal device, where the coherent transmission capability indicates a capability of the terminal device to support coherent transmission, partial coherent transmission or non-coherent transmission;

确定单元，用于根据所述接收单元接收的所述相干传输能力，确定所述终端设备在目标子带上传输上行数据所使用的码本子集；a determining unit, configured to determine, according to the coherent transmission capability received by the receiving unit, a codebook subset used by the terminal device to transmit uplink data on a target subband;

所述确定单元还用于，在所述码本子集中，确定所述终端设备在所述目标子带上传输所述上行数据所使用的预编码矩阵；The determining unit is further configured to: in the codebook subset, determine a precoding matrix used by the terminal device to transmit the uplink data on the target subband;

指示单元，用于通过承载于预编码矩阵指示PMI信息域中的PMI信息，向所述终端设备指示所述预编码矩阵。And an indicating unit, configured to indicate the precoding matrix to the terminal device by using PMI information carried in the PMI information field by the precoding matrix.
根据权利要求51所述的网络设备，其特征在于，所述网络设备还包括发送单元，所述发送单元用于：The network device according to claim 51, wherein the network device further comprises a sending unit, wherein the sending unit is configured to:

向所述终端设备发送指示信息，所述指示信息用于指示第一配置信息，所述第一配置信息用于所述终端设备确定所述码本子集，所述第一配置信息包括相干传输配置或码本子集约束配置。Sending indication information to the terminal device, where the indication information is used to indicate first configuration information, where the first configuration information is used by the terminal device to determine the codebook subset, and the first configuration information includes coherent transmission Configuration or codebook subset constraint configuration.
根据权利要求52所述的网络设备，其特征在于，所述相干传输配置包括相干传输、部分相干传输和非相干传输中的至少一种，所述码本子集约束配置包括相干传输码字的码本子集、部分相干传输码字的码本子集和非相干传输码字的码本子集中的至少一种。The network device of claim 52, wherein the coherent transmission configuration comprises at least one of coherent transmission, partial coherent transmission, and non-coherent transmission, the codebook subset constraint configuration comprising coherent transmission codewords At least one of a codebook subset, a codebook subset of a partially coherent transmission codeword, and a codebook subset of a non-coherent transmission codeword.
根据权利要求51至53中任一项所述的网络设备，其特征在于，不同的码本子集约束配置对应不同的相干传输能力。The network device according to any one of claims 51 to 53, wherein the different codebook subset constraint configurations correspond to different coherent transmission capabilities.
根据权利要求51至54中任一项所述的网络设备，其特征在于，所述相干传输配置仅包括非相干传输，或者所述码本子集约束配置仅包括非相干传输码字的码本子集时，所述PMI信息仅包括宽带PMI，The network device according to any one of claims 51 to 54, wherein the coherent transmission configuration includes only non-coherent transmission, or the codebook subset constraint configuration includes only a codebook of a non-coherent transmission codeword In the subset, the PMI information only includes the broadband PMI,

其中，所述宽带PMI用于指示所述终端设备在整个传输带宽上传输所述上行数据所使用的预编码矩阵。The broadband PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data over the entire transmission bandwidth.
根据权利要求55所述的网络设备，其特征在于，所述指示单元具体用于：The network device according to claim 55, wherein the indication unit is specifically configured to:

通过所述宽带PMI，向所述终端设备指示所述预编码矩阵。The precoding matrix is indicated to the terminal device by the broadband PMI.
根据权利要求51至54中任一项所述的网络设备，其特征在于，所述相干传输配置包括相干传输，或者所述码本子集约束配置包括相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The network device according to any one of claims 51 to 54, wherein the coherent transmission configuration comprises coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of coherent transmission codewords, The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求57所述的网络设备，其特征在于，所述指示单元具体用于：The network device according to claim 57, wherein the indication unit is specifically configured to:

通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。The precoding matrix is indicated to the terminal device by a target subband PMI corresponding to the target subband.
根据权利要求51至54中任一项所述的网络设备，其特征在于，所述相干传输配置包括部分相干传输，或者所述码本子集约束配置包括部分相干传输码字的码本子集时，所述PMI信息包括与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI，The network device according to any one of claims 51 to 54, wherein the coherent transmission configuration comprises a partial coherent transmission, or the codebook subset constraint configuration comprises a codebook subset of a partially coherent transmission codeword The PMI information includes at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device,

其中，每个子带PMI用于指示所述终端设备在对应子带上传输所述上行数据所使用的预编码矩阵。Each sub-band PMI is used to indicate a precoding matrix used by the terminal device to transmit the uplink data on a corresponding sub-band.
根据权利要求59所述的网络设备，其特征在于，所述指示单元具体用于：The network device according to claim 59, wherein the indication unit is specifically configured to:

通过与所述目标子带对应的目标子带PMI，向所述终端设备指示所述预编码矩阵。The precoding matrix is indicated to the terminal device by a target subband PMI corresponding to the target subband.
根据权利要求51至60中任一项所述的网络设备，其特征在于，所述确定单元还用于：The network device according to any one of claims 51 to 60, wherein the determining unit is further configured to:

在所述码本子集的一个子集中，确定所述预编码矩阵，其中，所述一个子集中取值为0的元素的位置均相同。In a subset of the codebook subset, the precoding matrix is determined, wherein elements of the subset having a value of 0 are all the same.
根据权利要求61所述的网络设备，其特征在于，所述PMI信息域还承载有用于指示所述码本子集中的所述一个子集的指示信息。The network device according to claim 61, wherein the PMI information field further carries indication information for indicating the one subset of the codebook subset.
根据权利要求57至62中任一项所述的网络设备，其特征在于，在所述终端设备占用的至少一个子带分别对应至少一个子带PMI中，每个子带PMI为所述每个子带PMI指示的码字在所述码本子集或所述码本子集的所述一个子集中的索引。The network device according to any one of claims 57 to 62, wherein at least one subband occupied by the terminal device corresponds to at least one subband PMI, and each subband PMI is each of the subbands. An index of the codeword indicated by the PMI in the subset of codebooks or the subset of the subset of codebooks.
根据权利要求57至62中任一项所述的网络设备，其特征在于，与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中的参考子带PMI，为所述参考子带PMI指示的码字在所述码本子集中的索引，The network device according to any one of claims 57 to 62, wherein a reference sub-band PMI in at least one sub-band PMI corresponding to at least one sub-band occupied by the terminal device is the reference The index of the codeword indicated by the subband PMI in the subset of the codebook,

在与所述终端设备占用的至少一个子带分别对应的至少一个子带PMI中，除所述参考子带PMI之外的其他子带PMI为：所述其他子带PMI指示的码字的索引，与所述参考子带PMI指示的码字的索引之间的差。In the at least one sub-band PMI corresponding to the at least one sub-band occupied by the terminal device, the sub-band PMI except the reference sub-band PMI is: an index of the codeword indicated by the other sub-band PMI The difference between the index of the codeword indicated by the reference subband PMI.