WO2024093867A1 - 一种预编码的指示方法及通信装置 - Google Patents

一种预编码的指示方法及通信装置 Download PDF

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Publication number
WO2024093867A1
WO2024093867A1 PCT/CN2023/127545 CN2023127545W WO2024093867A1 WO 2024093867 A1 WO2024093867 A1 WO 2024093867A1 CN 2023127545 W CN2023127545 W CN 2023127545W WO 2024093867 A1 WO2024093867 A1 WO 2024093867A1
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WIPO (PCT)
Prior art keywords
phase coefficient
phase
information
antenna port
transmitting antenna
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PCT/CN2023/127545
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English (en)
French (fr)
Inventor
徐军
金黄平
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华为技术有限公司
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Publication of WO2024093867A1 publication Critical patent/WO2024093867A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting

Definitions

  • the present application relates to the field of wireless communication technology, and more specifically, to a precoding indication method and a communication device.
  • the fifth generation (5G) mobile communication system has higher requirements for system capacity and spectrum efficiency.
  • massive multiple-input multiple-output (massive-MIMO) technology plays a vital role in improving the spectrum efficiency of the system.
  • massive-MIMO technology if the transmitter can obtain certain information about the channel (a prerequisite for precoding), it can use this information to preprocess the transmitted signal to improve the system's transmission rate and link reliability.
  • the maximum number of transmit antenna ports supported by the terminal device is 4.
  • the number of transmit antenna ports supported by the terminal device will increase, possibly reaching 8.
  • the uplink codebook predefined in the existing protocol is obviously not adaptable, which limits the performance of uplink transmission.
  • the design of the downlink Type I single-panel (SP) codebook in Section 5.2.2.2.1 of the 3rd Generation Partnership Project (3GPP) technical specification (TS) 38.214 V16.7.0 supports 8 antenna ports and can be applied to downlink transmission as well as uplink transmission.
  • the Type I SP codebook based on the discrete Fourier transform (DFT) matrix will have better performance.
  • DFT discrete Fourier transform
  • This feature is particularly suitable for antenna deployment of network equipment, that is, for downlink transmission.
  • the initial phases of different antenna ports are usually unequal, so the phase difference between any adjacent antenna ports may be unequal.
  • the present application provides a precoding indication method, which adds a phase indication field on the basis of using Type 1 SP codebook through predefined codewords. This field can be used to calibrate the phase difference between transmitting antenna ports, so that it is suitable for the situation where the initial phases of antenna ports are unequal, thereby improving the performance of the codebook.
  • a communication method is provided, which can be executed by a network device or a terminal device, or can also be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: when N1 is equal to 4 and N2 is equal to 1, determining the first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, and when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, determining the first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, the first phase coefficient set The phase coefficient used to indicate the phase difference between any non-first transmitting antenna port and the first transmitting antenna port corresponding to the precoding matrix, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient coefficient
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • N1 when N1 is equal to 4 and N2 is equal to 1, a bit is added to the first information to indicate the second phase coefficient and the third phase coefficient, where represents rounding up, and M2 and M3 represent quantization accuracy of the second phase and the third phase, respectively;
  • first codeword is a codeword in a fully coherent codebook with 1 uplink transmission layer and 4 transmitting antenna ports, and the first codeword is used to indicate the second phase coefficient and the third phase coefficient;
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is sent, where the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information (downlink control indicator, DCI).
  • DCI downlink control indicator
  • the first information is carried in uplink control information UCI.
  • a communication method is provided, which can be executed by a network device or a terminal device, or can also be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: when N1 is equal to 4 and N2 is equal to 1, receiving first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, receiving first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, one of the first phase coefficient set The phase coefficient is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient and the
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the added bits in the first information indicate the second phase coefficient and the third phase coefficient, where M represents rounding up, M2 and M3 represent the quantization accuracy of the second phase and the third phase, respectively; or, the 4 bits added to the first information indicate a first codeword, and the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the second phase coefficient and the third phase coefficient; when N1 is equal to 2 and N2 is equal to 2, the added bits in the first information indicate the third phase coefficient.
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is received, where the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication method is provided, which can be executed by a network device or a terminal device, or can also be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method comprises: determining first information, wherein the first information comprises a first phase coefficient set, wherein the first phase coefficient set A phase coefficient in the combination is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient cannot be 1 at the same time; the first information includes bits, and the bits are used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient respectively, M1, M2 and M3 represent the quantization accuracy of the first phase, the second phase and the third phase respectively; the first information is sent, and the first information is used to determine the precoding matrix.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication method is provided, which can be executed by a network device or a terminal device, or by a component (such as a chip or a chip system) configured in the network device or the terminal device.
  • the method includes: receiving first information, the first information including a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient cannot be 1 at the same time; the first information includes bits, the bits are used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient respectively, M1, M2 and M3 represent the quantization accuracy of the first phase, the second phase and the third phase respectively; determine the precoding matrix according to the first information.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication method may be executed by a network device or a terminal device, or may be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: determining first information, the first information including a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not the same and are 1; the first information includes 4 bits, the 4 bits are used to indicate a first codeword, the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient; sending the first information, the first information is used to determine the precoding matrix.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication method may be executed by a network device or a terminal device, or may be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: receiving first information, the first information including a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not the same and are 1; the first information includes 4 bits, the 4 bits are used to indicate a first codeword, the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient; determining the precoding matrix according to the first information.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna ports can be relatively calibrated, thereby improving the phase difference of the antenna ports. It is applicable to the case where the initial phases of antenna ports are not equal, and improves the performance of the codebook.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication method is provided.
  • the method may be executed by a network device or a terminal device, or may be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: when N1 is equal to 4 and N2 is equal to 1, determining first information, the first information includes a first parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third transmitting antenna port and the second transmitting antenna port, the third phase coefficient represents the phase difference between the fourth transmitting antenna port and the third transmitting antenna port, and when any one of the first phase coefficient, the second phase coefficient and the third phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the any one phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, determining first information, the first information includes the first parameter, the second parameter and the first phase coefficient set , the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents
  • the first phase coefficient when any two of the first phase coefficient, the second phase coefficient and the third phase coefficient are 1, the first parameter and the second parameter are respectively determined according to the phase difference between the transmitting antenna port corresponding to the any two phase coefficients and the first transmitting antenna port, wherein N1 and N2 respectively represent the number of ports of the transmitting antenna in the horizontal direction and the vertical direction of the transmitting end; the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, and the first information is sent, and the first information is used to determine the precoding matrix.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate two other phase coefficients (except the two phase coefficients with a phase coefficient of 1);
  • N1 is equal to 2 and N2 is equal to 2
  • N1 is equal to 2 and N2 is equal to 2
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is sent, where the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information (downlink control indicator, DCI).
  • DCI downlink control indicator
  • the first information is carried in uplink control information UCI.
  • a communication method is provided, which can be executed by a network device or a terminal device, or can also be executed by a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • a component such as a chip or a chip system, etc.
  • the method includes: when N1 is equal to 4 and N2 is equal to 1, receiving first information, the first information includes a first parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third transmitting antenna port and the second transmitting antenna port, the third phase coefficient represents the phase difference between the fourth transmitting antenna port and the third transmitting antenna port, and any one of the first phase coefficient, the second phase coefficient and the third phase coefficient is 1
  • N1 is equal to 2 and N2 is equal to 2
  • first information is received, the first information includes a first parameter, a second parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is sent, where the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information (downlink control indicator, DCI).
  • DCI downlink control indicator
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: when N1 is equal to 4 and N2 is equal to 1, the processing unit is used to determine the first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, the processing unit is used to determine the first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set The coefficient is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second
  • the processing unit when N1 is equal to 4 and N2 is equal to 1, the processing unit is specifically used to add bits to the first information to indicate the second phase coefficient and the third phase coefficient, where represents rounding up, M2 and M3 represent the quantization accuracy of the second phase and the third phase, respectively; or, the processing unit is specifically used to add 4 bits to the first information to indicate the first codeword, and the first codeword is a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4. a codeword, wherein the first codeword is used to indicate the second phase coefficient and the third phase coefficient; when N1 is equal to 2 and N2 is equal to 2, the processing unit is specifically used to add an indication of the third phase coefficient to the first information.
  • the transceiver unit is further used to send first configuration information, and the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: when N1 is equal to 4 and N2 is equal to 1, the transceiver unit is used to receive first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, the transceiver unit is used to receive first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, in the first phase coefficient set A phase coefficient is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a first phase
  • the added bits in the first information indicate the second phase coefficient and the third phase coefficient, where represents rounding up, M2 and M3 respectively represent the quantization accuracy of the second phase and the third phase; or, the 4 bits added to the first information indicate the first codeword, and the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the second phase coefficient and the third phase coefficient; when N1 is equal to 2 and N2 is equal to 2, the added bits in the first information indicate the third phase coefficient.
  • the transceiver unit is further used to receive first configuration information, and the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: a processing unit, used to determine first information, the first information includes a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, the first information includes bits, the bits are used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient respectively, M1, M2 and M3 represent the quantization accuracy of the first phase, the second phase and the third phase respectively; a transceiver unit, used to send the first information, the first information is used to determine the precoding matrix.
  • a processing unit used to determine first information
  • the first information includes a first phase coefficient set
  • a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: a transceiver unit, configured to receive first information, wherein the first information includes a first phase coefficient set, wherein a phase coefficient in the first phase coefficient set is used to indicate a phase relationship between any non-first transmitting antenna port corresponding to the precoding matrix and the first
  • the invention relates to a phase difference between two transmitting antenna ports, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, the first information includes bits, and the bits are used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient respectively, and M1, M2 and M3 respectively represent the quantization accuracy of the first phase, the second phase and the third phase; a processing unit is used to determine a precoding matrix according to the first information.
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: a processing unit, used to determine first information, the first information includes a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, the first information includes 4 bits, the 4 bits are used to indicate a first codeword, the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient; a transceiver unit, used to send the first information, the first information is used to determine the precoding matrix.
  • a processing unit used to determine first information
  • the first information includes a first phase coefficient set
  • a phase coefficient in the first phase coefficient set
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: a transceiver unit, used to receive first information, the first information includes a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, the first information includes 4 bits, the 4 bits are used to indicate a first codeword, the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate the first phase coefficient, the second phase coefficient and the third phase coefficient; a processing unit, used to determine the precoding matrix according to the first information.
  • the first information includes a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding
  • the first information is carried in downlink control information DCI.
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: when N1 is equal to 4 and N2 is equal to 1, a processing unit is used to determine first information, the first information includes a first parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third transmitting antenna port and the second transmitting antenna port, the third phase coefficient represents the phase difference between the fourth transmitting antenna port and the third transmitting antenna port, and when any one of the first phase coefficient, the second phase coefficient and the third phase coefficient is 1, the first parameter is based on the transmitting antenna port corresponding to any one of the phase coefficients and the first transmitting antenna port.
  • the phase difference between antenna ports is determined; when N1 is equal to 2 and N2 is equal to 2, the processing unit is used to determine the first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third transmitting antenna port and the second transmitting antenna port, the third phase coefficient represents the phase difference between the fourth transmitting antenna port and the third transmitting antenna port, in the first phase coefficient, when any two of the first phase coefficient, the second phase coefficient and the third phase coefficient are 1, the first parameter and the second parameter are respectively based on the
  • the phase difference between the transmitting antenna ports corresponding to any two phase coefficients and the first transmitting antenna port is determined, wherein N1 and N2 respectively represent the number of ports of the transmitting antenna in the horizontal direction and the vertical direction of the transmitting end; the first phase coefficient, the
  • the first codeword is a codeword in a fully coherent codebook with an uplink transmission layer number of 1 and a transmitting antenna port number of 4, and the first codeword is used to indicate two other phase coefficients (except the two phase coefficients with a phase coefficient of 1);
  • N1 is equal to 2 and N2 is equal to 2
  • N1 is equal to 2 and N2 is equal to 2
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is sent, and the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information (downlink control indicator, DCI).
  • DCI downlink control indicator
  • the first information is carried in uplink control information UCI.
  • a communication device which may be a network device or a terminal device, or may be a component (such as a chip or a chip system, etc.) configured in the network device or the terminal device.
  • the device includes: when N1 is equal to 4 and N2 is equal to 1, a transceiver unit is used to receive first information, the first information includes a first parameter and a first phase coefficient set, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, the first phase coefficient represents the phase difference between the second transmitting antenna port and the first transmitting antenna port, the second phase coefficient represents the phase difference between the third transmitting antenna port and the second transmitting antenna port, the third phase coefficient represents the phase difference between the fourth transmitting antenna port and the third transmitting antenna port, and when any one of the first phase coefficient, the second phase coefficient and the third phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to any one of the phase coefficients and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, a transceiver unit is used to receive first information, the first information includes the first parameter, the second parameter and A first phase coefficient set, wherein the first phase coefficient set includes a
  • the first parameter and the second parameter are respectively determined according to the phase difference between the transmitting antenna port corresponding to the any two phase coefficients and the first transmitting antenna port, wherein N1 and N2 respectively represent the number of ports of the transmitting antenna in the horizontal direction and the vertical direction of the transmitting antenna at the transmitting end; the first phase coefficient, the second phase coefficient and the third phase coefficient are not 1 at the same time, and the processing unit is used to determine the precoding matrix according to the first information.
  • this embodiment adds a phase indication field on the basis of the existing protocol 8Tx codebook, and adjusts relevant parameters according to the phase difference of adjacent transmitting antenna ports, so that the phase difference of the transmitting antenna port can be relatively calibrated, thereby improving the performance loss caused by the unequal phase difference of the antenna port, which is suitable for the situation where the initial phase of the antenna port is unequal, and improves the performance of the codebook.
  • N1 is equal to 2 and N2 is equal to 2
  • N1 is equal to 2 and N2 is equal to 2
  • the added phase indication field can provide flexible indication to achieve the purpose of accurate indication or cost saving.
  • first configuration information is sent, and the first configuration information includes the N1 and the N2.
  • the first information is carried in downlink control information (downlink control indicator, DCI).
  • DCI downlink control indicator
  • the first information is carried in uplink control information UCI.
  • a communication device comprising modules or units for executing the method in the first to eighth aspects and any possible implementation of the first to eighth aspects.
  • a communication device comprising a processor.
  • the processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in any possible implementation of the first aspect to the eighth aspect and the first aspect to the eighth aspect.
  • the communication device also includes a memory.
  • the communication device also includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor comprising: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of the first to eighth aspects and the first to eighth aspects.
  • the processor can be a chip
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits.
  • the input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver
  • the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter
  • the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.
  • a processing device comprising a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the method in any possible implementation of the first aspect to the eighth aspect and the first aspect to the eighth aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be separately set on different chips.
  • ROM read-only memory
  • the embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.
  • the relevant data interaction process can be a process of outputting indication information from a processor
  • receiving capability information can be a process of receiving input capability information from a processor.
  • the processed output data can be output to a transmitter, and the input data received by the processor can come from a receiver.
  • the transmitter and the receiver can be collectively referred to as a transceiver.
  • the processing device in the above-mentioned aspect 20 may be a chip.
  • the processor may be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor implemented by reading software codes stored in a memory.
  • the memory may be integrated in the processor or may be located outside the processor and exist independently.
  • a computer program product which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute a method in any possible implementation of the above-mentioned first to eighth aspects and the first to eighth aspects.
  • a computer program also referred to as code, or instructions
  • a computer-readable storage medium stores a computer program (which may also be When the code (referred to as code or instruction) is executed on a computer, the computer executes the method in any possible implementation of the first to eighth aspects and the first to eighth aspects mentioned above.
  • a communication system comprising the aforementioned transmitting end and receiving end.
  • FIG1 is a schematic diagram of the architecture of a communication system applicable to the precoding indication method provided in an embodiment of the present application;
  • FIG2 is a schematic flow chart of a precoding indication method provided in an embodiment of the present application.
  • FIG3 is a schematic flow chart of a precoding indication method provided in an embodiment of the present application.
  • FIG4 is a schematic block diagram of a communication device provided in an embodiment of the present application.
  • FIG5 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of the structure of a network device provided in an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR).
  • LTE Long Term Evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • WiMAX worldwide interoperability for microwave access
  • 5G mobile communication system can include non-standalone (NSA) and/or standalone (SA).
  • SA standalone
  • the technical solutions of the embodiments of the present application can also be applied to future communication systems, such as the sixth generation mobile communication system, etc., which are not limited in the present application.
  • IoT Internet of Things
  • MTC machine type communication
  • LTE-M Long Term Evolution-machine
  • D2D device-to-device
  • M2M machine-to-machine
  • IoT network can include vehicle networking, for example.
  • the communication mode in the vehicle networking system is collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (vehicle to vehicle, V2V) communication, vehicle to infrastructure (vehicle to infrastructure, V2I) communication, vehicle to pedestrian (vehicle to pedestrian, V2P) communication or vehicle to network (vehicle to network, V2N) communication, etc.
  • vehicle to vehicle vehicle to vehicle, V2V
  • V2I vehicle to infrastructure
  • V2P vehicle to pedestrian
  • V2N vehicle to network
  • the network device can be any device with wireless transceiver function.
  • the device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), wireless fidelity (wireless fidelity) lity, WiFi) system, an access point (AP), a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., and can also be a gNB in a 5G, such as NR, system, or a transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or, can also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU),
  • RNC radio
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some of the gNB functions, and the DU implements some of the gNB functions.
  • the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers.
  • the DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC), medium access control (MAC) and physical (PHY) layers.
  • the AAU implements some physical layer processing functions, RF processing and related functions of active antennas.
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), and this application does not limit this.
  • the network equipment provides services to the cell, and the terminal equipment uses the transmission resources (for example, frequency domain resources, or frequency domain resources) allocated by the network equipment.
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB), or to a base station corresponding to a small cell.
  • the small cell here may include: a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • UE user equipment
  • a terminal device can be a device that provides voice/data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc.
  • some examples of terminals can be: mobile phones, tablet computers (pad), computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (mobile internet devices, MIDs), virtual reality (virtual reality, VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control (industrial control), wireless terminals in self-driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety (transportation safety), etc.
  • Wireless terminals wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved public land mobile networks (PLMN), etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • PLMN public land mobile networks
  • wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.
  • the terminal device can also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.
  • IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband NB technology, for example.
  • terminal devices can also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.
  • sensors such as smart printers, train detectors, and gas stations.
  • Their main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.
  • FIG. 1 shows a schematic diagram of a communication system 100 applicable to the method provided in the embodiments of the present application.
  • the communication system 100 may include at least one network device, such as the network device 101 in the 5G system shown in FIG. 1; the communication system 100 may also include at least one terminal device, such as the terminal devices 102 to 107 shown in FIG. 1.
  • the terminal devices 102 to 107 may be mobile or fixed.
  • the network device 101 and one or more of the terminal devices 102 to 107 may communicate via a wireless link.
  • Each network device may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area. For example, the network device may send configuration information to the terminal device, and the terminal device may send uplink data to the network device based on the configuration information; for another example, the network device may send downlink data to the terminal device. For another example, the network device may calculate the number of streams and uplink precoding for uplink transmission of the terminal device, and indicate it to the terminal device through downlink information. Therefore, the network device 101 and the terminal devices 102 to 107 in FIG. 1 constitute a communication system.
  • the terminal devices may communicate directly with each other.
  • direct communication between the terminal devices may be achieved using D2D technology.
  • the terminal devices 105 and 106, and the terminal devices 105 and 107 may communicate directly using D2D technology.
  • the terminal devices 106 and 107 may communicate with the terminal device 105 individually or simultaneously.
  • Terminal devices 105 to 107 may also communicate with network device 101 respectively. For example, they may communicate directly with network device 101, such as terminal devices 105 and 106 in the figure may communicate directly with network device 101; or they may communicate indirectly with network device 101, such as terminal device 107 in the figure communicates with network device 101 via terminal device 106.
  • FIG. 1 exemplarily shows a network device and multiple terminal devices, as well as communication links between the communication devices.
  • the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, such as more or fewer terminal devices. This application does not limit this.
  • the terminal devices in the coverage area of each network device can send uplink data to any network device, and can also send uplink data to multiple network devices.
  • uplink data sent by terminal devices in adjacent areas of the coverage areas of two network devices can be received by one of the two network devices, or can be received jointly by the two network devices.
  • Each of the above-mentioned communication devices may be configured with multiple antennas.
  • the multiple antennas may include at least one transmitting antenna for sending signals and at least one receiving antenna for receiving signals.
  • each communication device also additionally includes a transmitter chain and a receiver chain, and those skilled in the art will appreciate that they may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, or antennas, etc.). Therefore, the network device and the terminal device may communicate via multi-antenna technology.
  • the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, but the embodiments of the present application are not limited thereto.
  • the transmitter can obtain certain information about the channel (a prerequisite for precoding), it can use this information to preprocess the transmitted signal to improve the system's transmission rate and link reliability.
  • the technology that uses the transmitter's channel state information to preprocess the transmitted signal is called precoding technology.
  • the terminal device needs to precode the uplink transmission information during uplink transmission, and the network device needs to precode the downlink transmission information during downlink transmission.
  • the uplink data can be data such as uplink business data or uplink signaling
  • the downlink data can be data such as downlink business data or downlink signaling.
  • the object to be precoded can also be any uplink transmission information or downlink transmission information, and the embodiments of the present application do not specifically limit this.
  • the transmitting device can process the signal to be transmitted by means of a precoding matrix matching the channel state when the channel state is known, so that the precoded signal to be transmitted is adapted to the channel, thereby reducing the complexity of the receiving device to eliminate the influence between channels.
  • the quality of the received signal such as signal to interference plus noise ratio (SINR), etc.
  • SINR signal to interference plus noise ratio
  • the transmitting device and multiple receiving devices can be transmitted on the same time-frequency resources, that is, multiple user multiple input multiple output (MU-MIMO) is realized.
  • MU-MIMO multiple user multiple input multiple output
  • the transmitting device can also perform precoding in other ways. For example, when the channel information (such as but not limited to the channel matrix) cannot be obtained, a pre-set precoding matrix or a weighted processing method is used for precoding, etc. For the sake of brevity, the specific content is not repeated in this article.
  • the transmitting antenna port of the terminal device is involved.
  • One or more physical antennas of the terminal device constitute a logical antenna, and one transmitting antenna port corresponds to a port of a logical antenna.
  • the number of transmitting antenna ports of the terminal device can be one or more, for example, the terminal device has 2 transmitting antenna ports, 4 transmitting antenna ports, 8 transmitting antenna ports, etc.
  • the coherence capability of a terminal device includes non-coherent, partially coherent, or fully coherent.
  • Non-coherent means that the terminal device can only send uplink data through one of the multiple transmit antenna ports at a time, or it can be described as non-coherent between the multiple transmit antenna ports;
  • partially coherent means that the terminal device can send uplink data through some of the multiple transmit antenna ports (at least two) at the same time, or it can be described as partially coherent between the multiple transmit antenna ports;
  • fully coherent means that the terminal device can send uplink data through all of the multiple transmit antenna ports at the same time, or it can be described as fully coherent between the multiple transmit antenna ports.
  • the number of uplink transmission layers refers to the number of uplink data streams, or the number of spatial streams.
  • the maximum number of uplink transmission layers is the rank of the MIMO channel matrix, and the rank of the MIMO channel matrix is the number of diagonal elements (singular values) of the intermediate diagonal matrix obtained after performing transfer matrix singular value decomposition (SVD) on the MIMO channel matrix.
  • the maximum number of uplink transmission layers of a terminal device is less than or equal to the number of transmit antenna ports of the terminal device, and the actual number of uplink transmission layers of the terminal device is less than or equal to the maximum number of uplink transmission layers of the terminal device.
  • the maximum number of uplink transmission layers of a terminal device is equal to the number of transmit antenna ports of the terminal device. For example, if the number of transmit antenna ports of the terminal device is 8, then the maximum number of transmission layers corresponding to the number of transmit antenna ports of the terminal device is 8, and the number of uplink transmission layers of the terminal device can be any integer from 1 to 8.
  • the codebook in the embodiment of the present application mainly complies with the codebook defined by the 3rd Generation Partnership Project 3GPP standard, such as 3GPP TS38.211 protocol.
  • the codebook defined in the protocol may also be described as an uplink codebook.
  • multiple codebooks are defined in the protocol of version V16.7.0 of 3GPP TS 38.211, each codebook contains multiple codewords, and the codewords in the same codebook correspond to the same number of transmit antenna ports and the same number of uplink transmission layers.
  • a codeword is also called an uplink precoding matrix.
  • Table 1 takes the codebook with an uplink transmission layer number of 1 and a transmit antenna port number of 4 as an example.
  • Table 1 shows that the TPMI values corresponding to the 8 codewords in the first row from left to right are 0-7, the TPMI values corresponding to the 8 codewords in the second row from left to right are 8-15, the TPMI values corresponding to the 8 codewords in the third row from left to right are 16-23, and the TPMI values corresponding to the 4 codewords in the fourth row from left to right are 24-27.
  • Each codeword is a 4 ⁇ 1 matrix, that is, each matrix includes 4 rows, indicating that the number of transmit antenna ports corresponding to the codeword is 4; each matrix includes 1 column, indicating that the number of uplink transmission layers corresponding to the codeword is 1.
  • Each spatial basis vector corresponds to a transmit beam of the transmitting device.
  • the spatial basis vector can be, for example but not limited to, a column vector of a two-dimensional DFT matrix or a column vector of an oversampled two-dimensional DFT matrix, that is, the spatial basis vector can be a two-dimensional DFT vector.
  • Two-dimensional DFT vectors can generally be used to describe a beam formed by superimposing a horizontal beam and a vertical beam.
  • the spatial basis vector can also be an eigenvector determined according to the spatial statistical characteristics of the channel.
  • it can be an eigenvector obtained by performing singular value decomposition (SVD) on the spatial statistical covariance matrix of the channel, that is, a column vector of the unitary matrix of the SVD, etc.
  • SVD singular value decomposition
  • the present application is not limited to this.
  • multiple spatial basis vectors constitute a spatial basis vector set, which may be pre-defined by both the receiving device and the transmitting device, for example, pre-defined according to a protocol, but the present application is certainly not limited thereto.
  • vectors described in this article may be understood as vectors of the same form, such as row vectors or column vectors.
  • the dimension of the spatial basis vector is N1*N2, that is, the spatial basis vector includes N1*N2 elements, where N1 and N2 may be the number of horizontal and vertical transmitting antenna ports of the transmitting end device in one polarization direction, respectively.
  • Reference signal (RS) and precoding reference signal may also be called a pilot, a reference sequence, etc.
  • the reference signal may be a reference signal for channel measurement.
  • the reference signal may be a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), etc.
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • the precoded reference signal may be a reference signal obtained by precoding the reference signal.
  • precoding may specifically include beamforming and/or phase rotation.
  • beamforming may be implemented, for example, by precoding the reference signal based on one or more angle vectors.
  • Phase rotation may be implemented, for example, by precoding the reference signal with one or more delay vectors.
  • the network device usually estimates the channel state of the wireless channel between the terminal device and the network device based on the reference signal sent by the terminal device for measuring the uplink channel, such as the channel sounding reference signal (SRS).
  • the network device determines the number of transmitting antenna ports used by the terminal device according to the channel state, and then calculates the uplink precoding matrix that can be used by the terminal device when sending uplink data according to the number of transmitting antenna ports used by the terminal device and the channel state.
  • the uplink precoding matrix calculated by the network device is called the second uplink precoding matrix.
  • the second uplink precoding matrix corresponds to the number of transmitting antenna ports used by the terminal device and a specific number of uplink transmission layers.
  • the network device selects the codeword closest to the second uplink precoding matrix from the codebook predefined by the aforementioned 3GPP protocol according to the specific number of uplink transmission layers, and indicates the TPMI and the number of uplink transmission layers corresponding to the codeword to the terminal device.
  • the number of transmit antenna ports corresponding to the TPMI indicated by the network device can be used as the number of transmit antenna ports used by the terminal device to send uplink data
  • the number of uplink transmission layers indicated by the network device can be used as the number of uplink transmission layers mapped to the uplink data to be sent by the terminal device.
  • the terminal device determines the codeword according to the TPMI and the number of uplink transmission layers indicated by the network device, uses the codeword to precode the uplink data, and sends the precoded uplink data based on the transmit antenna port and the number of uplink transmission layers corresponding to the codeword.
  • the codeword selected by the network device is consistent with the second uplink precoding matrix. If the codebook predefined by the 3GPP protocol does not contain the second uplink precoding matrix, that is, the second uplink precoding matrix is not a codeword in the codebook predefined by the 3GPP protocol, then the codeword selected by the network device may be a codeword with the smallest difference from the second uplink precoding matrix.
  • the smallest difference may be the smallest Euclidean distance between the codeword selected by the network device in the codebook predefined by the 3GPP protocol and the second uplink precoding matrix; the smallest difference may also be the codeword selected by the network device in the codebook predefined by the 3GPP protocol has the most identical elements with the second uplink precoding matrix.
  • the maximum number of uplink transmission layers corresponding to the codewords indicated by network devices supported by the current 3GPP protocol is 4, and the maximum number of transmit antenna ports is 4.
  • terminal devices support more and more transmit antenna ports.
  • the number of transmit antenna ports of terminal devices can be further increased to 8. It can be seen that the number of transmit antenna ports used by the terminal device may exceed the maximum number of transmit antenna ports corresponding to the codewords supported by the current 3GPP protocol; accordingly, the number of uplink transmission layers may also exceed the maximum number of transmission layers corresponding to the codewords supported by the current 3GPP protocol.
  • the design of the downlink Type I single-panel (SP) codebook in Section 5.2.2.2.1 of the protocol 3GPP TS 38.214 V16.7.0 can also be applied to uplink transmission, enabling codebook-based uplink transmission with 8 transmitting antenna ports and 8 maximum uplink transmission layers.
  • the Type I SP codebook supports the combination of ports (N 1 , N 2 ) and oversampling factors (O 1 , O 2 ) shown in Table 2 below, where N 1 represents the number of logical antenna ports in a certain direction of the same polarization, generally referring to the horizontal direction. N 2 represents the number of logical antenna ports in another direction of the same polarization, generally referring to the vertical direction. O 1 represents the DFT oversampling multiple in the direction where N 1 is located (horizontal direction). O 2 represents the DFT oversampling multiple in the direction where N 2 is located (vertical direction).
  • the corresponding case is the case where the number of CSI-RS ports in the above table is 8, and there are two configurations (N 1 , N 2 ) and (O 1 , O 2 ).
  • the number of CSI-RS ports is 8 for dual polarization
  • the transmitting antenna is a dual polarization antenna
  • N1*N2 4
  • the number of rows of the precoding matrix can be (N1*N2) ⁇ 2, where 2 represents two polarization directions.
  • the codebook indications for different transmission layers in the protocol 3GPP TS 38.214V16.7.0 are as follows:
  • the codebook indication of layer 1 is shown in Table 3 below.
  • the codebook indication of layer 2 is shown in Table 4 below.
  • the codebook indication of the 3 layers is shown in Table 5 below.
  • the codebook indication of the 4 layers is shown in Table 6 below.
  • the codebook indication of 5 layers is shown in Table 7 below.
  • the codebook indication of 6 layers is shown in Table 8 below.
  • the codebook indication of 7 layers is shown in Table 9 below.
  • the codebook indication of 8 layers is shown in Table 10 below.
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of n corresponds to i 2 .
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of l' corresponds to i 1,1 +k 1
  • the value of m' corresponds to i 1,2 +k 2
  • the value of n corresponds to i 2 .
  • the Type 1 SP codebook based on the DFT matrix will have better performance. This feature is particularly suitable for antenna deployment of network equipment, that is, for downlink transmission. However, if the physical antenna system or architecture between different antenna ports on the transmitter does not match, or the RF link hardware does not match, the initial phases of different antenna ports are usually unequal, so the phase difference between any adjacent antenna ports may be unequal. At this time, using the Type 1 SP codebook based on the DFT matrix will have a large performance loss. This situation is likely to occur in the antenna deployment of small devices (such as terminal devices).
  • an embodiment of the present application provides a precoding indication method.
  • a phase indication field is added on the basis of using the Type 1 SP codebook. This field can be used to calibrate the phase difference between the transmitting antenna ports, so that it is suitable for the situation where the initial phases of the antenna ports are unequal, thereby improving the performance of the codebook.
  • predefined can refer to that defined by the communication protocol and configured in the sending and receiving ends of the communicating parties; it can also be determined by the network device and configured to the terminal device, where the configuration can be explicitly configured through signaling or implicitly configured through other information.
  • indication may include direct indication and indirect indication, and may also include explicit indication and implicit indication.
  • the information indicated by a certain information is called information to be indicated.
  • the information to be indicated may be directly indicated, wherein the information to be indicated itself or the index of the information to be indicated, etc.
  • the information to be indicated may also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated.
  • only a part of the information to be indicated may be indicated, while the other parts of the information to be indicated are known, agreed in advance or derivable.
  • the indication of specific information may be realized by means of the arrangement order of each information agreed in advance (such as specified by the protocol), thereby reducing the indication overhead to a certain extent.
  • a precoding indication method provided by an embodiment of the present application is described in detail below.
  • the terminal device shown in the embodiment below can be replaced by a component (such as a chip or a chip system) configured in the terminal device.
  • the network device shown in the embodiment below can also be replaced by a component (such as a chip or a chip system) configured in the network device.
  • the embodiments shown below do not specifically limit the specific structure of the execution subject of the method provided in the embodiments of the present application. It is sufficient to run a program that records the code of the method provided in the embodiment of the present application to communicate according to the method provided in the embodiment of the present application.
  • the executor of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.
  • the transmitting end sends a reference signal to the receiving end.
  • the receiving end sends precoding indication information to the transmitting end.
  • the transmitting end determines precoding and sends data.
  • the reference signal is used by the receiving end to perform channel measurement.
  • the precoding indication information includes an uplink precoding matrix indication and an uplink transmission layer number indication. Further, the terminal device determines the uplink precoding matrix and the uplink transmission layer number according to the precoding indication information, thereby precoding the uplink data.
  • the network device After the network device performs channel measurement based on the uplink reference signal, it obtains the uplink channel information of the terminal device, calculates the uplink precoding matrix (second uplink precoding matrix) and the number of uplink transmission layers of the terminal device based on the uplink channel information, and indicates the uplink precoding matrix and the number of uplink transmission layers to the terminal device.
  • the uplink precoding matrix second uplink precoding matrix
  • FIG3 is a schematic flow chart of a precoding indication method provided by an embodiment of the present application.
  • FIG3 is a schematic flow chart of a precoding indication method 300 provided by an embodiment of the present application from the perspective of device interaction.
  • the method 300 shown in FIG3 may include S310 to S340. The steps in the method 300 are described in detail below.
  • a first codebook is predefined.
  • the first codebook is used to determine a precoding matrix.
  • the precoding matrix may be an uplink precoding matrix used by the terminal device when sending uplink data;
  • the transmitting end is a network device, the precoding matrix may be a downlink precoding matrix used by the network device when sending downlink data.
  • the determination process of the first codebook is described in detail below.
  • the codeword structure in the first codebook is as follows:
  • v l,m can refer to the existing technology, for example, Section 5.2.2.2.1 of 3GPP TS 38.214 V16.7.0.
  • the value of l is obtained by i 1,1 indicated by the network device
  • the value of m is obtained by i 1,2 indicated by the network device
  • the value of n is obtained by i 2 indicated by the network device
  • the value of k is obtained by i 1,3 indicated by the network device.
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of n corresponds to i 2 .
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of l' corresponds to i 1,1 +k 1
  • the value of m' corresponds to i 1,2 +k 2
  • the value of n corresponds to i 2
  • the value of k(k 1 , k 2 ) corresponds to i 1,3 .
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of l' corresponds to i 1,1 +k 1
  • the value of m' corresponds to i 1,2 +k 2
  • the value of n corresponds to i 2
  • the value of k(k 1 , k 2 ) corresponds to i 1,3 .
  • the value of l corresponds to i 1,1
  • the value of m corresponds to i 1,2
  • the value of l' corresponds to i 1,1 +k 1
  • the value of m' corresponds to i 1,2 +k 2
  • the value of n corresponds to i 2
  • the value of k(k 1 , k 2 ) corresponds to i 1,3 .
  • the value of l corresponds to i 1,1
  • the value of l' corresponds to i 1,1 +O 1
  • the value of l" corresponds to i 1,1 +O 1
  • the value of m corresponds to i 1,2
  • the value of m' corresponds to i 1,2
  • the value of m" corresponds to i 1,2 +O 2
  • the value of n corresponds to i 2 .
  • the value of l corresponds to i 1,1
  • the value of l' corresponds to i 1,1 +O 1
  • the value of l" corresponds to i 1,1 +O 1
  • the value of m corresponds to i 1,2
  • the value of m' corresponds to i 1,2
  • the value of m" corresponds to i 1,2 +O 2
  • the value of n corresponds to i 2 .
  • N1 is 4 and N2 is 1, the value of l corresponds to i1,1 , the value of l' corresponds to i1,1 + O1 , the value of l" corresponds to i1,1 + 2O1 , the value of l"' corresponds to i1,1 + 3O1 , the value of m corresponds to 0, the value of m' corresponds to 0, the value of m" corresponds to 0, the value of m"' corresponds to 0, and the value of n corresponds to i2 .
  • the parameter configurations of N1 and N2 are different under different configurations. Please refer to Table 9, which will not be repeated here.
  • N1 is 4 and N2 is 1, the value of l corresponds to i1,1 , the value of l' corresponds to i1,1 + O1 , the value of l" corresponds to i1,1 + 2O1 , the value of l"' corresponds to i1,1 + 3O1 , the value of m corresponds to 0, the value of m' corresponds to 0, the value of m" corresponds to 0, the value of m"' corresponds to 0, and the value of n corresponds to i2 .
  • the parameter configurations of N1 and N2 are different under different configurations. Please refer to Table 10, which will not be repeated here.
  • ⁇ 1 represents the phase difference between the second Tx port and the first Tx
  • ⁇ 2 represents the phase difference between the third Tx port and the first Tx
  • ⁇ 3 represents the phase difference between the fourth Tx port and the first Tx.
  • ⁇ 1 represents the phase difference between the second Tx port and the first Tx
  • ⁇ 2 represents the phase difference between the third Tx port and the second Tx
  • ⁇ 3 represents the phase difference between the fourth Tx port and the third Tx.
  • ⁇ 1 , ⁇ 2 and ⁇ 3 are determined according to the following formula.
  • Mi can be used for the quantization accuracy of the phase.
  • Mi can be configured by the network device and sent to the terminal device, for example, can be sent to the terminal device through an RRC message, or can be predetermined by the protocol.
  • ⁇ 1 corresponds to M 1
  • ⁇ 2 corresponds to M 2
  • ⁇ 3 corresponds to M 3
  • Mi (M 1 , M 2 , M 3 ) can have the same value or different values. This embodiment of the application is not limited to this.
  • ⁇ 1 , ⁇ 2 and ⁇ 3 are not 1 at the same time.
  • phase differences represented by ⁇ 1 , ⁇ 2 and ⁇ 3 are actual phase differences.
  • An optional understanding is that, assuming that there are two transmitting antenna ports, since the physical positions of the antenna arrays corresponding to the two transmitting antenna ports are different, the signal transmission distances are different, resulting in a phase difference between the two antenna ports, which is recorded as ⁇ ; assuming that the initial phase of the first antenna port is The initial phase of the second antenna port is ⁇ 2 , and the actual phase difference between the two antenna ports should be
  • the receiving end sends first configuration information to the sending end, and correspondingly, the sending end receives the first configuration information from the receiving end.
  • the first configuration information is used to indicate the configuration of the antenna port when the number of ports is 8.
  • the first configuration information includes N1 and N2 , or information used to indicate N1 and N2 .
  • the first configuration information is used to indicate the configuration of the antenna port when the number of CSI-RS ports is 8.
  • the first configuration information is used to indicate the configuration of the antenna port when the number of SRS ports is 8.
  • N1 and N2 are configurations predefined by the protocol, and the sender can directly obtain the configuration of N1 and N2 according to the configuration predefined by the protocol.
  • the network device may carry the first configuration information, for example, through high-layer signaling, and the high-layer signaling may include, for example, an RRC message, a MAC-CE, etc., to carry the configuration information.
  • the network device may also carry the configuration information through physical layer signaling, and the physical layer signaling may include, for example, a DCI, etc. This application does not limit the specific signaling used to carry the configuration information.
  • the transmitting end sends a reference signal to the receiving end.
  • the reference signal is used for channel estimation and channel measurement.
  • the transmitting end is a terminal device and the receiving end is a network device
  • the reference signal is, for example, SRS.
  • the transmitting end is a network device and the receiving end is a terminal device
  • the reference signal is, for example, a CRS or a CSI-RS.
  • the receiving end estimates the channel state of the wireless channel between the receiving end and the receiving end based on the reference signal.
  • the receiving end can determine the number of transmitting antenna ports used by the receiving end based on the channel state, and then calculate the precoding matrix that can be used by the transmitting end when sending data based on the number of transmitting antenna ports and the channel state.
  • the precoding matrix calculated by the receiving end is called the second precoding matrix.
  • S330 The receiving end generates first information according to the first codebook.
  • the first information includes a first parameter set and a first phase coefficient set.
  • the first parameter set includes a first parameter, a second parameter and a third parameter, wherein the first parameter may be a value of l, the second parameter may be a value of m, and the third parameter may be a value of n.
  • the first parameter set includes a first parameter, a second parameter, a third parameter and a fourth parameter, wherein the first parameter may be a value of l, the second parameter may be a value of m, the third parameter may be a value of n, and the fourth parameter may be a value of k.
  • the first phase coefficient set includes a first phase coefficient, a second phase coefficient, and a third phase coefficient.
  • the first phase coefficient is used to indicate ⁇ 1
  • the second phase coefficient is used to indicate ⁇ 2
  • the third phase coefficient is used to indicate ⁇ 3 .
  • ⁇ 1 , ⁇ 2 and ⁇ 3 are not 1 at the same time.
  • the receiving end estimates the channel state according to the reference signal. For the acquired channel state, the receiving end determines a first parameter set and a first phase coefficient set based on the first codebook, wherein the first parameter set and the first phase coefficient set enable the precoding based on the first codebook to have better performance.
  • the receiving end determines the appropriate parameter configuration based on the first codebook to calibrate the phases of different antenna ports, and can determine the parameter configuration with relatively good performance through calculation, and indicate the configuration to the transmitting end for precoding.
  • the network device may send the first information via DCI.
  • the terminal device can send the first information via UCI.
  • the first information is used by the transmitting end to determine the precoding matrix.
  • the transmitting end determines a precoding matrix according to the first information. Further, the transmitting end precodes the data according to the precoding matrix and then transmits the data.
  • the receiving end may only need to indicate the value of the first parameter l and two of ⁇ 1 , ⁇ 2 and ⁇ 3 to the sending end.
  • Two of ⁇ 1 , ⁇ 2 , and ⁇ 3 can be indicated by two methods.
  • Method 2 joint indication: 4 bits are added to the first information to indicate that a codeword in a fully coherent codebook with 1 uplink transmission layer and 4 transmitting antenna ports is used as two of ⁇ 1 , ⁇ 2 and ⁇ 3 .
  • the codewords of the fully coherent codebook with an uplink transmission layer number of 1 and a transmit antenna port number of 4 may refer to the codewords with TPMI of 12-27 in Table 1.
  • the phase difference between antenna ports 1 and 2 is obtained by substituting into the formula:
  • the phase difference between antenna ports 2 and 3 is
  • the phase difference between antenna ports 3 and 4 is
  • the phase difference between any adjacent antenna ports can be adjusted by the values of l and m.
  • the receiving end may only need to indicate the values of l and m and one of ⁇ 1 , ⁇ 2 and ⁇ 3 to the sending end.
  • One of ⁇ 1 , ⁇ 2 and ⁇ 3 may be indicated in a manner similar to the above-mentioned method 1.
  • the receiving end selects the first parameter, the second parameter, and the third parameter (including the fourth parameter when Rank is 2, 3 or 4) and indicates them to the sending end, which is not limited in this embodiment of the present application.
  • the receiving end When the receiving end indicates the first phase coefficient set ⁇ 1 , ⁇ 2 and ⁇ 3 to the transmitting end, the receiving end may add bits are used to indicate ⁇ 1 , ⁇ 2 and ⁇ 3 respectively.
  • the phase coefficient can be indicated by any value range in the first information.
  • the DCI may be increased bit to indicate ⁇ 1 , increase bit to indicate ⁇ 2 , increasing bits to indicate ⁇ 3 .
  • the receiving end selects the first parameter, the second parameter, and the third parameter (including the fourth parameter when Rank is 2, 3 or 4) and indicates them to the sending end, which is not limited in this embodiment of the present application.
  • a joint indication method may be adopted, where 4 bits are added to the first information to indicate a codeword in a fully coherent codebook with 1 uplink transmission layer and 4 transmitting antenna ports as ⁇ 1 , ⁇ 2 and ⁇ 3 .
  • the codewords of the fully coherent codebook with an uplink transmission layer number of 1 and a transmit antenna port number of 4 may refer to the codewords with TPMI of 12-27 in Table 1.
  • S340 The receiving end sends first information to the sending end.
  • S350 Determine a precoding matrix according to the first information.
  • the uplink precoding matrix is determined according to the first information.
  • a downlink precoding matrix is determined according to the first information.
  • a phase indication field is added on the basis of using the Type 1 SP codebook. This field can be used to calibrate the phase difference between the transmitting antenna ports, so that it is suitable for the situation where the initial phases of the antenna ports are unequal, thereby improving the performance of the codebook.
  • Fig. 4 is a schematic block diagram of a communication device provided in an embodiment of the present application.
  • the communication device 400 includes a transceiver unit 420 and a processing unit 410, wherein the transceiver unit 420 can be used to implement corresponding communication functions, and the processing unit 410 can be used to perform data processing.
  • the transceiver unit 420 may also be referred to as a communication interface or a communication unit, including a sending unit and/or a receiving unit.
  • the transceiver unit 420 may be a transceiver (including a transmitter and/or a receiver), an input/output interface (including an input and/or output interface), a pin or a circuit, etc.
  • the transceiver unit 420 may be used to perform the steps of sending and/or receiving in the above method embodiment.
  • the processing unit 410 may be a processor (may include one or more), a processing circuit with a processor function, etc., and may be used to execute other steps except sending and receiving in the above method embodiment.
  • the device 400 further includes a storage unit, which may be a memory, an internal storage unit (e.g., a register, a cache, etc.), an external storage unit (e.g., a read-only memory, a random access memory, etc.), etc.
  • the storage unit is used to store instructions, and the processing unit 410 executes the instructions stored in the storage unit so that the communication device executes the above method.
  • the apparatus 400 may be used to perform the actions performed by the sending end in each of the above method embodiments, such as It can be used to execute the actions executed by the sender in the above method 300.
  • the device 400 can be a component of a network device or a terminal device
  • the transceiver unit 420 is used to execute the operations related to the sending and receiving of the sender in the above method
  • the processing unit 410 is used to execute the operations related to the processing of the sender in the above method embodiment.
  • the processing unit 410 when N1 is equal to 4 and N2 is equal to 1, is used to determine the first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, it is used to determine the first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when N1 is
  • a transceiver unit is used to send the first information, and the first information is used to determine the precoding matrix.
  • transceiver unit 420 and the processing unit 410 may also perform other operations performed by the transmitting end in the above method 300, which will not be described in detail here.
  • the device 400 can be used to execute the actions executed by the receiving end in each of the above method embodiments, such as the device 400 can be used to execute the actions executed by the receiving end in the above method 300.
  • the device 400 can be a component of the receiving end
  • the transceiver unit 420 is used to execute the transceiver-related operations of the receiving end of the above method
  • the processing unit 410 is used to execute the processing-related operations of the receiving end in the above method embodiments.
  • the transceiver unit 420 when N1 is equal to 4 and N2 is equal to 1, is used to receive first information, the first information includes a first parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and a third phase coefficient, when the first phase coefficient is 1, the first parameter is determined according to the phase difference between the transmitting antenna port corresponding to the first phase coefficient and the first transmitting antenna port; when N1 is equal to 2 and N2 is equal to 2, it is used to receive first information, the first information includes a first parameter, a second parameter and a first phase coefficient set, a phase coefficient in the first phase coefficient set is used to indicate the phase difference between any non-first transmitting antenna port corresponding to the precoding matrix and the first transmitting antenna port, the first phase coefficient set includes a first phase coefficient, a second phase coefficient and
  • transceiver unit 420 and the processing unit 410 may also perform other operations performed by the receiving end in the above method 300, which will not be described in detail here.
  • the device 400 here is embodied in the form of a functional unit.
  • the term "unit” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the device 400 can be specifically a network device in the above-mentioned embodiments, and can be used to execute the various processes and/or steps corresponding to the network device in the above-mentioned method embodiments. To avoid repetition, it will not be repeated here.
  • the apparatus 400 of each of the above-mentioned solutions has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method, or the apparatus 400 of each of the above-mentioned solutions has the function of implementing the corresponding steps executed by the network device in the above-mentioned method.
  • the function can be implemented by hardware, or the corresponding software can be implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver module can be replaced by a transceiver (for example, the sending unit in the transceiver module can be replaced by a transmitter, and the receiving unit in the transceiver module can be replaced by a receiver), and other units, such as the processing module, can be replaced by a processor, respectively performing the sending and receiving operations in each method embodiment to and related processing operations.
  • the transceiver module can be replaced by a transceiver (for example, the sending unit in the transceiver module can be replaced by a transmitter, and the receiving unit in the transceiver module can be replaced by a receiver), and other units, such as the processing module, can be replaced by a processor, respectively performing the sending and receiving operations in each method embodiment to and related processing operations.
  • the transceiver unit 420 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing module may be a processing circuit.
  • the device in FIG. 4 may be a network element or device in the aforementioned embodiment, or may be a chip or a chip system, such as a system on chip (SoC).
  • the transceiver module may be an input and output circuit or a communication interface; the processing module may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.
  • FIG5 is a schematic diagram of a communication architecture provided in an embodiment of the present application.
  • the communication device 500 shown in FIG5 includes: a processor 510, a memory 520, and a transceiver 530.
  • the processor 510 is coupled to the memory 520 and is used to execute instructions stored in the memory 520 to control the transceiver 530 to send and/or receive signals.
  • processor 510 and the memory 520 can be combined into one processing device, and the processor 510 is used to execute the program code stored in the memory 520 to implement the above functions.
  • the memory 520 can also be integrated into the processor 510, or independent of the processor 510.
  • the processor 510 can also correspond to each processing unit in the above communication device, and the transceiver 530 can correspond to each receiving unit and sending unit in the above communication device.
  • the transceiver 530 may include a receiver (or receiver) and a transmitter (or transmitter).
  • the transceiver may further include an antenna, and the number of antennas may be one or more.
  • the transceiver may also be a communication interface or an interface circuit.
  • the communication device 500 may correspond to the terminal device and the network device in the method 700 and the method 800 according to the embodiment of the present application. It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.
  • the chip When the communication device 500 is a chip, the chip includes an interface unit and a processing unit, wherein the interface unit may be an input/output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the interface unit may be an input/output circuit or a communication interface
  • the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the device may be as shown in FIG6 .
  • the device may include one or more radio frequency units, such as a remote radio unit (RRU) 610 and one or more baseband units (BBU) (also referred to as digital units, DU) 620.
  • RRU remote radio unit
  • BBU baseband units
  • the RRU 610 may be referred to as a transceiver module, which may include a transmitting module and a receiving module, or the transceiver module may be a module capable of implementing the functions of transmitting and receiving.
  • the transceiver module may correspond to the transceiver module 420 in FIG4 , that is, the transceiver module may perform the actions performed by the transceiver unit 420.
  • the transceiver module may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 611 and a radio frequency unit 612.
  • the RRU 610 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals into baseband signals.
  • the BBU 620 part is mainly used for baseband processing, controlling the base station, etc.
  • the RRU 610 and the BBU 620 may be physically arranged together or physically separated, i.e., a distributed base station. With the development of antenna technology, the RRU may also evolve into an active antenna unit (AAU).
  • AAU active antenna unit
  • the BBU 620 is the control center of the base station, which can also be called a processing module, which can correspond to the processing unit 410 in FIG. 4 and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc.
  • the processing module can perform actions performed by the processing unit 410.
  • the BBU processing module
  • the BBU620 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network of a single access standard (such as an LTE network), or may respectively support wireless access networks of different access standards (such as an LTE network, a 5G network, or other networks).
  • the BBU620 also includes a memory 621 and a processor 622.
  • the memory 621 is used to store necessary instructions and data.
  • the processor 622 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation process of the network device in the above method embodiment.
  • the memory 621 and the processor 622 can serve one or more single boards. In other words, a memory and a processor may be separately set on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be set on each single board.
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution.
  • the software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.
  • the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed by the hardware integrated logic circuit in the processor or the instructions in the form of software.
  • the above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the implementation of this application can be implemented or executed The methods, steps and logic block diagrams disclosed in the examples.
  • the general processor can be a microprocessor or the processor can also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the present application also provides a computer-readable medium on which a computer program is stored.
  • a computer program When the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disk
  • the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • the names of all nodes and messages in this application are merely names set by this application for the convenience of description. The names in the actual network may be different. It should not be understood that this application limits the names of various nodes and messages. On the contrary, any name with the same or similar function as the node or message used in this application is regarded as the method or equivalent replacement of this application, and is within the scope of protection of this application.
  • system and “network” are often used interchangeably in this article.
  • the term “and/or” in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone.
  • At least one of! or “at least one of" herein refers to all or any combination of the listed items.
  • at least one of A, B, and C may refer to the following six situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, and A, B, and C exist at the same time.
  • At least one herein refers to one or more.
  • “More than one” refers to two or more.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean determining B only according to A, but B can also be determined according to A and/or other information.
  • the terms “include”, “comprises”, “has” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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Abstract

本申请提供了一种预编码的指示方法和通信装置。该方法包括：发送第一参数和三个相位系数来确定预编码矩阵，三个相位系数用于指示任意一个非第一发送天线端口与第一个发送天线端口之间的相位差；当N1等于4，N2等于1时，令一个相位系数为1，根据该相位系数的发送天线端口与第一发送天线端口的相位差确定第一参数集合中的第一参数；当N1等于2，N2等于2时，令两个相位系数为1，根据该两个相位系数的发送天线端口与第一发送天线端口的相位差确定第一参数和第二参数；三个相位系数不同时为1。在使用Type 1 SP码本的基础上增加相位系数来校准发送天线端口之间的相位差，从而适用于天线端口初始相位不相等的情况，提升码本的性能。

Description

一种预编码的指示方法及通信装置
本申请要求于2022年11月04日提交中国国家知识产权局、申请号为202211380622.2、申请名称为“一种预编码的指示方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，并且更具体地，涉及一种预编码的指示方法及通信装置。
背景技术
第五代(the 5th generation，5G)移动通信系统对系统容量、频谱效率等方面有了更高的要求。在5G通信系统中，大规模多输入多输出(massive multiple-input multiple-output，massive-MIMO)技术的应用对提高系统的频谱效率起到了至关重要的作用。在massive-MIMO技术中，如果发送端能够获知信道的某些信息(预编码的前提条件)，就可以利用该信息对发射信号进行预处理以提高系统的传输速率和链路可靠性。
目前，在基于码本的上行传输模式中，终端设备支持的发送天线端口数最多为4。随着通信业务对上行系统容量需求越来越高，终端设备支持的发送天线端口数越来越多，可能会达到8。现有协议预定义的上行码本显然无法适配，限制了上行传输的性能。
第三代合作伙伴计划(3rd generation partnership project，3GPP)技术标准(technical specification，TS)38.214 V16.7.0的5.2.2.2.1节中的下行类型Type I单面板(single-panel,SP)码本的设计方案支持8个天线端口，可以应用于下行传输，也可以应用于上行传输。当发送端的所有天线端口的初始相位相等时，相邻天线端口之间是等相位间距的，因此基于离散傅里叶变换(discrete Fourier transform，DFT)矩阵的Type I SP码本会有较好的性能。这种特性尤其适合于网络设备的天线部署，即适用于下行传输。然而，如果发送端的不同天线端口之间物理天线系统或架构的不匹配以及射频链路硬件的不匹配，会导致不同天线端口的初始相位通常不相等，从而任意相邻天线端口之间的相位差都可能不相等，此时使用基于DFT矩阵的DL Type I SP码本会有较大的性能损失。这种情况很可能出现在小型设备(如终端设备)的天线部署中。为此，如何改善因天线端口初始相位不相等造成的性能损失是亟需解决的问题。
发明内容
本申请提供一种一种预编码的指示方法，通过预定义码字，在使用Type 1 SP码本的基础上增加相位指示字段，通过该字段可以校准发送天线端口之间的相位差，从而适用于天线端口初始相位不相等的情况，提升码本的性能。
第一方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：在N1等于4，N2等于1的情况下，确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数为1的情况下，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合用于指示预编码矩阵中的相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数；所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1，发送所述第 一信息，所述第一信息用于确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第一方面，在第一方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；
或者，在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；
在N1等于2，N2等于2的情况下，在所述第一信息中增加指示所述第三相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第一方面，在第一方面的一种可能的实施方式中，发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第一方面，在第一方面的一种可能的实施方式中，第一信息承载于下行控制信息下行控制信息(downlink control indicator，DCI)中。
结合第一方面，在第一方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第二方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：在N1等于4，N2等于1的情况下，接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；根据所述第一信息确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第二方面，在第二方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；或者，所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；在N1等于2，N2等于2的情况下，所述第一信息中增加的比特指示所述第三相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第二方面，在第二方面的一种可能的实施方式中，接收第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第二方面，在第二方面的一种可能的实施方式中，第一信息承载于下行控制信息DCI中。
结合第二方面，在第二方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第三方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：确定第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集 合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不能同时为1；所述第一信息包括比特，比特分别用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；发送所述第一信息，所述第一信息用于确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第三方面，在第三方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第三方面，在第三方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第四方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：接收第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不能同时为1；所述第一信息包括比特，比特分别用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；根据第一信息确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第四方面，在第四方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第四方面，在第四方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第五方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：确定第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不能同的情况下为1；所述第一信息包括4比特，所述4比特用于指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数；发送所述第一信息，所述第一信息用于确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第五方面，在第五方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第五方面，在第五方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第六方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：接收第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不能同的情况下为1；所述第一信息包括4比特，所述4比特用于指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数；根据所述第一信息确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相 等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第六方面，在第六方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第六方面，在第六方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第七方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：在N1等于4，N2等于1的情况下，确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，第二相位系数和第三相位系数中的任意一个为1的情况下，所述第一参数根据所述任意一个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，在所述第一相位系数，第二相位系数和第三相位系数中的任意两个为1时，所述第一参数和所述第二参数分别根据所述任意两个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数；所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1，发送所述第一信息，所述第一信息用于确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第七方面，在第七方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，当第一相位系数为1，在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，当第二相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第三相位系数，当第三相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第二相位系数，其中表示向上取整，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；
或者，在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示另外两个相位系数(除过相位系数为1的两个相位系数)；
在N1等于2，N2等于2的情况下，第一相位系数和第二相位系数为1时，在所述第一信息中增加指示所述第三相位系数；或者，第二相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第一相位系数，或者，第一相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第二相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第七方面，在第七方面的一种可能的实施方式中，发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第七方面，在第七方面的一种可能的实施方式中，第一信息承载于下行控制信息下行控制信息(downlink control indicator，DCI)中。
结合第七方面，在第七方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第八方面，提供了一种通信的方法。该方法可以由网络设备或终端设备执行，或者，也可以由配置于网络设备或终端设备中的部件(如芯片或芯片系统等)执行。
具体地，该方法包括：在N1等于4，N2等于1的情况下，接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，第二相位系数和第三相位系数中的任意一个为1 的情况下，所述第一参数根据所述任意一个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，在所述第一相位系数，第二相位系数和第三相位系数中的任意两个为1时，所述第一参数和所述第二参数分别根据所述任意两个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数；所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1，根据所述第一信息确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第八方面，在第八方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，当第一相位系数为1，在所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，当第二相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第三相位系数，当第三相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第二相位系数，其中表示向上取整，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；或者，在所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示另外两个相位系数(除过相位系数为1的两个相位系数)；在N1等于2，N2等于2的情况下，第一相位系数和第二相位系数为1时，在所述第一信息中增加指示所述第三相位系数；或者，第二相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第一相位系数，或者，第一相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第二相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第八方面，在第八方面的一种可能的实施方式中，发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第八方面，在第八方面的一种可能的实施方式中，第一信息承载于下行控制信息下行控制信息(downlink control indicator，DCI)中。
结合第八方面，在第八方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第九方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：在N1等于4，N2等于1的情况下，处理单元用于确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，处理单元用于确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
结合第九方面，在第九方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，所述处理单元具体用于在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；或者，所述处理单元具体用于在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中 的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；在N1等于2，N2等于2时，所述处理单元具体用于在所述第一信息中增加指示所述第三相位系数。
结合第九方面，在第九方面的一种可能的实施方式中，所述收发单元还用于发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第九方面，在第九方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第九方面，在第九方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：在N1等于4，N2等于1的情况下，收发单元用于接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，收发单元用于接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，在所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；处理单元，用于根据所述第一信息确定预编码矩阵。
结合第十方面，在第十方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；或者，所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；在N1等于2，N2等于2的情况下，所述第一信息中增加的比特指示所述第三相位系数。
结合第十方面，在第十方面的一种可能的实施方式中，所述收发单元还用于接收第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第十方面，在第十方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第十方面，在第十方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十一方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：处理单元，用于确定第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不同时为1，所述第一信息包括比特，比特分别用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
结合第十一方面，在第十一方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第十一方面，在第十一方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十二方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：收发单元，用于接收第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一 个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不同时为1，所述第一信息包括比特，比特分别用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；处理单元，用于根据所述第一信息确定预编码矩阵。
结合第十二方面，在第十二方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第十二方面，在第十二方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十三方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：处理单元，用于确定第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不同时为1，所述第一信息包括4比特，所述4比特用于指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数；收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
结合第十三方面，在第十三方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第十三方面，在第十三方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十四方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：收发单元，用于接收第一信息，所述第一信息包括第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数，第二相位系数和第三相位系数不同时为1，所述第一信息包括4比特，所述4比特用于指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第一相位系数、所述第二相位系数和所述第三相位系数；处理单元，用于根据所述第一信息确定预编码矩阵。
结合第十四方面，在第十四方面的一种可能的实施方式中，所述第一信息承载于下行控制信息DCI中。
结合第十四方面，在第十四方面的一种可能的实施方式中，所述第一信息承载于上行控制信息UCI中。
第十五方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：在N1等于4，N2等于1的情况下，处理单元，用于确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，第二相位系数和第三相位系数中的任意一个为1的情况下，所述第一参数根据所述任意一个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，处理单元，用于确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，在所述第一相位系数，第二相位系数和第三相位系数中的任意两个为1时，所述第一参数和所述第二参数分别根据所述 任意两个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数；所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1，收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
结合第十五方面，在第十五方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，当第一相位系数为1，在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，当第二相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第三相位系数，当第三相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第二相位系数，其中表示向上取整，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；
或者，在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示另外两个相位系数(除过相位系数为1的两个相位系数)；
在N1等于2，N2等于2的情况下，第一相位系数和第二相位系数为1时，在所述第一信息中增加指示所述第三相位系数；或者，第二相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第一相位系数，或者，第一相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第二相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第十五方面，在第十五方面的一种可能的实施方式中，发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第十五方面，在第十五方面的一种可能的实施方式中，第一信息承载于下行控制信息下行控制信息(downlink control indicator，DCI)中。
结合第十五方面，在第十五方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第十六方面，提供了一种通信的装置。该装置可以是网络设备或终端设备，或者，也可以是配置于网络设备或终端设备中的部件(如芯片或芯片系统等)。
具体地，该装置包括：在N1等于4，N2等于1的情况下，收发单元，用于接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，第二相位系数和第三相位系数中的任意一个为1的情况下，所述第一参数根据所述任意一个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，收发单元，用于接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，所述第一相位系数表示第二个发送天线端口和第一个发送天线端口间的相位差，所述第二相位系数表示第三个发送天线端口和第二个发送天线端口间的相位差，所述第三相位系数表示第四个发送天线端口和第三个发送天线端口间的相位差，在所述第一相位系数，在所述第一相位系数，第二相位系数和第三相位系数中的任意两个为1时，所述第一参数和所述第二参数分别根据所述任意两个相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数；所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1，处理单元，用于根据所述第一信息确定预编码矩阵。
根据上述技术方案，本实施例在现有协议8Tx码本的基础上增加相位指示字段，并根据相邻发送天线端口相位差来调整相关参数，从而可以相对校准发送天线端口相位差，从而改善天线端口相位差不相等导致的性能损失，适用于天线端口初始相位不相等的情况，提升码本的性能。
结合第十六方面，在第十六方面的一种可能的实施方式中，在N1等于4，N2等于1的情况下，当第一相位系数为1，在所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，当第二相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第三相位系数，当第三相位系数为1，在所述第一信息中增加比特指示所述第一相位系数和所述第二相位系数，其中表示向上取整，M1、M2和M3分别表示第一相位、第二相位和第三相位的量化精度；
或者，在所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示另外两个相位系数(除过相位系数 为1的两个相位系数)；
在N1等于2，N2等于2的情况下，第一相位系数和第二相位系数为1时，在所述第一信息中增加指示所述第三相位系数；或者，第二相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第一相位系数，或者，第一相位系数和第三相位系数为1时，在所述第一信息中增加指示所述第二相位系数。
上述技术方案中，增加的相位指示字段可以灵活指示，达到精确指示或节省开销的目的。
结合第十六方面，在第十六方面的一种可能的实施方式中，发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
结合第十六方面，在第十六方面的一种可能的实施方式中，第一信息承载于下行控制信息下行控制信息(downlink control indicator，DCI)中。
结合第十六方面，在第十六方面的一种可能的实施方式中，第一信息承载于上行控制信息UCI中。
第十七方面，提供了一种通信装置，包括用于执行第一方面至第八方面以及第一方面至第八方面中任一种可能实现方式中的方法的各个模块或单元。
第十八方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面至第第八方面以及第一方面至第第八方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片。当该通信装置为配置于终端设备中的芯片时，通信接口可以是输入/输出接口。
可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
第十九方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。处理电路用于通过输入电路接收信号，并通过输出电路发射信号，使得处理器执行上述第一方面至第第八方面以及第一方面至第第八方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第二十方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面至第第八方面以及第一方面至第第八方面中任一种可能实现方式中的方法。
可选地，处理器为一个或多个，存储器为一个或多个。
可选地，存储器可以与处理器集成在一起，或者存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第二十方面中的处理装置可以是芯片，该处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第二十一方面，提供了一种计算机程序产品，计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当计算机程序被运行时，使得计算机执行上述第一方面至第第八方面以及第一方面至第第八方面中任一种可能实现方式中的方法。
第二十二方面，提供了一种计算机可读存储介质，计算机可读存储介质存储有计算机程序(也可以 称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第第八方面以及第一方面至第第八方面中任一种可能实现方式中的方法。
第二十三方面，提供了一种通信系统，包括前述的发送端和接收端。
附图说明
图1是适用于本申请实施例提供的预编码的指示方法的通信系统的架构示意图；
图2是本申请实施例提供的预编码的指示方法的示意性流程图；
图3是本申请实施例提供的预编码的指示方法的示意性流程图；
图4是本申请实施例提供的通信装置的示意性框图；
图5是本申请实施例提供的终端设备的结构示意图；
图6是本申请实施例提供的网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(Long Term Evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th Generation，5G)移动通信系统或新无线接入技术(new radio Access Technology，NR)。其中，5G移动通信系统可以包括非独立组网(non-standalone，NSA)和/或独立组网(standalone，SA)。本申请实施例的技术方案还可以应用于未来的通信系统，如第六代移动通信系统等，本申请对此不作限定。
本申请提供的技术方案可以应用于各种通信场景，如机器类通信(machine type communication，MTC)、机器间通信长期演进技术(Long Term Evolution-machine，LTE-M)、设备到设备(device-to device，D2D)网络、机器到机器(machine to machine，M2M)网络、物联网(internet of things，IoT)网络或者其他网络。其中，IoT网络例如可以包括车联网。其中，车联网系统中的通信方式统称为车到其他设备(vehicle to X，V2X，X可以代表任何事物)，例如，该V2X可以包括：车辆到车辆(vehicle to vehicle，V2V)通信，车辆与基础设施(vehicle to infrastructure，V2I)通信、车辆与行人之间的通信(vehicle to pedestrian，V2P)或车辆与网络(vehicle to network，V2N)通信等。
本申请实施例中，网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、介质接入控制(medium access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
网络设备为小区提供服务，终端设备通过网络设备分配的传输资源(例如，频域资源，或者说，频 谱资源)与小区进行通信，该小区可以属于宏基站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
在本申请实施例中，终端设备也可以称为用户设备(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。
终端设备可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例可以为：手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑(如笔记本电脑、掌上电脑等)、移动互联网设备(mobile internet device，MID)、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(telemedicine)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、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、个人数字助理(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，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。IoT技术可以通过例如窄带(narrow band)NB技术，做到海量连接，深度覆盖，终端省电。
此外，终端设备还可以包括智能打印机、火车探测器、加油站等传感器，主要功能包括收集数据(部分终端设备)、接收网络设备的控制信息与下行数据，并发送电磁波，向网络设备传输上行数据。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例提供的方法的通信系统。图1示出了适用于本申请实施例提供的方法的通信系统100的示意图。如图所示，该通信系统100可以包括至少一个网络设备，如图1中所示的5G系统中的网络设备101；该通信系统100还可以包括至少一个终端设备，如图1中所示的终端设备102至107。其中，该终端设备102至107可以是移动的或固定的。网络设备101和终端设备102至107中的一个或多个均可以通过无线链路通信。每个网络设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备通信。例如，网络设备可以向终端设备发送配置信息，终端设备可以基于该配置信息向网络设备发送上行数据；又例如，网络设备可以向终端设备发送下行数据。又例如，网络设备可以计算出终端设备上行传输的流数和上行预编码，通过下行信息指示给终端设备。因此，图1中的网络设备101和终端设备102至107构成一个通信系统。
可选地，终端设备之间可以直接通信。例如可以利用D2D技术等实现终端设备之间的直接通信。如图中所示，终端设备105与106之间、终端设备105与107之间，可以利用D2D技术直接通信。终端设备106和终端设备107可以单独或同时与终端设备105通信。
终端设备105至107也可以分别与网络设备101通信。例如可以直接与网络设备101通信，如图中的终端设备105和106可以直接与网络设备101通信；也可以间接地与网络设备101通信，如图中的终端设备107经由终端设备106与网络设备101通信。
应理解，图1示例性地示出了一个网络设备和多个终端设备，以及各通信设备之间的通信链路。可选地，该通信系统100可以包括多个网络设备，并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，例如更多或更少的终端设备。本申请对此不做限定。
需要说明的是，通信系统100包括多个网络设备时，每个网络设备覆盖区域内的终端设备可以向任意网络设备发送上行数据，也可以向多个网络设备发送上行数据。例如，两个网络设备覆盖区域相邻区域的终端设备发送的上行数据可以由该两个网络设备中的一个接收，也可以由该两个网络设备联合接收。
上述各个通信设备，如图1中的网络设备101和终端设备102至107，可以配置多个天线。该多个天线可以包括至少一个用于发送信号的发射天线和至少一个用于接收信号的接收天线。另外，各通信设备还附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。因此，网络设备与终端设备之间可通过多天线技术通信。
可选地，该无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例不限于此。
在massive-MIMO技术中，如果发送端能够获知信道的某些信息(预编码的前提条件)，就可以利用该信息对发射信号进行预处理以提高系统的传输速率和链路可靠性，利用发送端信道状态信息对发送信号进行预处理的技术即为预编码技术。终端设备在上行传输时需要对上行传输的信息进行预编码，网络设备在下行传输时需要对下行传输的信息进行预编码，上行数据可以为诸如上行的业务数据或上行信令的数据等，下行数据可以为诸如下行的业务数据或下行信令的数据等，而在实际中进行预编码的对象还可以为任意的上行传输的信息或下行传输的信息，本申请实施例对此不做具体限定。
为便于理解本申请实施例，下面对本申请实施例中涉及到的一些技术术语做简单介绍。
(1)预编码技术
发送设备可以在已知信道状态的情况下，借助与信道状态相匹配的预编码矩阵来对待发送信号进行处理，使得经过预编码的待发送信号与信道相适配，从而使得接收设备消除信道间影响的复杂度降低。通过对待发送信号的预编码处理，接收信号质量(例如信号与干扰加噪声比(signal to interference plus noise ratio，SINR)等)得以提升。因此，采用预编码技术，可以实现发送设备与多个接收设备在相同的时频资源上传输，也就是实现了多用户多输入多输出(multiple user multiple input multiple output，MU-MIMO)。应理解，本文中有关预编码技术的相关描述仅为便于理解而示例，并非用于限制本申请实施例的保护范围。在具体实现过程中，发送设备还可以通过其他方式进行预编码。例如，在无法获知信道信息(例如但不限于信道矩阵)的情况下，采用预先设置的预编码矩阵或者加权处理方式进行预编码等。为了简洁，其具体内容本文不再赘述。
(2)发送天线端口
本申请实施例中涉及终端设备的发送天线端口，终端设备的一个或多个物理天线构成一个逻辑天线，一个发送天线端口对应一个逻辑天线的端口。终端设备的发送天线端口数可以为一个或多个，例如终端设备有2个发送天线端口、4个发送天线端口、8个发送天线端口等。
(3)终端设备的相干能力
终端设备的相干能力包括不相干(non coherent)、部分相干(partial coherent)或全相干(fully coherent)。其中，不相干指的是终端设备一个时刻只能通过多个发送天线端口中的一个天线端口发送上行数据，或者可以描述为多个发送天线端口之间不相干；部分相干指的是终端设备可以同时通过多个发送天线端口中的部分天线端口(至少两个)发送上行数据，或者可以描述为多个发送天线端口之间部分相干；完全相干指的是终端设备可以同时通过多个发送天线端口中的全部天线端口发送上行数据，或者可以描述为多个发送天线端口之间完全相干。
(4)上行传输层数
上行传输层数指的是上行数据的流数，或称为空间流数。对于空间复用来说，上行传输最大层数为MIMO信道矩阵的秩(rank)，MIMO信道矩阵的秩为对MIMO信道矩阵进行转移矩阵奇异值分解(singular value decomposition，SVD)后得到的中间的对角矩阵的对角元素(奇异值)个数。通常地，终端设备的最大上行传输层数小于或等于终端设备的发送天线端口数，终端设备实际的上行传输层数小于或等于终端设备的最大上行传输层数。示例性地，终端设备的最大上行传输层数等于终端设备的发送天线端口数，例如，终端设备的发送天线端口数为8，则终端设备的发送天线端口数对应的最大传输层数为8，终端设备的上行传输层数可以为1至8中任意一个整数。
(5)码本与码字
本申请实施例中的码本主要遵从第三代合作伙伴计划3GPP标准定义的码本，例如3GPP TS38.211协 议中定义的码本，或也可以描述为上行码本。例如，在3GPP TS 38.211的V16.7.0版本的协议中定义多种码本，每个码本中包含多个码字，同一个码本中的码字对应相同的发送天线端口数以及上行传输层数。一个码字也称为一个上行预编码矩阵。为便于理解，下表1以上行传输层数为1，发送天线端口数为4的码本为例。
表1
其中，表1示意第一行中的8个码字从左至右对应的TPMI值为0-7，第二行中的8个码字从左至右对应的TPMI值为8-15，第三行中的8个码字从左至右对应的TPMI值为16-23，第四行中的4个码字从左至右对应的TPMI值为24-27。每个码字为4×1的矩阵，即每个矩阵包括4行，表示码字对应的发送天线端口数为4；每个矩阵包括1列，表示码字对应的上行传输层数为1。
TPMI＝0-3指示的码字中非零元素仅有一个，表示这些码字对应的4个发送天线端口之间不相干，TPMI＝4-11指示的码字中部分元素为非零元素，部分元素值为0，表示这些码字对应的4个发送天线端口之间部分相干，TPMI＝12-27指示的码字中的元素均为非零元素，表示这些码字对应的4个发送天线端口之间完全相干。
(6)空域基向量
每个空域基向量对应发射端设备的一个发射波束(beam)。具体的，空域基向量可以例如但不限于是二维DFT矩阵的列向量或者过采样二维DFT矩阵的列向量，即，空域基向量可以是二维DFT向量。二维DFT向量通常可以用于描述由水平方向的波束和垂直方向的波束叠加而成的波束。空域基向量也可以是根据信道空域统计特性确定的特征向量，示例地，可以是对信道的空域统计协方差矩阵做奇异值分解(singular value decomposition，SVD)得到的特征向量，即SVD的酉矩阵的列向量等。当然本申请不限于此。
具体实现的过程中，多个空域基向量构成一个空域基向量集合，该集合可以是接收端设备和发射端设备均预先定义的，例如根据协议预先定义的，当然本申请不限于此。
应注意，在本文的描述中，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则本文描述的向量均可以理解为属于同一种形式的向量，例如行向量，或者列向量。
空域基向量的维度为N1*N2，即空域基向量包括N1*N2个元素，其中N1、N2可以分别是发射端设备在一个极化方向上的水平、垂直发射天线端口的个数。
(7)参考信号(reference signal，RS)与预编码参考信号：参考信号也可以称为导频(pilot)、参考序列等。在本申请实施例中，参考信号可以是用于信道测量的参考信号。例如，该参考信号可以是信道状态信息参考信号(channel state information reference signal，CSI-RS)、探测参考信号(sounding reference signal，SRS)等。应理解，上文列举的参考信号仅为示例，不应对本申请构成任何限定。本申 请并不排除在未来的协议中定义其他参考信号以实现相同或相似功能的可能。
预编码参考信号可以是对参考信号进行预编码后得到的参考信号。在本申请实施例中，预编码具体可以包括波束赋形(beamforming)和/或相位旋转。其中，波束赋形例如可以通过基于一个或多个角度向量对参考信号进行预编码来实现。相位旋转例如可以通过将一个或多个时延向量对参考信号进行预编码来实现。
在现有相关技术中，网络设备通常会根据终端设备发送的用于测量上行信道的参考信号，如信道探测参考信号(sounding reference signal，SRS)，估计终端设备与网络设备之间无线信道的信道状态。网络设备根据该信道状态确定终端设备使用的发送天线端口数，进而根据终端设备使用的发送天线端口数以及信道状态计算出终端设备发送上行数据时可使用的上行预编码矩阵。为了简便，网络设备计算出的上行预编码矩阵称为第二上行预编码矩阵。该第二上行预编码矩阵对应终端设备使用的发送天线端口数以及特定的上行传输层数。网络设备根据该特定的上行传输层数从前述3GPP协议预定义的码本中选择与该第二上行预编码矩阵最接近的码字，并将该码字对应的TPMI和上行传输层数指示给终端设备。其中，网络设备指示的TPMI所对应的发送天线端口数可作为终端设备发送上行数据时使用的发送天线端口数，网络设备指示的上行传输层数可作为终端设备要发送的上行数据所映射的上行传输层数。进而，终端设备按照网络设备指示的TPMI和上行传输层数确定码字，使用该码字对上行数据进行预编码，并基于该码字对应的发送天线端口以及上行传输层数发送预编码后的上行数据。
应理解，如果3GPP协议预定义的码本包含了第二上行预编码矩阵，即第二上行预编码矩阵是3GPP协议预定义的码本中的一个码字，则网络设备选择的码字与第二上行预编码矩阵一致。如果3GPP协议预定义的码本不包含第二上行预编码矩阵，即第二上行预编码矩阵不是3GPP协议预定义的码本中的一个码字，则网络设备选择的码字可以是与第二上行预编码矩阵之间的差异最小的一个码字。示例性地，差异最小可以是网络设备在3GPP协议预定义的码本中选择的码字与第二上行预编码矩阵之间的欧氏距离最小；差异最小也可以是网络设备在3GPP协议预定义的码本中选择的码字与第二上行预编码矩阵中的相同元素最多。
由上述介绍的码本可知，当前3GPP协议支持网络设备指示的码字对应最大上行传输层数为4，最大发送天线端口数为4。随着天线技术的发展，终端设备支持的发送天线端口越来越多，例如终端设备的发送天线端口数可以进一步增加到8。由此可见终端设备使用的发送天线端口数可能超出当前3GPP协议支持的码字对应的最大发送天线端口数；相应地，上行传输层数也可能超出当前3GPP协议支持的码字对应的最大传输层数。若仍然采用从当前3GPP协议预定义的码本中选择码字指示给终端设备的方式，则无法适配于更多的发送天线端口数，难以有效发挥massive-MIMO技术在终端设备的应用，从而限制上行传输的性能。
现有技术中，协议3GPP TS 38.214 V16.7.0的5.2.2.2.1节中的下行Type I单面板(single-panel,SP)码本的设计方案也可以应用于上行传输，使能发送天线端口数为8，最大上行传输层数为8的基于码本的上行传输。
Type I SP码本支持下表2所示的端口(N1,N2)和过采样因子(O1,O2)的组合，其中N1表示在同一极化的某个方向上的逻辑天线端口数，一般是指水平方向。N2表示在同一极化的另外一个方向上的逻辑天线端口数，一般是指垂直方向。O1表示N1所在方向(水平方向)的DFT过采样倍数。O2表示N2所在方向(垂直方向)的DFT过采样倍数。
表2

如果将Type I SP码本作为上行8Tx的码本，那么对应的就是上述表格中CSI-RS端口数为8的情况，存在两种(N1,N2)和(O1,O2)的配置。本申请中，CSI-RS端口数为8是针对双极化的,发射天线为双极化天线，N1*N2＝4，预编码矩阵的行数可以是(N1*N2)×2，其中2表示两个极化方向。协议3GPP TS 38.214V16.7.0中不同传输层数的码本指示如下：
1层的码本指示如下表3所示。
表3
2层的码本指示如下表4所示。
表4
3层的码本指示如下表5所示。
表5
4层的码本指示如下表6所示。
表6
5层的码本指示如下表7所示。
表7
6层的码本指示如下表8所示。
表8
7层的码本指示如下表9所示。
表9
8层的码本指示如下表10所示。
表10
其中，

示例性的，对于1层的码本，l的取值对应i1,1，m的取值对应i1,2，n的取值对应i2。
示例性的，对于2层的码本，l的取值对应i1,1，m的取值对应i1,2，l’的取值对应i1,1+k1，m’的取值对应i1,2+k2，n的取值对应i2。
当所有天线端口的初始相位相等时，相邻天线端口之间是等相位间距的，因此基于DFT矩阵的Type1 SP码本会有较好的性能。这种特性尤其适合于网络设备的天线部署，即适用于下行传输。然而，如果发送端的不同天线端口之间物理天线系统或架构不匹配，或者射频链路硬件不匹配，会导致不同天线端口的初始相位通常不相等，从而任意相邻天线端口之间的相位差都可能不相等，此时使用基于DFT矩阵的Type 1 SP码本会有较大的性能损失，这种情况很可能出现在小型设备(如终端设备)的天线部署中。
基于此，本申请实施例提供一种预编码的指示方法，通过预定义码字，在使用Type 1 SP码本的基础上增加相位指示字段，通过该字段可以校准发送天线端口之间的相位差，从而适用于天线端口初始相位不相等的情况，提升码本的性能。
需要说明的是，在本申请的描述中，“预定义”可以是指通信协议定义的，并配置于通信双方的发送端和接收端中；也可以是由网络设备确定并配置给终端设备，其中配置可以是通过信令显示配置或通过其他信息隐式配置。
在本申请的描述中，“指示”可以包括直接指示和间接指示，也可以包括显式指示和隐式指示。将某一信息(如下文所述的第一指示信息、第二指示信息)所指示的信息称为待指示信息，则具体实现过程中，对所述待指示信息进行指示的方式有很多种。例如，可以直接指示所述待指示信息，其中所述待指示信息本身或者所述待指示信息的索引等。又例如，也可以通过指示其他信息来间接指示所述待指示信息，其中该其他信息与所述待指示信息之间存在关联关系。又例如，还可以仅仅指示所述待指示信息的一部分，而所述待指示信息的其他部分则是已知、提前约定或可推导出的。另外，还可以借助预先约定(例如协议规定)的各个信息的排列顺序来实现对特定信息的指示，从而在一定程度上降低指示开销。
以下详细说明本申请实施例提供的一种预编码的指示方法。
应理解，下文仅为便于理解和说明，以终端设备与网络设备之间的交互为例详细说明本申请实施例提供的方法。但这不应对本申请提供的方法的执行主体构成任何限定。例如，下文实施例示出的终端设备可以替换为配置于终端设备中的部件(如芯片或芯片系统)等。下文实施例示出的网络设备也可以替换为配置于网络设备中的部件(如芯片或芯片系统)等。
下文示出的实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过 运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
为便于理解，下面结合图2说明现有协议中的一种预编码指示方法的过程。
S210，发送端向接收端发送参考信号。
S220，接收端向发送端发送预编码指示信息。
S230，发送端确定预编码并发送数据。
其中，参考信号用于接收端进行信道测量。
示例性的，以上行预编码为例，预编码指示信息包括上行预编码矩阵指示和上行传输层数的指示。进一步的，终端设备根据预编码指示信息确定上行预编码矩阵以及上行传输层数，从而进行上行数据的预编码。
例如，网络设备根据上行参考信号进行信道测量后，得到终端设备的上行信道信息，根据该上行信道信息计算出终端设备的上行预编码矩阵(第二上行预编码矩阵)以及上行传输层数，并将该上行预编码矩阵以及上行传输层数指示给终端设备。
图3是本申请实施例提供的预编码指示方法的示意性流程图。图3是从设备交互的角度示出的本申请实施例提供的预编码指示方法300的示意性流程图。图3示出的方法300可以包括S310至S340。下面详细说明方法300中的各步骤。
首先预定义第一码本。
具体的，第一码本用于确定预编码矩阵。当发送端是终端设备时，该预编码矩阵可以是终端设备发送上行数据时使用的上行预编码矩阵；当发送端是网络设备时，该预编码矩阵可以是网络设备发送下行数据时使用的下行预编码矩阵。下面对该第一码本的确定过程进行详细说明。
第一码本中的码字结构如下公式：







其中，
其中，表示两个向量的哈达玛(Hadamard)积。
相位因子
其中，表示1层(Rank)的码本，表示2层的码本，以此类推。
其中，vl,m可参考现有技术，例如，3GPP TS 38.214 V16.7.0的5.2.2.2.1节。
示例性的，l的取值由网络设备指示的i1,1获得，m的取值由网络设备指示的i1,2获得，n的取值由网络设备指示的i2获得，k的取值由网络设备指示的i1,3获得。
示例性的，对于1层的码本，l的取值对应i1,1，m的取值对应i1,2，n的取值对应i2。
示例性的，对于2层的码本，l的取值对应i1,1，m的取值对应i1,2，l’的取值对应i1,1+k1，m’的取值对应i1,2+k2，n的取值对应i2，k(k1，k2)的取值对应i1,3。
示例性的，对于3层的码本，l的取值对应i1,1，m的取值对应i1,2，l’的取值对应i1,1+k1，m’的取值对应i1,2+k2，n的取值对应i2，k(k1，k2)的取值对应i1,3。
示例性的，对于4层的码本，l的取值对应i1,1，m的取值对应i1,2，l’的取值对应i1,1+k1，m’的取值对应i1,2+k2，n的取值对应i2，k(k1，k2)的取值对应i1,3。
示例性的，对于5层的码本，l的取值对应i1,1，l’的取值对应i1,1+O1，l”的取值对应i1,1+O1，m的取值对应i1,2，m’的取值对应i1,2m”的取值对应i1,2+O2，n的取值对应i2。
示例性的，对于6层的码本，l的取值对应i1,1，l’的取值对应i1,1+O1，l”的取值对应i1,1+O1，m的取值对应i1,2，m’的取值对应i1,2m”的取值对应i1,2+O2，n的取值对应i2。
示例性的，对于7层的码本，N1取值为4，,N2取值为1时，l的取值对应i1,1，l’的取值对应i1,1+O1，l”的取值对应i1,1+2O1，l”’的取值对应i1,1+3O1，m的取值对应0，m’的取值对应0，m”的取值对应0，m”’的取值对应0，n的取值对应i2。N1取值和N2取值在不同配置下，参数配置不同，可参考表9，在此不再赘述。
示例性的，对于8层的码本，N1取值为4，,N2取值为1时，l的取值对应i1,1，l’的取值对应i1,1+O1，l”的取值对应i1,1+2O1，l”’的取值对应i1,1+3O1，m的取值对应0，m’的取值对应0，m”的取值对应0，m”’的取值对应0，n的取值对应i2。N1取值和N2取值在不同配置下，参数配置不同，可参考表10，在此不再赘述。
在一种可能的方式中，α1表示第二个Tx端口和第一个Tx间的相位差，α2表示第三个Tx端口和第一个Tx间的相位差，α3表示第四个Tx端口和第一个Tx间的相位差。
在另一种可能的方式中，α1表示第二个Tx端口和第一个Tx间的相位差，α2表示第三个Tx端口和第二个Tx间的相位差，α3表示第四个Tx端口和第三个Tx间的相位差。
其中，α1、α2和α3根据如下公式确定。
其中，Mi可以用于相位的量化精度。Mi可以是由网络设备配置并发送给终端设备的，例如，通过RRC消息可以发送给终端设备，也可以是协议预定的。其中，α1对应M1，α2对应M2，α3对应M3，Mi(M1，M2，M3)取值可以相同，也可以不同。本申请实施例对此不作限定。
需要说明的是，α1、α2和α3不同时为1。
应理解，本申请中，α1、α2和α3表示的相位差为实际相位差，一种可选的理解，假设有两个发射天线端口，由于两个发射天线端口所对应的天线阵子的物理位置不同，从而信号传输的路程不同，导致这两个天线端口之间有相位差，记为δ；假设第一个天线端口的初始相位为第二个天线端口的初始相位为φ2，这两个天线端口之间的实际相位差应为
S310，接收端向发送端发送第一配置信息，对应地，发送端接收来自接收端的该第一配置信息。
第一配置信息用于指示端口数为8时天线端口的配置情况。
具体的，第一配置信息包括N1和N2，或用于指示N1和N2的信息。
示例性的，端口数为8时，天线端口的配置情况(N1，N2)有两种，一种是(2，2)，另一种是(4，1)。
示例性的，接收端是终端设备时，第一配置信息用于指示CSI-RS端口数为8时天线端口的配置情况。
示例性的，接收端是网络设备时，第一配置信息用于指示SRS端口数为8时天线端口的配置情况。
应理解，该步骤为可选的步骤，例如，N1和N2为协议预定义的配置，发送端可以根据协议预定义的配置直接获取N1和N2的配置情况。
如果接收端是网络设备，网络设备例如可以通过高层信令来携带该第一配置信息，该高层信令例如可以包括RRC消息、MAC-CE等，携带该配置信息。网络设备也可以通过物理层信令来携带该配置信息，该物理层信令例如可以包括DCI等。本申请对用于携带该配置信息的具体信令不作限定。
S320，发送端向接收端发送参考信号。
其中，参考信号用于进行信道估计和信道测量。
具体的，如果是上行参考信号，例如，发送端是终端设备，接收端是网络设备，该参考信号例如，SRS。
具体的，如果是下行参考信号，例如，发送端是网络设备，接收端是终端设备，该参考信号例如，CRS或CSI-RS。
接收端根据参考信号估计和接收端之间无线信道的信道状态，接收端根据该信道状态可以确定接收端使用的发送天线端口数，进而根据该发送天线端口数以及信道状态计算出发送端发送数据时可使用的预编码矩阵，为了简便，接收端计算出的预编码矩阵称为第二预编码矩阵。
S330，接收端根据第一码本生成第一信息。
其中，第一信息包括第一参数集合和第一相位系数集合。
当传输层数为1、5、6、7或8时，第一参数集合包括第一参数，第二参数和第三参数，其中，第一参数可以是l的取值，第二参数可以是m的取值，第三参数可以是n的取值。
当传输层数为2、3或4时，第一参数集合包括第一参数，第二参数，第三参数和第四参数，其中，第一参数可以是l的取值，第二参数可以是m的取值，第三参数可以是n的取值，第四参数可以是k的取值。
第一相位系数集合包括第一相位系数、第二相位系数和第三相位系数。
其中，第一相位系数用于指示α1，第二相位系数用于指示α2，第三相位系数用于指示α3。
需要说明的是，α1、α2和α3不同时为1。
具体的，接收端根据参考信号估计信道状态。对于获取的信道状态，接收端基于上述第一码本，确定第一参数集合和第一相位系数集合，该第一参数集合和第一相位系数集合使得基于上述第一码本的预编码会有较好的性能。
应理解，发送端不同天线端口初始相位不相等，可能导致性能损失。在本申请实施例中，接收端基于第一码本确定合适参数配置来对不同天线端口的相位进行校准，通过计算可以确定出性能相对较好的参数配置，并将该配置指示给发送端用来进行预编码。
示例性的，如果是下行传输，网络设备可以通过DCI发送第一信息。
示例性的，如果是上行传输，终端设备可以通过UCI发送第一信息。
本申请中，第一信息用于发送端确定预编码矩阵。
可选的，发送端根据第一信息确定预编码矩阵。进一步地，发送端根据该预编码矩阵对数据进行预编码后发送。
本申请中，接收端向发送端指示第一信息的方式有三种。以下进行详细说明。
方式一：
在N1取值为4，N2取值为1的情况下，令α1、α2和α3中的任意一个为1，根据任意两个端口之间的相位差确定第一参数l的取值，接收端向发送端指示α1、α2和α3中的另外两个和第一参数l的取值。
本申请中，当N1取值为4，N2取值为1时，代入公式可得任意相邻天线端口间的相位差为由此可见，任意相邻天线端口间的相位差可以通过第一参数l的取值调整。
在该情况下，接收端可以只需要向发送端指示第一参数l的取值和α1、α2和α3中的其中两个。
α1、α2和α3中的其中两个可以通过两种方法指示。
在第一信息中增加或 比特来分别指示α1、α2和α3中的其中两个，其中表示向上取整。
方法二，联合指示，在第一信息中增加4比特指示上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字作为α1、α2和α3中的其中两个。
上行传输层数为1且发送天线端口数为4的全相干码本的码字可参考表1中TPMI为12-27的码字。
在N1取值为2，N2取值为2的情况下，令α1、α2和α3中的任意两个为1，根据任意两个端口之间的相位确定第一参数l的取值和第二参数m的取值，接收端向发送端指示α1、α2和α3中的另外一个和l、m的取值。
本申请中，当N1取值为2，N2取值为2时，代入公式可得天线端口1和2之间的相位差为天线端口2和3之间的相位差为天线端口3和4之间的相位差为任意相邻天线端口间的相位差可以通过l和m的取值调整。
在该情况下，接收端可以只需要向发送端指示l和m的取值以及α1、α2和α3中的其中一个。
α1、α2和α3中的其中一个可以通过上述方法一类似的方式来指示。
方式二：
接收端选择出第一参数，第二参数，第三参数(Rank取2、3或4时还包括第四参数)指示给发送端，本申请实施例对此不作限定。
接收端向发送端指示第一相位系数集合α1、α2和α3时，可以在第一信息中增加比特来分别指示α1、α2和α3。
本申请中，相位系数可以用第一信息中的任意一个值域来指示。
示例性的，对于下行传输，可以在DCI中增加比特来指示α1，增加比特来指示α2，增加比特来指示α3。
方式三：
接收端选择出第一参数，第二参数，第三参数(Rank取2、3或4时还包括第四参数)指示给发送端，本申请实施例对此不作限定。
接收端向发送端指示第一相位系数集合α1、α2和α3时，可以采用联合指示的方式，在第一信息中增加4比特指示上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字作为α1、α2和α3。
上行传输层数为1且发送天线端口数为4的全相干码本的码字可参考表1中TPMI为12-27的码字。
S340，接收端向发送端发送第一信息。
S350，根据第一信息确定预编码矩阵。
具体的，如果发送端是终端设备，根据第一信息确定上行预编码矩阵。
具体的，如果发送端是网络设备，根据第一信息确定下行预编码矩阵。
根据上述技术方案，通过预定义码字，在使用Type 1 SP码本的基础上增加相位指示字段，通过该字段可以校准发送天线端口之间的相位差，从而适用于天线端口初始相位不相等的情况，提升码本的性能。
图4是本申请实施例提供的通信装置的示意性框图。如图4所示，该通信装置400包括收发单元420和处理单元410，其中，收发单元420可以用于实现相应的通信功能，处理单元410可以用于进行数据处理。
可选地，收发单元420还可以称为通信接口或通信单元，包括发送单元和/或接收单元。该收发单元420可以是收发器(包括发射器和/或接收器)、输入/输出接口(包括输入和/或输出接口)、管脚或电路等。该收发单元420可以用于执行上述方法实施例中发送和/或接收的步骤。
可选地，该处理单元410可以是处理器(可以包括一个多个)、具有处理器功能的处理电路等，可以用于执行上述方法实施例中除发送接收外的其它步骤。
可选地，该装置400还包括存储单元，该存储单元可以是存储器、内部存储单元(例如，寄存器、缓存等)、外部的存储单元(例如，只读存储器、随机存取存储器等)等。该存储单元用于存储指令，上述处理单元410执行该存储单元所存储的指令，以使该通信装置执行上述方法。
一种设计中，该装置400可以用于执行上文各个方法实施例中发送端所执行的动作，如该装置400 可以用于执行上文方法300中的发送端所执行的动作。这时，该装置400可以为网络设备或终端设备的组成部件，收发单元420用于执行上文方法发送端的收发相关的操作，处理单元410用于执行上文方法实施例中发送端的处理相关的操作。
具体的，处理单元410，在N1等于4，N2等于1的情况下，用于确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，用于确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
应理解，收发单元420以及处理单元410还可以执行上述方法300中由发送端所执行的其他操作，这里不再一一详述。
一种设计中，该装置400可以用于执行上文各个方法实施例中接收端所执行的动作，如该装置400可以用于执行上文方法300中的接收端所执行的动作。这时，该装置400可以为接收端的组成部件，收发单元420用于执行上文方法接收端的收发相关的操作，处理单元410用于执行上文方法实施例中接收端的处理相关的操作。
具体的，收发单元420，在N1等于4，N2等于1的情况下，用于接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；在N1等于2，N2等于2的情况下，用于接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；处理单元410，用于根据所述第一信息确定预编码矩阵。
应理解，收发单元420以及处理单元410还可以执行上述方法300中由接收端所执行的其他操作，这里不再一一详述。
还应理解，这里的装置400以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置400可以具体为上述实施例中的网络设备，可以用于执行上述各方法实施例中与网络设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的装置400具有实现上述方法中的终端设备所执行的相应步骤的功能，或者，上述各个方案的装置400具有实现上述方法中网络设备所执行的相应步骤的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块；例如收发模块可以由收发机替代(例如，收发模块中的发送单元可以由发送机替代，收发模块中的接收单元可以由接收机替代)，其它单元，如处理模块等可以由处理器替代，分别执行各个方法实施例中的收发操作以 及相关的处理操作。
此外，上述收发单元420还可以是收发电路(例如可以包括接收电路和发送电路)，处理模块可以是处理电路。
需要指出的是，图4中的装置可以是前述实施例中的网元或设备，也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。其中，收发模块可以是输入输出电路、通信接口；处理模块为该芯片上集成的处理器或者微处理器或者集成电路。在此不做限定。
图5是本申请实施例提供的一种通信架构的示意图。图5所示的通信装置500包括：处理器510、存储器520和收发器530。该处理器510与存储器520耦合，用于执行存储器520中存储的指令，以控制收发器530发送信号和/或接收信号。
应理解，上述处理器510和存储器520可以合成一个处理装置，处理器510用于执行存储器520中存储的程序代码来实现上述功能。具体实现时，该存储器520也可以集成在处理器510中，或者独立于处理器510。应理解，处理器510也可以和前面通信装置中的各个处理单元相对应，收发器530可以和前面通信装置中的各个接收单元和发送单元相对应。
还应理解，收发器530可以包括接收器(或者称，接收机)和发射器(或者称，发射机)。收发器还可以进一步包括天线，天线的数量可以为一个或多个。收发器还可以是通信接口或者接口电路。
具体地，该通信装置500可对应于根据本申请实施例的方法700和方法800中的终端设备和网络设备。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
当该通信装置500为芯片时，该芯片包括接口单元和处理单元。其中，接口单元可以是输入输出电路或通信接口；处理单元可以为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例中的装置为网络设备时，该装置可以如图6所示。该装置可包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)610和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)620。所述RRU610可以称为收发模块，该收发模块可以包括发送模块和接收模块，或者，该收发模块可以是一个能够实现发送和接收功能的模块。该收发模块可以与图4中的收发模单元420对应，即可由收发模块执行由收发单元420执行的动作。可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线611和射频单元612。该RRU 610部分主要用于射频信号的收发以及射频信号与基带信号的转换。该BBU 620部分主要用于进行基带处理，对基站进行控制等。该RRU610与BBU 620可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。其中，随着天线技术的发展RRU也可以演进为有源天线处理单元(active antenna unit，AAU)。
该BBU 620为基站的控制中心，也可以称为处理模块，可以与图4中的处理单元410对应，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等，此外，可由处理模块执行由处理单元410执行的动作。例如该BBU(处理模块)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程。
在一个示例中，该BBU620可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网络)，也可以分别支持不同接入制式的无线接入网(如LTE网络，5G网络或其他网络)。该BBU620还包括存储器621和处理器622。该存储器621用以存储必要的指令和数据。该处理器622用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。该存储器621和处理器622可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以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(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。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。
本申请还提供了一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
在本申请实施例中，“示例的”、“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
应理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
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。本申请中所有节点、消息的名称仅仅是本申请为描述方便而设定的名称，在实际网络中的名称可能不同，不应理解本申请限定各种节点、消息的名称，相反，任何具有和本申请中用到的节点或消息具有相同或类似功能的名称都视作本申请的方法或等效替换，都在本申请的保护范围之内。
还应理解，在本申请中，“当…时”、“若”以及“如果”均指在某种客观情况下UE或者基站会做出相应的处理，并非是限定时间，且也不要求UE或基站实现时一定要有判断的动作，也不意味着存在其它限定。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
本文中术语“……中的至少一个”或“……中的至少一种”，表示所列出的各项的全部或任意组合，例如，“A、B和C中的至少一种”，可以表示：单独存在A，单独存在B，单独存在C，同时存在A和B，同时存在B和C，同时存在A、B和C这六种情况。本文中的“至少一个”表示一个或者多个。“多个”表示两个或者两个以上。
应理解，在本申请各实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
应理解，在本申请的各种实施例中，第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的信息等。
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。
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，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，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。
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。
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处理单元中，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。
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。
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以所述权利要求的保护范围为准。

Claims (24)

  1. 一种预编码的指示方法，其特征在于，包括：
    在N1等于4，N2等于1的情况下，确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数、第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；
    在N1等于2，N2等于2的情况下，确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数均为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，所述N1和所述N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；
    发送所述第一信息，所述第一信息用于确定预编码矩阵。
  2. 根据权利要求1所述的方法，其特征在于，发送所述第一信息，包括：
    在N1等于4，N2等于1的情况下，在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；
    或者，在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；
    在N1等于2，N2等于2的情况下，在所述第一信息中增加指示所述第三相位系数。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
  4. 根据权利要求1或2所述的方法，其特征在于，所述第一信息承载于下行控制信息DCI中。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第一信息承载于上行控制信息UCI中。
  6. 一种预编码的指示方法，其特征在于，包括：
    在N1等于4，N2等于1的情况下，接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；
    在N1等于2，N2等于2的情况下，接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；
    根据所述第一信息确定预编码矩阵。
  7. 根据权利要求6所述的方法，其特征在于，接收所述第一信息，包括：
    在N1等于4，N2等于1的情况下，所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；
    或者，所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天 线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；
    在N1等于2，N2等于2的情况下，所述第一信息中增加的比特指示所述第三相位系数。
  8. 根据权利要求6或7所述的方法，其特征在于，所述方法还包括：
    接收第一配置信息，所述第一配置信息包括所述N1和所述N2。
  9. 根据权利要求6或7所述的方法，其特征在于，所述第一信息承载于下行控制信息DCI中。
  10. 根据权利要求6或7所述的方法，其特征在于，所述第一信息承载于上行控制信息UCI中。
  11. 一种通信装置，其特征在于，包括：
    在N1等于4，N2等于1的情况下，处理单元用于确定第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；
    在N1等于2，N2等于2的情况下，处理单元用于确定第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意两个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；
    收发单元，用于发送所述第一信息，所述第一信息用于确定预编码矩阵。
  12. 根据权利要求11所述的装置，其特征在于，在N1等于4，N2等于1的情况下，所述处理单元具体用于在所述第一信息中增加比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；
    或者，所述处理单元具体用于在所述第一信息中增加4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；
    在N1等于2，N2等于2的情况下，所述处理单元具体用于在所述第一信息中增加指示所述第三相位系数。
  13. 根据权利要求11或12所述的装置，其特征在于，所述收发单元还用于发送第一配置信息，所述第一配置信息包括所述N1和所述N2。
  14. 根据权利要求11或12所述的装置，其特征在于，所述第一信息承载于下行控制信息DCI中。
  15. 根据权利要求11或12所述的装置，其特征在于，所述第一信息承载于上行控制信息UCI中。
  16. 一种通信装置，其特征在于，包括：
    在N1等于4，N2等于1的情况下，收发单元用于接收第一信息，所述第一信息包括第一参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定；
    在N1等于2，N2等于2的情况下，收发单元用于接收第一信息，所述第一信息包括第一参数、第二参数和第一相位系数集合，所述第一相位系数集合中的一个相位系数用于指示预编码矩阵对应的任意一个非第一个发送天线端口与第一个发送天线端口之间的相位差，所述第一相位系数集合包括第一相位系数，第二相位系数和第三相位系数，当所述第一相位系数和所述第二相位系数为1时，所述第一参数根据所述第一相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，所述第二参数根据所述第二相位系数对应的发送天线端口与所述第一发送天线端口之间的相位差确定，其中，N1和N2分别表示发送端发送天线水平方向和垂直方向的端口数，所述第一相位系数、所述第二相位系数和所述第三相位系数不同时为1；
    处理单元，用于根据所述第一信息确定预编码矩阵。
  17. 根据权利要求16所述的装置，其特征在于，
    在N1等于4，N2等于1的情况下，所述第一信息中增加的比特指示所述第二相位系数和所述第三相位系数，其中表示向上取整，M2和M3分别表示第二相位和第三相位的量化精度；
    或者，所述第一信息中增加的4比特来指示第一码字，所述第一码字是上行传输层数为1且发送天线端口数为4的全相干码本中的一个码字，所述第一码字用来指示所述第二相位系数和所述第三相位系数；
    在当N1等于2，N2等于2的情况下，所述第一信息中增加的比特指示所述第三相位系数。
  18. 根据权利要求16或17所述的装置，其特征在于，所述收发单元还用于接收第一配置信息，所述第一配置信息包括所述N1和所述N2。
  19. 根据权利要求16或17所述的装置，其特征在于，所述第一信息承载于下行控制信息DCI中。
  20. 根据权利要求16或17所述的装置，其特征在于，所述第一信息承载于上行控制信息UCI中。
  21. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，所述存储器用于存储计算机程序或指令，所述处理器用于执行存储器中的所述计算机程序或指令，使得所述装置执行如权利要求1至5中任一项所述的方法，或执行如权利要求6至10中任一项所述的方法。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得所述计算机执行如权利要求1至5中任一项所述的方法；或，如权利要求6至10中任一项所述的方法。
  23. 一种芯片系统，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片系统的通信设备执行权利要求1至5中任一项所述的方法，或执行如权利要求6至10中任一项所述的方法。
  24. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得计算机执行如权利要求1至5中任一项所述的方法的步骤，或执行如权利要求6至10中任一项所述的方法的步骤。
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