WO2022253169A1 - 通信处理方法和通信处理装置 - Google Patents

通信处理方法和通信处理装置 Download PDF

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Publication number
WO2022253169A1
WO2022253169A1 PCT/CN2022/095911 CN2022095911W WO2022253169A1 WO 2022253169 A1 WO2022253169 A1 WO 2022253169A1 CN 2022095911 W CN2022095911 W CN 2022095911W WO 2022253169 A1 WO2022253169 A1 WO 2022253169A1
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Prior art keywords
precoding matrix
bandwidth
terminal device
uplink precoding
uplink
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PCT/CN2022/095911
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English (en)
French (fr)
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杭海存
王潇涵
金黄平
王瀚庆
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华为技术有限公司
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Publication of WO2022253169A1 publication Critical patent/WO2022253169A1/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
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals

Definitions

  • the present application relates to the technical field of communication, and in particular, to a communication processing method and a communication processing device.
  • the network With the full commercialization of the 5th generation mobile communication technology (5G), in addition to meeting the growing demand for large-bandwidth mobile Internet, the network also needs to be combined with multiple services in vertical industries. For example, the network needs to meet the needs of industrial manufacturing, transportation, energy, education, medical and other industry applications.
  • the rich application scenarios of the industry put forward higher requirements on the performance of 5G networks (for example, the uplink capacity of 5G networks and the uplink coverage of 5G networks).
  • currently provided uplink transmission methods mainly include codebook-based uplink transmission and non-codebook-based uplink transmission.
  • a terminal device sends a sounding reference signal (sounding reference signal, SRS), and the base station estimates an uplink channel according to the SRS.
  • the base station determines an expected uplink precoding matrix corresponding to each subband of each terminal device according to uplink channels of multiple terminal devices.
  • the base station sends beamforming channel state information reference signaling (BF CSI-RS).
  • BF CSI-RS beamforming channel state information reference signaling
  • the terminal device receives the BF CSI-RS, and determines the uplink precoding matrix of the terminal device on the corresponding subband according to the BF CSI-RS.
  • the base station indicates the uplink precoding matrix of the terminal equipment through the BF CSI-RS. Since the air interface indication method will be affected by noise and interference, etc., the accuracy of the uplink precoding matrix estimated by the terminal equipment through BF CSI-RS is low, which affects the performance of the communication system.
  • the embodiments of the present application provide a communication processing method and a communication processing device, which are used to improve the accuracy of the third uplink precoding matrix determined by the terminal equipment, and improve the performance of the communication system.
  • the first aspect of the embodiment of the present application provides a communication processing method, the method includes:
  • the terminal device determines the first uplink precoding matrix of the first bandwidth.
  • the terminal device receives the BF CSI-RS sent by the network device on the second bandwidth, where the second bandwidth is a subset of the first bandwidth.
  • the terminal device obtains the differential precoding matrix of the terminal device on the second bandwidth based on the BF CSI-RS.
  • the terminal device determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix.
  • the terminal device may determine the first uplink precoding matrix through a signaling instruction from the network device. Therefore, the first uplink precoding matrix determined by the terminal device is accurate.
  • the terminal device jointly determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix. Therefore, the noise resistance of the air interface is improved, and the accuracy of the third uplink precoding matrix determined by the terminal equipment is improved, thereby improving the performance of the communication system.
  • the terminal device determines the first uplink precoding matrix of the first bandwidth, including: the terminal device receives downlink control information (downlink control information, DCI) from the network device, and the DCI is used to indicate the first uplink precoding matrix encoding matrix.
  • downlink control information downlink control information, DCI
  • the network device sends DCI to the terminal device, which is used to indicate the first uplink precoding matrix to the terminal device.
  • the first uplink precoding matrix obtained by the terminal device through DCI is accurate. It is beneficial for the terminal device to determine an accurate third uplink precoding matrix according to the first uplink precoding matrix and the differential precoding matrix. Therefore, the precision of the third uplink precoding matrix is improved, thereby improving the performance of the communication system.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the network device can indicate the first uplink precoding matrix to the terminal device through the index of the codeword.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the terminal device is based on the BF
  • the CSI-RS obtains the differential precoding matrix of the terminal device on the second bandwidth, including: the terminal device measures the BF CSI-RS to obtain H DL_i *P DL_i ; H DL_i represents the downlink channel information of the i-th frequency domain unit, and the downlink The channel is the downlink channel between the network device and the terminal device on the i-th frequency domain unit estimated by the terminal device; P DL_i is the downlink beam weight P DL_i used by the network device to send BF CSI-RS estimated by the terminal device; the terminal The device determines the differential precoding matrix ⁇ P UL_i according to H DL_i *P DL_i .
  • the terminal device determines the differential precoding matrix on the second bandwidth according to the BFCSI-RS.
  • a specific implementation manner for the terminal device to determine the differential precoding matrix on the second bandwidth is provided, which provides a basis for the implementation of the solution.
  • the second bandwidth is the ith frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • An uplink precoding matrix and a differential precoding matrix determine a third uplink precoding matrix of the terminal device on the second bandwidth, including: the terminal device determines the third uplink precoding matrix according to the following method;
  • the above implementation manner provides a specific implementation manner of the relationship among the first uplink precoding matrix, the differential precoding matrix and the third uplink precoding matrix, improves the feasibility of the scheme, and provides a basis for the implementation of the scheme.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • the above implementation manner provides another specific implementation manner of the relationship among the first uplink precoding matrix, the differential precoding matrix and the third uplink precoding matrix, which improves the feasibility and diversity of the solution.
  • the method further includes: the terminal device receives first indication information from the network device, where the first indication information is used to instruct the terminal device to adopt a differential codebook mode.
  • the network device may indicate the differential codebook mode to the terminal device.
  • the terminal device can determine the third uplink precoding matrix on the second bandwidth by using the differential codebook mode. Therefore, the precision of the third uplink precoding matrix is improved, and the performance of the communication system is improved.
  • the method further includes: the terminal device receives first indication information from the network device, and the first indication information is used for the terminal device to enable a differential codebook function.
  • the terminal device may enable the differential codebook function. Then the terminal device may determine to use the differential codebook mode to determine the third uplink precoding matrix on the second bandwidth. Therefore, the precision of the third uplink precoding matrix is improved, and the performance of the communication system is improved. Secondly, another scheme for indicating the differential codebook mode is provided in the above implementation manner, which improves the diversity of schemes.
  • the second aspect of the embodiment of the present application provides a communication processing method, the method includes:
  • the network device sends second indication information to the terminal device, where the second indication information is used to indicate the first uplink precoding matrix of the first bandwidth; the network device determines the The expected differential precoding matrix on the second bandwidth, the second uplink precoding matrix is the expected uplink precoding matrix of the terminal device on the second bandwidth, and the second bandwidth is a subset of the first bandwidth; the network device according to the expected differential precoding matrix Determine the first downlink beam weight; the network device generates BF CSI-RS according to the first downlink beam weight; the network device sends BF CSI-RS to the terminal device on the second bandwidth, and the BF CSI-RS is used for terminal device estimation Desired differential precoding matrix.
  • the network device sends the second indication information to the terminal device to indicate the first uplink precoding matrix of the first bandwidth. Then, the first uplink precoding matrix determined by the terminal device is accurate.
  • the network device determines the first downlink beam weight according to the expected differential precoding matrix; the network device generates the BF CSI-RS according to the first downlink beam weight; the network device sends the BF CSI-RS to the terminal device on the second bandwidth, and the BF
  • the CSI-RS is used by the terminal equipment to estimate the desired differential precoding matrix.
  • the terminal device may determine the first uplink precoding matrix and the differential precoding matrix on the second bandwidth, so that the terminal device determines the third uplink precoding matrix on the second bandwidth. Therefore, the noise resistance of the air interface is improved, the accuracy of the third uplink precoding matrix determined by the terminal equipment is improved, and the performance of the communication system is improved.
  • the network device sending the second indication information to the terminal device includes: the network device sending DCI to the terminal device, where the DCI is used to indicate the first uplink precoding matrix.
  • a specific bearer of the second indication information is provided to provide a basis for implementation of the solution.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the network device can indicate the first uplink precoding matrix to the terminal device through the index of the codeword.
  • the second bandwidth is the ith frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • the network device according to the first An uplink precoding matrix and a second uplink precoding matrix determine the expected differential precoding matrix of the terminal device on the second bandwidth, including: the network device determines the differential precoding matrix on the second bandwidth according to the following method;
  • ⁇ P UL_i g(P WB -P UL_i ), ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, g(P WB -P UL_i ) means Perform normalization processing on P WB -P UL_i .
  • the above implementation provides a specific implementation of the relationship between the desired differential precoding matrix, the first uplink precoding matrix and the second uplink precoding matrix, which provides a basis for the implementation of the solution and is conducive to the implementation of the solution.
  • the second bandwidth is the ith frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • the network device according to the first An uplink precoding matrix and a second uplink precoding matrix determine the expected differential precoding matrix of the terminal device on the second bandwidth, including: the network device determines the differential precoding matrix on the second bandwidth according to the following method;
  • ⁇ P UL_i ⁇ *P UL_i -P WB ; ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, and ⁇ is a real number. Through the adjustment of ⁇ , ⁇ P UL_i is normalized.
  • the above implementation provides another specific implementation of the relationship between the desired differential precoding matrix, the first uplink precoding matrix, and the second uplink precoding matrix, which provides a basis for the implementation of the scheme, and is conducive to the implementation of the scheme and Program diversity.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • the differential precoding matrix determines the first downlink beam weight, including: the terminal device determines the first downlink beam weight according to the following method;
  • H DL_i *P DL_i ⁇ P UL_i
  • H DL_i represents downlink channel information
  • the downlink channel information is the downlink channel between the terminal device on the i-th frequency domain unit between the network device and the terminal device
  • P DL_i is the first downlink channel Beam weight
  • ⁇ P UL_i is the desired differential precoding matrix.
  • the specific determination method of the first downlink beam weight is shown, so that the terminal device can determine the differential precoding matrix of the second bandwidth through the BF CSI-RS on the second bandwidth, thereby facilitating the terminal device Combining the differential precoding matrix of the second bandwidth and the first uplink precoding matrix to determine a third uplink precoding matrix of the second bandwidth.
  • the terminal device can determine the differential precoding matrix of the second bandwidth through the BF CSI-RS on the second bandwidth, thereby facilitating the terminal device Combining the differential precoding matrix of the second bandwidth and the first uplink precoding matrix to determine a third uplink precoding matrix of the second bandwidth.
  • the method further includes: the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to adopt a differential codebook mode.
  • the network device may indicate the differential codebook mode to the terminal device.
  • the terminal device can determine the third uplink precoding matrix on the second bandwidth by using the differential codebook mode. Therefore, the precision of the third uplink precoding matrix is improved, and the performance of the communication system is improved.
  • the method further includes: the network device sending first indication information to the terminal device, where the first indication information is used to enable the terminal device to enable a differential codebook function.
  • the network device may enable the differential codebook function for the terminal device.
  • the terminal device in the codebook-based mode, the terminal device can enable the differential codebook function.
  • the terminal device may determine to use the differential codebook mode to determine the third uplink precoding matrix on the second bandwidth. Therefore, the precision of the third uplink precoding matrix is improved, and the performance of the communication system is improved.
  • another scheme for indicating the differential codebook mode is provided in the above implementation manner, which improves the diversity of schemes.
  • the third aspect of the embodiment of the present application provides a communication processing device, and the communication processing device includes:
  • a processing module configured to determine a first uplink precoding matrix of a first bandwidth
  • a transceiver module configured to receive the BF CSI-RS sent by the network device on the second bandwidth, where the second bandwidth is a subset of the first bandwidth
  • the processing module is used to obtain the differential precoding matrix of the communication processing device on the second bandwidth based on the BF CSI-RS; determine the third uplink of the communication processing device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix precoding matrix.
  • the processing module is specifically used for:
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • the processing module is used specifically for:
  • H DL_i represents the downlink channel of the i-th frequency domain unit, and the downlink channel is estimated by the communication processing device between the network device on the i-th frequency domain unit and the communication processing device
  • P DL_i is the downlink beam weight P DL_i used by the communication processing device to estimate the BF CSI-RS sent by the network equipment; determine the differential precoding matrix ⁇ P UL_i according to H DL_i *P DL_i .
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module specifically uses In: determining the third uplink precoding matrix according to the following method;
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module Specifically used for: determining the third uplink precoding matrix according to the following manner;
  • the transceiver module is also used for:
  • the first instruction information from the network device is received, where the first instruction information is used to instruct the communication processing apparatus to adopt a differential codebook mode.
  • the transceiver module is also used for:
  • the first instruction information from the network device is received, where the first instruction information is used to instruct the communication processing device to enable the differential codebook function.
  • the fourth aspect of the embodiment of the present application provides a communication processing device, and the communication processing device includes:
  • a transceiver module configured to send second indication information to the terminal device, where the second indication information is used to indicate the first uplink precoding matrix of the first bandwidth;
  • a processing module configured to determine an expected differential precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the second uplink precoding matrix, and the second uplink precoding matrix is the expected differential precoding matrix of the terminal device on the second bandwidth
  • the uplink precoding matrix, the second bandwidth is a subset of the first bandwidth;
  • the first downlink beam weight is determined according to the expected differential precoding matrix;
  • the BF CSI-RS is generated according to the first downlink beam weight; on the second bandwidth Send the BF CSI-RS to the terminal equipment, and the BF CSI-RS is used for the terminal equipment to estimate the desired differential precoding matrix.
  • the transceiver module is specifically configured to: send DCI to the terminal device, where the DCI is used to indicate the first uplink precoding matrix.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module specifically uses In: determining the differential precoding matrix on the second bandwidth according to the following manner;
  • ⁇ P UL_i g(P WB -P UL_i ), ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, g(P WB -P UL_i ) means Perform normalization processing on P WB -P UL_i .
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module specifically uses In: determining the differential precoding matrix on the second bandwidth according to the following manner;
  • ⁇ P UL_i ⁇ *P UL_i -P WB ; ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, and ⁇ is a real number. Through the adjustment of ⁇ , ⁇ P UL_i is normalized.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module specifically uses In: determining the first downlink beam weight on the second bandwidth according to the following manner;
  • H DL_i *P DL_i ⁇ P UL_i
  • H DL_i represents the information of the downlink channel
  • the information of the downlink channel is the downlink channel between the terminal equipment on the i-th frequency domain unit and the communication processing device to the terminal equipment
  • P DL_i is the first downlink channel Row beam weight
  • ⁇ P UL_i is the desired differential precoding matrix.
  • the transceiver module is further configured to: send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to adopt the differential codebook mode.
  • the transceiver module is further configured to: send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to enable the differential codebook function.
  • a fifth aspect of the embodiment of the present application provides a communication processing device, where the communication processing device includes: a processor and a memory.
  • a computer program is stored in the memory, and the processor is further configured to invoke and run the computer program stored in the memory, so that the processor implements any one of the implementation manners in the first aspect.
  • the communication processing apparatus includes a transceiver; the processor is configured to control the transceiver to execute any one of the implementation manners in the first aspect.
  • a sixth aspect of the embodiments of the present application provides a communication processing device, where the communication processing device includes: a processor and a memory.
  • a computer program is stored in the memory, and the processor is further configured to call and run the computer program stored in the memory, so that the processor implements any one of the implementation manners in the second aspect.
  • the communication processing apparatus includes a transceiver; the processor is configured to control the transceiver to execute any one of the implementation manners in the second aspect.
  • the seventh aspect of the embodiments of the present application provides a computer program product including computer instructions, which is characterized in that, when the program is run on a computer, the computer executes the implementation of any one of the first aspect or the second aspect.
  • the eighth aspect of the embodiments of the present application provides a computer-readable storage medium, including computer instructions, and when the computer instructions are run on the computer, the computer executes any one of the implementation manners of the first aspect or the second aspect.
  • the ninth aspect of the embodiment of the present application provides a communication device, the communication device includes entities such as network equipment, terminal equipment, or chips, and the communication device includes a processor, which is used to call a computer program in the memory, so that the processor executes the above-mentioned first aspect Or any implementation in the second aspect.
  • the processor is coupled to the memory through an interface.
  • a tenth aspect of the embodiment of the present application provides a communication system, and the communication system includes the communication processing device according to the third aspect and the communication processing device according to the fourth aspect.
  • the eleventh aspect of the embodiment of the present application provides a chip, including a processor, configured to be connected to a memory, and call a program stored in the memory, so that the processor executes any one of the above-mentioned first aspect or second aspect Method to realize.
  • the terminal device determines the first uplink precoding matrix of the first bandwidth.
  • the terminal device receives the BF CSI-RS sent by the network device on the second bandwidth, where the second bandwidth is a subset of the first bandwidth.
  • the terminal device obtains the differential precoding matrix of the terminal device on the second bandwidth based on the BF CSI-RS.
  • the terminal device determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix.
  • the first uplink precoding matrix determined by the terminal device is accurate.
  • the terminal device jointly determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix.
  • the noise immunity of the air interface is improved, and the accuracy of the third uplink precoding matrix determined by the terminal equipment is improved, thereby improving the performance of the communication system.
  • Fig. 1 is a schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 2 is a schematic diagram of an embodiment of a communication processing method in an embodiment of the present application
  • FIG. 3 is a schematic diagram of a third uplink precoding matrix according to an embodiment of the present application.
  • FIG. 4 is another schematic diagram of the third uplink precoding matrix according to the embodiment of the present application.
  • FIG. 5 is a schematic diagram of the effect of the communication processing method of the embodiment of the present application.
  • FIG. 6 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication processing device according to an embodiment of the present application.
  • FIG. 9 is another schematic structural diagram of a communication processing device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 11 is another schematic structural diagram of a communication processing device according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a communication processing system according to an embodiment of the present application.
  • the embodiments of the present application provide a communication processing method and a communication processing device, which are used to improve the accuracy of the third uplink precoding matrix determined by the terminal equipment, and improve the performance of the communication system.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes at least one network device and at least one terminal device (for example, user equipment (user equipment, UE)).
  • UE1, UE2, UE3, UE4, and UE5 can all communicate with network devices.
  • UE3, UE4 and UE5 can also form a communication system.
  • the network device may send downlink information to UE5, and UE5 may send downlink information to UE4 or UE6.
  • the communication system shown in Figure 1 may be a long-term evolution (Long Term Evolution, LTE) system, or a fifth-generation communication (the fifth-generation, 5G) mobile communication system, or a mobile communication system after the 5G network (for example, 6G mobile communication system), or a vehicle to everything (V2X) communication system.
  • LTE Long Term Evolution
  • 5G fifth-generation communication
  • V2X vehicle to everything
  • the terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information.
  • a wireless terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • Terminal equipment also known as UE, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc.
  • UE mobile station
  • mobile terminal mobile terminal
  • MT mobile terminal
  • wireless communication functions providing voice/data connectivity to users
  • examples of some terminal devices are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, enhanced Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home.
  • VR virtual reality
  • AR Augmented reality
  • a network device may be a device in a wireless network.
  • the network device may be a radio access network (radio access network, RAN) node that connects the terminal device to the wireless network, and may also be called an access network device.
  • RAN radio access network
  • Access network equipment is a device deployed in a wireless access network to provide wireless communication functions for terminal equipment.
  • the access network equipment is a base station, and the base station is various forms of macro base stations, micro base stations (also called small stations), relay stations, access points (access point, AP), wearable devices, vehicle-mounted devices, etc.
  • the base station may also be a transmission receiving point (Transmission and Reception Point, TRP), a transmission measurement function (Transmission measurement function, TMF), etc.
  • TRP Transmission and Reception Point
  • TMF transmission measurement function
  • the base station involved in this embodiment of the present application may be a base station in a new radio interface (new radio, NR).
  • the base station in 5G NR can also be called a transmission reception point (transmission reception point, TRP) or a transmission point (transmission point, TP) or a next generation node B (next generation Node B, ngNB), or it can be the above-mentioned Figure 1 Shown is an evolved Node B (evolutional Node B, eNB or eNodeB) in a long term evolution (long term evolution, LTE) system.
  • TRP transmission reception point
  • TP transmission point
  • ngNB next generation Node B
  • LTE long term evolution
  • FIG. 2 is a schematic diagram of an embodiment of a communication processing method according to an embodiment of the present application.
  • communication processing methods include:
  • a terminal device determines a first uplink precoding matrix of a first bandwidth.
  • the first bandwidth is an uplink bandwidth occupied by the terminal device, and is used for the terminal device to transmit uplink data.
  • the first bandwidth is 5MHz (megahertz).
  • the first bandwidth includes a plurality of frequency domain units.
  • the multiple frequency domain units are frequency domain units for the network device to schedule the terminal device to perform uplink transmission. Specifically, the multiple frequency domain units may be part or all of the frequency domain units included in the first bandwidth.
  • a frequency domain unit may include one or more subbands, or, a frequency domain unit may include one or more resource blocks (resource block, RB), or, a frequency domain unit may include one or more resource elements (resource element , RE), the specific application is not limited. Since the first bandwidth includes multiple frequency domain units, the first uplink precoding matrix may be understood as an uplink wideband precoding matrix of the terminal device.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the terminal device acquires information about the first uplink precoding matrix on the first bandwidth from the network device, so as to determine the first uplink precoding matrix.
  • the network device determines an expected differential precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the second uplink precoding matrix.
  • the second uplink precoding matrix is an expected uplink precoding matrix of the terminal device on the second bandwidth.
  • the expected uplink precoding matrix on the second bandwidth is an uplink precoding matrix that the network device expects the terminal device to adopt on the second bandwidth.
  • the network device may determine the first uplink precoding matrix and the second uplink precoding matrix.
  • the network device may determine the first uplink precoding matrix and the second uplink precoding matrix.
  • the second bandwidth is a subset of the first bandwidth.
  • the second bandwidth is an i-th frequency domain unit in the plurality of frequency domain units included in the first bandwidth.
  • i is an integer greater than or equal to N
  • N is the number of frequency domain units included in the first bandwidth.
  • step 202 it is expected that there are various relationships between the differential precoding matrix and the first uplink precoding matrix and the second uplink precoding matrix, and two possible implementation manners are introduced below.
  • This application is still applicable to other implementation manners, and the implementation manners shown below are not intended to limit the technical solution of this application.
  • an introduction is made by taking the second bandwidth as an i-th frequency domain unit as an example.
  • ⁇ P UL_i is the expected differential precoding matrix of the terminal device on the i-th frequency domain unit.
  • P WB is the first uplink precoding matrix of the terminal device on the first bandwidth.
  • P UL_i is the second uplink precoding matrix.
  • the desired differential precoding matrix on the i-th frequency domain unit is the differential precoding matrix that the network device expects the terminal device to adopt on the i-th frequency domain unit.
  • due to the influence of factors such as noise and interference in the environment there may be a deviation between the differential precoding matrix used on the i-th frequency domain unit determined by the terminal device and the expected differential precoding matrix.
  • g(P WB -P UL_i ) means to perform normalization processing on P WB -P UL_i .
  • g(P UL_i -P WB ) indicates that normalization processing is performed on P UL_i -P WB .
  • normalizing P UL_i -P WB includes: adjusting the modulus of P UL_i -P WB so that the modulus of P UL_i -P WB is 1.
  • ⁇ P UL_i is the expected differential precoding matrix of the terminal device on the i-th frequency domain unit.
  • P WB is the first uplink precoding matrix of the terminal device on the first bandwidth.
  • P UL_i is the second uplink precoding matrix.
  • ⁇ P UL_i ⁇ *P UL_i ⁇ P WB , ⁇ is a real number.
  • ⁇ P UL_i is normalized.
  • the modulus value of ⁇ P UL_i is 1 by adjusting ⁇ .
  • the network device determines the first uplink precoding matrix and the second uplink precoding matrix.
  • the network device determines the first uplink precoding matrix and the second uplink precoding matrix.
  • the network device determines the first downlink beam weight according to the expected differential precoding matrix on the second bandwidth.
  • the second bandwidth is the ith frequency domain unit.
  • H DL_i represents the information of the downlink channel
  • the downlink channel is characterized as a channel for the network device to send a wireless signal to the terminal device on the i-th frequency domain unit.
  • ⁇ P UL_i is the expected differential precoding matrix of the terminal device on the i-th frequency domain unit.
  • the terminal device sends the SRS on the i-th frequency domain unit.
  • the network device estimates uplink channel information according to the SRS.
  • the uplink channel is characterized as a channel for a terminal device to send a wireless signal to a network device on the i-th frequency domain unit. Then, the network device determines the downlink channel information H DL_i according to the uplink channel information.
  • the network device determines the information HDL_i of the downlink channel according to the information of the uplink channel, and two possible implementation manners are shown below.
  • the downlink channel of a terminal device can be equivalent to the uplink channel of the terminal device.
  • the network device uses the information of the uplink channel as the information H DL_i of the downlink channel.
  • the network device may determine the information H DL_i of the downlink channel according to the reciprocity between the uplink channel and the downlink channel in the angle delay domain and the information of the uplink channel.
  • the network device generates a BF CSI-RS according to the first downlink beam weight.
  • the network device generates the BF CSI-RS on the second bandwidth by using the first downlink beam weight P DL_i .
  • the network device sends the BF CSI-RS to the terminal device on the second bandwidth.
  • the terminal device receives the BFCSI-RS sent by the network device on the second bandwidth.
  • the network device sends the BF CSI-RS to the terminal device on the second bandwidth.
  • the terminal device receives the BFCSI-RS sent by the network device on the second bandwidth.
  • the above-mentioned embodiment shown in FIG. 2 further includes step 205a.
  • the network device sends the first indication information to the terminal device.
  • the first indication information is used to instruct the terminal device to adopt the differential codebook mode.
  • the differential codebook mode includes: the first uplink precoding matrix can be configured by means of signaling instructions through the network device, and the differential precoding matrix of the terminal device on the second bandwidth is sent by the network device on the second bandwidth BF CSI-RS estimates are obtained.
  • the terminal device jointly determines an uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix.
  • the differential codebook mode is a new mode defined in this application. It should be noted that the differential codebook mode is just an example, and this application does not specifically limit the name of the new mode. For example, this new mode can also be called codebook 2 mode.
  • the differential codebook mode is used as an example for description in the following.
  • the communication protocol can define three modes, including codebook mode, non-codebook mode and differential codebook mode.
  • the network device may send first indication information to the terminal device, which is used to indicate the differential codebook mode.
  • the terminal device may use the differential codebook mode to determine the third uplink precoding matrix on the second bandwidth, and for the related introduction of the third uplink precoding matrix, please refer to the related introduction of step 207 .
  • the first indication information is used to instruct the terminal device to enable the differential codebook function.
  • the differential codebook function includes: the terminal device obtains the differential precoding matrix on the second bandwidth through the BF CSI-RS sent by the network device on the second bandwidth.
  • the first indication information includes a bit "1”, indicating that the terminal device is instructed to enable the differential codebook function.
  • the first indication information includes a bit "0”, indicating that the terminal device is instructed not to enable the differential codebook function.
  • the terminal device can enable the differential codebook function or not enable the differential codebook function.
  • the network device may indicate the codebook mode to the terminal device. Further, the network device sends first indication information to the terminal device to instruct the terminal device to enable the differential codebook function.
  • the codebook mode includes two sub-modes, one is the differential codebook mode (the terminal device enables the differential codebook function, corresponding to the differential codebook mode defined in this application), and the other is the non- Differential codebook mode (the terminal device does not enable the differential codebook function, which corresponds to the codebook mode defined in the existing communication protocol). Then the terminal device may determine to use the differential codebook mode to determine the third uplink precoding matrix on the second bandwidth, and for the related introduction of the third uplink precoding matrix, please refer to the related introduction of step 207 .
  • the first indication information is carried in the control signaling.
  • the control signaling may include radio resource control (radio resource control, RRC) signaling, DCI, or medium access control control element (medium access control control element, MAC CE), or any combination of the above three types of signaling , the specific application is not limited.
  • step 205a may be performed before step 206. There is no fixed order of execution between step 205a and steps 201 to 205. Steps 201 to 205 can be executed first, and then step 205a is executed; or, step 205a is executed first, and then steps 201 to 205 are executed; or, depending on the situation, at the same time Execute step 201 to step 205 and step 205a, which are not limited in this application.
  • the terminal device obtains the differential precoding matrix of the terminal device on the second bandwidth based on the BF CSI-RS.
  • the terminal device determines the differential precoding matrix of the terminal device on the second bandwidth through the BFCSI-RS.
  • step 206 may be specifically implemented through the following steps 206a and 206b.
  • step 206a and step 206b the second bandwidth is taken as an example of the ith frequency domain unit for illustration.
  • the terminal device measures the BF CSI-RS sent by the network device on the i-th frequency domain unit, and obtains H DL_i *P DL_i ;
  • H DL_i represents the information of the downlink channel, and the downlink channel is characterized as a channel between the network device sending a wireless signal to the terminal device on the i-th frequency domain unit.
  • P DL_i is the first downlink beam weight P DL_i used by the terminal device to estimate the network device to send the BF CSI-RS;
  • the terminal device determines a differential precoding matrix ⁇ P UL_i according to H DL_i *P DL_i .
  • the terminal device performs normalization processing on H DL_i *P DL_i to obtain a differential precoding matrix ⁇ P UL_i of the terminal device on the second bandwidth. Specifically, the terminal device adjusts the modulus of H DL_i *P DL_i so that the modulus of H DL_i *P DL_i is 1.
  • the terminal device determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix.
  • the third uplink precoding matrix is an uplink precoding matrix of the second bandwidth determined by the terminal device. Due to the influence of noise and interference, etc., there may be a deviation between the third uplink precoding matrix and the second uplink precoding matrix.
  • P UL_i is the third uplink precoding matrix on the second bandwidth determined by the terminal device
  • P WB is the first uplink precoding matrix
  • ⁇ P UL_i is the differential precoding matrix on the second bandwidth determined by the terminal device.
  • the terminal device can determine the vector through the above steps 201 and 206 and vector vector represents P WB , and P WB is the first uplink precoding matrix.
  • the P WB has been normalized, and the description will be made here by taking the modulus value of the P WB as 1 as an example.
  • vector represents ⁇ P UL_i , where ⁇ P UL_i is a differential precoding matrix on the second bandwidth determined by the terminal device.
  • ⁇ P UL_i is normalized. Therefore, the modulus value of ⁇ P UL_i is 1.
  • the terminal device may acquire that the included angle between P WB and ⁇ P UL_i is ⁇ .
  • the modulus value of the third uplink precoding matrix P UL_i is 1, combined with the first realization of the relationship between the expected differential precoding matrix, the first uplink precoding matrix, and the second uplink precoding matrix in step 202 above, it can be known that,
  • the starting point of P UL_i is the starting point d of P WB shown in Figure 3
  • the end point of P UL_i is a vector The intersection point b with the circle, the vector
  • P UL_i is the third uplink precoding matrix on the second bandwidth determined by the terminal device
  • P WB is the first uplink precoding matrix
  • g(P WB + ⁇ P' UL_i ) represents the normalization process for (P WB + ⁇ P' UL_i ).
  • ⁇ P' UL_i g( ⁇ P UL_i )
  • ⁇ P UL_i is a differential precoding matrix on the second bandwidth determined by the terminal device
  • g( ⁇ P UL_i ) represents normalization processing on ⁇ P UL_i .
  • the terminal device can determine the vector through the above steps 201 and 206 and vector vector denotes P WB , and P WB is the first uplink precoding matrix on the first bandwidth.
  • the P WB is processed by normalization, and the description is made here by taking the modulus value of the P WB as 1 as an example.
  • vector represents ⁇ P UL_i , where ⁇ P UL_i is a differential precoding matrix on the second bandwidth determined by the terminal device. ⁇ P UL_i is normalized.
  • the end device can determine the vector equal to vector plus vector End Device Pair Vector Perform normalization processing to obtain the third uplink precoding matrix P UL_i .
  • the terminal device scales the amplitude of the third uplink precoding matrix to meet the normalization of ⁇ P UL_i . In this way, the terminal device can initially determine the vector direction, and then the vector Perform normalization processing to obtain P UL_i .
  • the i th frequency domain unit may be the i th subband.
  • the network device can indicate the expected differential precoding matrix of the terminal device on the i-th sub-band through the BF CSI-RS of the i-th sub-band.
  • the terminal device determines the differential precoding matrix of the terminal device on the i-th sub-band through the BF CSI-RS of the i-th sub-band.
  • the terminal device may determine a third uplink precoding matrix for the i-th subband in combination with the differential precoding matrix on the i-th subband and the first uplink precoding matrix. It is beneficial to improve the efficiency of the uplink spectrum and improve the performance of the communication system.
  • the jitter deviation angle of air interface signal measurement is 2 ⁇ . If the terminal device obtains the uplink precoding matrix of the second bandwidth directly through BF CSI-RS estimation, it can be known that the jitter deviation angle of the uplink precoding matrix of the second bandwidth obtained by the terminal device is 2 ⁇ .
  • the accuracy of obtaining the third uplink precoding matrix by the terminal device using the communication processing method of the embodiment of the present application will be introduced below with reference to FIG. 5 .
  • the vector Indicates the first uplink precoding matrix P WB on the first bandwidth.
  • the terminal device obtains the differential precoding matrix of the second bandwidth based on the BF CSI-RS on the second bandwidth as a vector That is ⁇ P' UL_i . That is, ⁇ P' UL_i is the desired differential precoding matrix on the second bandwidth indicated by the network device to the terminal device. Therefore, in the absence of noise influence, the terminal equipment obtains P' UL_i according to P WB and ⁇ P' UL_i , namely the vector That is, P' UL_i is the third uplink precoding matrix determined and obtained by the terminal device without the influence of noise.
  • the actual estimation obtained by the terminal device through the BF CSI-RS on the second bandwidth is ⁇ P" UL_i or ⁇ P"' UL_i , which is the vector or vector
  • the angle between ⁇ P" UL_i and ⁇ P"' UL_i is 2 ⁇ . If the terminal device determines that the differential precoding matrix on the second bandwidth is ⁇ P” UL_i , the terminal device obtains P” UL_i based on P WB and ⁇ P” UL_i , which is the vector If the terminal device determines that the differential precoding matrix on the second bandwidth is ⁇ P"' UL_i .
  • the terminal device obtains P"' UL_i based on P WB and ⁇ P"' UL_i . That is, the vector It can be seen from FIG. 5 that the angle between ⁇ P" UL_i and ⁇ P"' UL_i is 2 ⁇ . Since the central angle is always twice the circumferential angle, the angle between P” UL_i and P”' UL_i is ⁇ . It can be known from this that the jitter deviation angle of the third uplink precoding matrix determined by the terminal device through the communication processing method in the embodiment of the present application is ⁇ .
  • the noise immunity of the air interface is improved, the accuracy of the third uplink precoding matrix is improved, and the communication is improved. system performance.
  • step 201 to step 207 is described by taking the terminal device determining the third uplink precoding matrix of a data stream in the second bandwidth as an example.
  • the first bandwidth may be used to transmit data of multiple data streams.
  • the first uplink precoding matrix includes multiple column vectors, and the multiple column vectors are respectively uplink precoding vectors corresponding to multiple data streams.
  • a row vector of the first uplink precoding matrix represents a sending port of the terminal device, and the sending port corresponding to the row vector of the first uplink precoding matrix is used to transmit the multiple data streams.
  • the differential precoding matrix of the second bandwidth includes multiple column vectors, and the multiple column vectors are respectively differential precoding vectors corresponding to the multiple data streams.
  • a row vector of the differential precoding matrix represents a transmission port of the terminal device. Different row vectors correspond to different sending ports. The sending ports corresponding to the row vectors of the differential precoding matrix are used to transmit the multiple data streams.
  • a first bandwidth may be used to transmit data for five data streams.
  • the network device indicates the first uplink precoding matrix of the first bandwidth to the terminal device.
  • the first uplink precoding matrix includes five column vectors, which are respectively broadband precoding vectors corresponding to the five data streams.
  • the first bandwidth includes the i-th sub-band, and the i-th sub-band is used to transmit data of data stream 1 and data stream 2 .
  • the network device indicates to the terminal device the desired differential precoding matrix on the i-th subband.
  • the expected differential precoding matrix includes two column vectors, the first column vector represents the expected differential precoding vector of data stream 1 on the i-th subband, and the second column vector represents the expected differential precoding vector of data stream 2 on the i-th subband Desired differential precoding vector.
  • the row vector of the desired differential precoding matrix represents the sending port of the terminal device, and the sending port corresponding to the row vector of the differential precoding matrix is used to transmit the first data stream and the second data stream.
  • Step 208 to step 209 may be performed after step 207 .
  • the terminal device generates data according to the third uplink precoding matrix.
  • the network device indicates the first uplink precoding matrix and expected differential precoding matrices of the multiple frequency domain units included in the first bandwidth at the data flow granularity.
  • the terminal device can determine the third uplink precoding matrix of the terminal device on the second bandwidth.
  • the terminal device may generate the data of the data stream on the second bandwidth according to the third uplink precoding matrix on the second bandwidth.
  • the terminal device sends data to the network device on the second bandwidth.
  • the network device receives the data sent by the terminal device on the second bandwidth.
  • the second bandwidth is the i th frequency domain unit
  • the terminal device sends data to the network device on the i th frequency domain unit.
  • the network device receives the data sent by the terminal device on the ith frequency domain unit.
  • the terminal device acquires the first uplink precoding matrix from the network device.
  • the first uplink precoding matrix may be indicated by the network device to the terminal device through a codeword index, and the index may be transmitted in the form of bits. Therefore, the first uplink precoding matrix determined by the terminal device is accurate.
  • the terminal device jointly determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix on the second bandwidth.
  • the terminal device generates data according to the third uplink precoding matrix on the second bandwidth, and sends the data. Improved communication transmission performance.
  • the terminal device determines the first uplink precoding matrix of the first bandwidth.
  • the terminal device receives the BF CSI-RS sent by the network device on the second bandwidth, where the second bandwidth is a subset of the first bandwidth.
  • the terminal device obtains the differential precoding matrix of the terminal device on the second bandwidth based on the BF CSI-RS; the terminal device determines the third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix . It can be seen from the above solution that the first uplink precoding matrix determined by the terminal device is accurate. therefore.
  • the terminal device jointly determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix of the second bandwidth. Therefore, the noise resistance of the air interface is improved, the accuracy of the third uplink precoding matrix determined by the terminal equipment is improved, and the performance of the communication system is improved.
  • the above embodiment shown in FIG. 2 only shows the process of the terminal device determining the third uplink precoding matrix of the terminal device on the second bandwidth.
  • the process of determining uplink precoding matrices of other bandwidths included in the first bandwidth is also similar.
  • the first bandwidth also includes a third bandwidth.
  • the third bandwidth is similar to the second bandwidth.
  • the network device determines an expected differential precoding matrix of the terminal device on the third bandwidth according to the first uplink precoding matrix and the fifth uplink precoding matrix.
  • the fifth uplink precoding matrix is an expected uplink precoding matrix of the terminal device on the third bandwidth.
  • the network device determines the second downlink beam weight according to the expected differential precoding matrix on the third bandwidth.
  • the second downlink beam weight is used for the network device to send the BF CSI-RS on the third bandwidth.
  • the network device generates the BF CSI-RS on the third bandwidth according to the second downlink beam weight.
  • the network device sends the BF CSI-RS on the third bandwidth.
  • the terminal device obtains the differential precoding matrix of the terminal device on the third bandwidth based on the BF CSI-RS on the third bandwidth.
  • the terminal device estimates the uplink precoding matrix of the terminal device on the third bandwidth according to the first uplink precoding matrix and the differential precoding matrix on the third bandwidth.
  • step 201 in the above embodiment shown in FIG. 2 may be implemented through step 601 in the embodiment shown in FIG. 6 .
  • FIG. 6 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application.
  • communication processing methods include:
  • the network device sends second indication information to the terminal device.
  • the terminal device receives the second indication information from the network device.
  • the second indication information is used to indicate the first uplink precoding matrix of the first bandwidth.
  • the second indication information may be carried in control signaling.
  • the control signaling includes RRC signaling, DCI or MAC CE, or any combination of the above three signalings.
  • the first uplink precoding matrix belongs to a codeword of the precoding codebook.
  • Each codeword in the precoding codebook has a corresponding index, and the second indication information is used to indicate the codeword, which may be the index of the codeword.
  • the network device indicates to the terminal device the first uplink precoding matrix in the first bandwidth by using the second indication information.
  • step 601a may be performed before step 601.
  • the network device determines a first uplink precoding matrix.
  • step 601a will be described below in conjunction with step 6001 and step 6002.
  • Step 6001 The network device determines the first set of matrices
  • the first set of matrices includes multiple expected uplink precoding matrices.
  • the multiple expected uplink precoding matrices are respectively expected uplink precoding matrices of multiple frequency domain units included in the first bandwidth of the terminal device.
  • the desired uplink precoding matrix is the uplink precoding matrix that the network device expects the terminal device to adopt in the corresponding frequency domain unit.
  • the uplink precoding matrix determined by the terminal device on the frequency domain unit may deviate from the expected uplink precoding matrix that the network device expects to adopt on the frequency domain unit.
  • the terminal device can transmit data of multiple data streams in one frequency domain unit.
  • Each data stream corresponds to an uplink precoding vector.
  • Each column vector in the expected uplink precoding matrix of the frequency domain unit represents an uplink precoding vector corresponding to a data stream, and different column vectors are uplink precoding vectors of different data streams.
  • Each row vector in the expected uplink precoding matrix of the frequency domain unit represents a transmission port of the terminal device. Different row vectors correspond to different sending ports. It is expected that the sending ports respectively corresponding to the row vectors of the uplink precoding matrix are used to transmit the data of the multiple data streams in the frequency domain unit.
  • the frequency domain unit that the network device schedules and schedules the terminal device for uplink transmission includes a first frequency domain unit and a second frequency domain unit of the first bandwidth.
  • the network device schedules the terminal device to transmit the data of data stream 1 to data stream 3 in the first frequency domain unit and the second frequency domain unit of the first bandwidth.
  • the first set of matrices includes two desired uplink precoding matrices.
  • the expected uplink precoding matrix of the first frequency domain unit is The expected uplink precoding matrix of the second frequency domain unit is The first column vector in is the expected uplink precoding vector of data stream 1 in the first frequency domain unit, and the first row vector corresponds to the transmitting port 1 of the terminal device.
  • the second column vector is the expected uplink precoding vector of the data stream 2 in the first frequency domain unit, and the second row vector corresponds to the sending port 2 of the terminal device.
  • the third column vector is the expected uplink precoding matrix of the data stream 3 in the first frequency domain unit, and the third row vector corresponds to the sending port 3 of the terminal device.
  • Sending port 1, sending port 2, and sending port 3 are used to transmit data of data stream 1, data stream 2, and data stream 3 in the first frequency domain unit.
  • the first column vector in is the expected uplink precoding vector of data stream 1 in the second frequency domain unit, and the first row vector corresponds to the transmitting port 1 of the terminal device.
  • the second column vector is the expected uplink precoding vector of the data stream 2 in the second frequency domain unit, and the second row vector corresponds to the sending port 2 of the terminal device.
  • the third column vector is the expected uplink precoding matrix of the data stream 3 in the third frequency domain unit, and the third row vector corresponds to the sending port 3 of the terminal device.
  • Step 6002 The network device determines the first uplink precoding matrix according to the first set of matrices. Sending port 1, sending port 2, and sending port 3 are used to transmit data of data stream 1, data stream 2, and data stream 3 on the second frequency domain unit.
  • step 6002 there are many ways for the network device to determine the first uplink precoding matrix, and two possible implementation ways are introduced below. This application is still applicable to other implementation manners, and this application does not make a specific limitation.
  • step 6002a The first implementation manner is introduced below in conjunction with step 6002a and step 6002b.
  • the network device processes multiple expected uplink precoding matrices included in the first set of matrices to obtain a fourth uplink precoding matrix.
  • Step 1 The network device adds the elements at the same position in the column vectors corresponding to the same data stream in the plurality of expected uplink precoding matrices included in the first matrix set to obtain the first target column vector corresponding to each data stream;
  • the first set of matrices includes two expected uplink precoding matrices, which are the expected uplink precoding matrices of the first frequency domain unit and the expected uplink precoding matrix of the second frequency domain unit
  • the column vector corresponding to data stream 1 includes the first column vector of the expected uplink precoding matrix of frequency domain unit 1 and the first column vector of the expected uplink precoding matrix of frequency domain unit 2
  • the first target column vector corresponding to data stream 1 is The calculation process of the first target column vector corresponding to data stream 2 and the first target column vector corresponding to data stream 3 are similar. That is, the first target column vector corresponding to data stream 2 is The first target vector corresponding to data stream 3 is
  • Step 2 The network device performs normalization processing on the first target column vectors corresponding to each data stream, and then forms the fourth uplink precoding matrix with the normalized first target column vectors corresponding to each data stream.
  • the network device assigns the first target column vector corresponding to data stream 1 The modulus value of , the first target column vector corresponding to data stream 2 The modulus value and data stream 3 correspond to the first target vector The modulus values of are adjusted to 1 respectively. Then, the network device composes the first target column vector corresponding to the normalized data stream as a column vector of the matrix according to the order of data stream 1 to data stream 3 to obtain a first precoding matrix.
  • Step 1' the network device adds column vectors corresponding to the same data stream in a plurality of expected uplink precoding matrices included in the first matrix set, to obtain a second target column vector corresponding to each data stream;
  • the column vector corresponding to data stream 1 includes the first column vector of the expected uplink precoding matrix of frequency domain unit 1 and the first column vector of the expected uplink precoding matrix of frequency domain unit 2
  • the second target column vector corresponding to data stream 1 is The calculation process of the second target column vector corresponding to data stream 2 and the second target column vector corresponding to data stream 3 are similar. That is, the second target column vector corresponding to data stream 2 is The second target vector corresponding to data stream 3 is
  • Step 2' the network device normalizes the second target column vector corresponding to each data stream, and then forms the fourth uplink precoding matrix with the normalized second target column vector corresponding to each data stream .
  • the network device adjusts the modulus value of the second target column vector corresponding to data stream 1, the modulus value of the first target column vector corresponding to data stream 2, and the modulus value of the second target vector corresponding to data stream 3 to 1 respectively. Then, the network device composes the second target column vector corresponding to the normalized data stream as a column vector of the matrix according to the order of data stream 1 to data stream 3 to obtain the first precoding matrix.
  • the network device selects the codeword with the highest correlation with the fourth uplink precoding matrix from the precoding codebook as the first uplink precoding matrix.
  • the first uplink precoding matrix is the codeword with the highest correlation with the fourth uplink precoding matrix in the precoding codebook.
  • vector 1 represents the first column vector of a codeword in the precoding codebook (it should be noted that the codeword is an uplink precoding matrix).
  • the first column vector of the codeword is the column vector corresponding to data stream 1 on the first bandwidth.
  • Vector 2 is the first column vector of the fourth uplink precoding matrix.
  • the first column vector of the fourth precoding matrix is a column vector corresponding to data stream 1 on the first bandwidth.
  • Vector 1 and Vector 2 are normalized.
  • the correlation between the vector 1 and the vector 2 can be characterized by the modulus of the product of the conjugate transpose of the vector 2 and the vector 1 . The closer the modulus of the product of the conjugate transpose of vector 2 to vector 1 is to 1, the higher the correlation between vector 1 and vector 2 is.
  • the modulus of the product of the conjugate transpose of the vector 2 and the vector 1 is greater than or equal to 0.9, it can be considered that the correlation between the vector 1 and the vector 2 is high.
  • the method for judging the correlation between other column vectors of the codeword and the corresponding column vectors of the fourth uplink precoding matrix is also applicable, and will not be repeated here.
  • the terminal device determines the sum of the correlations between the column vectors included in each codeword and the corresponding column vectors of the fourth uplink precoding matrix.
  • the column vectors included in the codeword and the corresponding column vectors of the fourth uplink precoding matrix The sum of the correlations is called the correlation between the codeword and the fourth uplink precoding matrix.
  • the terminal device selects the codeword with the highest correlation with the fourth uplink precoding matrix.
  • the fourth uplink precoding matrix is an uplink precoding matrix actually determined by the network device for the terminal device on the first bandwidth.
  • the network device indicates the uplink precoding matrix of the first bandwidth to the terminal device in a codebook-based manner. Therefore, the first uplink precoding matrix may be the closest codeword in the precoding codebook to the fourth uplink precoding matrix.
  • the network device then indicates the index of the codeword to the terminal device. In order to facilitate the terminal device to determine the codeword through the index. In this way, the indication overhead of the uplink precoding matrix used by the network device to indicate the first bandwidth of the terminal device is relatively small.
  • the process for the network device to determine the first uplink precoding matrix is relatively simple and the complexity is low, which provides a basis for the implementation of the scheme and improves the practicability of the scheme.
  • the network device determines the sum of correlations between each codeword in the precoding codebook and multiple expected uplink precoding matrices included in the first matrix set.
  • the network device uses the codeword with the largest correlation sum as the first uplink precoding matrix.
  • the sum of the correlations between the codewords and the multiple expected uplink precoding matrices included in the first matrix set can be simply referred to as the sum of the correlations of the codewords.
  • the precoding codebook includes codeword A and codeword B
  • the first set of matrices includes matrix 1 and matrix 2 .
  • the sum of the correlations of codeword A is the correlation of codeword A with matrix 1 and the correlation of codeword A with matrix 2.
  • the sum of the correlations of codeword B is the correlation of codeword B with matrix 1 and the correlation of codeword B with matrix 2. If the sum of the correlations of the codeword A is greater than the sum of the correlations of the codeword B, the network device uses the codeword A as the first uplink precoding matrix.
  • the network device determines that the obtained first uplink precoding matrix is more optimal through the above second implementation manner. It is beneficial to indicate for the terminal device the first uplink precoding matrix that matches the uplink channel condition between the terminal device and the network device.
  • the process of determining the first set of matrices by the network device is introduced below with reference to FIG. 7 .
  • FIG. 7 is a schematic diagram of another embodiment of a communication processing method according to an embodiment of the present application.
  • communication processing methods include:
  • a network device receives SRSs from multiple terminal devices.
  • each of the multiple terminal devices sends the SRS to the network device in all or part of the frequency domain units on the first bandwidth.
  • the network device respectively receives the SRS from each terminal device in the multiple terminal devices in all or part of the frequency domain units on the first bandwidth.
  • different terminal devices may respectively send SRSs in the same or different frequency domain units of the first bandwidth.
  • the network device estimates the uplink channel of each terminal device among the multiple terminal devices according to the SRSs of the multiple terminal devices.
  • the uplink channel of each terminal device includes a channel between the terminal device sending wireless signals to network devices on each frequency domain unit of the first bandwidth.
  • the network device selects a terminal device to be scheduled from multiple terminal devices according to uplink channels of the multiple terminal devices, and determines a second matrix set.
  • the second set of matrices includes expected uplink precoding matrices of each of the terminal devices to be scheduled on the first frequency domain unit in the first bandwidth.
  • the first frequency domain unit is a frequency domain unit to be scheduled by the network device for the terminal device.
  • the first frequency domain unit includes at least two frequency domain units.
  • the number of frequency domain units included in the first frequency domain unit is less than or equal to the number of frequency domain units included in the first bandwidth.
  • the terminal devices to be scheduled include some or all of the multiple terminal devices.
  • the first frequency domain units may or may not be the same.
  • the network device determines the first frequency domain unit corresponding to each terminal device among the terminal devices to be scheduled.
  • the terminal devices to be scheduled include terminal device 1 and terminal device 2, the network device will schedule terminal device 1 in the first frequency domain unit and the second frequency domain unit of the first bandwidth, and the network device will schedule terminal device 1 in the first bandwidth
  • the third frequency domain unit and the fourth frequency domain unit schedule the terminal device 2 .
  • the second set of matrices includes expected uplink precoding matrices of each of the terminal devices to be scheduled on the first frequency domain unit in the first bandwidth.
  • the second set of matrices includes multiple expected uplink precoding matrices included in the first set of matrices in step 6001 in the embodiment shown in FIG. 6 above.
  • the second set of matrices includes the second uplink precoding matrix in step 202 in the above embodiment shown in FIG. 2 .
  • For the related introduction of the second uplink precoding matrix please refer to the related introduction of FIG. 2 .
  • the network device selects a terminal device to be scheduled from multiple terminal devices according to a preset algorithm and uplink channels of the multiple terminal devices, and determines the second matrix set.
  • the preset algorithm includes a zero force (zero force, ZF) algorithm or a minimum mean squared error (minimum mean squared error, MMSE) algorithm.
  • the optimization target of the preset algorithm may include at least one of the following: the maximum system throughput, the minimum data packet delay, or the highest user experience fairness.
  • FIG. 8 is a schematic structural diagram of a communication processing device according to an embodiment of the present application.
  • the communication processing apparatus 800 may be configured to execute the steps performed by the terminal device in the above embodiments shown in FIG. 2 and FIG. 6 , and reference may be made to relevant descriptions in the above method embodiments.
  • the communication processing device 800 includes a processing module 801 and a transceiver module 802 .
  • a processing module 801 configured to determine a first uplink precoding matrix of a first bandwidth
  • the transceiver module 802 is configured to receive the BF CSI-RS sent by the network device on the second bandwidth, where the second bandwidth is a subset of the first bandwidth;
  • the processing module 801 is configured to obtain the differential precoding matrix of the communication processing device on the second bandwidth based on the BF CSI-RS; and determine the third precoding matrix of the communication processing device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix. Uplink precoding matrix.
  • processing module 801 is specifically configured to:
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the second bandwidth is the ith frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth; the processing module 801 specifically Used for:
  • H DL_i represents the downlink channel of the i-th frequency domain unit, and the downlink channel is estimated by the communication processing device between the network device on the i-th frequency domain unit and the communication processing device
  • P DL_i is the downlink beam weight P DL_i used by the communication processing device to estimate the BF CSI-RS sent by the network equipment; determine the differential precoding matrix ⁇ P UL_i according to H DL_i *P DL_i .
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • P UL_i P WB +f( ⁇ P UL_i );
  • P UL_i is the third uplink precoding matrix
  • P WB is the first uplink precoding matrix
  • ⁇ P UL_i is the differential precoding matrix
  • f( ⁇ P UL_i ) 2*cos( ⁇ i )* ⁇ P UL_i
  • ⁇ i ⁇ - ⁇
  • ⁇ is the angle between P WB and ⁇ P UL_i .
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • P UL_i g(P WB + ⁇ P' UL_i );
  • P UL_i is the third uplink precoding matrix
  • P WB is the first uplink precoding matrix
  • g(P WB + ⁇ P' UL_i ) represents normalization processing of (P WB + ⁇ P' UL_i );
  • ⁇ P' UL_i g( ⁇ P UL_i )
  • ⁇ P UL_i is a differential precoding matrix
  • g( ⁇ P UL_i ) represents normalization processing on ⁇ P UL_i .
  • the transceiver module 802 is also used to:
  • the first instruction information from the network device is received, where the first instruction information is used to instruct the communication processing apparatus to adopt a differential codebook mode.
  • the transceiver module 802 is also used to:
  • the first instruction information from the network device is received, where the first instruction information is used to instruct the communication processing device to enable the differential codebook function.
  • the processing module 801 is used to determine the first uplink precoding matrix of the first bandwidth; the transceiver module 802 is used to receive the BFCSI-RS sent by the network device on the second bandwidth, and the second bandwidth is the first bandwidth A subset of the bandwidth; the processing module 801 is used to obtain the differential precoding matrix of the communication processing device on the second bandwidth based on BFCSI-RS; determine the first uplink precoding matrix and the differential precoding matrix of the communication processing device according to the first uplink precoding matrix and the differential precoding matrix The third uplink precoding matrix on the second bandwidth.
  • the first uplink precoding matrix determined by the processing module 801 is accurate.
  • the processing module 801 jointly determines a third uplink precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix. Therefore, the noise resistance of the air interface is improved, and the precision of the third uplink precoding matrix is improved, thereby improving the performance of the communication system.
  • FIG. 9 is a schematic structural diagram of a communication processing device according to an embodiment of the present application.
  • the communication processing apparatus 900 may be configured to execute the steps performed by the network device in the above embodiments shown in FIG. 2 , FIG. 6 and FIG. 7 , and reference may be made to relevant descriptions in the above method embodiments.
  • the communication processing device 900 includes a transceiver module 901 and a processing module 902 .
  • a transceiver module 901, configured to send second indication information to the terminal device, where the first indication information is used to indicate the first uplink precoding matrix of the first bandwidth;
  • the processing module 902 is configured to determine an expected differential precoding matrix of the terminal device on the second bandwidth according to the first uplink precoding matrix and the second uplink precoding matrix, and the second uplink precoding matrix is the terminal device's expected differential precoding matrix on the second bandwidth
  • the expected uplink precoding matrix, the second bandwidth is a subset of the first bandwidth;
  • the first downlink beam weight is determined according to the expected differential precoding matrix;
  • the BF CSI-RS is generated according to the first downlink beam weight; in the second bandwidth
  • the BF CSI-RS is sent to the terminal equipment, and the BF CSI-RS is used for the terminal equipment to estimate the expected differential precoding matrix.
  • the transceiver module 901 is specifically configured to: send DCI to the terminal device, where the DCI is used to indicate the first uplink precoding matrix.
  • the first uplink precoding matrix belongs to a codeword in the precoding codebook.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • ⁇ P UL_i g(P WB -P UL_i ), ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, g(P WB -P UL_i ) means Perform normalization processing on P WB -P UL_i .
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • ⁇ P UL_i ⁇ *P UL_i -P WB ; ⁇ P UL_i is the desired differential precoding matrix, P WB is the first uplink precoding matrix, P UL_i is the second uplink precoding matrix, and ⁇ is a real number. Through the adjustment of ⁇ , ⁇ P UL_i is normalized.
  • the second bandwidth is the i-th frequency domain unit, i is an integer greater than or equal to 1 and less than or equal to N, and N is the number of frequency domain units included in the first bandwidth;
  • H DL_i *P DL_i ⁇ P UL_i
  • H DL_i represents the downlink channel
  • the downlink channel is the downlink channel between the communication processing device on the i-th frequency domain unit of the terminal equipment and the terminal equipment
  • P DL_i is the first downlink beam weight
  • ⁇ P UL_i is the desired differential precoding matrix.
  • the transceiver module 901 is further configured to: send first indication information to the terminal device, where the first indication information is used to instruct the terminal device to adopt the differential codebook mode.
  • the transceiver module 901 is further configured to: send first indication information to the terminal device, where the first indication information is used to enable the terminal device to enable the differential codebook function.
  • the transceiver module 901 is configured to send second indication information to the terminal device, the second indication information is used to indicate the first uplink precoding matrix of the first bandwidth;
  • the processing module 902 is configured to The encoding matrix and the second uplink precoding matrix determine the expected differential precoding matrix of the terminal device on the second bandwidth, the second uplink precoding matrix is the expected uplink precoding matrix of the terminal device on the second bandwidth, and the second bandwidth is the second bandwidth A subset of bandwidth; determine the first downlink beam weight according to the expected differential precoding matrix; generate BF CSI-RS according to the first downlink beam weight; send BF CSI-RS to the terminal device on the second bandwidth, BF The CSI-RS is used by the terminal equipment to estimate the desired differential precoding matrix.
  • the transceiving module 901 sends second indication information to the terminal device to indicate the first uplink precoding matrix of the first bandwidth. Then, the first uplink precoding matrix determined by the terminal device is accurate. BF CSI-RS is used for terminal equipment to estimate the desired differential precoding matrix. The terminal device may determine the third uplink precoding matrix on the second bandwidth according to the first uplink precoding matrix and the differential precoding matrix on the second bandwidth. Therefore, the noise resistance of the air interface is improved, the accuracy of the third uplink precoding matrix determined by the terminal equipment is improved, and the performance of the communication system is improved.
  • FIG. 10 A possible structural schematic diagram of a terminal device is shown below by using FIG. 10 .
  • Fig. 10 shows a schematic structural diagram of a simplified terminal device.
  • a mobile phone is used as an example of the terminal device.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, process data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 10 For ease of illustration, only one memory and processor are shown in FIG. 10 .
  • processors and one or more memories.
  • a memory may also be called a storage medium or a storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device, and the processor with the processing function may be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 1010 and a processing unit 1020 .
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • a processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device in the transceiver unit 1010 for realizing the receiving function may be regarded as a receiving unit
  • the device in the transceiver unit 1010 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 1010 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • transceiving unit 1010 is used to perform the sending and receiving operations of the terminal device in the above method embodiments
  • processing unit 1020 is used to perform other operations on the terminal device in the above method embodiments except for the transceiving operation.
  • the processing unit 1020 is configured to execute step 201, step 206, and step 207 in the embodiment shown in FIG. 2 above, and the transceiver unit 1010 is configured to execute step 205 in the embodiment shown in FIG. 2 above. .
  • the processing unit 1020 is configured to execute step 208 in the above embodiment shown in FIG. 2 .
  • the transceiver unit 1010 is also configured to execute step 205a and step 209 in the embodiment shown in FIG. 2 above.
  • the transceiver unit 1010 is configured to execute step 601 in the above embodiment shown in FIG. 2 .
  • the chip When the terminal device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit or a logic circuit integrated on a chip.
  • the sending operation corresponds to the output of the input-output circuit
  • the receiving operation corresponds to the input of the input-output circuit.
  • FIG. 11 is another schematic structural diagram of a communication processing device 1100 in the embodiment of the present application.
  • the communication processing apparatus 1100 includes: a processor 1101 , a memory 1102 and a transceiver 1103 .
  • the processor 1311, the memory 1102 and the transceiver 1103 are respectively connected through a bus, and computer instructions are stored in the memory.
  • the communication processing apparatus 1100 When the communication processing apparatus 1100 is a network device, or a chip in the network device, the communication processing apparatus 1100 may be used to execute the steps performed by the network device in the embodiments shown in FIG. 2 , FIG. 6 and FIG. 7 . Reference may be made to relevant descriptions in the foregoing method embodiments.
  • the aforementioned transceiver module 901 shown in FIG. 9 may specifically be the transceiver 1103, therefore, the specific implementation of the transceiver 1103 will not be repeated here.
  • the aforementioned processing module 902 shown in FIG. 9 may specifically be the processor 1101 , and therefore, specific implementation of the processor 1101 will not be repeated here.
  • the communication processing apparatus 1100 When the communication processing apparatus 1100 is a terminal device, or a chip in the terminal device, the communication processing apparatus 1100 may be used to execute the steps performed by the terminal device in the above embodiments shown in FIG. 2 and FIG. 6 . Reference may be made to relevant descriptions in the foregoing method embodiments.
  • the aforementioned transceiver module 802 shown in FIG. 8 may specifically be the transceiver 1103 in this embodiment, and therefore, the specific implementation of the transceiver 1103 will not be repeated here.
  • the aforementioned processing module 801 shown in FIG. 8 may specifically be the processor 1101 in this embodiment, and therefore, specific implementation of the processor 1101 will not be repeated here.
  • FIG. 12 is a schematic diagram of a communication processing system according to an embodiment of the present application.
  • the communication processing system includes network equipment and terminal equipment.
  • the network device is configured to execute all or part of the steps performed by the network device in the embodiments shown in FIG. 2 , FIG. 6 and FIG. 7 .
  • the terminal device is configured to perform all or part of the steps performed by the terminal device in the embodiment shown in FIG. 2 and FIG. 6 .
  • the embodiment of the present application also provides a computer program product including computer instructions, which, when run on a computer, causes the computer to execute the communication processing method in the embodiments shown in FIG. 2 , FIG. 6 and FIG. 7 .
  • the embodiment of the present application also provides a computer-readable storage medium, including computer instructions.
  • the computer instructions When the computer instructions are run on the computer, the computer is made to execute the communication processing method of the embodiment shown in FIG. 2 , FIG. 6 and FIG. 7 .
  • the embodiment of the present application also provides a chip device, including a processor, configured to invoke a computer program stored in a memory, so that the processor executes the communication processing method in the embodiments shown in FIG. 2 , FIG. 6 and FIG. 7 .
  • the processor is coupled to the memory through an interface.
  • the chip device further includes a memory, and a computer program is stored in the memory.
  • the processor mentioned in any of the above can be a general-purpose central processing unit, a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the above-mentioned Fig. 2, Fig. 6 and an integrated circuit for program execution of the communication processing method of the embodiment shown in FIG. 7 .
  • ASIC application-specific integrated circuit
  • the memory mentioned in any of the above can be read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), etc.
  • read-only memory read-only memory
  • RAM random access memory
  • the device embodiments described above are only illustrative, and 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 , which can be located in one place, or can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • the connection relationship between the modules indicates that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • a computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • a computer can be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, computer instructions may be transmitted from a website site, computer, network device, or local computing device, Computing equipment or data center to another website site, computer, network equipment, or local computing equipment, Computing equipment or data center for transmission.
  • the computer-readable storage medium may be any available medium that can be stored by a computer, or a network device integrated with one or more available media, or a data storage device such as a local computing device or a data center.
  • the usable medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (Solid State Disk, SSD)), etc.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • a unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the essence of the technical solution of this application or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application.

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Abstract

本申请实施例公开了一种通信处理方法和通信处理装置，用于提高空口的抗噪性，提高终端设备确定的第三上行预编码矩阵的精度，从而提升通信系统性能。本申请实施例方法包括：终端设备确定第一带宽的第一上行预编码矩阵；所述终端设备接收所述网络设备在第二带宽上发送的波束赋形信道状态信息参考信号BF CSI-RS，所述第二带宽为所述第一带宽的子集；所述终端设备基于所述BF CSI-RS得到所述终端设备在所述第二带宽上的差分预编码矩阵；所述终端设备根据所述第一上行预编码矩阵和所述差分预编码矩阵确定所述终端设备在所述第二带宽上的第三上行预编码矩阵。

Description

通信处理方法和通信处理装置
本申请要求于2021年06月01日提交中国专利局，申请号为202110611205.3，发明名称为“通信处理方法和通信处理装置”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
本申请涉及通信技术领域，尤其涉及一种通信处理方法和通信处理装置。
背景技术
随着第五代移动通信技术(5th generation mobile communication technology，5G)的全面商用，网络除了满足日益增长的大带宽移动互联网需求，还需要与垂直行业的多种业务结合。例如，网络需要满足工业制造、交通、能源、教育、医疗等行业应用的需求。行业的丰富应用场景对5G网络的性能(例如，5G网络的上行容量、5G网络的上行覆盖范围)提出了更高的要求。针对上述需求，目前提供的上行传输方式主要包括基于码本的上行传输和基于非码本的上行传输。
目前，终端设备发送探测参考信号(sounding reference signal，SRS)，基站根据SRS估计上行信道。基站根据多个终端设备的上行信道确定每个终端设备在每个子带上对应的上行期望预编码矩阵。然后，基站发送波束赋形信道状态信息(beamforming channel state information reference signaling，BF CSI-RS)。终端设备接收BF CSI-RS，并根据BF CSI-RS确定终端设备在对应子带上的上行预编码矩阵。
由上述技术方案可知，基站通过BF CSI-RS指示终端设备的上行预编码矩阵。由于空口指示的方式会受到噪声和干扰等的影响，导致终端设备通过BF CSI-RS估计的上行预编码矩阵的精度较低，影响通信系统的性能。
发明内容
本申请实施例提供了一种通信处理方法和通信处理装置，用于提高终端设备确定的第三上行预编码矩阵的精度，提升通信系统性能。
本申请实施例第一方面提供一种通信处理方法，方法包括：
终端设备确定第一带宽的第一上行预编码矩阵。终端设备接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集。终端设备基于BF CSI-RS得到终端设备在第二带宽上的差分预编码矩阵。终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵。
上述技术方案中，终端设备可以通过网络设备的信令指示确定第一上行预编码矩阵。因此，终端设备确定的第一上行预编码矩阵是精确的。终端设备根据第一上行预编码矩阵和差分预编码矩阵共同确定终端设备在第二带宽上的第三上行预编码矩阵。从而提高空口的抗噪性，提高终端设备确定的第三上行预编码矩阵的精度，从而提升通信系统性能。
一种可能的实现方式中，终端设备确定第一带宽的第一上行预编码矩阵，包括：终端 设备接收来自网络设备的下行控制信息(downlink control information，DCI)，DCI用于指示第一上行预编码矩阵。
在该实现方式中，网络设备向终端设备发送DCI，用于向终端设备指示第一上行预编码矩阵。这样终端设备通过DCI得到的第一上行预编码矩阵是精确的。有利于终端设备根据第一上行预编码矩阵和差分预编码矩阵确定精确的第三上行预编码矩阵。从而提高第三上行预编码矩阵的精度，从而提升通信系统性能。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
在该实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。这样网络设备可以通过该码字的索引向终端设备指示第一上行预编码矩阵。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；终端设备基于BF CSI-RS得到终端设备在第二带宽上的差分预编码矩阵，包括：终端设备测量BF CSI-RS，得到H DL_i*P DL_i；H DL_i表示第i个频域单元的下行信道的信息，下行信道为终端设备估计的在第i个频域单元上网络设备到终端设备之间的下行信道；P DL_i为终端设备估计的网络设备发送BF CSI-RS所采用的下行波束权值P DL_i；终端设备根据H DL_i*P DL_i确定差分预编码矩阵ΔP UL_i。
该实现方式中，终端设备根据BF CSI-RS确定第二带宽上的差分预编码矩阵。提供了终端设备确定第二带宽上的差分预编码矩阵的一种具体的实现方式，为方案的实施提供了基础。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵，包括：终端设备根据以下方式确定第三上行预编码矩阵；
P UL_i＝P WB+f(ΔP UL_i)；其中，P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵，ΔP UL_i为差分预编码矩阵，f(ΔP UL_i)＝2*cos(α i)*ΔP UL_i，α i＝π-β，β为P WB与ΔP UL_i之间的夹角。
上述实现方式提供了第一上行预编码矩阵、差分预编码矩阵和第三上行预编码矩阵之间的关系的一种具体的实现方式，提升了方案的可实现性，为方案的实施提供基础。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为所述第一带宽包括的频域单元数；终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵，包括：终端设备根据以下方式确定第三上行预编码矩阵；P UL_i＝g(P WB+ΔP' UL_i)；P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵；g(P WB+ΔP' UL_i)表示对(P WB+ΔP' UL_i)归一化处理；ΔP' UL_i＝g(ΔP UL_i)，ΔP UL_i为差分预编码矩阵，g(ΔP UL_i)表示对ΔP UL_i归一化处理。
上述实现方式提供了第一上行预编码矩阵、差分预编码矩阵和第三上行预编码矩阵之间的关系的另一种具体的实现方式，提升了方案的可实现性和多样性。
另一种可能的实现方式中，方法还包括：终端设备接收来自网络设备的第一指示信息，第一指示信息用于指示终端设备采用差分码本模式。
上述实现方式中，网络设备可以向终端设备指示差分码本模式。这样终端设备可以采用差分码本模式确定第二带宽上的第三上行预编码矩阵。从而提高第三上行预编码矩阵的精度，提升通信系统性能。
另一种可能的实现方式中，方法还包括：终端设备接收来自网络设备的第一指示信息，第一指示信息用于终端设备开启差分码本功能。
在该可能的实现方式中，基于码本模式下，终端设备可以开启差分码本功能。那么终端设备可以确定采用差分码本模式确定第二带宽上的第三上行预编码矩阵。从而提高第三上行预编码矩阵的精度，提升通信系统性能。其次，上述实现方式中提供了另一种指示差分码本模式的方案，提升了方案的多样性。
本申请实施例第二方面提供一种通信处理方法，方法包括：
网络设备向终端设备发送第二指示信息，第二指示信息用于指示第一带宽的第一上行预编码矩阵；网络设备根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，第二上行预编码矩阵是终端设备在第二带宽上的期望上行预编码矩阵，第二带宽为第一带宽的子集；网络设备根据期望差分预编码矩阵确定第一下行波束权值；网络设备根据第一下行波束权值生成BF CSI-RS；网络设备在第二带宽上向终端设备发送BF CSI-RS，BF CSI-RS用于终端设备估计期望差分预编码矩阵。
上述技术方案中，网络设备向终端设备发送第二指示信息，以指示第一带宽的第一上行预编码矩阵。那么，终端设备确定的第一上行预编码矩阵是精确的。网络设备根据期望差分预编码矩阵确定第一下行波束权值；网络设备根据第一下行波束权值生成BF CSI-RS；网络设备在第二带宽上向终端设备发送BF CSI-RS，BF CSI-RS用于终端设备估计期望差分预编码矩阵。终端设备可以确定第一上行预编码矩阵和在第二带宽上的差分预编码矩阵，以用于终端设备确定在第二带宽上的第三上行预编码矩阵。从而提高空口的抗噪性，提高了终端设备确定的第三上行预编码矩阵的精度，提升了通信系统性能。
一种可能的实现方式中，网络设备向终端设备发送第二指示信息，包括：网络设备向终端设备发送DCI，DCI用于指示第一上行预编码矩阵。
在该可能的实现方式中，提供了第二指示信息的一种具体的承载载体，为方案的实施提供基础。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
在该实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。这样网络设备可以通过该码字的索引向终端设备指示第一上行预编码矩阵。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；网络设备根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，包括：网络设备根据以下方式确定在第二带宽上的差分预编码矩阵；
ΔP UL_i＝g(P WB-P UL_i)，ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。
上述实现方式中提供了期望差分预编码矩阵、第一上行预编码矩阵和第二上行预编码 矩阵之间的关系的一种具体实现方式，为方案的实施提供基础，有利于方案的实施。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；网络设备根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，包括：网络设备根据以下方式确定在第二带宽上的差分预编码矩阵；
ΔP UL_i＝γ*P UL_i-P WB；ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，γ为实数，通过γ的调整使得ΔP UL_i是归一化的。
上述实现方式中提供了期望差分预编码矩阵、第一上行预编码矩阵和第二上行预编码矩阵之间的关系的另一种具体实现方式，为方案的实施提供基础，有利于方案的实施以及方案的多样性。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；网络设备根据期望差分预编码矩阵确定第一下行波束权值，包括：终端设备根据以下方式确定第一下行波束权值；
H DL_i*P DL_i＝ΔP UL_i，H DL_i表示下行信道的信息，下行信道的信息为终端设备在第i个频域单元上网络设备到终端设备之间的下行信道，P DL_i为第一下行波束权值，ΔP UL_i为期望差分预编码矩阵。
在该实现方式中，示出了第一下行波束权值的具体确定方式，从而实现终端设备可以通过第二带宽上的BF CSI-RS确定第二带宽的差分预编码矩阵，从而便于终端设备结合第二带宽的差分预编码矩阵和第一上行预编码矩阵确定第二带宽的第三上行预编码矩阵。以提高第三上行预编码矩阵的精度，提升通信系统性能。
另一种可能的实现方式中，方法还包括：网络设备向终端设备发送第一指示信息，第指示信息用于指示终端设备采用差分码本模式。
上述实现方式中，网络设备可以向终端设备指示差分码本模式。这样终端设备可以采用差分码本模式确定第二带宽上的第三上行预编码矩阵。从而提高第三上行预编码矩阵的精度，提升通信系统性能。
另一种可能的实现方式中，方法还包括：网络设备向终端设备发送第一指示信息，第一指示信息用于使能终端设备开启差分码本功能。
在该可能的实现方式中，网络设备可以向终端设备开启差分码本功能。这样，基于码本模式下，终端设备可以开启差分码本功能。那么终端设备可以确定采用差分码本模式确定第二带宽上的第三上行预编码矩阵。从而提高第三上行预编码矩阵的精度，提升通信系统性能。其次，上述实现方式中提供了另一种指示差分码本模式的方案，提升了方案的多样性。
本申请实施例第三方面提供一种通信处理装置，通信处理装置包括：
处理模块，用于确定第一带宽的第一上行预编码矩阵；
收发模块，用于接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集；
处理模块，用于基于BF CSI-RS得到通信处理装置在第二带宽上的差分预编码矩阵； 根据第一上行预编码矩阵和差分预编码矩阵确定通信处理装置在第二带宽上的第三上行预编码矩阵。
一种可能的实现方式中，处理模块具体用于：
接收来自网络设备的DCI，DCI用于指示第一上行预编码矩阵。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；
处理模块具体用于：
测量BF CSI-RS，得到H DL_i*P DL_i；H DL_i表示第i个频域单元的下行信道，下行信道为通信处理装置估计的在第i个频域单元上网络设备到通信处理装置之间的下行信道；P DL_i为通信处理装置估计网络设备发送BF CSI-RS所采用的下行波束权值P DL_i；根据H DL_i*P DL_i确定差分预编码矩阵ΔP UL_i。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；处理模块具体用于：根据以下方式确定第三上行预编码矩阵；
P UL_i＝P WB+f(ΔP UL_i)；其中，P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵，ΔP UL_i为差分预编码矩阵，f(ΔP UL_i)＝2*cos(α i)*ΔP UL_i，α i＝π-β，β为P WB与ΔP UL_i之间的夹角。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为所述第一带宽包括的频域单元数；处理模块具体用于：根据以下方式确定第三上行预编码矩阵；
P UL_i＝g(P WB+ΔP' UL_i)；其中，P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵，g(P WB+ΔP' UL_i)表示对(P WB+ΔP' UL_i)归一化处理；ΔP' UL_i＝g(ΔP UL_i)，ΔP UL_i为差分预编码矩阵，g(ΔP UL_i)表示对ΔP UL_i归一化处理。
另一种可能的实现方式中，收发模块还用于：
接收来自网络设备的第一指示信息，第一指示信息用于指示通信处理装置采用差分码本模式。
另一种可能的实现方式中，收发模块还用于：
接收来自网络设备的第一指示信息，第一指示信息用于指示通信处理装置开启差分码本功能。
本申请实施例第四方面提供一种通信处理装置，通信处理装置包括：
收发模块，用于向终端设备发送第二指示信息，第二指示信息用于指示第一带宽的第一上行预编码矩阵；
处理模块，用于根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，第二上行预编码矩阵是终端设备在第二带宽上的期望上行预编码矩阵，第二带宽为第一带宽的子集；根据期望差分预编码矩阵确定第一下行波束权值；根据第一下行波束权值生成BF CSI-RS；在第二带宽上向终端设备发送BF CSI-RS，BF  CSI-RS用于终端设备估计期望差分预编码矩阵。
一种可能的实现方式中，收发模块具体用于：向终端设备发送DCI，DCI用于指示第一上行预编码矩阵。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；处理模块具体用于：根据以下方式确定第二带宽上的差分预编码矩阵；
ΔP UL_i＝g(P WB-P UL_i)，ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；处理模块具体用于：根据以下方式确定第二带宽上的差分预编码矩阵；
ΔP UL_i＝γ*P UL_i-P WB；ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，γ为实数，通过γ的调整使得ΔP UL_i是归一化的。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；处理模块具体用于：根据以下方式确定第二带宽上的第一下行波束权值；
H DL_i*P DL_i＝ΔP UL_i，H DL_i表示下行信道的信息，下行信道的信息为终端设备在第i个频域单元上通信处理装置到终端设备之间的下行信道，P DL_i为第一下行波束权值，ΔP UL_i为期望差分预编码矩阵。
另一种可能的实现方式中，收发模块还用于：向终端设备发送第一指示信息，第一指示信息用于指示终端设备采用差分码本模式。
另一种可能的实现方式中，收发模块还用于：向终端设备发送第一指示信息，第一指示信息用于指示终端设备开启差分码本功能。
本申请实施例第五方面提供一种通信处理装置，通信处理装置包括：处理器和存储器。存储器中存储有计算机程序，处理器还用于调用并运行存储器中存储的计算机程序，使得处理器实现如第一方面中的任意一种实现方式。
可选的，通信处理装置包括收发器；处理器用于控制收发器执行如第一方面中的任意一种实现方式。
其中，第五方面所带来的技术效果可参见第一方面中不同可能实现方式所带来的技术效果，此处不再赘述。
本申请实施例第六方面提供一种通信处理装置，通信处理装置包括：处理器和存储器。存储器中存储有计算机程序，处理器还用于调用并运行存储器中存储的计算机程序，使得处理器实现如第二方面中的任意一种实现方式。
可选的，通信处理装置包括收发器；处理器用于控制收发器执行如第二方面中的任意一种实现方式。
其中，第六方面所带来的技术效果可参见第二方面中不同可能实现方式所带来的技术 效果，此处不再赘述。
本申请实施例第七方面提供一种包括计算机指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行如第一方面或第二方面中任一种的实现方式。
本申请实施例第八方面提供一种计算机可读存储介质，包括计算机指令，当计算机指令在计算机上运行时，使得计算机执行如第一方面或第二方面中的任一种实现方式。
本申请实施例第九方面提供一种通信装置，通信装置包括网络设备、终端设备或芯片等实体，通信装置包括处理器，用于调用存储器中的计算机程序，以使得处理器执行上述第一方面或第二方面中的任一种实现方式。
可选的，处理器通过接口与存储器耦合。
本申请实施例第十方面提供一种通信系统，通信系统包括如第三方面的通信处理装置和如第四方面的通信处理装置。
本申请实施例第十一方面提供一种芯片，包括处理器，用于与存储器相连，调用该存储器中存储的程序，以使得该处理器执行上述第一方面或第二方面中的任一种实现方式。
从以上技术方案可以看出，本申请实施例具有以下优点：
经由上述技术方案可知，终端设备确定第一带宽的第一上行预编码矩阵。终端设备接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集。终端设备基于BF CSI-RS得到终端设备在第二带宽上的差分预编码矩阵。终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵。上述技术方案中，终端设备确定的第一上行预编码矩阵是精确的。那么终端设备根据第一上行预编码矩阵和差分预编码矩阵共同确定终端设备在第二带宽上的第三上行预编码矩阵。提高了空口的抗噪性，提高终端设备确定的第三上行预编码矩阵的精度，从而提升通信系统性能。
附图说明
图1为本申请实施例通信系统的一个示意图；
图2为本申请实施例通信处理方法的一个实施例示意图；
图3为本申请实施例第三上行预编码矩阵的一个示意图；
图4为本申请实施例第三上行预编码矩阵的另一个示意图；
图5为本申请实施例通信处理方法的一个效果示意图；
图6为本申请实施例通信处理方法的另一个实施例示意图；
图7为本申请实施例通信处理方法的另一个实施例示意图；
图8为本申请实施例通信处理装置的一个结构示意图；
图9为本申请实施例通信处理装置的另一个结构示意图；
图10为本申请实施例终端设备的一个结构示意图；
图11为本申请实施例通信处理装置的另一个结构示意图；
图12为本申请实施例通信处理系统的一个示意图。
具体实施方式
本申请实施例提供了一种通信处理方法和通信处理装置，用于提高终端设备确定的第三上行预编码矩阵的精度，提升通信系统性能。
请参阅图1，图1为本申请实施例通信系统的一个示意图。图1中，通信系统包括至少一个网络设备和至少一个终端设备(例如，用户设备(user equipment，UE))。如图1所示，通信系统中，UE1、UE2、UE3、UE4和UE5都可以和网络设备进行通信。UE3，UE4和UE5也可以组成一个通信系统。例如，网络设备可以向UE5发送下行信息，而UE5可以向UE4或UE6发送下行信息。
图1所示的通信系统可以为长期演进(Long Term Evolution，LTE)系统，或者第五代通信(the fifth-generation，5G)移动通信系统，或者5G网络之后的移动通信系统(例如，6G移动通信系统)，或者车联网(vehicle to everything，V2X)通信系统。
终端设备可以是能够接收网络设备调度和指示信息的无线终端设备。无线终端设备可以是指向用户提供语音和/或数据连通性的设备，或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。
终端设备，又称之为UE、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是包括无线通信功能(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、或车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，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、远程手术(remote medical surgery)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、或智慧家庭(smart home)中的无线终端等。
网络设备可以是无线网络中的设备。例如，网络设备可以为将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点，又可以称为接入网设备。
接入网设备是一种部署在无线接入网中为终端设备提供无线通信功能的装置。接入网设备为基站，而基站为各种形式的宏基站、微基站(也称为小站)、中继站、接入点(access point，AP)、可穿戴设备、车载设备等。基站还可以为传输接收节点(Transmission and Reception Point，TRP)、传输测量功能(Transmission measurement function，TMF)等。示例性地，本申请实施例涉及到的基站可以是新空口(new radio，NR)中的基站。其中，5G NR中的基站还可以称为发送接收点(transmission reception point，TRP)或传输点(transmission point，TP)或下一代节点B(next generation Node B，ngNB)，也可以是上述图1所示的长期演进(long term evolution，LTE)系统中的演进型节点B(evolutional Node B，eNB或eNodeB)。
下面结合具体实施例介绍本申请的技术方案。
图2为本申请实施例通信处理方法的一个实施例示意图。请参阅图2，通信处理方法包括：
201、终端设备确定第一带宽的第一上行预编码矩阵。
其中，第一带宽为终端设备占用的上行带宽，用于终端设备传输上行数据。例如，第一带宽为5MHz(兆赫兹)。
第一带宽包括多个频域单元。该多个频域单元是网络设备调度终端设备进行上行传输的频域单元。具体该多个频域单元可以是第一带宽包括的部分或全部频域单元。一个频域单元可以包括一个或多个子带，或者，一个频域单元可以包括一个或多个资源块(resource block，RB)，或者，一个频域单元可以包括一个或多个资源单元(resource element，RE)，具体本申请不做限定。由于第一带宽包括多个频域单元，第一上行预编码矩阵可以理解为终端设备的上行宽带预编码矩阵。
在一些实施方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
在一种实现方式中，终端设备从网络设备获取第一带宽上的第一上行预编码矩阵的信息，从而确定该第一上行预编码矩阵。
202、网络设备根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵。
其中，第二上行预编码矩阵为终端设备在第二带宽上的期望上行预编码矩阵。第二带宽上的期望上行预编码矩阵是网络设备期望终端设备在第二带宽上采用的上行预编码矩阵。而由于环境中的噪声和干扰等因素的影响，终端设备得到的在第二带宽上的上行预编码矩阵与该第二带宽上的期望上行预编码矩阵之间可能会有偏差。
在步骤202之前，网络设备可以确定第一上行预编码矩阵和第二上行预编码矩阵，具体的确定过程分别请参阅后文图6和图7所示的实施例中的相关介绍。
第二带宽为第一带宽的子集。在一些实施例方式中，第二带宽为第一带宽包括的多个频域单元中的第i个频域单元。i为大于或等于N的整数，N为第一带宽包括的频域单元数。关于频域单元的相关介绍请参阅前文相关介绍。后文以第二带宽为第i个频域单元为例进行说明。
上述步骤202中，期望差分预编码矩阵与第一上行预编码矩阵以及第二上行预编码矩阵之间的关系有多种，下面介绍两种可能的实现方式。对于其他实现方式本申请仍适用，下述示出的实现方式并不属于对本申请的技术方案的限定。下述实现方式中，以第二带宽为第i个频域单元为例进行介绍。
第一种实现方式：ΔP UL_i＝g(P WB-P UL_i)，或者ΔP UL_i＝g(P UL_i-P WB)；
ΔP UL_i为终端设备在第i个频域单元上的期望差分预编码矩阵。P WB为终端设备在第一带宽上的第一上行预编码矩阵。P UL_i为第二上行预编码矩阵。第i个频域单元上的期望差分预编码矩阵是网络设备期望终端设备在第i个频域单元上采用的差分预编码矩阵。而由于环境中的噪声和干扰等因素的影响，终端设备确定的在第i个频域单元上的采用的差分预编码矩阵与该期望差分预编码矩阵之间可能会有偏差。
g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。g(P UL_i-P WB)表示对P UL_i-P WB进行归一化处理。例如，对P UL_i-P WB进行归一化处理包括：调整P UL_i-P WB的模，使得P UL_i-P WB的模值为1。
第二种实现方式：ΔP UL_i＝γ*P UL_i-P WB。
ΔP UL_i为终端设备在第i个频域单元上的期望差分预编码矩阵。P WB为终端设备在第一 带宽上的第一上行预编码矩阵。P UL_i为第二上行预编码矩阵。
在ΔP UL_i＝γ*P UL_i-P WB中，γ为实数。通过调整γ的大小，使得ΔP UL_i是归一化的。例如，通过调整γ使得ΔP UL_i的模值为1。
可选的，在步骤202之前，网络设备确定第一上行预编码矩阵和第二上行预编码矩阵，具体请参阅后文图6和图7所示的实施例的相关介绍，这里不赘述。
203、网络设备根据第二带宽上的期望差分预编码矩阵确定第一下行波束权值。
例如，第二带宽为第i个频域单元。网络设备调整用于发送第i个频域单元上的BF CSI-RS的第一下行波束权值P DL_i，使得第一下行波束权值P DL_i满足H DL_i*P DL_i＝ΔP UL_i。其中，H DL_i表示下行信道的信息，下行信道表征为网络设备在第i个频域单元上发送无线信号到终端设备的信道。ΔP UL_i为终端设备在第i个频域单元上的期望差分预编码矩阵。
下面介绍网络设备确定下行信道的信息H DL_i的过程：
终端设备在第i个频域单元上发送SRS。网络设备根据该SRS估计上行信道的信息。上行信道表征为终端设备在第i个频域单元上发送无线信号到网络设备的信道。然后，网络设备根据该上行信道的信息确定下行信道的信息H DL_i。
其中，网络设备根据该上行信道的信息确定下行信道的信息H DL_i有多种，下面示出两种可能的实现方式。
例如，在时分双工(time division duplexing，TDD)场景中，上行信道与下行信道之间具有互易性。因此，一个终端设备的下行信道可以等价为该终端设备的上行信道。网络设备将该上行信道的信息作为该下行信道的信息H DL_i。
例如，在频分双工(frequency division duplexing，FDD)场景中，上行信道与下行信道之间在角度时延域上具有互易性。网络设备可以根据上行信道与下行信道在角度时延域的互易性和该上行信道的信息确定该下行信道的信息H DL_i。
204、网络设备根据第一下行波束权值生成BF CSI-RS。
例如，网络设备采用第一下行波束权值P DL_i生成第二带宽上的BF CSI-RS。
205、网络设备在第二带宽上向终端设备发送BF CSI-RS。相应的，终端设备接收网络设备在第二带宽上发送的BF CSI-RS。
例如，网络设备在第二带宽上向终端设备发送BF CSI-RS。相应的，终端设备接收网络设备在第二带宽上发送的BF CSI-RS。
可选的，上述图2所示的实施例还包括步骤205a。
205a、网络设备向终端设备发送第一指示信息。
一种可能的实现方式中，第一指示信息用于指示终端设备采用差分码本模式。
其中，差分码本模式包括：第一上行预编码矩阵可以通过网络设备采用信令指示的方式配置，而终端设备在第二带宽上的差分预编码矩阵通过网络设备在第二带宽上发送的BF CSI-RS估计得到。终端设备根据第一上行预编码矩阵和差分预编码矩阵共同确定终端设备在第二带宽上的上行预编码矩阵。
需要说明的是，现有通信协议中定义有两种模式，分别为码本(codebook)模式和非码本(nonCodebook)模式。差分码本模式是本申请定义的一种新模式。需要说明的是，差分码本模式只是一种示例，具体本申请对该新模式的名称不做限定。例如，该新模式也可以称为码本2模式。后文以差分码本模式为例进行说明。基于本申请的技术方案，通信协 议可以定义三种模式，包括码本模式、非码本模式和差分码本模式。网络设备可以向终端设备发送第一指示信息，用于指示差分码本模式。终端设备可以采用差分码本模式确定第二带宽上的第三上行预编码矩阵，关于第三上行预编码矩阵的相关介绍请参阅步骤207的相关介绍。
另一种可能的实现方式中，第一指示信息用于指示终端设备开启差分码本功能。
其中，差分码本功能包括：终端设备通过网络设备在第二带宽上发送的BF CSI-RS得到第二带宽上的差分预编码矩阵。
例如，第一指示信息包括比特“1”，表示指示终端设备开启差分码本功能。第一指示信息包括比特“0”，表示指示终端设备不开启差分码本功能。
需要说明的是，现有通信协议中定义有两种模式，分别为码本模式和非码本模式。基于本申请的技术方案，在已有的码本模式下，进一步地，终端设备可以开启差分码本功能或不开启差分码本功能。网络设备可以向终端设备指示码本模式。进一步的，网络设备向终端设备发送第一指示信息，以指示终端设备开启差分码本功能。在该实现方式中，可以理解为码本模式又包括两种子模式，一种是差分码本模式(终端设备开启差分码本功能，对应于本申请定义的差分码本模式)，另一种是非差分码本模式(终端设备不开启差分码本功能，对应于现有通信协议中定义的码本模式)。那么终端设备可以确定采用差分码本模式确定第二带宽上的第三上行预编码矩阵，关于第三上行预编码矩阵的相关介绍请参阅步骤207的相关介绍。
可选的，第一指示信息承载于控制信令中。例如，控制信令可以包括无线资源控制(radio resource control，RRC)信令、DCI、或媒体接入控制控制元素(medium access control control element，MAC CE)，或者上述三种信令中的任意组合，具体本申请不做限定。
需要说明的是，步骤205a可以在步骤206之前执行。步骤205a与步骤201至步骤205之间没有固定的执行顺序，可以先执行步骤201至步骤205，再执行步骤205a；或者，先执行步骤205a，再执行步骤201至步骤205；或者，依据情况同时执行步骤201至步骤205和步骤205a，具体本申请不做限定。
206、终端设备基于BF CSI-RS得到终端设备在第二带宽上的差分预编码矩阵。
具体的，终端设备通过BF CSI-RS确定终端设备在第二带宽上的差分预编码矩阵。
在一些实施方式中，上述步骤206具体可以通过下述步骤206a和步骤206b实现。在步骤206a和步骤206b中，以第二带宽为第i个频域单元为例进行说明。
206a、终端设备测量网络设备在第i个频域单元上发送的BF CSI-RS，得到H DL_i*P DL_i；
其中，H DL_i表示下行信道的信息，下行信道表征为网络设备在第i个频域单元上发送无线信号到终端设备之间的信道。P DL_i为终端设备估计网络设备发送BF CSI-RS所采用的第一下行波束权值P DL_i；
206b、终端设备根据H DL_i*P DL_i确定差分预编码矩阵ΔP UL_i。
例如，终端设备对H DL_i*P DL_i进行归一化处理，得到终端设备在第二带宽上的差分预编码矩阵ΔP UL_i。具体的，终端设备对H DL_i*P DL_i的模进行调整，使得H DL_i*P DL_i的模为 1。
207、终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵。
第三上行预编码矩阵是终端设备确定的第二带宽的上行预编码矩阵。由于噪声和干扰等的影响，第三上行预编码矩阵与第二上行预编码矩阵之间可能会有偏差。
下面介绍终端设备确定得到第三上行预编码矩阵的两种可能的实现方式。对于其他实现方式本申请仍适用，具体本申请不做限定。
第一种实现方式：基于上述步骤202中，期望差分预编码矩阵与第一上行预编码矩阵以及第二上行预编码矩阵之间的关系的第一种实现方式，P UL_i＝P WB+f(ΔP UL_i)。
其中，P UL_i为终端设备确定的在第二带宽上的第三上行预编码矩阵，P WB为第一上行预编码矩阵，ΔP UL_i为终端设备确定的在第二带宽上的差分预编码矩阵。f(ΔP UL_i)＝2*cos(α i)*ΔP UL_i，α i＝π-β，β为P WB与ΔP UL_i之间的夹角。
例如，如图3所示，终端设备通过上述步骤201和步骤206可以确定向量
Figure PCTCN2022095911-appb-000001
和向量
Figure PCTCN2022095911-appb-000002
向量
Figure PCTCN2022095911-appb-000003
表示P WB，P WB为第一上行预编码矩阵。P WB是经过归一化处理的，这里以P WB的模值为1为例进行说明。向量
Figure PCTCN2022095911-appb-000004
表示ΔP UL_i，ΔP UL_i为终端设备确定的在第二带宽上的差分预编码矩阵。ΔP UL_i是经过归一化处理的。因此，ΔP UL_i的模值为1。终端设备可以获取P WB与ΔP UL_i之间的夹角为β。第三上行预编码矩阵P UL_i的模值为1，再结合上述步骤202期望差分预编码矩阵与第一上行预编码矩阵以及第二上行预编码矩阵之间的关系的第一种实现方式可知，P UL_i的起点为如图3所示的P WB的起点d，P UL_i的终点为向量
Figure PCTCN2022095911-appb-000005
与圆之间的交点b，即向量
Figure PCTCN2022095911-appb-000006
为终端设备估计的第三上行预编码矩阵P UL_i，P UL_i＝f(ΔP UL_i)＝2*cos(α i)*ΔP UL_i。
第二种可能的实现方式：基于上述步骤202中，期望差分预编码矩阵与第一上行预编码矩阵以及第二上行预编码矩阵之间的关系的第二种实现方式，P UL_i＝g(P WB+ΔP' UL_i)。
其中，P UL_i为终端设备确定的在第二带宽上的第三上行预编码矩阵，P WB为第一上行预编码矩阵。g(P WB+ΔP' UL_i)表示对(P WB+ΔP' UL_i)归一化处理。ΔP' UL_i＝g(ΔP UL_i)，ΔP UL_i为终端设备确定的在第二带宽上的差分预编码矩阵，g(ΔP UL_i)表示对ΔP UL_i归一化处理。
例如，如图4所示，终端设备通过上述步骤201和步骤206可以确定向量
Figure PCTCN2022095911-appb-000007
和向量
Figure PCTCN2022095911-appb-000008
向量
Figure PCTCN2022095911-appb-000009
表示P WB，P WB为第一带宽上的第一上行预编码矩阵。P WB为归一化处理的，这里以P WB的模值为1为例进行说明。向量
Figure PCTCN2022095911-appb-000010
表示ΔP UL_i，ΔP UL_i为终端设备确定的在第二带宽上的差分预编码矩阵。ΔP UL_i是经过归一化处理的。那么，终端设备可以确定向量
Figure PCTCN2022095911-appb-000011
等于 向量
Figure PCTCN2022095911-appb-000012
加上向量
Figure PCTCN2022095911-appb-000013
终端设备对向量
Figure PCTCN2022095911-appb-000014
进行归一化处理，得到第三上行预编码矩阵P UL_i。
在该实现方式中，终端设备通过对第三上行预编码矩阵的幅度进行缩放以满足ΔP UL_i的归一化。这样，终端设备可以初步确定向量
Figure PCTCN2022095911-appb-000015
的方向，再对向量
Figure PCTCN2022095911-appb-000016
进行归一化处理，得到P UL_i。
上述图3或图4所示的示例中，第i个频域单元可以是第i个子带。网络设备可以通过第i个子带的BF CSI-RS指示终端设备在第i个子带上的期望差分预编码矩阵。终端设备通过第i个子带的BF CSI-RS确定终端设备在第i个子带上的差分预编码矩阵。然后，终端设备可以结合第i个子带上的差分预编码矩阵和第一上行预编码矩阵确定第i个子带的第三上行预编码矩阵。有利于提升上行频谱效率，提升通信系统性能。
例如，由于噪声和干扰的影响，空口信号测量的抖动偏差角度为2β。若终端设备直接通过BF CSI-RS估计得到第二带宽的上行预编码矩阵，则可知终端设备得到的第二带宽的上行预编码矩阵的抖动偏差角度为2β。下面结合图5介绍终端设备采用本申请实施例的通信处理方法得到第三上行预编码矩阵的精度。如图5所示，向量
Figure PCTCN2022095911-appb-000017
表示第一带宽上的第一上行预编码矩阵P WB。若在没有噪声影响的情况下，终端设备基于第二带宽上的BF CSI-RS得到第二带宽的差分预编码矩阵为向量
Figure PCTCN2022095911-appb-000018
即ΔP' UL_i。也就是ΔP' UL_i是网络设备向终端设备指示的第二带宽上的期望差分预编码矩阵。因此，在没有噪声影响的情况下，终端设备根据P WB和ΔP' UL_i得到P' UL_i，即向量
Figure PCTCN2022095911-appb-000019
也就是P' UL_i是在没有噪声影响下，终端设备确定得到的第三上行预编码矩阵。
由于空口信号测量的抖动偏差角度为2β，终端设备通过第二带宽上的BF CSI-RS实际估计得到是ΔP” UL_i或ΔP”' UL_i，即向量
Figure PCTCN2022095911-appb-000020
或向量
Figure PCTCN2022095911-appb-000021
ΔP” UL_i与ΔP”' UL_i之间的夹角为2β。若终端设备确定第二带宽上的差分预编码矩阵为ΔP” UL_i，终端设备基于P WB和ΔP” UL_i得到P” UL_i，即向量
Figure PCTCN2022095911-appb-000022
若终端设备确定第二带宽上的差分预编码矩阵为ΔP”' UL_i。终端设备基于P WB和ΔP”' UL_i得到P”' UL_i。即向量
Figure PCTCN2022095911-appb-000023
由图5可知，ΔP” UL_i与ΔP”' UL_i之间的夹角为2β。由于圆心角始终是圆周角的两倍，因此P” UL_i与P”' UL_i之间的夹角为β。由此可知，终端设备通过本申请实施例的通信处理方法确定的第三上行预编码矩阵的抖动偏差角度为β。相比于终端设备直接通过BF CSI-RS估计得到第二带宽的上行预编码矩阵的抖动偏差角度2β来说，提高了空口的抗噪性，提高了第三上行预编码矩阵的精度，提升通信系统性能。
需要说明的是，上述步骤201至步骤207的过程是以终端设备确定一个数据流在第二带宽的第三上行预编码矩阵为例进行说明。
需要说明的是，可选的，第一带宽可以用于传输多个数据流的数据。第一上行预编码矩阵包括多个列向量，多个列向量分别为多个数据流对应的上行预编码向量。第一上行预编码矩阵的行向量代表终端设备的发送端口，第一上行预编码矩阵的行向量对应的发送端口用于传输该多个数据流。若第二带宽也用于传输该多个数据流的数据，那么第二带宽的 差分预编码矩阵包括多个列向量，多个列向量分别为多个数据流对应的差分预编码向量。差分预编码矩阵的一个行向量代表终端设备的一个发送端口。不同行向量对应的发送端口不同。差分预编码矩阵的行向量对应的发送端口用于传输该多个数据流。
例如，第一带宽可以用于传输五个数据流的数据。网络设备向终端设备指示第一带宽的第一上行预编码矩阵。第一上行预编码矩阵包括五个列向量，分别为五个数据流对应的宽带预编码向量。第一带宽包括第i个子带，第i个子带用于传输数据流1和数据流2的数据。网络设备向终端设备指示第i个子带上的期望差分预编码矩阵。该期望差分预编码矩阵包括两个列向量，第一个列向量代表数据流1在第i个子带上的期望差分预编码向量，第二个列向量代表数据流2在第i个子带上的期望差分预编码向量。该期望差分预编码矩阵的行向量代表终端设备的发送端口，差分预编码矩阵的行向量对应的发送端口用于传输第一数据流和第二数据流。
可选的，上述图2所示的实施例还包括步骤208至步骤209。步骤208至步骤209可以在步骤207之后执行。
208、终端设备根据第三上行预编码矩阵生成数据。
例如，网络设备以数据流为粒度指示第一上行预编码矩阵和第一带宽包括的多个频域单元的期望差分预编码矩阵。通过上述步骤201至步骤207，针对一个数据流，终端设备可以确定终端设备在第二带宽上的第三上行预编码矩阵。终端设备可以在第二带宽上根据第二带宽上的第三上行预编码矩阵生成该数据流的数据。
209、终端设备在第二带宽上向网络设备发送数据。相应的，网络设备接收终端设备在第二带宽上发送的数据。
例如，第二带宽为第i个频域单元，终端设备在第i个频域单元上向网络设备发送数据。相应的，网络设备接收终端设备在该第i个频域单元上发送的数据。
由此可知，终端设备从网络设备获取第一上行预编码矩阵。该第一上行预编码矩阵可以是网络设备通过码字的索引向终端设备指示的，索引可以采用比特的方式传输。因此，终端设备确定的第一上行预编码矩阵是精确的。终端设备根据第一上行预编码矩阵和第二带宽上的差分预编码矩阵共同确定终端设备在第二带宽上的第三上行预编码矩阵。终端设备在第二带宽上根据第三上行预编码矩阵生成数据，并发送数据。提升了通信传输性能。
本申请实施例中，终端设备确定第一带宽的第一上行预编码矩阵。终端设备接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集。终端设备基于BF CSI-RS得到终端设备在第二带宽上的差分预编码矩阵；终端设备根据第一上行预编码矩阵和差分预编码矩阵确定终端设备在第二带宽上的第三上行预编码矩阵。由上述方案可知，终端设备确定的第一上行预编码矩阵是精确的。因此。终端设备根据第一上行预编码矩阵和第二带宽的差分预编码矩阵共同确定终端设备在第二带宽上的第三上行预编码矩阵。从而提高空口的抗噪性，提高了终端设备确定的第三上行预编码矩阵的精度，提升了通信系统性能。
需要说明的是，上述图2所示的实施例仅仅示出了终端设备确定终端设备在第二带宽上的第三上行预编码矩阵的过程。对于第一带宽包括的其他带宽的上行预编码矩阵的确定过程同样类似。例如，第一带宽还包括第三带宽。第三带宽与第二带宽类似，具体可以参 阅前文第二带宽的相关介绍。网络设备根据第一上行预编码矩阵和第五上行预编码矩阵确定终端设备在第三带宽上的期望差分预编码矩阵。其中，第五上行预编码矩阵为终端设备在第三带宽上的期望上行预编码矩阵。网络设备根据第三带宽上的期望差分预编码矩阵确定第二下行波束权值。其中，第二下行波束权值用于网络设备发送第三带宽上的BF CSI-RS。网络设备根据第二下行波束权值生成第三带宽上的BF CSI-RS。网络设备在第三带宽上发送BF CSI-RS。终端设备基于第三带宽上的BF CSI-RS得到终端设备在第三带宽上的差分预编码矩阵。终端设备根据第一上行预编码矩阵和第三带宽上的差分预编码矩阵估计终端设备在第三带宽上的上行预编码矩阵。
在一些实施方式中，上述图2所示的实施例中的步骤201可以通过图6所示的实施例中的步骤601实现。
图6为本申请实施例通信处理方法的另一个实施例示意图。请参阅图6，通信处理方法包括：
601、网络设备向终端设备发送第二指示信息。相应的，终端设备接收来自网络设备的第二指示信息。
其中，第二指示信息用于指示第一带宽的第一上行预编码矩阵。
在一些实施方式中，第二指示信息可以承载于控制信令中。例如，控制信令包括RRC信令、DCI或MAC CE，或者上述三种信令中的任意组合。
可选的，第一上行预编码矩阵属于预编码码本的一个码字。预编码码本中的每个码字都有对应的索引，第二指示信息用于指示该码字，可以是该码字的索引。
在该实现方式中，网络设备通过第二指示信息指示终端设备在第一带宽的第一上行预编码矩阵。
可选的，上述图6所示的实施例还包括步骤601a。步骤601a可以在步骤601之前执行。
601a、网络设备确定第一上行预编码矩阵。
下面结合步骤6001和步骤6002介绍上述步骤601a。
步骤6001：网络设备确定第一矩阵集合；
其中，第一矩阵集合包括多个期望上行预编码矩阵。多个期望上行预编码矩阵分别是终端设备在第一带宽包括的多个频域单元的期望上行预编码矩阵。
期望上行预编码矩阵是网络设备期望终端设备在对应的频域单元上采用的上行预编码矩阵。而由于环境中的噪声和干扰等因素的影响，终端设备确定的该频域单元上的上行预编码矩阵与网络设备期望在该频域单元采用的期望上行预编码矩阵可能会有偏差。
需要说明的是，终端设备在一个频域单元上可以传输多个数据流的数据。每个数据流对应一个上行预编码向量。该频域单元的期望上行预编码矩阵中的每个列向量代表一个数据流对应的上行预编码向量，不同列向量为不同数据流的上行预编码向量。该频域单元的期望上行预编码矩阵中的每个行向量代表终端设备的一个发送端口。不同行向量对应的发送端口不同。期望上行预编码矩阵的行向量分别对应的发送端口用于传输该多个数据流在该频域单元上的数据。
例如，网络设备调度调度终端设备进行上行传输的频域单元包括第一带宽的第1个频 域单元和第2个频域单元。网络设备在第一带宽的第1个频域单元和第2个频域单元调度终端设备传输数据流1至数据流3的数据。那么，第一矩阵集合包括两个期望上行预编码矩阵。那么，在该两个期望上行预编码矩阵中，第1个频域单元的期望上行预编码矩阵为
Figure PCTCN2022095911-appb-000024
第2个频域单元的期望上行预编码矩阵为
Figure PCTCN2022095911-appb-000025
中的第一个列向量为数据流1在第1个频域单元的期望上行预编码向量，第一个行向量对应终端设备的发送端口1。第二个列向量为数据流2在第1个频域单元的期望上行预编码向量，第二个行向量对应终端设备的发送端口2。第三个列向量为数据流3在第1个频域单元的期望上行预编码矩阵，第三个行向量对应终端设备的发送端口3。发送端口1、发送端口2和发送端口3用于传输数据流1、数据流2和数据流3在第1个频域单元的数据。
Figure PCTCN2022095911-appb-000026
中的第一个列向量为数据流1在第2个频域单元的期望上行预编码向量，第一个行向量对应终端设备的发送端口1。第二个列向量为数据流2在第2个频域单元的期望上行预编码向量，第二个行向量对应终端设备的发送端口2。第三个列向量为数据流3在第3个频域单元的期望上行预编码矩阵，第三个行向量对应终端设备的发送端口3。
关于网络设备确定第一矩阵集合的过程请参阅后文图7所示的实施例的相关介绍，这里不再赘述。
步骤6002：网络设备根据第一矩阵集合确定第一上行预编码矩阵。发送端口1、发送端口2和发送端口3用于传输数据流1、数据流2和数据流3在第2个频域单元上的数据。
在上述步骤6002中，网络设备确定第一上行预编码矩阵的方式有多种，下面介绍两种可能的实现方式。对于其他实现方式本申请仍适用，具体本申请不做限定。
下面结合步骤6002a和步骤6002b介绍第一种实现方式。
6002a、网络设备对第一矩阵集合包括的多个期望上行预编码矩阵进行处理，得到第四上行预编码矩阵。
下面介绍网络设备得到第四上行预编码矩阵的两种实现方式。
首先，结合步骤1至步骤2介绍上述第一实现方式。
步骤1、网络设备将第一矩阵集合包括的多个期望上行预编码矩阵中同一数据流对应的列向量中相同位置的元素进行相加，得到每个数据流对应的第一目标列向量；
例如，第一矩阵集合包括两个期望上行预编码矩阵，分别为第1个频域单元的期望上行预编码
Figure PCTCN2022095911-appb-000027
和第2个频域单元的期望上行预编码矩阵
Figure PCTCN2022095911-appb-000028
由上述步骤6001的示例可知，数据流1对应的列向量包括频域单元1的期望上行预编码矩阵的第一个列向量
Figure PCTCN2022095911-appb-000029
和频域单元2的期望上行预编码矩阵的第一个列向量
Figure PCTCN2022095911-appb-000030
那么可知，数 据流1对应的第一目标列向量为
Figure PCTCN2022095911-appb-000031
数据流2对应的第一目标列向量和数据流3对应的第一目标列向量的计算过程类似。即数据流2对应的第一目标列向量为
Figure PCTCN2022095911-appb-000032
数据流3对应的第一目标向量为
Figure PCTCN2022095911-appb-000033
步骤2、网络设备对每个数据流对应的第一目标列向量进行归一化处理，再将经过归一化处理的每个数据流对应的第一目标列向量组成第四上行预编码矩阵。
例如，网络设备将数据流1对应的第一目标列向量
Figure PCTCN2022095911-appb-000034
的模值、数据流2对应的第一目标列向量
Figure PCTCN2022095911-appb-000035
的模值和数据流3对应的第一目标向量
Figure PCTCN2022095911-appb-000036
的模值分别调整为1。然后，网络设备按照数据流1至数据流3的顺序将经过归一化处理的数据流对应的第一目标列向量作为矩阵的一个列向量组成得到第一预编码矩阵。
下面结合步骤1’和步骤2’介绍第二种实现方式。
步骤1’、网络设备将第一矩阵集合包括的多个期望上行预编码矩阵中同一数据流对应的列向量相加，得到每个数据流对应的第二目标列向量；
例如，由上述步骤6001的示例可知，数据流1对应的列向量包括频域单元1的期望上行预编码矩阵的第一个列向量
Figure PCTCN2022095911-appb-000037
和频域单元2的期望上行预编码矩阵的第一个列向量
Figure PCTCN2022095911-appb-000038
数据流1对应的第二目标列向量为
Figure PCTCN2022095911-appb-000039
数据流2对应的第二目标列向量和数据流3对应的第二目标列向量的计算过程类似。即数据流2对应的第二目标列向量为
Figure PCTCN2022095911-appb-000040
数据流3对应的第二目标向量为
Figure PCTCN2022095911-appb-000041
步骤2’、网络设备对每个数据流对应的第二目标列向量进行归一化处理，再将经过归一化处理的每个数据流对应的第二目标列向量组成第四上行预编码矩阵。
例如，网络设备将数据流1对应的第二目标列向量的模值、数据流2对应的第一目标列向量的模值和数据流3对应的第二目标向量的模值分别调整为1。然后，网络设备按照数据流1至数据流3的顺序将经过归一化处理的数据流对应的第二目标列向量作为矩阵的一个列向量组成得到第一预编码矩阵。
6002b、网络设备从预编码码本中选择与第四上行预编码矩阵的相关性最高的码字作为第一上行预编码矩阵。
上述步骤6002b中，第一上行预编码矩阵为预编码码本中与第四上行预编码矩阵的相关性最高的码字。
需要说明的是，可选的，向量1表示预编码码本中的一个码字的第一个列向量(需要说明的是，码字是上行预编码矩阵)。该码字的第一个列向量是第一带宽上数据流1对应的列向量。向量2为第四上行预编码矩阵的第一个列向量。第四预编码矩阵的第一个列向量是第一带宽上数据流1对应的列向量。向量1和向量2是经过归一化处理的。该向量1与向量2之间的相关性可以通过向量2的共轭转置与向量1的乘积的模值表征。向量2的共轭转置与向量1的乘积的模值越接近1，向量1与向量2的相关性越高。例如，向量2的共轭转置与向量1的乘积的模值大于或等于0.9，则可以认为该向量1与向量2的相关性较高。对于该码字的其他列向量与第四上行预编码矩阵的对应列向量之间的相关性的判断方法同样适用，这里不再赘述。终端设备确定每个码字包括的列向量与第四上行预编码矩阵的对应列向量的相关性之和，为了描述方便，码字包括的列向量与第四上行预编码矩阵的对应列向量的相关性之和称为该码字与第四上行预编码矩阵的相关性。码字包括的列向量与第四上行预编码矩阵的对应列向量的相关性之和越大，则认为该码字与第四上行预编码矩阵的相关性越高。终端设备选择与第四上行预编码矩阵的相关性最高的码字。
由此可知，第四上行预编码矩阵是网络设备实际确定终端设备在第一带宽上的上行预编码矩阵。而网络设备采用基于码本的方式向终端设备指示第一带宽的上行预编码矩阵。因此，第一上行预编码矩阵可以是预编码码本中与第四上行预编码矩阵最接近的码字。然后网络设备向终端设备指示该码字的索引。以便于终端设备通过该索引确定该码字。这样网络设备用于指示终端设备的第一带宽的上行预编码矩阵的指示开销较小。
上述第一种实现方式中，网络设备确定第一上行预编码矩阵的过程较为简单，复杂度较低，为方案的实施提供基础，提高了方案的实用性。
下面结合步骤6002a’和步骤6002b’介绍第二种实现方式。
6002a’、网络设备确定预编码码本中的每个码字分别与第一矩阵集合包括的多个期望上行预编码矩阵的相关性之和。
关于码字与上行预编码矩阵的相关性请参阅前述步骤6002b的相关介绍，这里不再赘述。
6002b’、网络设备将相关性之和最大的码字作为第一上行预编码矩阵。
为了描述方便，码字分别与第一矩阵集合包括的多个期望上行预编码矩阵的相关性之 和可以简称为该码字的相关性之和。例如，预编码码本包括码字A和码字B，第一矩阵集合包括矩阵1和矩阵2。那么，码字A的相关性之和为码字A与矩阵1的相关性和码字A与矩阵2的相关性。码字B的相关性之和为码字B与矩阵1的相关性和码字B与矩阵2的相关性。若码字A的相关性之和大于码字B的相关性之和，那么网络设备将码字A作为第一上行预编码矩阵。
网络设备通过上述第二种实现方式确定得到第一上行预编码矩阵更优化。有利于为终端设备指示为匹配终端设备与网络设备之间的上行信道条件的第一上行预编码矩阵。
下面结合图7介绍网络设备确定第一矩阵集合的过程。
图7为本申请实施例通信处理方法的另一个实施例示意图。请参阅图7，通信处理方法包括：
701、网络设备接收来自多个终端设备的SRS。
具体的，多个终端设备中的每个终端设备分别在第一带宽上的全部或部分频域单元向网络设备发送SRS。相应的，网络设备分别在第一带宽上的全部或部分频域单元接收来自多个终端设备中的每个终端设备的SRS。值得说明的是，不同的终端设备可以分别在第一带宽的相同或不同的频域单元发送SRS。
702、网络设备根据多个终端设备的SRS估计多个终端设备中各个终端设备的上行信道。
其中，每个终端设备的上行信道包括该终端设备在第一带宽的各个频域单元上发送无线信号到网络设备之间的信道。
703、网络设备根据多个终端设备的上行信道从多个终端设备选择待调度的终端设备，并确定第二矩阵集合。
第二矩阵集合包括该待调度的终端设备中各个终端设备在第一带宽中的第一频域单元上的期望上行预编码矩阵。
第一频域单元是网络设备待调度该终端设备的频域单元。第一频域单元包括至少两个频域单元。第一频域单元包括的频域单元数小于或等于第一带宽包括的频域单元数。待调度的终端设备包括多个终端设备的部分或全部终端设备。
对于不同终端设备来说，第一频域单元可以相同也可以不相同。具体由网络设备决定待调度的终端设备中每个终端设备对应的第一频域单元。
例如，待调度的终端设备包括终端设备1和终端设备2，网络设备将在第一带宽的第1个频域单元和第2个频域单元调度终端设备1，网络设备将在第一带宽的第3个频域单元和第4个频域单元调度终端设备2。
第二矩阵集合包括该待调度的终端设备中各个终端设备在第一带宽中的第一频域单元上的期望上行预编码矩阵。第二矩阵集合包括上述图6所示的实施例中的步骤6001的第一矩阵集合包括的多个期望上行预编码矩阵。关于第一矩阵集合的相关介绍请参阅图6的相关介绍。第二矩阵集合包括上述图2所示的实施例中步骤202的第二上行预编码矩阵。关于第二上行预编码矩阵的相关介绍请参阅图2的相关介绍。
具体的，网络设备按照预设算法和多个终端设备的上行信道从多个终端设备选择待调度的终端设备，并确定第二矩阵集合。
在一些实施方式中，预设算法包括迫零(zero force，ZF)算法或最小均方误差(minimum mean squared error，MMSE)算法。上述预设算法的优化目标可以包括以下至少一项：系统的吞吐量最大、数据包时延最小、或用户体验公平性最高。
下面对本申请实施例提供的通信处理装置进行描述。图8为本申请实施例通信处理装置的一个结构示意图。请参阅图8，通信处理装置800可以用于执行上述图2和图6所示的实施例中终端设备执行的步骤，可以参考上述方法实施例中的相关描述。
通信处理装置800包括处理模块801和收发模块802。
处理模块801，用于确定第一带宽的第一上行预编码矩阵；
收发模块802，用于接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集；
处理模块801，用于基于BF CSI-RS得到通信处理装置在第二带宽上的差分预编码矩阵；根据第一上行预编码矩阵和差分预编码矩阵确定通信处理装置在第二带宽上的第三上行预编码矩阵。
一种可能的实现方式中，处理模块801具体用于：
接收来自网络设备的DCI，DCI用于指示第一上行预编码矩阵。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；处理模块801具体用于：
测量BF CSI-RS，得到H DL_i*P DL_i；H DL_i表示第i个频域单元的下行信道，下行信道为通信处理装置估计的在第i个频域单元上网络设备到通信处理装置之间的下行信道；P DL_i为通信处理装置估计网络设备发送BF CSI-RS所采用的下行波束权值P DL_i；根据H DL_i*P DL_i确定差分预编码矩阵ΔP UL_i。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；P UL_i＝P WB+f(ΔP UL_i)；
其中，P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵，ΔP UL_i为差分预编码矩阵，f(ΔP UL_i)＝2*cos(α i)*ΔP UL_i，α i＝π-β，β为P WB与ΔP UL_i之间的夹角。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为所述第一带宽包括的频域单元数；P UL_i＝g(P WB+ΔP' UL_i)；
其中，P UL_i为第三上行预编码矩阵，P WB为第一上行预编码矩阵，g(P WB+ΔP' UL_i)表示对(P WB+ΔP' UL_i)归一化处理；
ΔP' UL_i＝g(ΔP UL_i)，ΔP UL_i为差分预编码矩阵，g(ΔP UL_i)表示对ΔP UL_i归一化处理。
另一种可能的实现方式中，收发模块802还用于：
接收来自网络设备的第一指示信息，第一指示信息用于指示通信处理装置采用差分码本模式。
另一种可能的实现方式中，收发模块802还用于：
接收来自网络设备的第一指示信息，第一指示信息用于指示通信处理装置开启差分码本功能。
本申请实施例中，处理模块801，用于确定第一带宽的第一上行预编码矩阵；收发模块802，用于接收网络设备在第二带宽上发送的BF CSI-RS，第二带宽为第一带宽的子集；处理模块801，用于基于BF CSI-RS得到通信处理装置在第二带宽上的差分预编码矩阵；根据第一上行预编码矩阵和差分预编码矩阵确定通信处理装置在第二带宽上的第三上行预编码矩阵。处理模块801确定的第一上行预编码矩阵是精确的。处理模块801根据第一上行预编码矩阵和差分预编码矩阵共同确定终端设备在第二带宽上的第三上行预编码矩阵。从而提高空口的抗噪性，提高第三上行预编码矩阵的精度，从而提升通信系统性能。
下面对本申请实施例提供的通信处理装置进行描述。图9为本申请实施例通信处理装置的一个结构示意图。请参阅图9，通信处理装置900可以用于执行上述图2、图6和图7所示的实施例中网络设备执行的步骤，可以参考上述方法实施例中的相关描述。
通信处理装置900包括收发模块901和处理模块902。
收发模块901，用于向终端设备发送第二指示信息，第指示信息用于指示第一带宽的第一上行预编码矩阵；
处理模块902，用于根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，第二上行预编码矩阵是终端设备在第二带宽上的期望上行预编码矩阵，第二带宽为第一带宽的子集；根据期望差分预编码矩阵确定第一下行波束权值；根据第一下行波束权值生成BF CSI-RS；在第二带宽上向终端设备发送BF CSI-RS，BF CSI-RS用于终端设备估计期望差分预编码矩阵。
一种可能的实现方式中，收发模块901具体用于：向终端设备发送DCI，DCI用于指示第一上行预编码矩阵。
另一种可能的实现方式中，第一上行预编码矩阵属于预编码码本中的一个码字。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；
ΔP UL_i＝g(P WB-P UL_i)，ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；
ΔP UL_i＝γ*P UL_i-P WB；ΔP UL_i为期望差分预编码矩阵，P WB为第一上行预编码矩阵，P UL_i为第二上行预编码矩阵，γ为实数，通过γ的调整使得ΔP UL_i是归一化的。
另一种可能的实现方式中，第二带宽为第i个频域单元，i为大于或等于1且小于或等于N的整数，N为第一带宽包括的频域单元数；
H DL_i*P DL_i＝ΔP UL_i，H DL_i表示下行信道，下行信道为终端设备在第i个频域单元上通信处理装置到终端设备之间的下行信道，P DL_i为第一下行波束权值，ΔP UL_i为期望差分预编码矩阵。
另一种可能的实现方式中，收发模块901还用于：向终端设备发送第一指示信息，第 一指示信息用于指示终端设备采用差分码本模式。
另一种可能的实现方式中，收发模块901还用于：向终端设备发送第一指示信息，第一指示信息用于使能终端设备开启差分码本功能。
本申请实施例中，收发模块901，用于向终端设备发送第二指示信息，第二指示信息用于指示第一带宽的第一上行预编码矩阵；处理模块902，用于根据第一上行预编码矩阵和第二上行预编码矩阵确定终端设备在第二带宽上的期望差分预编码矩阵，第二上行预编码矩阵是终端设备在第二带宽上的期望上行预编码矩阵，第二带宽为第一带宽的子集；根据期望差分预编码矩阵确定第一下行波束权值；根据第一下行波束权值生成BF CSI-RS；在第二带宽上向终端设备发送BF CSI-RS，BF CSI-RS用于终端设备估计期望差分预编码矩阵。收发模块901向终端设备发送第二指示信息，以指示第一带宽的第一上行预编码矩阵。那么，终端设备确定的第一上行预编码矩阵是精确的。BF CSI-RS用于终端设备估计期望差分预编码矩阵。终端设备可以根据第一上行预编码矩阵和在第二带宽上的差分预编码矩阵确定在第二带宽上的第三上行预编码矩阵。从而提高空口的抗噪性，提高了终端设备确定的第三上行预编码矩阵的精度，提升了通信系统性能。
下面通过图10示出终端设备的一种可能的结构示意图。
图10示出了一种简化的终端设备的结构示意图。为了便于理解和图示方式，图10中，终端设备以手机作为例子。如图10所示，终端设备包括处理器、存储器、射频电路、天线及输入输出装置。
处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。
存储器主要用于存储软件程序和数据。
射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。
天线主要用于收发电磁波形式的射频信号。
输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对数据进行处理。
为便于说明，图10中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。如图10所示，终端设备包括收发单元1010和处理单元1020。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。
可选的，可以将收发单元1010中用于实现接收功能的器件视为接收单元，将收发单元1010中用于实现发送功能的器件视为发送单元，即收发单元1010包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元1010用于执行上述方法实施例中终端设备的发送操作和接收操作，处理单元1020用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
一种可能的实现方式，处理单元1020用于执行上述图2所示的实施例中的步骤201、步骤206和步骤207，收发单元1010用于执行上述图2所示的实施例中的步骤205。
可选的，处理单元1020用于执行上述图2所示的实施例中的步骤208。收发单元1010还用于执行上述图2所示的实施例中的步骤205a和步骤209。
另一种可能的实现方式中，收发单元1010用于执行上述图2所示的实施例中的步骤601。
当终端设备为芯片时，芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路或通信接口；处理单元为芯片上集成的处理器或者微处理器或者集成电路或者逻辑电路。上述方法实施例中，发送操作对应输入输出电路的输出，接收操作对应输入输出电路的输入。
本申请还提供一种通信处理装置，请参阅图11，本申请实施例中通信处理装置1100的另一个结构示意图。
通信处理装置1100包括：处理器1101、存储器1102和收发器1103。
处理器1311、存储器1102和收发器1103分别通过总线相连，存储器中存储有计算机指令。
当通信处理装置1100为网络设备，或网络设备内的芯片时，通信处理装置1100可以用于执行图2、图6和图7所示的实施例中网络设备执行的步骤。可以参考上述方法实施例中的相关描述。
前述图9所示的收发模块901则具体可以是收发器1103，因此，收发器1103的具体实现不再赘述。前述图9所示的处理模块902则具体可以是处理器1101，因此，处理器1101的具体实现不再赘述。
当通信处理装置1100为终端设备，或终端设备内的芯片时，通信处理装置1100可以用于执行上述图2和图6所示的实施例中终端设备执行的步骤。可以参考上述方法实施例中的相关描述。
前述图8所示的收发模块802则具体可以是本实施例中的收发器1103，因此，收发器1103的具体实现不再赘述。前述图8所示的处理模块801则具体可以是本实施例中的处理器1101，因此，处理器1101的具体实现不再赘述。
本申请实施例还提供一种通信处理系统。请参阅图12，图12为本申请实施例通信处理系统的一个示意图。通信处理系统包括网络设备和终端设备。网络设备用于执行如图2、图6和图7所示的实施例中网络设备执行的全部或部分步骤。终端设备用于执行如图2和图6所示的实施例中终端设备执行的全部或部分步骤。
本申请实施例还提供一种包括计算机指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如上述图2、图6和图7所示的实施例的通信处理方法。
本申请实施例还提供了一种计算机可读存储介质，包括计算机指令，当计算机指令在计算机上运行时，使得计算机执行如上述图2、图6和图7所示的实施例的通信处理方法。
本申请实施例还提供一种芯片装置，包括处理器，用于调用存储器中存储的计算机程序，以使得处理器执行上述图2、图6和图7所示的实施例的通信处理方法。
可选的，处理器通过接口与存储器耦合。
可选的，芯片装置还包括存储器，存储器中存储有计算机程序。
上述任一处提到的处理器，可以是一个通用中央处理器，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制上述图2、图6和图7所示的实施例的通信处理方法的程序执行的集成电路。
上述任一处提到的存储器可以为只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。
另外需说明的是，以上所描述的装置实施例仅仅是示意性的，其中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模块来实现本实施例方案的目的。另外，本申请提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下，凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现，而且，用来实现同一功能的具体硬件结构也可以是多种多样的，例如模拟电路、数字电路或专用电路等。但是，对本申请而言更多情况下软件程序实现是更佳的实施方式。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可以以软件产品的形式体现出来，计算机软件产品存储在可读取的存储介质中，如计算机的软盘、U盘、移动硬盘、ROM、RAM、磁碟或者光盘等，包括若干指令用以使得一台计算机设备执行本申请各个实施例的方法。
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。
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计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。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。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计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、网络设备、或本地计算设备、计算设备或数据中心通过有线(例如同轴电缆、光纤、数字用户线(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、网络设备、或本地计算设备、计算设备或数据中心进行传输。计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的网络设备、或本地计算设备、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(Solid State Disk，SSD))等。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”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，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”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。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应理解到，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，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。
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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本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技术方案的全部或部分可以以软件产品的形式体现出来，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方法的全部或部分步骤。
总之，以上所述仅为本申请技术方案的较佳实施例而已，并非用于限定本申请的保护 范围。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (31)

  1. 一种通信处理方法，其特征在于，所述方法包括：
    终端设备确定第一带宽的第一上行预编码矩阵；
    所述终端设备接收所述网络设备在第二带宽上发送的波束赋形信道状态信息参考信号BF CSI-RS，所述第二带宽为所述第一带宽的子集；
    所述终端设备基于所述BF CSI-RS得到所述终端设备在所述第二带宽上的差分预编码矩阵；
    所述终端设备根据所述第一上行预编码矩阵和所述差分预编码矩阵确定所述终端设备在所述第二带宽上的第三上行预编码矩阵。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备确定第一带宽的第一上行预编码矩阵，包括：
    所述终端设备接收来自网络设备的下行控制信息DCI，所述DCI用于指示所述第一上行预编码矩阵。
  3. 根据权利要求1所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；
    所述终端设备基于所述BF CSI-RS得到所述终端设备在所述第二带宽上的差分预编码矩阵，包括：
    所述终端设备测量所述BF CSI-RS，得到H DL_i*P DL_i；
    所述H DL_i表示所述第i个频域单元的下行信道，所述下行信道为所述终端设备估计的在所述第i个频域单元上所述网络设备到所述终端设备之间的下行信道；
    所述P DL_i为所述终端设备估计的所述网络设备发送所述BF CSI-RS所采用的下行波束权值P DL_i；
    所述终端设备根据所述H DL_i*P DL_i确定所述差分预编码矩阵 ΔP UL_i。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述终端设备根据所述第一上行预编码矩阵和所述差分预编码矩阵确定所述终端设备在所述第二带宽上的第三上行预编码矩阵，包括：所述终端设备根据以下方式确定所述第三上行预编码矩阵：
    P UL_i＝P WB+f( ΔP UL_i)；
    其中，所述P UL_i为所述第三上行预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述 ΔP UL_i为所述差分预编码矩阵，f( ΔP UL_i)＝2*cos(α i)* ΔP UL_i，α i＝π-β，β为所述P WB与所述 ΔP UL_i之间的夹角。
  5. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述终端设备根据所述第一上行预编码矩阵和所述差分预编码矩阵确定所述终端设备在所述第二带宽上的第三上行预编码矩阵，包括：所述终端设备根据以下方式确定所述第三上行预编码矩阵：
    P UL_i＝g(P WB+ ΔP' UL_i)；
    其中，所述P UL_i为所述第三上行预编码矩阵，所述P WB为所述第一上行预编码矩阵，
    所述g(P WB+ ΔP' UL_i)表示对(P WB+ ΔP' UL_i)归一化处理；
    所述 ΔP' UL_i＝g( ΔP UL_i)，所述 ΔP UL_i为所述差分预编码矩阵，g( ΔP UL_i)表示对 ΔP UL_i归一化处理。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述网络设备的无线资源控制RRC信令，所述RRC信令用于指示所述终端设备采用差分码本模式。
  7. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述终端设备开启差分码本功能。
  8. 一种通信处理方法，其特征在于，所述方法包括：
    网络设备向终端设备发送第一指示信息，所述第一指示信息用于指示第一带宽的第一上行预编码矩阵；
    所述网络设备根据所述第一上行预编码矩阵和第二上行预编码矩阵确定所述终端设备在第二带宽上的期望差分预编码矩阵，所述第二上行预编码矩阵是所述终端设备在所述第二带宽上的期望上行预编码矩阵，所述第二带宽为所述第一带宽的子集；
    所述网络设备根据所述期望差分预编码矩阵确定下行波束权值；
    所述网络设备根据所述下行波束权值生成波束赋形信道状态信息参考信号BF CSI-RS；
    所述网络设备在所述第二带宽上向所述终端设备发送所述BF CSI-RS，所述BF CSI-RS用于所述终端设备估计所述期望差分预编码矩阵。
  9. 根据权利要求8所述的方法，其特征在于，所述网络设备向终端设备发送指示信息，包括：
    所述网络设备向所述终端设备发送下行控制信息DCI，所述DCI用于指示所述第一上行预编码矩阵。
  10. 根据权利要求8或9所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述网络设备根据所述第一上行预编码矩阵和第二上行预编码矩阵确定所述终端设备在第二带宽上的期望差分预编码矩阵，包括：所述网络设备根据以下方式确定所述差分预编码矩阵；
    ΔP UL_i＝g(P WB-P UL_i)，所述 ΔP UL_i为所述期望差分预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述P UL_i为第二上行预编码矩阵，g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。
  11. 根据权利要求8或9所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述网络设备根据所述第一上行预编码矩阵和第二上行预编码矩阵确定所述终端设备在第二带宽上的期望差分预编码矩阵，包括：所述网络设备根据以下方式确定所述差分预编码 矩阵；
    ΔP UL_i＝γ*P UL_i-P WB；
    所述 ΔP UL_i为所述期望差分预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述P UL_i为第二上行预编码矩阵，所述γ为实数，通过所述γ的调整使得所述 ΔP UL_i是归一化的。
  12. 根据权利要求8至11中任一项所述的方法，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述网络设备根据所述期望差分预编码矩阵确定下行波束权值，包括：所述终端设备根据以下方式确定所述下行波束权值；
    H DL_i*P DL_i＝ ΔP UL_i，所述H DL_i表示下行信道，所述下行信道为所述终端设备在所述第i个频域单元上所述网络设备到所述终端设备之间的下行信道，所述P DL_i为所述下行波束权值，所述 ΔP UL_i为所述期望差分预编码矩阵。
  13. 根据权利要求8至12中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送无线资源控制RRC信令，所述RRC信令用于指示所述终端设备采用差分码本模式。
  14. 根据权利要求8至12中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送第二指示信息，所述第二指示信息用于使能所述终端设备开启差分码本功能。
  15. 一种通信处理装置，其特征在于，所述通信处理装置包括：
    处理模块，用于确定第一带宽的第一上行预编码矩阵；
    收发模块，用于接收所述网络设备在第二带宽上发送的波束赋形信道状态信息参考信号BF CSI-RS，所述第二带宽为所述第一带宽的子集；
    所述处理模块，还用于基于所述BF CSI-RS得到所述通信处理装置在所述第二带宽上的差分预编码矩阵；根据所述第一上行预编码矩阵和所述差分预编码矩阵确定所述通信处理装置在所述第二带宽上的第三上行预编码矩阵。
  16. 根据权利要求15所述的通信处理装置，其特征在于，所述处理模块具体用于：
    接收来自网络设备的下行控制信息DCI，所述DCI用于指示所述第一上行预编码矩阵。
  17. 根据权利要求15或16所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：
    测量所述BF CSI-RS，得到H DL_i*P DL_i；所述H DL_i表示所述第i个频域单元的下行信道，所述下行信道为所述通信处理装置估计的在所述第i个频域单元上所述网络设备到所述通信处理装置之间的下行信道；所述P DL_i为所述通信处理装置估计所述网络设备发送所述BF CSI-RS所采用的下行波束权值P DL_i；
    根据所述H DL_i*P DL_i确定所述差分预编码矩阵 ΔP UL_i。
  18. 根据权利要求15至17中任一项所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：根据以下方式确定所述第三上行预编码矩 阵；
    P UL_i＝P WB+f( ΔP UL_i)；
    其中，所述P UL_i为所述第三上行预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述 ΔP UL_i为所述差分预编码矩阵，f( ΔP UL_i)＝2*cos(α i)* ΔP UL_i，α i＝π-β，β为所述P WB与所述 ΔP UL_i之间的夹角。
  19. 根据权利要求15至17中任一项所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：根据以下方式确定所述第三上行预编码矩阵；
    P UL_i＝g(P WB+ ΔP' UL_i)；
    其中，所述P UL_i为所述第三上行预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述g(P WB+ ΔP' UL_i)表示对(P WB+ ΔP' UL_i)归一化处理；
    所述 ΔP' UL_i＝g( ΔP UL_i)，所述 ΔP UL_i为所述差分预编码矩阵，g( ΔP UL_i)表示对 ΔP UL_i归一化处理。
  20. 根据权利要求15至19中任一项所述的通信处理装置，其特征在于，所述收发模块还用于：
    接收来自所述网络设备的无线资源控制RRC信令，所述RRC信令用于指示所述通信处理装置采用差分码本模式。
  21. 根据权利要求15至19中任一项所述的通信处理装置，其特征在于，所述收发模块还用于：
    接收来自所述网络设备的第二指示信息，所述第二指示信息用于使能所述通信处理装置开启差分码本功能。
  22. 一种通信处理装置，其特征在于，所述通信处理装置包括：
    收发模块，用于向终端设备发送第一指示信息，所述第一指示信息用于指示第一带宽的第一上行预编码矩阵；
    处理模块，用于根据所述第一上行预编码矩阵和第二上行预编码矩阵确定所述终端设备在第二带宽上的期望差分预编码矩阵，所述第二上行预编码矩阵是所述终端设备在所述第二带宽上的期望上行预编码矩阵，所述第二带宽为所述第一带宽的子集；根据所述期望差分预编码矩阵确定下行波束权值；根据所述下行波束权值生成波束赋形信道状态信息参考信号BF CSI-RS；
    所述收发模块，还用于在所述第二带宽上向所述终端设备发送所述BF CSI-RS，所述BF CSI-RS用于所述终端设备估计所述期望差分预编码矩阵。
  23. 根据权利要求22所述的通信处理装置，其特征在于，所述收发模块具体用于：
    向所述终端设备发送下行控制信息DCI，所述DCI用于指示所述第一上行预编码矩阵。
  24. 根据权利要求22或23所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：根据以下方式确定所述差分预编码矩阵；
    ΔP UL_i＝g(P WB-P UL_i)，所述 ΔP UL_i为所述期望差分预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述P UL_i为所述第二上行预编码矩阵，g(P WB-P UL_i)表示对P WB-P UL_i进行归一化处理。
  25. 根据权利要求22或23所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：根据以下方式确定所述差分预编码矩阵；
    ΔP UL_i＝γ*P UL_i-P WB，所述 ΔP UL_i为所述期望差分预编码矩阵，所述P WB为所述第一上行预编码矩阵，所述P UL_i为第二上行预编码矩阵，所述γ为实数，通过所述γ的调整使得所述 ΔP UL_i是归一化的。
  26. 根据权利要求22至25中任一项所述的通信处理装置，其特征在于，所述第二带宽为第i个频域单元，所述i为大于或等于1且小于或等于N的整数，所述N为所述第一带宽包括的频域单元数；所述处理模块具体用于：根据以下方式确定所述下行波束权值；
    H DL_i*P DL_i＝ ΔP UL_i，所述H DL_i表示下行信道，所述下行信道为所述终端设备在所述第i个频域单元上所述通信处理装置到所述终端设备之间的下行信道，所述P DL_i为所述下行波束权值，所述 ΔP UL_i为所述期望差分预编码矩阵。
  27. 根据权利要求22至26中任一项所述的通信处理装置，其特征在于，所述收发模块还用于：
    向所述终端设备发送无线资源控制RRC信令，所述RRC信令用于指示所述终端设备采用差分码本模式。
  28. 根据权利要求22至26中任一项所述的通信处理装置，其特征在于，所述收发模块还用于：
    向所述终端设备发送第二指示信息，所述第二指示信息用于使能所述终端设备开启差分码本功能。
  29. 一种通信处理装置，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程序或指令，当所述程序或指令被所述处理器执行时，使得所述通信处理装置执行如权利要求1至7中任一项所述的方法，或者，使得所述通信处理装置执行如权利要求8至14中任一项所述的方法。
  30. 一种计算机可读介质，其特征在于，用于储存计算机程序或指令，所述计算机程序或指令被执行时，使得计算机执行如权利要求1至7中任一项所述的方法，或者，使得所述计算机执行如权利要求8至14中任一项所述的方法。
  31. 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，使得所述计算机执行如权利要求1至7中任一项所述的方法，或者，使得所述计算机执行如权利要求8至14中任一项所述的方法。
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