WO2024077448A1 - 通信方法、装置、芯片系统、存储介质及计算机程序产品 - Google Patents

通信方法、装置、芯片系统、存储介质及计算机程序产品 Download PDF

Info

Publication number
WO2024077448A1
WO2024077448A1 PCT/CN2022/124415 CN2022124415W WO2024077448A1 WO 2024077448 A1 WO2024077448 A1 WO 2024077448A1 CN 2022124415 W CN2022124415 W CN 2022124415W WO 2024077448 A1 WO2024077448 A1 WO 2024077448A1
Authority
WO
WIPO (PCT)
Prior art keywords
data stream
information
precoding matrix
data
precoding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/124415
Other languages
English (en)
French (fr)
Inventor
张长
汪凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP22961643.8A priority Critical patent/EP4593300A4/en
Priority to CN202280100610.1A priority patent/CN120035942A/zh
Priority to PCT/CN2022/124415 priority patent/WO2024077448A1/zh
Publication of WO2024077448A1 publication Critical patent/WO2024077448A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • 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
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H04B7/0481—Special codebook structures directed to feedback optimisation using subset selection of codebooks
    • 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
    • H04B7/0619—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 using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information

Definitions

  • the present application relates to the field of communications, and in particular to a communication method, device, chip system, storage medium and computer program product.
  • the transmitter can transmit the signal through the precoding matrix to improve the performance of the entire system.
  • the transmitter and the receiver generally store a set of precoding matrices V. By feeding back the precoding matrix indicator (PMI) from the receiving end, the transmitter can obtain the precoding matrix required for the transmitted signal.
  • PMI precoding matrix indicator
  • the precoding used in the Multi-Input Multi-Output (MIMO) system is generally linear precoding, the main idea of which is to map different streams into (almost) orthogonal subspaces to each other, thereby achieving decoupling of data between different streams.
  • MIMO Multi-Input Multi-Output
  • this communication method will bring some problems, such as low system capacity. Based on this, a communication solution is urgently needed to improve system capacity.
  • the present application provides a communication method, device, chip system, storage medium and computer program product for improving system capacity.
  • an embodiment of the present application provides a communication method, which can be performed by a first device.
  • the first device involved in the present application can be a terminal device or a network device, or a module, unit or chip (system) inside the terminal device or the network device.
  • a first device sends first information to a second device, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode a first data stream.
  • the first device sends second information to the second device, the second information includes information indicating a second precoding matrix, and the second precoding matrix is a candidate precoding matrix for the second device to precode a second data stream, and time domain resources of the first data stream and the second data stream have an intersection.
  • the first device can feed back two precoding matrices based on the reference signal of the second device, and the two precoding matrices are used to precode the first data stream and the second data stream, respectively, it is possible to enable a scheme for precoding the first data stream and the second data stream based on the two precoding matrices. Since the present application enables a scheme for precoding the first data stream and the second data stream based on the two precoding matrices, respectively, the first device and the second device can communicate based on the first data stream and the second data stream, thereby improving the system capacity.
  • the first information further includes a modulation and coding scheme (MCS) corresponding to the first precoding matrix.
  • MCS modulation and coding scheme
  • the second device can refer to the MCS in the first information when determining precoding information for the first data stream, so that the second device can determine more reasonable precoding information.
  • MCS includes information such as quadrature amplitude modulation (QAM) modulation order and/or code rate.
  • the first information further includes rank indication information corresponding to the first precoding matrix.
  • the second device can refer to the rank indication information in the first information when determining precoding information for the first data stream, so that the second device can determine more reasonable precoding information.
  • the second information further includes an MCS corresponding to the second precoding matrix.
  • the second device can refer to the MCS in the second information when determining precoding information for the second data stream, so that the second device can determine more reasonable precoding information.
  • the second information further includes rank indication information corresponding to the second precoding matrix.
  • the second device can refer to the rank indication information in the second information when determining precoding information for the second data stream, so that the second device can determine more reasonable precoding information.
  • the bandwidth corresponding to the first precoding matrix and the second precoding matrix may be set independently.
  • the bandwidth corresponding to the first precoding matrix may be different from the bandwidth corresponding to the second precoding matrix.
  • the bandwidth corresponding to the first precoding matrix is set to mode 1 in the codebook mode defined in new radio (NR)
  • the bandwidth corresponding to the second precoding matrix is set to mode 2 in the codebook mode defined in NR, wherein the beam in mode 1 is a broadband mode, and the beam in mode 2 is a broadband plus subband mode.
  • the codebook levels corresponding to the first precoding matrix and the second precoding matrix may be set independently.
  • the codebook level corresponding to the first precoding matrix may be different from the codebook level corresponding to the second precoding matrix.
  • the second precoding matrix may correspond to a secondary codebook
  • the first precoding matrix may correspond to a primary codebook.
  • the number of beams corresponding to the public data stream is less, and the number of beams corresponding to the private data stream is more, which can save power consumption on the one hand, and enhance the directionality of the private data stream on the other hand, so that the energy of the beam corresponding to the private data stream is more concentrated, thereby improving communication performance.
  • the precoding resource block groups corresponding to the first precoding matrix and the second precoding matrix can be independently set.
  • the precoding resource block group corresponding to the first precoding matrix can be different from the precoding resource block group corresponding to the second precoding matrix.
  • the precoding resource block group corresponding to the first precoding matrix can be larger than the precoding resource block group corresponding to the second precoding matrix.
  • the number of physical resource blocks applied to the precoding matrix corresponding to the private data stream is relatively small. Since there are differences in the channels corresponding to different physical resource blocks, the precoding matrix used by the private data stream can be made to better match the channel conditions corresponding to the private data stream, thereby improving communication performance.
  • the first information includes information indicating a plurality of first precoding matrices, and at least two of the plurality of first precoding matrices are different. Since the first data stream is a common data stream of the first device, and the common data stream has the ability to carry data of the first device and other devices (such as a third device), other devices (such as a third device) can also feed back the precoding matrix corresponding to the common data stream to the second device.
  • the second device determines that the number of selectable items of the precoding matrix of the first data stream increases, so that the second device can select a better precoding matrix of the first data stream for the first device and other devices (such as a third device).
  • the second information includes information indicating a plurality of second precoding matrices, and at least two of the plurality of second precoding matrices are different. Since the first device feeds back a plurality of second precoding matrices to the second device, the second device determines that more options for the precoding matrix of the second data stream are available, thereby enabling the second device to select a better precoding matrix for the second data stream.
  • the first precoding matrix is a precoding matrix in the first precoding matrix set
  • the second precoding matrix is a precoding matrix in the second precoding matrix set.
  • the first precoding matrix set is a subset of the second precoding matrix set. Since the first precoding matrix set is a subset of the second precoding matrix set, the number of sets of precoding matrices to be defined can be reduced, thereby reducing signaling overhead and reducing storage space occupied by the precoding matrices.
  • the first precoding matrix is a precoding matrix in a first precoding matrix set
  • the second precoding matrix is a precoding matrix in a second precoding matrix set.
  • the number of precoding matrices included in the first precoding matrix set is different from or the same as the number of precoding matrices included in the second precoding matrix set. In this way, the flexibility of the solution can be improved.
  • the first device receives first trigger information, and the first trigger information triggers the first device to feedback information of a candidate precoding matrix of the first data stream.
  • the first device sends the first information to the second device based on the first trigger information.
  • the second device can determine that the first device needs to feedback the candidate precoding matrix of the common data stream of the first device according to its actual needs, it sends the first trigger information to the first device to trigger the first device to feedback the candidate precoding matrix of the common data stream of the first device.
  • this scheme can save signaling consumption.
  • the first device receives second trigger information, and the second trigger information triggers the first device to feedback information about a candidate precoding matrix of a second data stream.
  • the first device sends the second information to the second device based on the second trigger information.
  • the second device can determine that the first device needs to feedback the candidate precoding matrix of the private data stream of the first device based on its actual needs, it sends the second trigger information to the first device to trigger the first device to feedback the candidate precoding matrix of the private data stream of the first device.
  • this solution can save signaling consumption.
  • the first device periodically sends information indicating the candidate precoding matrix of the first data stream with a first duration as a period.
  • one of the information indicating the candidate precoding matrix of the first data stream fed back by the first device may be the above-mentioned first information, or it may be understood that the above-mentioned first information is the information indicating the candidate precoding matrix of the first data stream sent by the first device in one period.
  • the first device may periodically feed back information on the candidate precoding matrix of the common data stream of the first device, so that the second device may select based on the most recently received candidate precoding matrix when it is necessary to determine the precoding matrix for the common data stream of the first device.
  • the frequency at which the first device feeds back information on the candidate precoding matrix of the common data stream of the first device may be low. In this case, the overhead caused by the feedback may be reduced.
  • the first device periodically sends information indicating the candidate precoding matrix of the second data stream with the second time length as a period.
  • one of the information indicating the candidate precoding matrix of the second data stream fed back by the first device may be the above-mentioned second information, or it may be understood that the above-mentioned second information is the information indicating the candidate precoding matrix of the second data stream sent by the first device in one period.
  • the first device may periodically feed back information on the candidate precoding matrix of the private data stream of the first device, so that the second device may make a selection based on the most recently received candidate precoding matrix when it is necessary to determine the precoding matrix for the private data stream of the first device.
  • an embodiment of the present application provides a communication method, which can be performed by a second device.
  • the second device involved in the present application can be a terminal device or a network device, or a module, unit or chip (system) inside the terminal device or the network device.
  • a second device receives first information from a first device, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode a first data stream.
  • a second device receives second information from the first device, the second information includes information indicating a second precoding matrix, and the second precoding matrix is a candidate precoding matrix for the second device to precode a second data stream, and time domain resources of the first data stream and the second data stream have an intersection.
  • the first device can feed back two precoding matrices based on the reference signal of the second device, and the two precoding matrices are used to precode the first data stream and the second data stream, respectively, it is possible to enable a scheme for precoding the first data stream and the second data stream based on the two precoding matrices. Since the present application enables a scheme for precoding the first data stream and the second data stream based on the two precoding matrices, respectively, the first device and the second device can communicate based on the first data stream and the second data stream, thereby improving the system capacity.
  • the first information further includes a modulation and coding strategy corresponding to the first precoding matrix and/or rank indication information corresponding to the first precoding matrix.
  • the second information further includes a modulation and coding strategy corresponding to the second precoding matrix and/or rank indication information corresponding to the second precoding matrix.
  • a bandwidth corresponding to the first precoding matrix is different from a bandwidth corresponding to the second precoding matrix.
  • a codebook level corresponding to the first precoding matrix is different from a codebook level corresponding to the second precoding matrix.
  • the number of precoding resource block groups corresponding to the first precoding matrix and the number of precoding resource block groups corresponding to the second precoding matrix are different.
  • the first information includes information indicating a plurality of first precoding matrices, and at least two of the plurality of first precoding matrices are different;
  • the second information includes information indicating a plurality of second precoding matrices, and at least two second precoding matrices among the plurality of second precoding matrices are different.
  • the first precoding matrix is a precoding matrix in a first precoding matrix set
  • the second precoding matrix is a precoding matrix in a second precoding matrix set.
  • the first precoding matrix set is a subset of the second precoding matrix set.
  • the first precoding matrix is a precoding matrix in a first precoding matrix set
  • the second precoding matrix is a precoding matrix in a second precoding matrix set.
  • the number of precoding matrices included in the first precoding matrix set is different from the number of precoding matrices included in the second precoding matrix set.
  • the second device before the second device receives the first information from the first device, it also includes: the second device sends a first trigger message to the first device, and the first trigger message triggers the first device to feedback information about the candidate precoding matrix of the first data stream.
  • the second device can send the first trigger message to the first device to trigger the first device to feedback the candidate precoding matrix of the common data stream of the first device based on its actual needs, when it is determined that the first device needs to feedback the candidate precoding matrix of the common data stream of the first device.
  • this solution can save signaling consumption.
  • the process before the second device receives the second information from the first device, the process further includes: the second device sends second trigger information to the first device, and the second trigger information triggers the first device to feed back information about a candidate precoding matrix for the second data stream.
  • the second device when the second device determines that the first device needs to feed back the candidate precoding matrix of the private data stream of the first device according to its actual needs, the second device can send the second trigger information to the first device to trigger the first device to feed back the candidate precoding matrix of the private data stream of the first device. In this way, compared with the solution in which the first device periodically feeds back the candidate precoding matrix of the private data stream of the first device, this solution can save signaling consumption.
  • the second device periodically receives information indicating a candidate precoding matrix of the first data stream with a first duration as a period.
  • one of the information indicating a candidate precoding matrix of the first data stream received by the second device may be the above-mentioned first information, or it may be understood that the above-mentioned first information is information indicating a candidate precoding matrix of the first data stream received by the second device in one period.
  • the first device may periodically feed back information on the candidate precoding matrix of the common data stream of the first device, so that the second device may select based on the most recently received candidate precoding matrix when it is necessary to determine a precoding matrix for the common data stream of the first device.
  • the frequency at which the first device feeds back information on the candidate precoding matrix of the common data stream of the first device may be low. In this case, the overhead caused by the feedback may be reduced.
  • the second device periodically receives information indicating a candidate precoding matrix for the second data stream with a second duration as a period.
  • one of the information indicating a candidate precoding matrix for the second data stream received by the second device may be the above-mentioned second information, or it may be understood that the above-mentioned second information is information indicating a candidate precoding matrix for the second data stream received by the second device in one period.
  • the first device may periodically feed back information on the candidate precoding matrix for the private data stream of the first device, so that the second device may make a selection based on the most recently received candidate precoding matrix when it is necessary to determine a precoding matrix for the private data stream of the first device.
  • an embodiment of the present application provides a communication method, which can be performed by a first device.
  • the first device involved in the present application can be a terminal device or a network device, or a module, unit or chip (system) inside the terminal device or the network device.
  • a first device receives third information from a second device, and the first device receives a first data stream and a second data stream from the second device based on the third information, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the third information includes at least one of the following: information indicating the time-frequency resources occupied by the first data stream; information indicating the modulation and coding method of the first data stream; position indication information indicating the position of the data of the first device in the first data stream; or a demodulation reference signal (DMRS) port corresponding to the first data stream.
  • DMRS demodulation reference signal
  • the first data stream has the ability to carry data of multiple devices (such as the first device and other devices), and the second data stream can be the data of the first device. Since the time domain resources of the first data stream and the second data stream overlap, the data of the first device can be sent through two data streams.
  • the communication scheme of sending the data of one device through multiple data streams can improve the system capacity. It can be seen that the scheme provided in the embodiment of the present application can enable a scheme for communicating with the first device based on the first data stream and the second data stream, respectively, and then improve the system capacity.
  • the first device can obtain the first data stream from the received signal more quickly, and can also obtain the relevant information of the first device from the first data stream more quickly, thereby improving the communication efficiency of the first device and the second device based on the first data stream and the second data stream.
  • the first data stream is a public data stream.
  • the second device can indicate the relevant information of the public data stream to the first device through the third information, so that the first device can obtain the public data stream more efficiently and conveniently based on the third information.
  • the second device can also indicate the specific location of the data of the first device in the public data stream to the first device through the third information, so that the first device can obtain the information of the first device carried in the public data stream more efficiently and conveniently based on the third information.
  • the first data stream includes data of the first device
  • the location indication information includes: group identification information of a logical bit group corresponding to the data of the first device.
  • the logical bit group includes one or more continuous logical bits, and the logical bit group has a mapping relationship with one physical bit, a plurality of continuous physical bits, or a plurality of discontinuous physical bits. In this way, the number of bits occupied by the location indication information of the second device can be reduced, thereby reducing overhead.
  • a logical bit has a mapping relationship with one or more physical bits, thereby improving the flexibility of the solution.
  • the third information further includes: identification information of a layer to which the codeword corresponding to the data of the first data stream is mapped.
  • the first device can parse the first data stream according to the identification information of the layer corresponding to the first data stream, thereby reducing the difficulty of the first device in parsing the first data stream.
  • the data of the first data stream corresponds to one or more codewords.
  • one of the one or more codewords corresponding to the data of the first data stream is mapped to one or more layers. This can improve the flexibility of the solution.
  • the data of the second data stream corresponds to one or more codewords.
  • one of the one or more codewords of the second data stream is mapped to one or more layers. This can improve the flexibility of the solution.
  • the codeword corresponding to the data of the first data stream is different from the codeword corresponding to the data of the second data stream; this can reduce the difficulty of the first device to parse the data.
  • the layer to which the codeword corresponding to the data of the first data stream is mapped is different from the layer to which the codeword corresponding to the data of the second data stream is mapped. This can reduce the difficulty of the first device to parse the data.
  • the first device receives fourth information from the second device.
  • the fourth information includes at least one of the following: information indicating the time-frequency resources occupied by the second data stream; information indicating the modulation and coding method of the second data stream; information indicating the DMRS port corresponding to the second data stream; or identification information indicating the layer of the codeword mapping corresponding to the data of the first device in the second data stream.
  • the second data stream is a private data stream of the first device.
  • the first device receives information from the second device indicating that the first data stream includes data of the first device.
  • the first device obtains the data of the first device from the first data stream based on the indication that the first data stream includes data of the first device. In this way, if the first device determines that the first data stream does not include the data of the first device, there is no need to try to obtain the data of the first device from the first data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • information indicating that the first data stream includes data of the first device is carried in downlink control information (DCI). This can reduce signaling overhead and be more compatible with existing technologies.
  • DCI downlink control information
  • the first device receives the first DCI, and when the first device determines that the first DCI is scrambled using a first radio network temporary identity (RNTI), the first device determines that the first data stream includes data of the first device.
  • RNTI radio network temporary identity
  • This implementation can implicitly indicate whether the first data stream includes data of the first device, thereby saving the amount of information sent by the second device, thereby improving data transmission efficiency.
  • the first device receives the first DCI, and when determining that the first DCI is scrambled using the second RNTI, the first device determines that the first data stream does not include the data of the first device.
  • This implementation can implicitly indicate whether the first data stream includes data of the first device, thereby saving the amount of information sent by the second device and further improving data transmission efficiency.
  • the first device receives a target data stream from the second device based on the third information, and the target data stream includes the first data stream.
  • the first device receives information from the second device indicating that the target data stream includes the second data stream, and the second data stream is the data stream of the first device.
  • the first device obtains data in the second data stream from the target data stream based on the information indicating that the target data stream includes the second data stream.
  • the first device determines that the target data stream does not include the second data stream, and then does not need to try to obtain the private data stream of the first device from the target data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • information indicating that the target data stream includes the second data stream is carried in the DCI, which can reduce signaling overhead and is more compatible with existing technologies.
  • the first device receives a target data stream from the second device based on the third information, and the target data stream includes the first data stream.
  • the first device receives the second DCI, and when the first device determines that the second DCI is encrypted using the third RNTI, it determines that the target data stream includes information about the second data stream. In this way, it is possible to determine whether the target data stream includes the second data stream in an implicit manner. This implementation can save the amount of information sent by the second device, thereby improving data transmission efficiency.
  • the first device receives a target data stream from the second device based on the third information, and the target data stream includes the first data stream.
  • the first device determines that the second DCI is scrambled using the fourth RNTI, it determines that the target data stream does not include information about the second data stream.
  • This implementation can save the amount of information sent by the second device, thereby improving data transmission efficiency.
  • the third information is carried in the designated DCI of the first device and/or the group DCI.
  • the third information is carried in the designated DCI of the first device and/or the group DCI.
  • an embodiment of the present application provides a communication method, which can be performed by a second device.
  • the second device involved in the present application can be a terminal device or a network device, or a module, unit or chip (system) inside the terminal device or the network device.
  • the second device sends third information to the first device, and the second device sends a first data stream and a second data stream to the first device, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the third information includes at least one of the following: information indicating the time-frequency resources occupied by the first data stream; information indicating the modulation and coding mode of the first data stream; location indication information indicating the location of the data of the first device in the first data stream; or a DMRS port corresponding to the first data stream.
  • the first data stream has the ability to carry data of multiple devices (such as the first device and other devices), and the second data stream can be the data of the first device. Since the time domain resources of the first data stream and the second data stream overlap, the data of the first device can be sent through two data streams.
  • the communication scheme of sending the data of one device through multiple data streams can improve the system capacity. It can be seen that the scheme provided in the embodiment of the present application can enable a scheme for communicating with the first device based on the first data stream and the second data stream, respectively, and then improve the system capacity.
  • the first device can obtain the first data stream from the received signal more quickly, and can also obtain the relevant information of the first device from the first data stream more quickly, thereby improving the communication efficiency of the first device and the second device based on the first data stream and the second data stream.
  • the first data stream is a public data stream.
  • the first data stream is a public data stream.
  • the first data stream includes data of the first device
  • the location indication information includes: group identification information of a logical bit group corresponding to the data of the first device.
  • the logical bit group includes one or more continuous logical bits, and the logical bit group has a mapping relationship with a physical bit, a plurality of continuous physical bits, or a plurality of discontinuous physical bits.
  • a logical bit has a mapping relationship with one or more physical bits.
  • the third information further includes identification information indicating a layer to which the codeword corresponding to the data of the first data stream is mapped.
  • the data of the first data stream corresponds to one or more codewords; and/or, one of the one or more codewords corresponding to the data of the first data stream is mapped to one or more layers.
  • the data of the first data stream corresponds to one or more codewords; and/or, one of the one or more codewords corresponding to the data of the first data stream is mapped to one or more layers.
  • the data of the second data stream corresponds to one or more codewords, and/or one codeword of the one or more codewords of the second data stream is mapped to one or more layers.
  • the data of the second data stream corresponds to one or more codewords, and/or one codeword of the one or more codewords of the second data stream is mapped to one or more layers.
  • the codeword corresponding to the data of the first data stream is different from the codeword corresponding to the data of the second data stream.
  • the layer to which the codeword corresponding to the data of the first data stream is mapped is different from the layer to which the codeword corresponding to the data of the second data stream is mapped.
  • the second device sends fourth information to the first device.
  • the fourth information includes at least one of the following: information indicating the time-frequency resources occupied by the second data stream; information indicating the modulation and coding mode of the second data stream; information indicating the DMRS port corresponding to the second data stream; or identification information indicating the layer of the codeword mapping corresponding to the data of the first device in the second data stream.
  • the first device may determine relevant information of the second data stream according to the fourth information, and then obtain information in the second data stream from the received data.
  • the second device sends information indicating that the first data stream includes data of the first device to the first device. In this way, if the first device determines that the first data stream does not include data of the first device, it does not need to try to obtain data of the first device from the first data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • information indicating that the first data stream includes data of the first device is carried in the DCI.
  • information indicating that the first data stream includes data of the first device is carried in the DCI.
  • the second device sends a first DCI to the first device, the first DCI is scrambled with a first RNTI, and the first RNTI indicates that the first data stream includes data of the first device.
  • This implementation can implicitly indicate whether the first data stream includes data of the first device, thereby saving the amount of information sent by the second device and further improving data transmission efficiency.
  • the second device sends a first DCI to the first device, the first DCI is scrambled with a second RNTI, and the second RNTI indicates that the first data stream does not include data of the first device.
  • This implementation can implicitly indicate whether the first data stream includes data of the first device, thereby saving the amount of information sent by the second device and further improving data transmission efficiency.
  • the second device sends a target data stream to the first device, the target data stream includes the first data stream.
  • the second device sends information indicating that the target data stream includes the second data stream to the first device, the second data stream is the data stream of the first device.
  • the first device determines that the target data stream does not include the second data stream, and then does not need to try to obtain the private data stream of the first device from the target data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • information indicating that the target data stream includes the second data stream is carried in the DCI.
  • the contents of the third aspect and possible implementation manners of the third aspect which will not be described in detail here.
  • the second device sends a target data stream to the first device, the target data stream includes the first data stream.
  • the second device sends a second DCI to the first device, the second DCI is scrambled with a third RNTI, and the third RNTI indicates that the target data stream includes information of the second data stream.
  • This implementation can save the amount of information sent by the second device, thereby improving data transmission efficiency.
  • the second device sends a target data stream to the first device, the target data stream includes the first data stream.
  • the second device sends a second DCI to the first device, the second DCI is scrambled using a fourth RNTI, and the fourth RNTI indicates that the target data stream does not include information about the second data stream.
  • This implementation can save the amount of information sent by the second device, thereby improving data transmission efficiency.
  • a communication device which may be the aforementioned first device or second device.
  • the communication device may include a communication unit and a processing unit to perform any of the above-mentioned first to fourth aspects, or to perform any possible implementation of the first to fourth aspects.
  • the communication unit is used to perform functions related to sending and receiving.
  • the communication unit includes a receiving unit and a sending unit.
  • the communication device is a chip (system)
  • the processing unit may be one or more processors or processor cores
  • the communication unit may be an input and output circuit or port of a communication chip.
  • the communication device is a terminal device or a network device
  • the communication unit may be a transmitter and a receiver
  • the communication unit is a transmitter and a receiver
  • the communication device also includes various modules that can be used to execute any aspect of the first to fourth aspects above, or execute any possible implementation of the first to fourth aspects.
  • a communication device which may be the aforementioned first device or second device.
  • the communication device may include a processor and a memory to execute any one of the above-mentioned first to fourth aspects, or to execute any possible implementation of the first to fourth aspects.
  • the memory is used to store a computer program or instruction, and the processor is used to call and run the computer program or instruction from the memory.
  • the communication device executes any one of the above-mentioned first to fourth aspects, or to execute any possible implementation of the first to fourth aspects.
  • the communication device also includes a transceiver.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the transceiver may include a transmitter (transmitter) and a receiver (receiver).
  • a communication device which may be the aforementioned first device or second device.
  • the communication device may include a processor to perform any aspect of the aforementioned first to fourth aspects, or to perform any possible implementation of the first to fourth aspects.
  • the processor is coupled to a memory.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system, etc.
  • the processor may also be embodied as a processing circuit or a logic circuit.
  • a system comprising the one or more first devices mentioned above.
  • the system may also comprise one or more second devices.
  • a computer program product which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute any one of the first to fourth aspects above, or any possible implementation of the first to fourth aspects.
  • a computer program also referred to as code, or instruction
  • a computer-readable storage medium which stores a computer program (also referred to as code, or instructions).
  • a computer program also referred to as code, or instructions.
  • the computer program When the computer program is run on a computer, the computer executes any one of the first to fourth aspects above, or executes any possible implementation of the first to fourth aspects.
  • a chip system which may include a processor.
  • the processor is coupled to a memory and may be used to perform any of the first to fourth aspects described above, or to perform any possible implementation of the first to fourth aspects.
  • the chip system also includes the memory.
  • the memory is used to store a computer program (also referred to as code, or instruction).
  • the processor is used to call and run a computer program from the memory, so that a device equipped with the chip system performs any of the first to fourth aspects described above, or performs any possible implementation of the first to fourth aspects.
  • a processing device comprising: an interface circuit and a processing circuit.
  • the interface circuit may include an input circuit and an output circuit.
  • the processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that any aspect of the first to fourth aspects above, or any possible implementation of the first to fourth aspects is implemented.
  • the above-mentioned processing device can be a chip
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits.
  • the input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver
  • the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter
  • the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • This application does not limit the specific implementation methods of the processor and various circuits.
  • the interface circuit may be a radio frequency processing chip in the terminal device or the network device, and the processing circuit may be a baseband processing chip in the terminal device or the network device.
  • the processing device may be a part of a terminal device or a network device, such as an integrated circuit product such as a system chip (system) or a communication chip (system).
  • the interface circuit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip (system).
  • the processing circuit may be a logic circuit on the chip (system).
  • FIG1 is a possible schematic diagram of a system architecture applicable to an embodiment of the present application.
  • FIG2 is a possible schematic diagram of a data transmission principle based on rate splitting (RS) applicable to an embodiment of the present application;
  • FIG3 is a possible flow chart of a communication method provided in an embodiment of the present application.
  • FIG4 is a possible flow chart of a communication method provided in an embodiment of the present application.
  • FIG5 is a schematic diagram of a possible mapping relationship between logical bits and physical bits provided in an embodiment of the present application
  • FIG6 is an example of a codeword-to-layer mapping provided in an embodiment of the present application.
  • FIG7 is another example of mapping codewords to layers provided in an embodiment of the present application.
  • FIG8 is a possible structural diagram of a communication device provided in an embodiment of the present application.
  • FIG9 is a possible structural diagram of another communication device provided in an embodiment of the present application.
  • FIG. 10 is a possible schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems.
  • 5G fifth generation mobile network
  • NR long term evolution
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • 5G for example, the sixth generation mobile network (6G) mobile communication system
  • 6G sixth generation mobile network
  • V2X vehicle to everything
  • FIG1 exemplarily shows a possible schematic diagram of a system architecture applicable to an embodiment of the present application.
  • the system includes a network device and a terminal device, and the network device can perform uplink transmission and downlink transmission with multiple terminal devices respectively.
  • the transmission direction of uplink transmission refers to the transmission direction from the terminal device to the network device, and the downlink transmission refers to the transmission direction from the network device to the terminal device.
  • the solution provided in the present application is applicable to communication between multiple devices, such as communication between a network device and one or more terminal devices, or communication between a terminal device and one or more terminal devices, or communication between a network device and one or more network devices.
  • the first device involved in the present application may be a terminal device or a network device, or a module, unit or chip (system) inside a terminal device or a network device.
  • the second device involved in the present application may be a terminal device or a network device, or a module, unit or chip (system) inside a terminal device or a network device.
  • the first device and the second device may be a terminal device and a network device, respectively, or a chip (system) inside a terminal device and a chip (system) inside a network device, respectively, or both may be a unit module or chip (system) inside a terminal device or a terminal device, or both may be a unit module or chip (system) inside a network device or a network device.
  • Terminal equipment may also be referred to as terminal or terminal device.
  • Terminal equipment includes equipment that provides data connectivity to users, specifically, equipment that provides data connectivity to users, or equipment that provides data connectivity to users. For example, it may include a handheld device with wireless connection function, or a processing device connected to a wireless modem.
  • the terminal equipment may communicate with the core network via a radio access network (RAN), exchange data with the RAN, or interact with the RAN.
  • the terminal equipment may include UE, wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, and Internet of Things (IoT) terminal equipment.
  • D2D device-to-device
  • V2X machine-to-machine/machine-type communications
  • IoT Internet of Things
  • the terminal equipment may also be monitoring equipment, machines, and sensors in industrial automation scenarios, or mobile phones, wearable devices, smart home appliances, and vehicle-mounted terminals in home and life scenarios.
  • terminal devices may also support direct communication (PC5) interface communication, that is, support transmission through a side link.
  • PC5 direct communication
  • the terminal device may be a wearable device.
  • Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for the application of wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, etc., as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.
  • on-board devices are also called onboard units (OBU).
  • OBU onboard units
  • the terminal device may also include a relay.
  • a relay any device that can communicate data with the base station.
  • the network equipment includes access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment in the access network that communicates with a terminal device through one or more cells at an air interface, or, for example, the network equipment is a road side unit (RSU).
  • AN access network
  • the RSU may be a fixed infrastructure entity that supports V2X applications and may exchange messages with other entities that support V2X applications.
  • the network equipment may also include a base station in a code division multiple access (CDMA) system, a base station in a long term evolution (LTE) system, a next generation node B (gNB) in a fifth generation mobile communication technology (5G) new radio (NR) system (also referred to as an NR system), or may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system, etc., which are not limited in the embodiments of the present application.
  • CDMA code division multiple access
  • LTE long term evolution
  • gNB next generation node B
  • NR fifth generation mobile communication technology
  • CU centralized unit
  • DU distributed unit
  • Cloud RAN cloud radio access network
  • the network devices refer to access network devices.
  • the data stream involved in the embodiments of the present application is a data sequence of a group of ordered bytes with a starting point and an end point, that is, an object that can be used to transmit data.
  • the types of data streams in the present application may include business data, signal streams, etc., and the present application does not specifically limit the types of data streams.
  • data streams can be divided into uplink data streams and downlink data streams according to their directions, wherein uplink data streams generally refer to data streams sent by terminal devices to RAN devices, and downlink data streams generally refer to data streams sent by RAN devices to terminal devices.
  • the number of streams (also called the number of data streams or the number of spatial streams) is the number of transmission layers of space-division multiplexing, that is, the number of diagonal elements (singular values) of the middle diagonal matrix after singular value decomposition (SVD) of the MIMO channel transfer matrix.
  • the professional term is called rank, which is the rank reported to the network by the terminal through CSI.
  • the NR protocol defines that a single user supports up to 8 streams in the downlink and up to 4 streams in the uplink.
  • the network device may multiplex multiple terminal devices on the same resource for downlink transmission.
  • a downlink transmission method applicable to the embodiment of the present application is, for example, a multi-user multi-stream superposition transmission method based on RS.
  • FIG2 exemplarily shows a possible schematic diagram of the RS-based data transmission principle, and the RS-based data transmission principle is introduced in conjunction with FIG2.
  • the network device (the transmitting end in FIG2 ) can divide the data of UE1 into two parts, W 1 1 and W 1 12 , and encode them into data stream s 1 and data stream s 12 respectively.
  • the network device divides the data of UE2 into two parts, W 2 2 and W 2 12 , and encodes them into data stream s 2 and data stream s 12 respectively.
  • Data stream s 1 corresponds to channel h1
  • data stream s 2 corresponds to channel h2
  • data stream s 12 corresponds to channel h3.
  • the network device transmits channel h1 corresponding to data stream s 1 , channel h2 corresponding to data stream s 2, and channel h3 corresponding to data stream s 12 through time-frequency resources 1, time-frequency resources 2, and time-frequency resources 3 , respectively.
  • the time domain resources of time-frequency resources 1 and time-frequency resources 3 have an intersection, and the time domain resources of time-frequency resources 2 and time-frequency resources 3 have an intersection.
  • this example takes the case where the time domain resources in time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 are the same, and the frequency domain resources are the same as an example.
  • Data stream s12 includes data of UE1 and data of UE2. Both UE1 and UE2 need to demodulate data stream s12 .
  • Data stream s1 only carries data of UE1, so data stream s1 only needs to be demodulated by UE1.
  • Data stream s2 only carries data of UE2, so data stream s2 only needs to be demodulated by
  • UE1 can first demodulate the signal received by UE1 in the time-frequency resource 3 according to the demodulation information corresponding to the data stream s12 , and obtain the data of UE1 in the data stream s12 (as shown in FIG2 ).
  • the signal received on the time-frequency resource 1 is subjected to serial interference cancellation (SIC), and then, according to the demodulation information corresponding to the data stream s1 , the signal after SIC is demodulated to obtain the data in the data stream s1 , which is recorded as Thus, the complete data of UE1 is obtained.
  • SIC serial interference cancellation
  • the steps of SIC include, for example: UE1 first The data of UE1 in data stream s12 is demodulated, and then the data of UE1 in data stream s12 is restored to a signal according to the channel h4 corresponding to data stream s12 , and the restored signal is subtracted from the signal received by the time-frequency resource 1, that is, the restored signal is used as interference to cancel the interference from the signal received by the time-frequency resource 1, and the signal after SIC is obtained.
  • the operation of UE2 can be performed with reference to the operation of UE1.
  • RS-based data transmission has many advantages. For example, network equipment can adjust the data ratio of private streams and public streams in rate segmentation according to different channel conditions to obtain performance closer to the channel capacity, improve system capacity, improve resource utilization, obtain sum rata gain in high signal-to-noise ratio range, and make the system more robust when the channel changes rapidly.
  • a public data stream refers to a data stream that has the ability to carry data of multiple users.
  • a public data stream can be referred to as a public stream.
  • a public data stream has the ability to carry data of multiple users, but in actual applications, a public data stream can carry data streams of multiple users or only carry data streams of one user.
  • the data stream s12 may be referred to as a common data stream, or a common data stream corresponding to UE1, or a common data stream corresponding to UE2, or a common data stream corresponding to UE1 and UE2.
  • a private data stream is a data stream that has the ability to carry data of a user.
  • a private data stream may be referred to as a private stream.
  • the data stream s1 may be referred to as the private data stream of UE1, and the data stream s2 may be referred to as the private data stream of UE2.
  • the public data stream corresponding to the first device sent by the second device to the first device refers to a public data stream capable of carrying the data of the first device.
  • the public data stream may carry the data of the first device or may not carry the data of the first device.
  • the private data stream corresponding to the first device and sent by the second device to the first device refers to a data stream that carries data of the first device.
  • the time domain resources of the public data stream corresponding to the first device and the private data stream corresponding to the first device have an intersection, for example, the intersection of the time domain resources of the public data stream corresponding to the first device and the time domain resources of the private data stream corresponding to the first device may include one or more time units.
  • the time unit is a time domain unit used for signal transmission, and may include time domain units such as a radio frame, a subframe, a slot, a mini-slot, or at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol. OFDM symbols may also be referred to as time domain symbols.
  • the time domain length of a radio frame is, for example, 10ms
  • a radio frame may include 10 radio subframes
  • the time domain length of a radio subframe is 1ms.
  • a radio subframe may include one or more time slots, and the specific number of time slots included in a subframe is related to the subcarrier space (SCS). For the case where the SCS is 15 kHz, the time domain length of a time slot is 1ms.
  • a time slot includes 14 symbols.
  • the frequency domain resources of the public data stream corresponding to the first device and the private data stream corresponding to the first device may have an intersection or may not have an intersection.
  • the intersection of the time domain resources of the public data stream corresponding to the first device and the time domain resources of the private data stream corresponding to the first device includes time slot m, which can also be understood as that in time slot m, there are data corresponding to the public data stream corresponding to the first device and data corresponding to the private data stream corresponding to the first device at the same time.
  • the public data stream corresponding to the first device occupies the kth to k+nth physical resource blocks; the private data stream corresponding to the first device occupies the pth to p+ath physical resource blocks.
  • part or all of the physical resource blocks from kth to k+nth and part or all of the physical resource blocks from pth to p+ath physical resource blocks are the same physical resource blocks.
  • any one of the resource blocks from kth to k+nth and each of the resource blocks from pth to p+ath physical resource blocks are different.
  • an embodiment of the present application provides a scheme, in which the first device can feed back the precoding matrices of the public stream and the private stream to the second device respectively, so that the second device determines the precoding matrix for the public stream and the private stream respectively (the precoding matrix corresponding to the public stream and the precoding matrix corresponding to the private stream may be the same or different), and then precodes the public stream and the private stream respectively according to the two determined precoding matrices.
  • the scheme provided by the embodiment of the present application can enable a scheme for precoding the public data stream and the private data stream respectively based on two precoding matrices, and then the first device and the second device can communicate based on the public data stream and the private data stream, and the communication scheme can improve the system capacity.
  • Figure 3 exemplarily shows a possible flow chart of a communication method provided in an embodiment of the present application.
  • the scheme shown in Figure 3 is introduced by taking the interaction between the first device and the second device as an example.
  • any one of the first device and the second device can be the terminal device or network device shown in the aforementioned FIG. 1, or a unit module or chip (system) inside the terminal device, or a unit module or chip (system) inside the network device.
  • the first device is a terminal device and the second device is a network device; for another example, the first device is a network device and the second device is a terminal device; for another example, both the first device and the second device are network devices; for another example, both the first device and the second device are terminal devices.
  • the first device being a terminal device and the second device being a network device.
  • the method includes:
  • Step 301 A first device sends first information to a second device.
  • the second device receives the first information from the first device.
  • the first information includes information indicating a first precoding matrix.
  • the information indicating the first precoding matrix may include a precoding matrix indicator (PMI) of the first precoding matrix.
  • the first precoding matrix is a candidate precoding matrix for the second device to precode the first data stream.
  • the second device may refer to the first precoding matrix when determining a precoding matrix for the first data stream, and the precoding matrix of the first data stream determined by the second device may be the first precoding matrix or may not be the first precoding matrix.
  • the first device may receive a reference signal (also referred to as a pilot signal) from the second device, and the first device may perform channel estimation based on the reference signal. Then, the first device may obtain channel state information between the first device and the second device based on the channel estimation result, and the channel state information may include information indicating a first precoding matrix.
  • a reference signal also referred to as a pilot signal
  • the first data stream may be a public data stream corresponding to the first device, or may be a private data stream of the first device.
  • the following content is introduced by taking the first data stream as the public data stream corresponding to the first device as an example.
  • the first data stream has the ability to carry data of the first device and other devices (such as a third device).
  • the first data stream also has the ability to carry data of the third device, and the first data stream can also be called a common data stream of the third device.
  • the third device can be the terminal device or network device in Figure 1 above, or a unit module or chip (system) inside the terminal device, or a unit module or chip (system) inside the network device.
  • the third device is introduced as a terminal device as an example.
  • the first information includes information indicating multiple first precoding matrices, and at least two of the multiple first precoding matrices are different.
  • the first device can feed back one or more candidate precoding matrices of the first data stream through the first information.
  • the candidate precoding matrices of the one or more first data streams fed back by the first device through the first information are collectively referred to as first precoding matrices.
  • a candidate precoding matrix of a first data stream fed back by the first device through the first information i.e., a first precoding matrix
  • the number of first precoding matrices fed back by the first device through the first information can be preset or configured by other devices (such as the second device).
  • the first data stream is a common data stream of the first device, and the common data stream has the ability to carry data of the first device and other devices (such as a third device), other devices (such as the third device) can also feedback the precoding matrix corresponding to the common data stream to the second device. Therefore, when the first device feeds back multiple first precoding matrices to the second device, the second device determines that the number of optional items of the precoding matrix of the first data stream increases, so that the second device can select a better precoding matrix of the first data stream for the first device and other devices (such as the third device).
  • a first precoding matrix set may be preset, the first precoding matrix set includes one or more precoding matrices, and the first precoding matrix in the embodiment of the present application is a precoding matrix in the first precoding matrix set.
  • the first device may feed back all precoding matrices in the first precoding matrix set to the second device, so that more options may be provided to the second device, so that the second device can select a better precoding matrix for the first data stream for the first device and other devices (such as a third device).
  • the second device may select a candidate precoding matrix of the same common data stream fed back by the first device and other devices (such as the third device) as the precoding matrix of the first data stream.
  • the first device may select a candidate precoding matrix fed back by any of the first device and other devices (such as the third device) as the precoding matrix of the first data stream.
  • the first device may determine a new candidate precoding matrix as the precoding matrix of the first data stream based on the candidate precoding matrix fed back by the first device and other devices (such as the third device). For example, the first device feeds back the candidate precoding matrix P1 of the common data stream, and the third device feeds back the candidate precoding matrix P2 of the common data stream.
  • P3 a*P1+b*P2
  • * represents the multiplication sign
  • a and b can represent two coefficients respectively, and a and b can be the same or different
  • the first information further includes a modulation and coding scheme (MCS) corresponding to the first precoding matrix.
  • MCS modulation and coding scheme
  • the second device can refer to the MCS in the first information when determining precoding information for the first data stream, so that the second device can determine more reasonable precoding information.
  • the MCS includes information such as the QAM modulation order and/or code rate.
  • the first information further includes rank indication information corresponding to the first precoding matrix.
  • the second device can refer to the rank indication information in the first information when determining precoding information for the first data stream, so that the second device can determine more reasonable precoding information.
  • Step 302 The first device sends second information to the second device.
  • the second device receives the second information from the first device.
  • the second information includes information indicating a second precoding matrix.
  • the second precoding matrix is a candidate precoding matrix for the second device to precode the second data stream.
  • the second device may refer to the second precoding matrix when determining the precoding matrix for the second data stream, and the precoding matrix of the second data stream determined by the second device may be the second precoding matrix or may not be the second precoding matrix.
  • the second information and the first information can be carried in the same message, that is, the first device can feed back the candidate precoding matrix of the first data stream and the candidate precoding matrix of the second data stream to the second device through the same message.
  • the second information and the first information can also be carried in two different messages respectively, for example, the first device can feed back the two information to the first device respectively through two messages. In this way, the flexibility of the solution can be improved.
  • the second data stream may be a public data stream corresponding to the first device, or may be a private data stream of the first device.
  • the following content is introduced by taking the second data stream as the private data stream of the first device as an example.
  • the time domain resources of the first data stream and the second data stream have an intersection, for example, at least one time domain symbol of the time domain resources of the first data stream and the time domain resources of the second data stream is the same (for example, at least one time slot is the same), which can also be understood as the time when the second device sends the first data stream and the second data stream partially overlaps.
  • the first data stream has the ability to carry the data of the first device, and the second data stream is the data stream of the first device.
  • the intersection of the time domain resources of the first data stream and the second data stream can also be understood as the second device can superimpose the first data stream and the second data stream in the time domain for transmission.
  • the frequency domain resources of the first data stream and the second data stream may have an intersection or may not have an intersection.
  • time domain resources of the first data stream and the second data stream are the same, that is, the time domain resources of the first data stream and the second data stream completely overlap.
  • the time domain resources of the first data stream and the second data stream are partially the same (that is, not completely the same), that is, the time domain resources of the first data stream and the second data stream partially overlap.
  • the time domain resources of the first data stream and the second data stream have an intersection, and the frequency domain resources of the first data stream and the second data stream are the same, that is, the frequency domain resources of the first data stream and the second data stream completely overlap.
  • the time domain resources of the first data stream and the second data stream have an intersection, and the frequency domain resources of the first data stream and the second data stream are partially the same (that is, not completely the same), that is, the frequency domain resources of the first data stream and the second data stream partially overlap.
  • the time domain resources of the first data stream and the second data stream have an intersection, and the frequency domain resources of the first data stream and the second data stream are completely different, that is, the frequency domain resources of the first data stream and the second data stream do not overlap.
  • the time domain situations and frequency domain situations indicated in these examples can be freely combined without any specific combination relationship.
  • the frequency domain resources of the first data stream and the second data stream can be the same, partially the same, or completely different.
  • the frequency domain resources of the first data stream and the second data stream can be the same, partially the same, or completely different.
  • the second information includes information indicating a plurality of second precoding matrices, and at least two of the plurality of second precoding matrices are different.
  • the first device may feed back one or more candidate precoding matrices of the second data stream through the second information.
  • the candidate precoding matrices of the one or more second data streams fed back by the first device through the second information are collectively referred to as second precoding matrices.
  • a candidate precoding matrix of a second data stream fed back by the first device through the second information i.e., a second precoding matrix
  • a second precoding matrix is used as an example for introduction.
  • the number of second precoding matrices fed back by the first device through the second information may be preset or configured by other devices (such as the second device). There is no necessary correlation between the number of second precoding matrices fed back by the first device through the second information and the number of first precoding matrices fed back by the first device through the first information, and the two numbers may be different or the same. In this way, the flexibility of the scheme can be improved.
  • the first precoding matrix fed back by the first device through the first information and the second precoding matrix fed back by the first device through the second information may be the same or different.
  • each first precoding matrix among the multiple first precoding matrices fed back by the first device may be different from each second precoding matrix among the multiple second precoding matrices, or at least one first precoding matrix among the multiple first precoding matrices fed back by the first device is the same as at least one second precoding matrix among the multiple second precoding matrices.
  • the second device Since the first device feeds back multiple second precoding matrices to the second device, the second device has more options for determining the precoding matrix for the second data stream, so that the second device can select a better precoding matrix for the second data stream.
  • the second information further includes an MCS corresponding to the second precoding matrix.
  • the second device can refer to the MCS in the second information when determining precoding information for the second data stream, so that the second device can determine more reasonable precoding information.
  • the second information further includes rank indication information corresponding to the second precoding matrix.
  • the second device can refer to the rank indication information in the second information when determining precoding information for the second data stream, so that the second device can determine more reasonable precoding information.
  • step 302 may be performed first and then step 301, or step 302 and step 301 may be performed simultaneously.
  • steps 303 and 304 may also be included:
  • Step 303 The second device determines a precoding matrix for the first data stream according to the first information, and determines a precoding matrix for the second data stream according to the second information.
  • the precoding matrix of the first data stream determined by the second device may be the first precoding matrix or may not be the first precoding matrix.
  • the precoding matrix of the second data stream determined by the second device may be the second precoding matrix or may not be the second precoding matrix.
  • Step 304 The second device sends the target data stream.
  • the first device receives the target data stream.
  • the target data stream may include the first data stream.
  • the first data stream sent by the second device may carry the data of the first device, or may not carry the data of the first device.
  • the first data stream sent by the second device may carry the data of one device (such as the first device or the third device), or may carry the data of multiple devices (such as the first device and the third device).
  • the first device can feed back two precoding matrices based on the reference signal of the second device, and the two precoding matrices are used to precode the first data stream and the second data stream, respectively, it is possible to enable a scheme of precoding the first data stream and the second data stream based on the two precoding matrices. Since the present application enables a scheme of precoding the first data stream and the second data stream based on the two precoding matrices, the first device and the second device can communicate based on the first data stream and the second data stream, and then the system capacity can be improved.
  • the target data stream also includes two possible implementation modes: implementation mode A1, the target data stream includes the second data stream; implementation mode A2, the target data stream does not include the second data stream. They are introduced below respectively.
  • the target data stream includes a second data stream.
  • the second device needs to send the data of the first device through the private data stream of the first device. Since the time domain resources of the first data stream and the second data stream overlap, the target data stream sent by the second device includes the first data stream and the second data stream, or it can be understood that the second device superimposes the first data stream and the second data stream in the time domain and then sends them.
  • the target data stream may also include private data streams of other devices, for example, may also include private data streams of a third device, and the time domain resources of the private data stream of the third device intersect with the time domain resources of the first data stream.
  • the second device superimposes the first data stream, the second data stream and the private data stream of the third device in the time domain direction and sends them.
  • the data stream sent by the second device is referred to as the target data stream.
  • the target data stream does not include the second data stream.
  • the second device may not send the private data stream of the first device.
  • the target data stream may include the public data stream of the first device (the public data stream of the first device may carry the data of the first device or may not carry the data of the first device), or the target data stream may include the public data stream of the first device and the private data stream of the third device.
  • the first device can obtain the data of the first device only from the public data stream, and there is no need to try to parse its own private data stream from the received signal.
  • the relationship between the first precoding matrix and the second precoding matrix fed back by the first device can be implemented in multiple ways, which are introduced below through the following implementation B1, implementation B2, implementation B3 and implementation B4. There is no necessary connection between any two implementations in the following implementation B1, implementation B2, implementation B3 and implementation B4, and they can be implemented separately or used in combination.
  • the bandwidth corresponding to the first precoding matrix and the bandwidth corresponding to the second precoding matrix can be configured independently.
  • the bandwidths corresponding to the first precoding matrix and the second precoding matrix may be independently set.
  • the bandwidth corresponding to the first precoding matrix may be different from the bandwidth corresponding to the second precoding matrix.
  • NR defines codebook modes, including mode 1 and mode 2, where the beam in mode 1 is a broadband mode and the beam in mode 2 is a broadband plus subband mode. Since the public data stream has the ability to carry information of multiple users, the public data stream may carry information of multiple users, while the private data stream carries information of a single user. Therefore, in one possible implementation, the bandwidth corresponding to the first precoding matrix can be set to mode 1, and the bandwidth corresponding to the second precoding matrix can be set to mode 2.
  • the number of beams corresponding to the public data stream can be less than the number of beams corresponding to the private data stream, which can also be understood as the granularity of the beams corresponding to the public data stream is coarser and the granularity of the beams corresponding to the private data stream is finer, which can save power consumption on the one hand.
  • the number of beams corresponding to the private data stream is more, and the directivity of the private data stream can be enhanced, so that the energy of the beams corresponding to the private data stream is more concentrated, thereby improving communication performance.
  • the codebook level corresponding to the first precoding matrix and the codebook level corresponding to the second precoding matrix can be configured independently.
  • the codebook levels corresponding to the first precoding matrix and the second precoding matrix may be independently set.
  • the codebook level corresponding to the first precoding matrix may be different from the codebook level corresponding to the second precoding matrix.
  • the number of precoding matrices included in the precoding matrix set corresponding to the public data stream is relatively small, which can also be understood as the granularity of the beam corresponding to the public data stream is relatively coarse, and the number of precoding matrices included in the precoding matrix set corresponding to the private data stream is relatively large, which can also be understood as the granularity of the beam corresponding to the private data stream is relatively fine.
  • power consumption can be saved.
  • the number of beams corresponding to the private data stream is larger, and the directionality of the private data stream can be enhanced, so that the energy of the beam corresponding to the private data stream is more concentrated, thereby improving communication performance.
  • the codebook level corresponding to the first precoding matrix may be set to a one-level codebook
  • the codebook level corresponding to the second precoding matrix may be set to a two-level codebook
  • the first precoding matrix set is Q1
  • the first precoding matrix is q1
  • q1 is an element of Q1.
  • the second precoding matrix set may include two precoding matrix sets, namely, precoding matrix set Q2_1 and precoding matrix set Q2_2.
  • Precoding matrix q2_1 is a precoding matrix in precoding matrix set Q2_1
  • precoding matrix q2_2 is a precoding matrix in precoding matrix set Q2_2.
  • the second precoding matrix is identified as q2, the codebook level corresponding to the second precoding matrix is a two-level codebook, and the second precoding matrix q2 may be (q2_1*q2_2), where * may be represented as multiplication.
  • the first precoding matrix set Q1 may be precoding matrix set Q2_1 or precoding matrix set Q2_2, or the first precoding matrix set Q1 may be precoding matrix set Q2_1 and precoding matrix set Q2_2.
  • the first precoding matrix set Q1 is a subset of precoding matrix set Q2_1.
  • the first precoding matrix set Q1 is a subset of the precoding matrix set Q2_2.
  • the number of precoding resource block groups corresponding to the first precoding matrix and the number of precoding resource block groups corresponding to the second precoding matrix can be configured independently.
  • the precoding resource block groups corresponding to the first precoding matrix and the second precoding matrix may be independently configured.
  • the precoding resource block group corresponding to the first precoding matrix may be different from the precoding resource block group corresponding to the second precoding matrix.
  • the precoding resource block group corresponding to a precoding matrix may refer to the number of physical resource blocks (PRB) on which a precoding matrix is applied, that is, how wide a frequency range a precoding matrix is applicable to.
  • PRB physical resource blocks
  • the number of precoding resource block groups (PRG bundles) corresponding to the first precoding matrix is 8, and the number of precoding resource block groups corresponding to the second precoding matrix is 2.
  • the number of physical resource blocks applied to the precoding matrix corresponding to the public data stream is relatively large, so that the number of precoding matrices required to be used for the public data stream can be reduced, thereby reducing the number of precoding matrices corresponding to the public data stream that needs to be fed back on the first device side, thereby reducing the feedback overhead.
  • the number of physical resource blocks applied to the precoding matrix corresponding to the private data stream is relatively small. Since there are differences in the channels corresponding to different physical resource blocks, the precoding matrix used by the private data stream can be made to better match the channel conditions corresponding to the private data stream, thereby improving communication performance.
  • the first precoding matrix is a precoding matrix in the first precoding matrix set.
  • the second precoding matrix is a precoding matrix in the second precoding matrix set.
  • the precoding matrices included in the first precoding matrix set and the precoding matrices included in the second precoding matrix set can be configured independently.
  • the precoding matrix in the first precoding matrix set and the precoding matrix in the first precoding matrix set corresponding to the second precoding matrix may be independently set.
  • the number of precoding matrices included in the first precoding matrix set may be different from the number of precoding matrices included in the second precoding matrix set.
  • the precoding matrices in the first precoding matrix set may have no intersection with the precoding matrices in the second precoding matrix set, or may have an intersection with them.
  • the first precoding matrix set is a subset of the second precoding matrix set.
  • the precoding matrices in the second precoding matrix set support ranks of 1, 2, 3, ..., N. N is a positive integer.
  • the precoding matrices in the first precoding matrix set may be precoding matrices of rank 1 supported by the second precoding matrix set.
  • the precoding matrices in the first precoding matrix set may be precoding matrices of rank 1 supported by the second precoding matrix set and precoding matrices of rank 2 supported by the second precoding matrix set.
  • the number of sets of precoding matrices that need to be defined can be reduced, thereby reducing signaling overhead and reducing the storage space occupied by the precoding matrices.
  • step 301 there are multiple ways for the first device to send the first information, such as sending it when triggered by the second device, or periodically sending information on the candidate precoding matrix of the first data stream, which are introduced below through implementation mode C1 and implementation mode C2 respectively.
  • the first device sends the first information based on the first trigger information.
  • the second device sends first trigger information to the first device.
  • the first device receives the first trigger information.
  • the first trigger information triggers the first device to feed back information about a candidate precoding matrix of the first data stream.
  • the first device sends first information to the second device based on the first trigger information.
  • the second device when it can determine that the first device needs to feed back the candidate precoding matrix of the common data stream of the first device according to its actual needs, it can send the first trigger information to the first device to trigger the first device to feed back the candidate precoding matrix of the common data stream of the first device. In this way, compared with the solution in which the first device periodically feeds back the candidate precoding matrix of the common data stream of the first device, this solution can save signaling consumption.
  • the first device periodically feeds back information about candidate precoding matrices of a common data stream of the first device.
  • the first device periodically sends information indicating a candidate precoding matrix for the first data stream with a first duration as a period.
  • one of the information indicating a candidate precoding matrix for the first data stream fed back by the first device may be the above-mentioned first information, or it may be understood that the above-mentioned first information is information indicating a candidate precoding matrix for the first data stream sent by the first device in one period.
  • the second device periodically receives information indicating a candidate precoding matrix for the first data stream with a first duration as a period.
  • the first device may send information indicating a candidate precoding matrix of the first data stream within a period, and the information indicating the candidate precoding matrix of the first data stream may indicate one or more candidate precoding matrices.
  • the candidate precoding matrices indicated by the two pieces of information indicating the candidate precoding matrix of the first data stream may be completely different, completely the same, or partially the same.
  • the information indicating the candidate precoding matrix of the first data stream sent by the first device in one period indicates the candidate precoding matrix a1 and the candidate precoding matrix a2, and the information indicating the candidate precoding matrix of the first data stream sent by the first device in another period indicates the candidate precoding matrix a3.
  • Both the candidate precoding matrix a1 and the candidate precoding matrix a2 are different from the candidate precoding matrix a3, or one of the candidate precoding matrix a1 and the candidate precoding matrix a2 is the same as the candidate precoding matrix a4.
  • the information indicating the candidate precoding matrix of the first data stream sent by the first device in one cycle indicates the candidate precoding matrix a1 and the candidate precoding matrix a2
  • the information indicating the candidate precoding matrix of the first data stream sent by the first device in another cycle indicates the candidate precoding matrix a3 and the candidate precoding matrix a4.
  • the candidate precoding matrix a3 is the same as the candidate precoding matrix a1, and the candidate precoding matrix a4 is the same as the candidate precoding matrix a2; for another example, the candidate precoding matrix a3 is different from the candidate precoding matrix a1, and the candidate precoding matrix a4 is different from the candidate precoding matrix a2; for another example, the candidate precoding matrix a3 is the same as the candidate precoding matrix a1, and the candidate precoding matrix a4 is different from the candidate precoding matrix a2; for another example, the candidate precoding matrix a3 is different from the candidate precoding matrix a1, and the candidate precoding matrix a4 is different from the candidate precoding matrix a2; for another example, the candidate precoding matrix a3 is different from the candidate precoding matrix a1, and the candidate precoding matrix a4 is the same as the candidate precoding matrix a2.
  • the information of the above-mentioned first precoding matrix belongs to a candidate precoding matrix indicated by the information indicating the candidate precoding matrix of the first data stream fed back by the first device within a period, and the candidate precoding matrix indicated by the information indicating the candidate precoding matrix of the first data stream fed back by the first device within other periods may also include the first precoding matrix or may not include the first precoding matrix, which is not limited in the embodiments of the present application.
  • the first device may periodically feed back information about candidate precoding matrices for the common data stream of the first device, so that the second device may select based on the most recently received candidate precoding matrix when it is necessary to determine a precoding matrix for the common data stream of the first device.
  • the frequency at which the first device feeds back information about candidate precoding matrices for the common data stream of the first device may be low. In this case, the overhead caused by feedback may be reduced.
  • step 302 there are multiple ways for the first device to send the second information, such as sending it when triggered by the second device, or periodically sending information of the candidate precoding matrix of the first data stream, which are introduced below through implementation mode D1 and implementation mode D2 respectively.
  • the first device sends second information based on second trigger information.
  • the second device sends second trigger information to the first device, and the second trigger information triggers the first device to feedback information about the candidate precoding matrix of the second data stream.
  • the first device receives the second trigger information.
  • the first device sends second information to the second device based on the second trigger information.
  • the second device when the second device determines that the first device needs to feed back the candidate precoding matrix of the private data stream of the first device according to its actual needs, the second device can send the second trigger information to the first device to trigger the first device to feed back the candidate precoding matrix of the private data stream of the first device. In this way, compared with the solution in which the first device periodically feeds back the candidate precoding matrix of the private data stream of the first device, this solution can save signaling consumption.
  • the first device periodically feeds back information about candidate precoding matrices of a private data stream of the first device.
  • the first device periodically sends information indicating a candidate precoding matrix for the second data stream with a second duration as a period.
  • one of the information indicating a candidate precoding matrix for the second data stream fed back by the first device may be the above-mentioned second information, or it may be understood that the above-mentioned second information is information indicating a candidate precoding matrix for the second data stream sent by the first device in one period.
  • the second device periodically receives information indicating a candidate precoding matrix for the second data stream with a second duration as a period.
  • the first device may send information indicating a candidate precoding matrix for the second data stream within a period, and the information indicating the candidate precoding matrix for the second data stream may indicate one or more candidate precoding matrices.
  • the candidate precoding matrices indicated by the two pieces of information indicating the candidate precoding matrix for the second data stream may be completely different, completely the same, or partially the same.
  • the information indicating the candidate precoding matrix of the second data stream sent by the first device in one cycle indicates the candidate precoding matrix b1 and the candidate precoding matrix b2, and the information indicating the candidate precoding matrix of the second data stream sent by the first device in another cycle indicates the candidate precoding matrix b3.
  • Both the candidate precoding matrix b1 and the candidate precoding matrix b2 are different from the candidate precoding matrix b3, or one of the candidate precoding matrix b1 and the candidate precoding matrix b2 is the same as the candidate precoding matrix b4.
  • the information indicating the candidate precoding matrix of the second data stream sent by the first device in one cycle indicates the candidate precoding matrix b1 and the candidate precoding matrix b2
  • the information indicating the candidate precoding matrix of the second data stream sent by the first device in another cycle indicates the candidate precoding matrix b3 and the candidate precoding matrix b4.
  • the candidate precoding matrix b3 is the same as the candidate precoding matrix b1, and the candidate precoding matrix b4 is the same as the candidate precoding matrix b2; for another example, the candidate precoding matrix b3 is different from the candidate precoding matrix b1, and the candidate precoding matrix b4 is different from the candidate precoding matrix b2; for another example, the candidate precoding matrix b3 is the same as the candidate precoding matrix b1, and the candidate precoding matrix b4 is different from the candidate precoding matrix b2; for another example, the candidate precoding matrix b3 is different from the candidate precoding matrix b1, and the candidate precoding matrix b4 is different from the candidate precoding matrix b2; for another example, the candidate precoding matrix b3 is different from the candidate precoding matrix b1, and the candidate precoding matrix b4 is the same as the candidate precoding matrix b2.
  • the information of the above-mentioned second precoding matrix belongs to a candidate precoding matrix indicated by the information indicating the candidate precoding matrix of the second data stream fed back by the first device within a period, and the candidate precoding matrix indicated by the information indicating the candidate precoding matrix of the second data stream fed back by the first device within other periods may also include the second precoding matrix or may not include the second precoding matrix, which is not limited in the embodiments of the present application.
  • the first device may periodically feed back information about candidate precoding matrices for the private data stream of the first device, so that the second device may make a selection based on the most recently received candidate precoding matrix when it is necessary to determine a precoding matrix for the private data stream of the first device.
  • the frequency with which the first device feeds back information about the candidate precoding matrix of the private data stream of the first device may be different from the frequency with which the first device feeds back information about the candidate precoding matrix of the public data stream of the first device, which can also be understood as the first duration may be different from the second duration.
  • the frequency at which the first device feeds back the information of the candidate precoding matrix of the private data stream of the first device can be higher. This allows the second device to determine a precoding matrix of the private data stream of the first device that is more in line with the actual situation.
  • the frequency at which the first device feeds back the information of the candidate precoding matrix of the private data stream of the first device can be higher than the frequency at which the first device feeds back the information of the candidate precoding matrix of the public data stream of the first device, which can also be understood as the first duration can be greater than the second duration.
  • the first duration can be 10 milliseconds
  • the second duration can be 5 milliseconds.
  • the first device can reduce the amount of information of the candidate precoding matrix of the public data stream of the first device fed back, thereby reducing the overhead required to feed back the information of the candidate precoding matrix of the public data stream of the first device and the information of the candidate precoding matrix of the private data stream of the first device.
  • the first device may feedback information about the candidate precoding matrix of the public data stream of the first device through the above-mentioned implementation mode C1 or implementation mode C2, and the first device may feedback information about the candidate precoding matrix of the private data stream of the first device through the above-mentioned implementation mode D1 or implementation mode D2.
  • the first device may select the above-mentioned implementation mode C1 and the above-mentioned implementation mode D1.
  • the first trigger information and the second trigger information may be the same information, or two different information.
  • the first trigger information and the second trigger information may be carried in one message or in two messages.
  • Figure 4 exemplarily shows a possible flow chart of a communication method provided by an embodiment of the present application.
  • the scheme shown in Figure 4 is introduced by taking the interaction between the first device and the second device as an example.
  • the relevant description of the first device and the second device please refer to the relevant description of the aforementioned Figure 3, which will not be repeated.
  • the following introduction is made by taking the first device as a terminal device and the second device as a network device as an example. It can be understood that the embodiment shown in Figure 4 and the embodiment shown in Figure 3 can be combined or independent of each other.
  • the method includes:
  • Step 401 The second device sends third information to the first device.
  • the first device receives third information from the second device.
  • the third information includes at least one of the following: information indicating the time-frequency resources occupied by the first data stream; information indicating the modulation and coding method of the first data stream; or, the DMRS port corresponding to the first data stream.
  • the third information may also include information indicating the precoding matrix used by the first data stream, or may not include information indicating the precoding matrix used by the first data stream.
  • the first device may perform channel estimation based on the received reference signal, and recover the required data from the received information based on the channel estimation result.
  • the relevant description of the first data stream please refer to the relevant description in the embodiment of Figure 3 above, which will not be repeated here.
  • the following is an introduction taking the first data stream as the common data stream of the first device as an example.
  • the first data stream may include data of the first device, or may not include data of the first device.
  • the third information may further include position indication information indicating the position of the data of the first device in the first data stream. In this way, the first device can know which bits of its own information are located in the first data stream, and then obtain its own information from the public data stream.
  • the location indication information may include the bits occupied by the data of the first device in the first data stream.
  • there is a mapping relationship between the physical bits and the logical bits in the first data stream and the physical bits in this application refer to the actual bits in the first data stream.
  • the mapping relationship between the physical bits and the logical bits can be called virtual mapping.
  • the location indication information may include identification information of the logical bits corresponding to the physical bits occupied by the data of the first device in the first data stream. In this way, the number of bits occupied by the location indication information of the second device can be reduced, thereby reducing overhead.
  • the logical bits may be further divided into logical bit groups.
  • the location indication information may include group identification information of the logical bit group corresponding to the data of the first device.
  • the logical bit group includes one or more continuous logical bits, and the logical bit group has a mapping relationship with one physical bit, multiple continuous physical bits, or multiple discontinuous physical bits.
  • One logical bit has a mapping relationship with one or more physical bits. This can improve the flexibility of the solution.
  • FIG5 exemplarily shows a possible mapping relationship between logical bits and physical bits.
  • a logical bit has a virtual mapping relationship with a physical bit.
  • logical bit 0 has a mapping relationship with physical bit 1
  • logical bit 1 has a mapping relationship with physical bit 4.
  • the public information portion sent to a user is continuously mapped.
  • the logical bits corresponding to the information of UE1 are logical bits 0 to logical bits 63
  • the logical bits corresponding to the information of UE2 are a series of continuous logical bits after logical bit 64.
  • the logical bits can be first divided into logical bit groups, for example, logical bits 0 to logical bits 63 are a logical bit group, and logical bits 64 to logical bits 127 are a logical bit group.
  • the location indication information corresponding to UE1 may be the starting point and length information of the logical bit group corresponding to the information of UE1 (for example, the location information of UE1 may include: 00000000 and 01000000, where 00000000 represents the starting point of the logical bit group of the information of UE1, and 01000000 represents the length of the logical bit group corresponding to the information of UE1), or the starting point and end point of the logical bit group.
  • the logical bit groups corresponding to UE1 may be indicated by bitmap mapping, and the location indication information corresponding to UE1 may be information indicating the logical bit group corresponding to UE1.
  • the third information also includes identification information of the layer to which the codeword corresponding to the data of the first data stream is mapped.
  • the first device can parse the first data stream according to the identification information of the layer corresponding to the first data stream, thereby reducing the difficulty of the first device parsing the first data stream.
  • the codeword corresponding to the data of the first data stream and the codeword corresponding to the second data stream can be set independently.
  • the data of the second data stream can correspond to one or more codewords.
  • the codeword corresponding to the data of the first data stream is different from the codeword corresponding to the data of the second data stream.
  • One of the one or more codewords of the second data stream can be mapped to one or more layers.
  • the data of the first data stream can correspond to one or more codewords.
  • One of the one or more codewords corresponding to the data of the first data stream can be mapped to one or more layers.
  • the layer to which the codeword corresponding to the data of the first data stream is mapped is different from the layer to which the codeword corresponding to the data of the second data stream is mapped, thereby reducing the difficulty of the first device parsing the data.
  • the number of layers received by the first device is the sum of the number of layers mapped with the codewords of the public data stream of the first device and the number of layers mapped with the codewords of the private data stream of the first device.
  • the codewords of the public data stream of the first device are mapped to one layer.
  • Table 1 illustrates an example of a mapping of codewords to layers. As shown in FIG1 , codeword CCW1 can be mapped to layer 1. Table 1 also shows information for indicating whether layer 1 includes public information. For example, in Table 1, if the preset field "public information" is 0, it indicates that layer 1 does not carry public information. If the preset field "public information" is 1, it indicates that layer 1 carries public information.
  • the private information layer number table may be similar to the table in NR.
  • the following is an exemplary illustration of several codeword-to-layer mapping examples provided in the embodiments of the present application through FIG.
  • the first device is UE1 and the second device is a network device.
  • FIG6 shows the data processing flow inside the network device.
  • the information of UE1 corresponds to two codewords, namely CW1 and CW2, wherein CW1 is the codeword corresponding to the information of the private data stream carried by UE1, and CW2 is the codeword corresponding to the information of UE1 and the information of UE2 carried by the public data stream of UE1.
  • the information of UE2 corresponds to two codewords, namely CW3 and codeword CW2, wherein CW3 is the codeword corresponding to the information of the private data stream carried by UE2.
  • CW1 of UE1 can be mapped to two layers, namely layer 1 and layer 2, and then sent through DMRS port 10001 and DMRS port 10002 respectively.
  • CW3 of UE2 can be mapped to two layers, namely layer 1 and layer 2, and then sent through DMRS port 10003 and DMRS port 10004 respectively.
  • CW2 can be mapped to one layer, namely layer 3, and then sent through DMRS port 10005.
  • the network device encodes the public data streams of UE1 and UE2, the private data stream of UE1, and the private data stream of UE2 respectively, and then superimposes the encoded data streams and sends them through the antenna.
  • the codeword of UE1's private data stream corresponds to two layers (layer 1 and layer 2)
  • the codeword of UE1's public data stream corresponds to one layer (layer 3). Therefore, UE1's information corresponds to three layers, namely layer 1, layer 2, and layer 3.
  • the codeword of UE2's private data stream corresponds to two layers (layer 1 and layer 2)
  • the codeword of UE2's public data stream corresponds to one layer (layer 3). Therefore, UE2's information corresponds to three layers, namely layer 1, layer 2, and layer 3.
  • the first device is UE1 and the second device is a network device.
  • FIG7 shows the data processing flow inside the network device.
  • the information of UE1 corresponds to three codewords, namely CW1, CW2 and CW3, wherein CW1 and CW2 are codewords corresponding to the information of the private data stream carried by UE1, and CW3 is a codeword corresponding to the public data stream of the information carried by UE1 and UE2.
  • the information of UE2 corresponds to two codewords, namely CW4 and codeword CW3, wherein CW4 is a codeword corresponding to the information of the private data stream carried by UE2.
  • CW1 of UE1 can be mapped to three layers, namely layer 1, layer 2 and layer 3, and then sent through DMRS port 10001, DMRS port 10002 and DMRS port 10003 respectively.
  • CW2 of UE1 can be mapped to two layers, namely layer 4 and layer 5, and then sent through DMRS port 10004 and DMRS port 10005 respectively.
  • CW4 of UE2 can be mapped to two layers, namely layer 1 and layer 2, and then sent through DMRS port 10006 and port 10007 respectively.
  • CW3 can be mapped to one layer, namely layer 6, and then sent through DMRS port 10008.
  • the network device encodes the public data streams of UE1 and UE2, the private data stream of UE1, and the private data stream of UE2 respectively, and then superimposes the encoded data streams and sends them through the antenna.
  • the codeword of UE1's private data stream corresponds to five layers (layer 1, layer 2, layer 3, layer 4, and layer 5)
  • the codeword of UE1's public data stream corresponds to one layer (layer 6). Therefore, UE1's information corresponds to six layers in total, namely layer 1, layer 2, layer 3, layer 4, layer 5, and layer 6.
  • the codeword of UE2's private data stream corresponds to two layers (layer 1 and layer 2)
  • the codeword of UE2's public data stream corresponds to one layer (layer 6). Therefore, UE2's information corresponds to three layers in total, namely layer 1, layer 2, and layer 6.
  • the third information may be carried in a specified DCI (UE-specific DCI) or a group DCI (group DCI) of the first device, or the third information may be carried in a specified DCI (UE-specific DCI) and a group DCI (group DCI) of the first device.
  • the bandwidth occupied by the public data stream of the first device and the private data stream of the first device may be different. In this way, network parameters can be set more flexibly for the public data stream and the private data stream.
  • Step 402 The second device sends fourth information to the first device.
  • the first device receives fourth information from the second device.
  • Step 402 is an optional step, and step 402 may not be performed in the embodiment shown in Figure 4. There is no necessary order relationship between the above steps 401 and 402, for example, step 402 may be performed first and then step 401, or step 402 and step 401 may be performed simultaneously.
  • the fourth information includes at least one of the following: information indicating the time-frequency resources occupied by the second data stream; information indicating the modulation and coding method of the second data stream; information indicating the DMRS port corresponding to the second data stream; or identification information of the layer of codeword mapping corresponding to the data of the first device in the second data stream.
  • the second data stream For the related description of the second data stream, reference may be made to the related description in the embodiment of FIG. 3 , which will not be repeated here. The following description will be made by taking the second data stream as the private data stream of the first device as an example.
  • Step 403 The second device sends the target data stream.
  • the first device receives the target data stream.
  • the target data stream includes the first data stream, which can also be understood as the first device receiving the first data stream in the target data stream based on the third information.
  • the first device can determine the relevant information of the first data stream based on the third information, and then obtain the relevant information of the first device in the first data stream from the received data.
  • the target data stream may also include or may not include the second data stream.
  • the relevant description of the target data stream can refer to the relevant description of the target data stream in the embodiment of Figure 3, which will not be repeated.
  • the time domain resources of the first data stream and the second data stream have an intersection, and the relationship between the first data stream and the second data stream can refer to the relevant description in the embodiment of Figure 3, which will not be repeated.
  • the first device receives the first data stream and the second data stream from the second device based on the third information.
  • the first device can determine the relevant information of the second data stream according to the fourth information, and then obtain the information in the second data stream from the received data.
  • step 401 can be performed after step 301 and before step 303
  • step 402 can be performed after step 302 and before step 303
  • step 403 can be step 303.
  • the first data stream included in the target data stream sent by the first device and sent by the second device has the ability to carry the information of the first device, and the first data stream may carry the information of the first device, or may not carry the information of the first device.
  • the second device may indicate to the first device whether the first data stream carries the information of the first device.
  • the second device may indicate whether the first data stream carries the information of the first device through indication information or through other means instead of indication information, which is introduced below through the following implementation E1 and implementation E2 respectively.
  • the second device indicates through indication information whether the first data stream carries information of the first device.
  • the second device sends information indicating that the first data stream includes data of the first device to the first device.
  • the first device receives information indicating that the first data stream includes data of the first device from the second device.
  • the first device obtains data of the first device from the first data stream based on the data indicating that the first data stream includes data of the first device.
  • the information indicating that the first data stream includes data of the first device is carried in the DCI, for example, it can be carried in a preset first field in the DCI, and the information indicating that the first data stream includes data of the first device can be the first preset value of the preset first field. In this way, there is no need to set up a new signaling for carrying the information indicating that the first data stream includes data of the first device, thereby reducing signaling overhead and being more compatible with the prior art.
  • the second device sends information indicating that the first data stream does not include the data of the first device to the first device.
  • the first device receives information from the second device indicating that the first data stream does not include the data of the first device.
  • the first device determines that the first data stream does not include the data of the first device based on the information indicating that the first data stream does not include the data of the first device, and then does not need to try to obtain the data of the first device from the first data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • information indicating that the first data stream does not include data of the first device is carried in the DCI, for example, it can be carried in a preset second field in the DCI, and the information indicating that the first data stream does not include data of the first device can be a second preset value of the preset second field.
  • the second field can be the same field as the first field, or can be two different fields.
  • the first preset value is different from the second preset value.
  • the first preset value and the second preset value can be the same or different.
  • the second device indicates whether the first data stream carries the information of the first device in other ways (without using indication information).
  • the second device indicates whether the first data stream carries information of the first device by scrambling the DCI using different radio network temporary identities (RNTIs). For example, the second device sends the first DCI to the first device. Correspondingly, the first device receives the first DCI. When the first device determines that the first DCI is scrambled using the first RNTI, it determines that the first data stream includes data of the first device. In another possible implementation, when the first device determines that the first DCI is scrambled using the second RNTI, it determines that the first data stream does not include data of the first device. The first RNTI and the second RNTI are different. Through this implementation, it is possible to implicitly indicate whether the first data stream includes data of the first device, thereby saving the amount of information sent by the second device, thereby improving data transmission efficiency.
  • RNTIs radio network temporary identities
  • the target data stream sent by the first device and sent by the second device may include the second data stream, or may not include the second data stream.
  • the second device may indicate to the first device whether the target data stream carries the second data stream.
  • the second device may indicate whether the target data stream carries the second data stream through indication information or through other means instead of indication information, which is described below through the following implementation F1 and implementation F2, respectively.
  • the second device indicates, through indication information, whether the target data stream carries the second data stream.
  • the second device sends information indicating that the target data stream includes the second data stream to the first device.
  • the first device receives information indicating that the target data stream includes the second data stream from the second device. Based on the indication that the target data stream includes the second data stream, the first device obtains data of the second data stream from the target data stream.
  • the information indicating that the target data stream includes the second data stream is carried in the DCI, for example, it can be carried in a preset third field in the DCI, and the information indicating that the target data stream includes the second data stream can be a third preset value of the preset third field.
  • the second device sends information indicating that the target data stream does not include the second data stream to the first device.
  • the first device receives information indicating that the target data stream does not include the second data stream from the second device.
  • the first device determines that the target data stream does not include the second data stream based on the indication that the target data stream does not include the second data stream, and then does not need to attempt to obtain the private data stream of the first device from the target data stream, thereby reducing the workload of the first device and reducing the power consumption of the first device.
  • the information indicating that the target data stream does not include the second data stream is carried in the DCI, for example, it can be carried in a preset field in the DCI, and the information indicating that the target data stream does not include the second data stream can be the fourth preset value of the preset fourth field.
  • the fourth field can be the same field as the third field, or it can be two different fields. When the third field is the same as the fourth field, the third preset value is different from the fourth preset value. When the third field is different from the fourth field, the third preset value and the fourth preset value can be the same or different.
  • the second device indicates whether the target data stream carries the second data stream in other ways (without using indication information).
  • the second device indicates whether the target data stream carries the second data stream by scrambling the DCI with different RNTIs. For example, the second device sends the second DCI to the first device. Correspondingly, the first device receives the second DCI. When the first device determines that the second DCI is scrambled with the third RNTI, it determines that the target data stream includes the second data stream. In another possible implementation, when the first device determines that the second DCI is scrambled with the fourth RNTI, it determines that the target data stream does not include the second data stream. The third RNTI and the fourth RNTI are different. In this way, it is possible to implicitly determine whether the target data stream includes the second data stream. This implementation can save the amount of information sent by the second device, thereby improving data transmission efficiency.
  • sending information to a terminal device can be understood as the destination of the information being the terminal device.
  • module A sending information to a terminal includes: module A sending the information to the terminal through an air interface, and optionally, module A can perform baseband and/or mid-RF operations on the information; or, module A delivers the information to module B, and module B sends the information to the terminal.
  • module B sends the information to the terminal it can be transparent transmission of the information, segmentation of the information and sending the information, or multiplexing the information with other information and sending the information.
  • module B can perform baseband and/or mid-RF operations on the information and then send the information, etc.
  • module B can encapsulate the information in a data packet.
  • module B can also add a header and/or padding bits to the data packet, etc.
  • receiving information from a terminal device can be understood as the origin of the information being the terminal device.
  • module A receiving information from a terminal device includes: module A receiving the information from the terminal through an air interface, and optionally, module A can perform baseband and/or mid-RF operations on the information; or, module B receives the information from the terminal through an air interface, and delivers the information to module A.
  • module B delivers the information to module A, including: transparently delivering the received information to module A, combining the received multiple segments into the information and delivering it to module A, or extracting the information from the multiplexed information and delivering it to module A.
  • module B can perform baseband and/or mid-RF operations on the received information and then send the information, etc.
  • the information received by module B is encapsulated in a data packet.
  • the data packet includes a header and/or padding bits, etc.
  • the module B can be a single module or multiple modules coupled in sequence, without limitation.
  • module A is a DU module
  • module B is a RU module
  • module A is a CU-CP module
  • module B is a DU module and a RU module.
  • the above mainly introduces the solution provided by the present application from the perspective of the interaction between various network elements.
  • the above-mentioned network elements include hardware structures and/or software modules corresponding to the execution of various functions.
  • the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.
  • Fig. 8 is a schematic diagram of the structure of the device provided in the embodiment of the present application.
  • the device provided in Fig. 8 can be the first device or the second device in Fig. 3 and Fig. 4.
  • the device 1301 is used to implement the functions of the network element of the embodiment of the present application.
  • the network element may be a base station, a terminal, a DU, a CU, a CU-CP, a CU-UP or a RU.
  • the device 1301 may be the network element, or a device that can be installed in the network element, or a device that can be used in combination with the network element, without limitation.
  • the device may be a chip or a chip system.
  • the device 1301 includes an interface 1303 and a processor 1302.
  • the processor 1302 is used to execute a program 1305.
  • the processor 1302 may store the program 1305, or obtain the program 1305 from other devices or other equipment (for example, from the memory 1304 or from a third-party website).
  • the device 1301 includes a memory 1304.
  • the memory 1304 is used to store a program 1306.
  • the program 1306 may be pre-stored or subsequently loaded.
  • the memory 1304 may also be used to store necessary data.
  • Processor 1302 may include one or more processors as a combination of computing devices.
  • Processor 1302 may include one or more of the following: a microprocessor, a microcontroller, a digital signal processor (DSP), a digital signal processing device (DSPD), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device (PLD), a gated logic, a transistor logic, a discrete hardware circuit, a processing circuit or other suitable hardware, firmware, and/or a combination of hardware and software configured to perform the various functions described in the embodiments of the present application.
  • Processor 1302 may be a general-purpose processor or a dedicated processor.
  • processor 1302 may be a baseband processor or a central processing unit.
  • the baseband processor may be used to process communication protocols and communication data.
  • the central processing unit may be used to execute software programs and process data in the software programs.
  • the interface 1303 may include any suitable hardware or software for enabling communication with one or more computer devices (e.g., network elements of embodiments of the present application).
  • the interface 1303 may include terminals and/or pins for coupling wires for wired connections or coupling wireless interfaces for wireless connections.
  • the interface 1303 may include a transmitter, a receiver, an interface, and/or an antenna.
  • the interface may be configured to enable communication between computer devices (e.g., network elements of embodiments of the present application) using any available protocol (e.g., 3GPP standard protocols).
  • the program in the embodiments of the present application refers to software in a broad sense.
  • Software can be a program code, a program, a subroutine, an instruction set, a code, a code segment, a software module, an application, a software application, etc.
  • the program can be run in a processor and/or a computer to perform the various functions and/or processes described in the embodiments of the present application.
  • the memory 1304 may store necessary data required when the processor 1302 executes the software.
  • the memory 1304 may be implemented using any suitable storage technology.
  • the memory 1304 may be any available storage medium that can be accessed by the processor and/or computer.
  • Non-limiting examples of storage media include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), removable media, optical disk storage, magnetic disk storage media, magnetic storage devices, flash memory, registers, state memory, remotely mounted memory, local or remote memory components, or any other medium that can carry or store software, data or information and can be accessed by the processor/computer.
  • the memory 1304 and the processor 1302 may be provided separately or integrated together.
  • the processor 1302 may read information from the memory 1304 and store and/or write information in the memory.
  • the memory 1304 may be integrated in the processor 1302.
  • the processor 1302 and the memory 1304 may be provided in an integrated circuit (e.g., an application-specific integrated circuit (ASIC)).
  • the integrated circuit may be provided in a network element or other network node in an embodiment of the present application.
  • the dotted line of the memory 1304 in the figure further indicates that the memory is optional.
  • the communication device 1301 may further include a bus system, wherein the processor 1302 , the memory 1304 , and the interface 1303 may be connected via the bus system.
  • the device 1301 may be a first device or a second device, or may be a chip (system) or a circuit, such as a chip (system) or a circuit that may be disposed in the first device, or a chip (system) or a circuit that may be disposed in the second device.
  • a chip (system) or a circuit such as a chip (system) or a circuit that may be disposed in the first device, or a chip (system) or a circuit that may be disposed in the second device.
  • the processor 1302 is used to send first information to the second device through the interface 1303, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode the first data stream.
  • the processor 1302 is used to send second information to the second device through the interface 1303, the second information includes information indicating a second precoding matrix, the second precoding matrix is a candidate precoding matrix for the second device to precode the second data stream, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the processor 1302 is used to receive first trigger information through the interface 1303, the first trigger information triggers the first device to feedback information of the candidate precoding matrix of the first data stream, and send the first information to the second device based on the first trigger information.
  • the processor 1302 is configured to receive second trigger information through the interface 1303, the second trigger information triggering the first device to feed back information about a candidate precoding matrix of a second data stream, and send second information to the second device based on the second trigger information.
  • the processor 1302 is configured to periodically send information indicating a candidate precoding matrix for the first data stream with a first duration as a period through the interface 1303.
  • One of the information indicating the candidate precoding matrix for the first data stream is the first information.
  • the processor 1302 is configured to periodically send information indicating a candidate precoding matrix for the second data stream with a second duration as a period through the interface 1303.
  • One of the information indicating the candidate precoding matrix for the second data stream is the second information.
  • the processor 1302 is used to receive first information from the first device through the interface 1303, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode the first data stream.
  • the processor 1302 is used to receive second information from the first device through the interface 1303, the second information includes information indicating a second precoding matrix, the second precoding matrix is a candidate precoding matrix for the second device to precode the second data stream, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the processor 1302 is configured to send first trigger information to the first device through the interface 1303, where the first trigger information triggers the first device to feed back information about a candidate precoding matrix of the first data stream.
  • the processor 1302 is configured to send second trigger information to the first device through the interface 1303, where the second trigger information triggers the first device to feed back information about a candidate precoding matrix of the second data stream.
  • the processor 1302 is configured to periodically receive information indicating a candidate precoding matrix for the first data stream with a first duration as a period through the interface 1303.
  • One of the information indicating the candidate precoding matrix for the first data stream is the first information.
  • the processor 1302 is configured to periodically receive information indicating a candidate precoding matrix for the second data stream with a second duration as a period through the interface 1303.
  • One of the information indicating the candidate precoding matrix for the second data stream is the second information.
  • processor 1302 is used to receive third information from the second device through interface 1303, and receive a first data stream and a second data stream from the second device based on the third information, and time domain resources of the first data stream and the second data stream have an intersection.
  • the processor 1302 is configured to receive fourth information from the second device through the interface 1303 .
  • the processor 1302 is configured to receive information from the second device through the interface 1303 indicating that the first data stream includes data of the first device, and obtain the data of the first device from the first data stream based on the indication that the first data stream includes data of the first device.
  • the processor 1302 is configured to receive the first DCI through the interface 1303.
  • the processor 1302 is configured to determine that the first data stream includes data of the first device when determining that the first DCI is scrambled using the first RNTI.
  • the processor 1302 is configured to receive the first DCI through the interface 1303.
  • the processor 1302 is configured to determine that the first data stream does not include data of the first device when determining that the first DCI is scrambled using the second RNTI.
  • the processor 1302 is configured to receive a target data stream from a second device based on the third information through the interface 1303, where the target data stream includes the first data stream.
  • the processor 1302 is configured to receive information indicating that the target data stream includes a second data stream from the second device through the interface 1303, where the second data stream is a data stream of the first device.
  • the processor 1302 is configured to obtain data in the second data stream from the target data stream based on the information indicating that the target data stream includes the second data stream.
  • the processor 1302 is configured to receive a target data stream from a second device based on the third information through the interface 1303, where the target data stream includes the first data stream.
  • the processor 1302 is configured to receive a second DCI through the interface 1303, and the processor 1302 is configured to determine that the target data stream includes information about the second data stream when determining that the second DCI is scrambled using the third RNTI.
  • the processor 1302 is configured to receive a target data stream from the second device based on the third information through the interface 1303, where the target data stream includes the first data stream.
  • the processor 1302 is configured to determine that the target data stream does not include information about the second data stream when determining that the second DCI is scrambled using the fourth RNTI.
  • processor 1302 is used to send third information to the first device through interface 1303, processor 1302 is used to send a first data stream and a second data stream to the first device through interface 1303, and time domain resources of the first data stream and the second data stream have an intersection.
  • the processor 1302 is configured to send fourth information to the first device through the interface 1303 .
  • the processor 1302 is configured to send information indicating that the first data stream includes data of the first device to the first device through the interface 1303 .
  • the processor 1302 is configured to send a first DCI to the first device through the interface 1303 , where the first DCI is scrambled with a first RNTI, and the first RNTI indicates that the first data stream includes data of the first device.
  • the processor 1302 is configured to send a first DCI to the first device through the interface 1303 , where the first DCI is scrambled with a second RNTI, and the second RNTI indicates that the first data stream does not include data of the first device.
  • the processor 1302 is used to send a target data stream to the first device through the interface 1303, where the target data stream includes the first data stream. In one possible implementation, the processor 1302 is used to send information indicating that the target data stream includes a second data stream to the first device through the interface 1303, where the second data stream is the data stream of the first device.
  • the processor 1302 is used to send a target data stream to the first device through the interface 1303, and the target data stream includes the first data stream.
  • the second device sends a second DCI to the first device, and the second DCI is scrambled using a third RNTI, and the third RNTI indicates that the target data stream includes information of the second data stream.
  • the processor 1302 is used to send a target data stream to the first device through the interface 1303, and the target data stream includes the first data stream. In one possible implementation, the processor 1302 is used to send a second DCI to the first device through the interface 1303, and the second DCI is scrambled using a fourth RNTI, and the fourth RNTI indicates that the target data stream does not include information about the second data stream.
  • FIG9 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the device 1401 may include a transceiver 1403 and a processor 1402. Further, the device 1401 may include a memory 1404. The dotted line of the memory 1404 in the figure further indicates that the memory is optional.
  • the transceiver 1403 is used to input and/or output information; the processor 1402 is used to execute a computer program or instruction so that the device 1401 implements the first device or the second device in the relevant scheme of FIG3 or FIG4 above.
  • the transceiver 1403 can implement the scheme implemented by the interface 1303 of FIG8 above
  • the processor 1402 can implement the scheme implemented by the processor 1302 of FIG8 above
  • the memory 1404 can implement the scheme implemented by the memory 1304 of FIG8 above, which will not be repeated here.
  • FIG10 is a schematic diagram of a communication device provided in an embodiment of the present application.
  • the device provided in FIG10 may be the first device or the second device in FIG3 and FIG4.
  • the device 1501 may be the first device or the second device, or may be a chip (system) or a circuit, such as a chip (system) or a circuit that may be provided in the first device, or a chip (system) or a circuit that may be provided in the second device.
  • the device 1501 includes a processing unit 1502 and a communication unit 1503. Further, the device 1501 may include a storage unit 1504, or may not include the storage unit 1504.
  • the storage unit 1504 in the figure is a dotted line to further indicate that the storage is optional.
  • the processing unit 1502 is used to send first information to the second device through the communication unit 1503, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode the first data stream.
  • the processing unit 1502 is used to send second information to the second device through the communication unit 1503, the second information includes information indicating a second precoding matrix, the second precoding matrix is a candidate precoding matrix for the second device to precode the second data stream, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the processing unit 1502 is used to receive first information from the first device through the communication unit 1503, the first information includes information indicating a first precoding matrix, and the first precoding matrix is a candidate precoding matrix for the second device to precode the first data stream.
  • the processing unit 1502 is used to receive second information from the first device through the communication unit 1503, the second information includes information indicating a second precoding matrix, the second precoding matrix is a candidate precoding matrix for the second device to precode the second data stream, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the processing unit 1502 is used to receive third information from the second device through the communication unit 1503, and receive a first data stream and a second data stream from the second device based on the third information, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the processing unit 1502 is used to send third information to the first device through the communication unit 1503, and send the first data stream and the second data stream to the first device, and the time domain resources of the first data stream and the second data stream have an intersection.
  • the division of the units of the above communication device is only a division of logical functions, and in actual implementation, all or part of them can be integrated into one physical entity, or they can be physically separated.
  • the communication unit 1503 can be implemented by the interface 1303 of Figure 8 above, and the processing unit 1502 can be implemented by the processor 1302 of Figure 8 above.
  • the present application also provides a computer program product, which includes: computer program code or instructions, when the computer program code or instructions are executed on a computer, the computer executes the method of any one of the embodiments shown in Figure 3 or Figure 4.
  • the present application also provides a computer-readable storage medium, which stores a program code.
  • the program code runs on a computer, the computer executes the method of any one of the embodiments shown in Figure 3 or Figure 4.
  • the present application also provides a chip system, which may include a processor.
  • the processor is coupled to the memory and can be used to execute the method of any one of the embodiments shown in Figure 3 or Figure 4.
  • the chip system also includes a memory.
  • the memory is used to store a computer program (also referred to as code, or instruction).
  • the processor is used to call and run the computer program from the memory, so that the device equipped with the chip system executes the method of any one of the embodiments shown in Figure 3 or Figure 4.
  • the present application also provides a system, which includes one or more of the aforementioned first devices and second devices.
  • the present application also provides a computer program product, wherein the computer program product stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the method of any one of the embodiments shown in FIG. 3 or FIG. 4 .
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by the computer or a data storage device such as a server or data center that contains one or more available media integrated.
  • Available media can be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state discs (SSD)), etc.
  • magnetic media e.g., floppy disks, hard disks, tapes
  • optical media e.g., high-density digital video discs (DVD)
  • DVD digital video discs
  • semiconductor media e.g., solid state discs (SSD)
  • the network devices in the above-mentioned various device embodiments correspond to the network devices or terminal devices in the terminal devices and method embodiments, and the corresponding modules or units perform the corresponding steps.
  • the communication unit transmits the steps of receiving or sending in the method embodiment, and other steps except sending and receiving can be performed by the processing unit (processor).
  • the functions of the specific units can refer to the corresponding method embodiments.
  • the processor can be one or more.
  • a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and/or a computer.
  • applications running on a computing device and a computing device can be components.
  • One or more components may reside in a process and/or an execution thread, and a component may be located on a computer and/or distributed between two or more computers.
  • these components may be executed from various computer-readable media having various data structures stored thereon.
  • Components may, for example, communicate through local and/or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and/or a network, such as the Internet interacting with other systems through signals).
  • signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and/or a network, such as the Internet interacting with other systems through signals).
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of units is only a logical function division. There may be other division methods in actual implementation.
  • multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. If the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Error Detection And Correction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

一种通信方法、装置、芯片系统、存储介质及计算机程序产品，涉及通信领域，用于提高系统容量。本申请中第一装置向第二装置发送第一信息。第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。第一装置向第二装置发送第二信息。第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。由于第一装置可以分别反馈第一数据流和第二数据流对应的候选预编码矩阵，因此可以使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案，继而可以提高系统容量。

Description

通信方法、装置、芯片系统、存储介质及计算机程序产品 技术领域
本申请涉及通信领域，尤其涉及一种通信方法、装置、芯片系统、存储介质及计算机程序产品。
背景技术
在无线通信系统中，发射端在获得信道状态信息(Channel State Information，CSI)后，可以通过预编码矩阵发射信号，以提高整个系统性能。例如接收端的信号可以表示为y＝HVs+n；其中，y表示接收端信号，H表示信道状态信息，V表示预编码矩阵，s表示信号，n表示噪声。在发射端和接收端一般都存储有预编码矩阵V构成的集合，通过接收端反馈预编码矩阵指示(Precoding Matrix Indicator，PMI)，发射端就可以获得发射信号所需要的预编码矩阵。
基于实用性的考虑，如计算复杂度、反馈信息量等，多输入多输出(Multi Input Multi Output，MIMO)系统中使用的预编码一般为线性预编码，其主要思想是将不同流映射到彼此(近乎)正交的子空间中，从而实现不同流间数据的解耦。然而在实际场景下这种通信方式会带来一些问题，比如系统容量较少等。基于此，亟需一种通信方案，用于提高系统容量。
发明内容
本申请提供一种通信方法、装置、芯片系统、存储介质及计算机程序产品，用于提高系统容量。
第一方面，本申请实施例提供一种通信方法，该通信方法可以由第一装置执行。本申请涉及到的第一装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。
该方法中，第一装置向第二装置发送第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。第一装置向第二装置发送第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
通过上述内容可以看出，由于第一数据流和第二数据流的时域资源有交集，且第一装置基于第二装置的参考信号可以分别反馈两个预编码矩阵，且该两个预编码矩阵分别用于对第一数据流和第二数据流进行预编码，因此可以使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案。又由于本申请使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案，因此第一装置和第二装置可以基于第一数据流和第二数据流进行通信，继而可以提高系统容量。
一种可能的实施方式中，第一信息还包括第一预编码矩阵对应的调制与编码策略(modulation and coding scheme，MCS)。如此，第二装置在为第一数据流确定预编码信息时可以参考第一信息中的MCS，从而可以使第二装置确定出更合理的预编码信息。其中，MCS包括正交振幅调制(quadrature amplitude modulation，QAM)调制阶数和/或码率等信 息。
一种可能的实施方式中，第一信息还包括第一预编码矩阵对应的秩指示信息。如此，第二装置在为第一数据流确定预编码信息时可以参考第一信息中的秩指示信息，从而可以使第二装置确定出更合理的预编码信息。
一种可能的实施方式中，第二信息还包括第二预编码矩阵对应的MCS。如此，第二装置在为第二数据流确定预编码信息时可以参考第二信息中的MCS，从而可以使第二装置确定出更合理的预编码信息。
一种可能的实施方式中，第二信息还包括第二预编码矩阵对应的秩指示信息。如此，第二装置在为第二数据流确定预编码信息时可以参考第二信息中的秩指示信息，从而可以使第二装置确定出更合理的预编码信息。
第一预编码矩阵和第二预编码矩阵对应的带宽可以是独立设置的。第一预编码矩阵对应的带宽与第二预编码矩阵对应的带宽可以不同。比如第一预编码矩阵对应的带宽设置为新无线(new radio，NR)中定义的码本模式中的模式1，将第二预编码矩阵对应的带宽设置为NR中定义的码本模式中的模式2，其中模式1中波束为宽带模式，模式2中波束为宽带加子带模式。一种可能的实施方式中，第一预编码矩阵和第二预编码矩阵对应的码本级数可以是独立设置的。第一预编码矩阵对应的码本级数与第二预编码矩阵对应的码本级数可以不同。比如第二预编码矩阵可以对应二级码本，第一预编码矩阵可以对应一级码本。如此，公共数据流对应的波束数量更少，私有数据流对应的波束的数量更多，一方面可以节省功耗，另一方面可以增强私有数据流的指向性，使私有数据流对应的波束的能量更加集中，从而可以提高通信性能。
第一预编码矩阵和第二预编码矩阵对应的预编码资源块组可以是独立设置的。第一预编码矩阵对应的预编码资源块组与第二预编码矩阵对应的预编码资源块组可以不同。比如第一预编码矩阵对应的预编码资源块组可以大于第二预编码矩阵对应的预编码资源块组。可以看出，公共数据流对应的预编码矩阵所应用的物理资源块数量较多，如此，可以减少公共数据流所需采用的预编码矩阵的数量，从而降低第一装置侧需反馈的公共数据流对应的预编码矩阵的数量，进而降低反馈的开销。私有数据流对应的预编码矩阵所应用的物理资源块数量较少，由于不同的物理资源块对应的信道存在差异，因此可以使私有数据流所采用的预编码矩阵与私有数据流对应的信道条件更加匹配，从而提高通信性能。
一种可能的实施方式中，第一信息包括指示多个第一预编码矩阵的信息，多个第一预编码矩阵中的至少两个第一预编码矩阵不同。由于第一数据流为第一装置的公共数据流，该公共具备承载第一装置和其他装置(比如第三装置)的数据的能力，因此其他装置(比如第三装置)也可以向第二装置反馈该公共数据流对应的预编码矩阵，因此当第一装置向第二装置反馈多个第一预编码矩阵时，第二装置确定第一数据流的预编码矩阵的可选择项增多，从而可以使第二装置为第一装置和其他装置(比如第三装置)选择出更优的第一数据流的预编码矩阵。
一种可能的实施方式中，第二信息包括指示多个第二预编码矩阵的信息，多个第二预编码矩阵中的至少两个第二预编码矩阵不同。由于第一装置向第二装置反馈多个第二预编码矩阵，因此第二装置确定第二数据流的预编码矩阵的可选择项增多，从而可以使第二装置为第二数据流选择出更优的预编码矩阵。
一种可能的实施方式中，第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，第 二预编码矩阵为第二预编码矩阵集合中的预编码矩阵。第一预编码矩阵集合为第二预编码矩阵集合的子集。由于第一预编码矩阵集合为第二预编码矩阵集合的子集，因此可以减少需定义的预编码矩阵的集合的数量，从而减少信令开销，也减少预编码矩阵占用的存储空间。
一种可能的实施方式中，第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵。第一预编码矩阵集合中的包括的预编码矩阵的数量与第二预编码矩阵集合中包括的预编码矩阵的数量不同或者相同。如此，可以提高方案的灵活性。
一种可能的实施方式中，第一装置接收第一触发信息，第一触发信息触发第一装置反馈第一数据流的候选预编码矩阵的信息。第一装置基于第一触发信息向第二装置发送第一信息。如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的公共数据流的候选预编码矩阵的情况下，向第一装置发送第一触发信息以触发第一装置反馈第一装置的公共数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的公共数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
一种可能的实施方式中，第一装置接收第二触发信息，第二触发信息触发第一装置反馈第二数据流的候选预编码矩阵的信息。第一装置基于第二触发信息向第二装置发送第二信息。如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的私有数据流的候选预编码矩阵的情况下，向第一装置发送第二触发信息以触发第一装置反馈第一装置的私有数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的私有数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
一种可能的实施方式中，第一装置以第一时长为周期，周期性发送指示第一数据流的候选预编码矩阵的信息。本申请实施例中第一装置周期性发送指示第一数据流的候选预编码矩阵的信息的情况下，第一装置反馈的其中一个指示第一数据流的候选预编码矩阵的信息可以为上述第一信息，也可以理解为上述第一信息为第一装置在一个周期中发送的指示第一数据流的候选预编码矩阵的信息。第一装置可以周期性的反馈第一装置的公共数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的公共数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。一种可能的实施方式中，第一装置反馈第一装置的公共数据流的候选预编码矩阵的信息的频率可以较低。这种情况下，可以降低反馈带来的开销。
一种可能的实施方式中，第一装置以第二时长为周期，周期性发送指示第二数据流的候选预编码矩阵的信息。本申请实施例中第一装置周期性发送指示第二数据流的候选预编码矩阵的信息的情况下，第一装置反馈的其中一个指示第二数据流的候选预编码矩阵的信息可以为上述第二信息，也可以理解为上述第二信息为第一装置在一个周期中发送的指示第二数据流的候选预编码矩阵的信息。第一装置可以周期性的反馈第一装置的私有数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的私有数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。
第二方面，本申请实施例提供一种通信方法，该通信方法可以由第二装置执行。本申请涉及到的第二装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。
该方法中，第二装置接收来自第一装置的第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。第二装置接收来自第一装置的第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
通过上述内容可以看出，由于第一数据流和第二数据流的时域资源有交集，且第一装置基于第二装置的参考信号可以分别反馈两个预编码矩阵，且该两个预编码矩阵分别用于对第一数据流和第二数据流进行预编码，因此可以使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案。又由于本申请使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案，因此第一装置和第二装置可以基于第一数据流和第二数据流进行通信，继而可以提高系统容量。
一种可能的实施方式中，第一信息还包括第一预编码矩阵对应的调制与编码策略和/或第一预编码矩阵对应的秩指示信息。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第二信息还包括第二预编码矩阵对应的调制与编码策略和/或第二预编码矩阵对应的秩指示信息。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一预编码矩阵对应的带宽与第二预编码矩阵对应的带宽不同。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一预编码矩阵对应的码本级数与第二预编码矩阵对应的码本级数不同。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一预编码矩阵对应的预编码资源块组与第二预编码矩阵对应的预编码资源块组的数量不同。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一信息包括指示多个第一预编码矩阵的信息，多个第一预编码矩阵中的至少两个第一预编码矩阵不同；
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第二信息包括指示多个第二预编码矩阵的信息，多个第二预编码矩阵中的至少两个第二预编码矩阵不同。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，第 二预编码矩阵为第二预编码矩阵集合中的预编码矩阵。第一预编码矩阵集合为第二预编码矩阵集合的子集。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵。第一预编码矩阵集合中的包括的预编码矩阵的数量与第二预编码矩阵集合中包括的预编码矩阵的数量不同。
相关介绍以及有益效果参见前述第一方面以及第一方面的可能的实施方式中的相关描述，在此不再赘述。
一种可能的实施方式中，第二装置接收来自第一装置的第一信息之前，还包括：第二装置向第一装置发送第一触发信息，第一触发信息触发第一装置反馈第一数据流的候选预编码矩阵的信息。如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的公共数据流的候选预编码矩阵的情况下，向第一装置发送第一触发信息以触发第一装置反馈第一装置的公共数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的公共数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
一种可能的实施方式中，第二装置接收来自第一装置的第二信息之前，还包括：第二装置向第一装置发送第二触发信息，第二触发信息触发第一装置反馈第二数据流的候选预编码矩阵的信息。
如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的私有数据流的候选预编码矩阵的情况下，向第一装置发送第二触发信息以触发第一装置反馈第一装置的私有数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的私有数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
一种可能的实施方式中，第二装置以第一时长为周期，周期性接收指示第一数据流的候选预编码矩阵的信息。本申请实施例中第二装置周期性接收指示第一数据流的候选预编码矩阵的信息的情况下，第二装置接收的其中一个指示第一数据流的候选预编码矩阵的信息可以为上述第一信息，也可以理解为上述第一信息为第二装置在一个周期中接收的指示第一数据流的候选预编码矩阵的信息。也就是说，第一装置可以周期性的反馈第一装置的公共数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的公共数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。一种可能的实施方式中，第一装置反馈第一装置的公共数据流的候选预编码矩阵的信息的频率可以较低。这种情况下，可以降低反馈带来的开销。
一种可能的实施方式中，第二装置以第二时长为周期，周期性接收指示第二数据流的候选预编码矩阵的信息。本申请实施例中第二装置周期性接收指示第二数据流的候选预编码矩阵的信息的情况下，第二装置接收的其中一个指示第二数据流的候选预编码矩阵的信息可以为上述第二信息，也可以理解为上述第二信息为第二装置在一个周期中接收的指示第二数据流的候选预编码矩阵的信息。也就是说，第一装置可以周期性的反馈第一装置的私有数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的私有数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。
第三方面，本申请实施例提供一种通信方法，该通信方法可以由第一装置执行。本申 请涉及到的第一装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。
该方法中，第一装置接收来自第二装置的第三信息，第一装置基于第三信息接收来自第二装置的第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。其中，第三信息包括以下内容中的至少一项：指示第一数据流占用的时频资源的信息；指示第一数据流的调制编码方式的信息；指示第一装置的数据在第一数据流中所处的位置的位置指示信息；或，第一数据流对应的解调参考信号(demodulation reference signal，DMRS)端口。
举个例子，第一数据流具有承载多个装置(比如第一装置和其他装置)的数据的能力，第二数据流可以为第一装置的数据，又由于第一数据流和第二数据流的时域资源有交集，第一装置的数据可以通过两条数据流进行发送，该通过多条数据流发送一个装置的数据的通信方案可以提高系统容量。可以看出，本申请实施例提供的方案可以使能分别基于第一数据流和第二数据流与第一装置进行通信的方案，继而可以提高系统容量。
进一步，由于第一数据流具有承载多个装置(比如第一装置和其他装置)的数据的能力，而本申请实施例中可以通过第三信息指示出第一数据流的相关信息，因此第一装置可以从接收到的信号中较为快速的获取到第一数据流，也可以较为快速的从第一数据流中获取到第一装置的相关信息，继而提高第一装置和第二装置基于第一数据流和第二数据流进行通信的通信效率。
一种可能的实施方式中，第一数据流为公共数据流。可以看出，本申请实施例中第二装置可以将公共数据流的相关信息通过第三信息指示给第一装置，从而第一装置可以基于第三信息更高效更简便的获取到公共数据流。又由于公共数据流具有承载多个装置的数据的能力，因此第二装置还可以通过第三信息将公共数据流中第一装置的数据的具体位置指示给第一装置，从而第一装置可以基于第三信息更高效更简便的获取到公共数据流中承载的第一装置的信息。
一种可能的实施方式中，第一数据流包括第一装置的数据，位置指示信息包括：第一装置的数据对应的逻辑比特组的组标识信息。其中，逻辑比特组包括一个或多个连续的逻辑比特，逻辑比特组与一个物理比特、连续多个物理比特或不连续多个物理比特具有映射关系。如此，可以降低第二装置的位置指示信息占用的比特位的数量，从而降低开销。
一种可能的实施方式中，一个逻辑比特与一个或多个物理比特具有映射关系。从而可以提高方案的灵活性。
一种可能的实施方式中，第三信息还包括：指示第一数据流的数据对应的码字映射的层的标识信息。如此，第一装置可以根据第一数据流对应的层的标识信息解析第一数据流，从而可以降低第一装置解析第一数据流的难度。
一种可能的实施方式中，第一数据流的数据对应一个或多个码字。一种可能的实施方式中，第一数据流的数据对应的一个或多个码字中的一个码字映射至一层或多层。如此可以提高方案的灵活性。
一种可能的实施方式中，第二数据流的数据对应一个或多个码字。一种可能的实施方式中，第二数据流的一个或多个码字中的一个码字映射至一层或多层。如此可以提高方案的灵活性。
一种可能的实施方式中，第一数据流的数据对应的码字与第二数据流的数据对应的码 字不同；如此可以降低第一装置解析数据的难度。一种可能的实施方式中，第一数据流的数据对应的码字映射的层与第二数据流的数据对应的码字映射的层不同。如此可以降低第一装置解析数据的难度。
一种可能的实施方式中，第一装置接收来自第二装置的第四信息。其中，第四信息包括以下内容中的至少一项：指示第二数据流占用的时频资源的信息；指示第二数据流的调制编码方式的信息；指示第二数据流对应的DMRS端口的信息；或，指示第二数据流中第一装置的数据对应的码字映射的层的标识信息。一种可能的实施方式中，第二数据流为第一装置的私有数据流。在第一装置接收到第四信息的情况下，第一装置可以根据第四信息确定出第二数据流的相关信息，继而可以从接收到的数据中获取到第二数据流中的信息。
一种可能的实施方式中，第一装置接收来自第二装置的指示第一数据流包括有第一装置的数据的信息。第一装置基于指示第一数据流包括有第一装置的数据，从第一数据流中获取第一装置的数据。如此，若第一装置确定第一数据流中未包括第一装置的数据，则无需尝试从第一数据流中获取第一装置的数据，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示第一数据流包括有第一装置的数据的信息承载于下行控制信息(downlink control information，DCI)，如此，可以减少信令开销，与现有技术更加兼容。
一种可能的实施方式中，第一装置接收第一DCI，第一装置在确定第一DCI采用第一无线网络临时标识(radio network temporary identity，RNTI)加扰的情况下，确定第一数据流包括有第一装置的数据。通过该实施方式可以隐式的指示第一数据流是否包括有第一装置的数据，从而可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第一装置接收第一DCI，第一装置在确定第一DCI采用第二RNTI加扰的情况下，确定第一数据流未包括第一装置的数据。
通过该实施方式可以隐式的指示第一数据流是否包括有第一装置的数据，从而可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第一装置基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。第一装置接收来自第二装置的指示目标数据流包括有第二数据流的信息，第二数据流为第一装置的数据流，第一装置基于指示目标数据流包括有第二数据流的信息，从目标数据流中获取第二数据流中的数据。第一装置确定目标数据流中未包括第二数据流，继而无需尝试从目标数据流中获取第一装置的私有数据流，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示目标数据流包括有第二数据流的信息承载于DCI，如此，可以减少信令开销，与现有技术更加兼容。
一种可能的实施方式中，第一装置基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。第一装置接收第二DCI，第一装置在确定第二DCI采用第三RNTI加扰的情况下，确定目标数据流包括有第二数据流的信息。如此，可以通过隐式的方式确定出目标数据流是否包括有第二数据流，通过该实施方式可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第一装置基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。第一装置在确定第二DCI采用第四RNTI加扰的情况下，确定 目标数据流未包括有第二数据流的信息。
如此，可以通过隐式的方式确定出目标数据流是否包括有第二数据流，通过该实施方式可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第三信息承载于第一装置的指定DCI，和/或，组DCI，如此，无需新设一条信令用于承载第三信息，从而可以减少信令开销，与现有技术更加兼容。
第四方面，本申请实施例提供一种通信方法，该通信方法可以由第二装置执行。本申请涉及到的第二装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。
该方法中，第二装置向第一装置发送第三信息，第二装置向第一装置发送第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。其中，第三信息包括以下内容中的至少一项：指示第一数据流占用的时频资源的信息；指示第一数据流的调制编码方式的信息；指示第一装置的数据在第一数据流中所处的位置的位置指示信息；或，第一数据流对应的DMRS端口。
举个例子，第一数据流具有承载多个装置(比如第一装置和其他装置)的数据的能力，第二数据流可以为第一装置的数据，又由于第一数据流和第二数据流的时域资源有交集，第一装置的数据可以通过两条数据流进行发送，该通过多条数据流发送一个装置的数据的通信方案可以提高系统容量。可以看出，本申请实施例提供的方案可以使能分别基于第一数据流和第二数据流与第一装置进行通信的方案，继而可以提高系统容量。
进一步，由于第一数据流具有承载多个装置(比如第一装置和其他装置)的数据的能力，而本申请实施例中可以通过第三信息指示出第一数据流的相关信息，因此第一装置可以从接收到的信号中较为快速的获取到第一数据流，也可以较为快速的从第一数据流中获取到第一装置的相关信息，继而提高第一装置和第二装置基于第一数据流和第二数据流进行通信的通信效率。
一种可能的实施方式中，第一数据流为公共数据流。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第一数据流包括第一装置的数据，位置指示信息包括：第一装置的数据对应的逻辑比特组的组标识信息。其中，逻辑比特组包括一个或多个连续的逻辑比特，逻辑比特组与一个物理比特、连续多个物理比特或不连续多个物理比特具有映射关系。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，一个逻辑比特与一个或多个物理比特具有映射关系。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第三信息还包括指示第一数据流的数据对应的码字映射的层的标识信息。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第一数据流的数据对应一个或多个码字；和/或，第一数据流的数据对应的一个或多个码字中的一个码字映射至一层或多层。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第二数据流的数据对应一个或多个码字，和/或，第二数据流 的一个或多个码字中的一个码字映射至一层或多层。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第一数据流的数据对应的码字与第二数据流的数据对应的码字不同。一种可能的实施方式中，第一数据流的数据对应的码字映射的层与第二数据流的数据对应的码字映射的层不同。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第二装置向第一装置发送第四信息。其中，第四信息包括以下内容中的至少一项：指示第二数据流占用的时频资源的信息；指示第二数据流的调制编码方式的信息；指示第二数据流对应的DMRS端口的信息；或，指示第二数据流中第一装置的数据对应的码字映射的层的标识信息。
在第一装置接收到第四信息的情况下，第一装置可以根据第四信息确定出第二数据流的相关信息，继而可以从接收到的数据中获取到第二数据流中的信息。
一种可能的实施方式中，第二装置向第一装置发送指示第一数据流包括有第一装置的数据的信息。如此，若第一装置确定第一数据流中未包括第一装置的数据，则无需尝试从第一数据流中获取第一装置的数据，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示第一数据流包括有第一装置的数据的信息承载于DCI。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第二装置向第一装置发送第一DCI，第一DCI采用第一RNTI加扰，第一RNTI指示第一数据流包括有第一装置的数据。
通过该实施方式可以隐式的指示第一数据流是否包括有第一装置的数据，从而可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第二装置向第一装置发送第一DCI，第一DCI采用第二RNTI加扰，第二RNTI指示第一数据流未包括有第一装置的数据。
通过该实施方式可以隐式的指示第一数据流是否包括有第一装置的数据，从而可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第二装置向第一装置发送目标数据流，目标数据流包括第一数据流。第二装置向第一装置发送指示目标数据流包括有第二数据流的信息，第二数据流为第一装置的数据流。
第一装置确定目标数据流中未包括第二数据流，继而无需尝试从目标数据流中获取第一装置的私有数据流，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示目标数据流包括有第二数据流的信息承载于DCI。相关内容和有益效果参见前述第三方面的内容以及第三方面的可能的实施方式，在此不再赘述。
一种可能的实施方式中，第二装置向第一装置发送目标数据流，目标数据流包括第一数据流。第二装置向第一装置发送第二DCI，第二DCI采用第三RNTI加扰，第三RNTI指示目标数据流包括有第二数据流的信息。
如此，可以通过隐式的方式确定出目标数据流是否包括有第二数据流，通过该实施方式可以节省第二装置发送的信息量，进而提高数据传输效率。
一种可能的实施方式中，第二装置向第一装置发送目标数据流，目标数据流包括第一 数据流。第二装置向第一装置发送第二DCI，第二DCI采用第四RNTI加扰，第四RNTI指示目标数据流未包括有第二数据流的信息。
如此，可以通过隐式的方式确定出目标数据流是否包括有第二数据流，通过该实施方式可以节省第二装置发送的信息量，进而提高数据传输效率。
第五方面，提供了一种通信装置，该通信装置可以为前述第一装置或第二装置。该通信装置可以包括通信单元和处理单元，以执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。通信单元用于执行与发送和接收相关的功能。可选地，通信单元包括接收单元和发送单元。在一种设计中，通信装置为芯片(系统)，处理单元可以是一个或多个处理器或处理器核心，通信单元可以为通信芯片的输入输出电路或者端口。
在另一种设计中，通信装置为终端设备或网络设备，通信单元可以为发射器和接收器，或者通信单元为发射机和接收机。
可选的，通信装置还包括可用于执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式的各个模块。
第六方面，提供了一种通信装置，该通信装置可以为前述第一装置或第二装置。该通信装置可以包括处理器和存储器，以执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。该存储器用于存储计算机程序或指令，该处理器用于从存储器中调用并运行该计算机程序或指令，当处理器执行存储器中的计算机程序或指令时，使得该通信装置执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。可选的，该通信装置还包括收发器。
可选的，处理器为一个或多个，存储器为一个或多个。
可选的，存储器可以与处理器集成在一起，或者存储器与处理器分离设置。
可选的，收发器中可以包括，发射机(发射器)和接收机(接收器)。
第七方面，提供了一种通信装置，该通信装置可以为前述第一装置或第二装置。该通信装置可以包括处理器，以执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。该处理器与存储器耦合。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备或网络设备时，通信接口可以是收发器，或，输入/输出接口。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在又一种实现方式中，当该通信装置为芯片(系统)时，通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。处理器也可以体现为处理电路或逻辑电路。
第八方面，提供了一种系统，系统包括上述一个或多个第一装置。一种可能的实现方式中，该系统还可以包括一个或多个第二装置。
第九方面，提供了一种计算机程序产品，计算机程序产品包括：计算机程序(也可以 称为代码，或指令)，当计算机程序被运行时，使得计算机执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。
第十方面，提供了一种计算机可读存储介质，计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。
第十一方面，提供了一种芯片系统，该芯片系统可以包括处理器。该处理器与存储器耦合，可用于执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。可选地，该芯片系统还包括所述存储器。存储器，用于存储计算机程序(也可以称为代码，或指令)。处理器，用于从存储器调用并运行计算机程序，使得安装有芯片系统的设备执行上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式。
第十二方面，提供了一种处理装置，包括：接口电路和处理电路。接口电路可以包括输入电路和输出电路。处理电路用于通过输入电路接收信号，并通过输出电路发射信号，使得上述第一方面至第四方面中的任一方面，或执行第一方面至第四方面的任一种可能的实施方式被实现。
在具体实现过程中，上述处理装置可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请对处理器及各种电路的具体实现方式不做限定。
在一种实现方式中，当处理装置是终端设备或网络设备。接口电路可以为终端设备或网络设备中的射频处理芯片，处理电路可以为终端设备或网络设备中的基带处理芯片。
在又一种实现方式中，处理装置可以是终端设备或网络设备中的部分器件，如系统芯片(系统)或通信芯片(系统)等集成电路产品。接口电路可以为该芯片(系统)上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。处理电路可以为该芯片(系统)上的逻辑电路。
附图说明
图1为本申请实施例适用的一种系统架构的可能的示意图；
图2为本申请实施例适用的基于速率分割(rate splitting，RS)的数据传输原理的一种可能的示意图；
图3为本申请实施例提供的一种通信方法的可能的流程示意图；
图4为本申请实施例提供的一种通信方法的可能的流程示意图；
图5为本申请实施例提供的一种可能的逻辑比特和物理比特的映射关系示意图；
图6为本申请实施例提供的一种码字到层的映射示例；
图7为本申请实施例提供的又一种码字到层的映射示例；
图8为本申请实施例提供的一种通信装置的可能的结构示意图；
图9为本申请实施例提供的又一种通信装置的可能的结构示意图；
图10为本申请实施例提供的又一种通信装置的可能的结构示意图。
具体实施方式
本申请实施例的技术方案可以应用于各种通信系统。例如，第五代移动网络(the 5th generation，5G)系统、NR系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、5G网络之后的移动通信系统(例如，第六代移动网络(the 6th generation，6G)移动通信系统)、车联网(vehicle to everything，V2X)通信系统等。
图1示例性示出了本申请实施例适用的一种系统架构的可能的示意图，如图1所示，该系统包括网络设备和终端设备，网络设备可以分别与多个终端设备进行上行传输和下行传输。上行传输的传输方向是指从终端设备传输至网络设备的传输方向，下行传输是指网络设备传输至终端设备的传输方向。
本申请提供的方案适用于多个设备之间的通信，比如可以为网络设备与一个或多个终端设备之间的通信，或者为终端设备与一个或多个终端设备之间的通信，再或者为网络设备与一个或多个网络设备之间的通信。本申请涉及到的第一装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。本申请涉及到的第二装置可以为终端设备或网络设备，或为终端设备或网络设备内部的模块、单元或芯片(系统)。本申请实施例中第一装置和第二装置可以分别为终端设备和网络设备，或者分别为终端设备内部的芯片(系统)和网络设备内部的芯片(系统)，也可以均为终端设备或终端设备内部的单元模块或芯片(系统)，也可以均为网络设备或网络设备内部的单元模块或芯片(系统)。
为了便于理解本申请，下面结合附图对本申请实施例涉及到的名词和术语进行介绍。
(1)终端设备。
终端设备，也可以称为终端、终端装置。终端设备包括向用户提供数据连通性的设备，具体的，包括向用户提供数据连通性的设备，或包括向用户提供数据连通性的设备。例如可以包括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处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换数据，或与RAN交互数据。该终端设备可以包括UE、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、V2X终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备。终端设备还可以是工业自动化场景中的监控设备、机器和传感器等，或者，终端设备可以是家庭和生活场景中的手机、穿戴式设备、智能家电和车载终端等。本申请实施例中，终端设备之间还可以支持直接通信(PC5)接口通信，即支持通过侧行链路进行传输。
作为示例而非限定，在本申请实施例中，该终端设备可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使 用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载设备，车载设备例如也称为车载单元(onboard unit，OBU)。
本申请实施例中，终端设备还可以包括中继(relay)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
(2)网络设备。
网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与终端装置通信的设备，或者例如，网络设备为路侧单元(road side unit，RSU)。RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息。网络设备还可以包括码分多址接入(code division multiple access，CDMA)系统中的基站、长期演进(long Term evolution，LTE)系统中的基站、第五代移动通信技术(the 5th generation，5G)新空口(new radio，NR)系统(也简称为NR系统)中的下一代节点B(next generation node B，gNB)，或者也可以包括云接入网(cloud radio access network，Cloud RAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)等，本申请实施例并不限定。
因为本申请实施例主要涉及接入网设备，因此在下文中，如无特殊说明，则的网络设备均是指接入网设备。
(3)数据流(data flow)和流数。
本申请实施例中涉及的数据流为一组有序、有起点和终点的字节的数据序列，即可以用于传输数据的对象。本申请中的数据流的类型可以包括业务数据、信号流等，本申请对该数据流的类型不做具体限定。另外，数据流按照方向可划分上行数据流和下行数据流，其中，上行数据流通常指终端设备向RAN设备发送的数据流，下行数据流通常指RAN设备向终端设备发送的数据流。
流数(也称为数据流数或空间流数)为空分复用的传输层数，也就是MIMO信道转移矩阵奇异值分解(singular value decomposition，SVD)后中间的对角矩阵的对角元素(奇异值)个数，专业点的说法叫做秩(rank)，即终端通过CSI上报给网络的那个秩。NR协议中定义单用户下行最多支持8流，上行最多支持4流。
(4)基于RS的通信方式。
在实际应用中，为了提升下行传输资源的利用率，网络设备可将多个终端设备复用在相同的资源上进行下行发送。本申请实施例适用的一种下行传输方式比如为基于RS的多用户多流叠加的传输方式。图2示例性示出了基于RS的数据传输原理的一种可能的示意图，结合图2对基于RS的数据传输原理进行介绍。
(4.1)基于RS的数据发送原理介绍。
如图2所示，网络设备(图2中的发送端)可将UE1的数据分割为W 1 1和W 1 12两部分，分别编码到数据流s 1和数据流s 12中。网络设备将UE2的数据分割为W 2 2和W 2 12两部分，分别编码到数据流s 2和数据流s 12中。数据流s 1对应信道h1，数据流s 2对应信道h2，数据流s 12对应信道h3。网络设备通过时频资源1、时频资源2和时频资源3分别发送数据流s 1对应的信道h1、数据流s 2对应的信道h2和数据流s 12对应的信道h3。其中时频资源1的时域资源与时频资源3的时域资源有交集，时频资源2的时域资源与时频资源3的时域资源有交集。为了容易理解，该示例中以时频资源1、时频资源2和时频资源3中的时域资 源相同，且频域资源相同为例进行介绍。数据流s 12包括UE1的数据和UE2的数据。UE1和UE2均需解调数据流s 12，数据流s 1只携带UE1的数据，因此数据流s 1只需要由UE1解调，数据流s 2只携带UE2的数据因此数据流s 2只需要由UE2解调。
(4.2)基于RS的数据接收原理介绍。
结合图2，以UE1为例对UE端(图2中的接收端)解调数据的过程进行说明。UE1可先根据数据流s 12对应的解调信息解调该UE1在该时频资源3接收的信号，获得数据流s 12中UE1的数据(如图所示
Figure PCTCN2022124415-appb-000001
)，之后，根据数据流s 12中UE1的数据对该时频资源1上接收的信号进行串行干扰消除(successive interference cancellation，SIC)，再根据数据流s 1对应的解调信息对经过SIC的信号进行解调，以获得数据流s 1中的数据，记为
Figure PCTCN2022124415-appb-000002
从而获得UE1的完整的数据。
其中，SIC的步骤例如包括：UE1先将
Figure PCTCN2022124415-appb-000003
中UE1的数据解调出来，再将数据流s 12中UE1的数据根据数据流s 12对应的信道h4恢复为信号，将该时频资源1接收的信号减去该恢复出的信号，即将该恢复出的信号作为干扰从该时频资源1接收的信号中进行干扰消除，获得经过SIC的信号。UE2的操作可参照UE1的操作执行。
基于RS的数据传输有很多的优势，比如网络设备可根据不同信道条件调节速率分割中私有流与公共流的数据比例，以获得更接近信道容量的性能，提升系统容量，提高资源利用率，在高信噪比区间获得合速率(sum rata)增益，在信道变化较快时使系统更鲁棒。
(5)公共数据流和私有数据流。
(5.1)公共数据流。
公共数据流是指具有承载多个用户的数据的能力的数据流。公共数据流可以简称公共流。公共数据流具有承载多个用户的数据的能力，但是实际应用中，公共数据流可以承载多个用户的数据流，也可以只承载有一个用户的数据流。
比如上述图2所示的示例中，数据流s 12可以称为公共数据流，或者称为UE1对应的公共数据流，或者称为UE2对应的公共数据流，或者称为UE1和UE2对应的公共数据流。
(5.2)私有数据流。
私有数据流是指具有承载一个用户的数据的能力的数据流。私有数据流可以简称私有流。
比如上述图2所示的示例中，将数据流s 1可以称为UE1的私有数据流，数据流s 2可以称为UE2的私有数据流。
本申请实施例中第二装置向第一装置发送的第一装置对应的公共数据流是指具有承载第一装置的数据的能力的公共数据流，该公共数据流可能承载有第一装置的数据，也可能并未承载第一装置的数据。
本申请实施例中第二装置向第一装置发送的第一装置对应的私有数据流是指承载第一装置的数据的数据流。
第一装置对应的公共数据流和第一装置对应的私有数据流的时域资源有交集，比如第一装置对应的公共数据流的时域资源与第一装置对应的私有数据流的时域资源的交集可以包括一个或多个时间单元。
时间单元为用于信号传输的时域单元，可包括无线帧(radio frame)、子帧(subframe)、时隙(slot)、微时隙(mini-slot)或至少一个正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号等时域单位。OFDM符号也可以简称为时域符号。一种可能的 时间单元关系中，一个无线帧的时域长度比如为10ms，一个无线帧可以包括10个无线子帧，一个无线子帧的时域长度为1ms。一个无线子帧可以包括一个或多个时隙，具体一个子帧包括多少个时隙与子载波间隔(Subcarrier Space，SCS)相关。对于SCS为15千赫兹的情况，一个时隙的时域长度为1ms。一个时隙包括14个符号。
第一装置对应的公共数据流和第一装置对应的私有数据流的频域资源可以有交集，也可以没有交集。举个例子，第一装置对应的公共数据流的时域资源与第一装置对应的私有数据流的时域资源的交集包括时隙m，也可以理解为在时隙m上，同时存在有第一装置对应的公共数据流对应的数据和第一装置对应的私有数据流对应的数据。其中第一装置对应的公共数据流占用第k到k+n个物理资源块；第一装置对应的私有数据流占用第p到第p+a个物理资源块。在第一装置对应的公共数据流和第一装置对应的私有数据流的频域资源有交集的情况下，第k到k+n中的部分或全部物理资源块和第p到第p+a个物理资源块中的部分或全部物理资源块为相同的物理资源块。在第一装置对应的公共数据流和第一装置对应的私有数据流的频域资源没有交集的情况下，第k到k+n中任一个资源块和第p到第p+a个物理资源块中的每个资源块均不相同。
针对一个UE的公共流和私有流，发送端如何对该两条数据流进行预编码成为亟需解决的问题。然而现有技术中并没有任何用于解决基于RS的数据传输的方案中公共流和私有流的预编码的问题。基于此，本申请实施例提供一种方案，该方案中第一装置可以向第二装置分别反馈公共流和私有流的预编码矩阵，以便第二装置分别为公共流和私有流确定预编码矩阵(公共流对应的预编码矩阵和私有流对应的预编码矩阵可能相同也可能不同)，继而分别根据确定出的两个预编码矩阵分别对公共流和私有流进行预编码。本申请实施例提供的方案可以使能分别基于两个预编码矩阵分别对公共数据流和私有数据流分别进行预编码的方案，继而第一装置和第二装置之间可以基于公共数据流和私有数据流进行通信，该通信方案可以提高系统容量。下面结合附图对本申请实施例进行进一步的介绍。
基于图1和图2所示的实施例以及其他内容，图3示例性示出了本申请实施例提供的一种通信方法的可能的流程示意图。为了方便理解，图3所示方案中以第一装置和第二装置交互为例进行介绍。
本申请实施例中，第一装置和第二装置中的任一个可以为前述图1中所示的终端设备或网络设备，或者为终端设备内部的单元模块或芯片(系统)，或者为网络设备内部的单元模块或芯片(系统)。比如，第一装置为终端设备，第二装置为网络设备；再比如，第一装置为网络设备，第二装置为终端设备；再比如第一装置和第二装置均为网络设备；再比如第一装置和第二装置均为终端设备。为了容易理解，下面以第一装置为终端设备，第二装置为网络设备为例进行介绍。
如图3所示，该方法包括：
步骤301，第一装置向第二装置发送第一信息。
相对应的，第二装置接收来自第一装置的第一信息。
第一信息包括指示第一预编码矩阵的信息。指示第一预编码矩阵的信息可以包括第一预编码矩阵的预编码矩阵指示(pre-coding matrix indicator，PMI)。第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。第二装置在为第一数据流确定预编码矩 阵的时候可以参考该第一预编码矩阵，第二装置确定的第一数据流的预编码矩阵可能是第一预编码矩阵也可能不是该第一预编码矩阵。
在步骤301中，第一装置可以接收来自第二装置的参考信号(又可称为导频信号)，第一装置基于该参考信号进行信道估计，继而第一装置根据信道估计结果得到第一装置和第二装置之间的信道状态信息，该信道状态信息可以包括指示第一预编码矩阵的信息。
本申请实施例中第一数据流可以为第一装置对应的公共数据流，也可以为第一装置的私有数据流。后续内容为了便于理解，以第一数据流为第一装置对应的公共数据流为例进行介绍。
第一数据流具备承载第一装置和其他装置(比如第三装置)的数据的能力。比如第一数据流也具有承载第三装置的数据的能力，第一数据流也可以称为第三装置的公共数据流。第三装置可以为前述图1中的终端设备或网络设备，或者为终端设备内部的单元模块或芯片(系统)，或者为网络设备内部的单元模块或芯片(系统)，为了便于理解下述内容以第三装置为终端设备为例进行介绍。
一种可能的实施方式中，第一信息包括指示多个第一预编码矩阵的信息，多个第一预编码矩阵中的至少两个第一预编码矩阵不同。本申请实施例中第一装置可以通过第一信息反馈一个或多个第一数据流的候选预编码矩阵，为了便于理解，本申请实施例中将第一装置通过第一信息反馈的一个或多个第一数据流的候选预编码矩阵统称为第一预编码矩阵，为了便于介绍，本申请实施例中以第一装置通过第一信息反馈的一个第一数据流的候选预编码矩阵(即一个第一预编码矩阵)为例进行介绍。本申请实施例中第一装置通过第一信息反馈的第一预编码矩阵的数量可以是预设的，也可以是由其他装置(比如第二装置)配置的。
由于第一数据流为第一装置的公共数据流，该公共数据流具备承载第一装置和其他装置(比如第三装置)的数据的能力，因此其他装置(比如第三装置)也可以向第二装置反馈该公共数据流对应的预编码矩阵，因此当第一装置向第二装置反馈多个第一预编码矩阵时，第二装置确定第一数据流的预编码矩阵的可选择项增多，从而可以使第二装置为第一装置和其他装置(比如第三装置)选择出更优的第一数据流的预编码矩阵。
一种可能的实施方式中，可以预设第一预编码矩阵集合，第一预编码矩阵集合包括一个或多个预编码矩阵，本申请实施例中的第一预编码矩阵为该第一预编码矩阵集合中的预编码矩阵。一种可能的实施方式中，在上述步骤301中，第一装置可以将第一预编码矩阵集合中的全部预编码矩阵反馈给第二装置，如此，可以给第二装置提供更多的可选择项，从而可以使第二装置为第一装置和其他装置(比如第三装置)选择出更优的第一数据流的预编码矩阵。
比如第二装置可以选择第一装置和其他装置(比如第三装置)反馈的一个相同的公共数据流的候选预编码矩阵作为第一数据流的预编码矩阵。再比如，第一装置可以选择第一装置和其他装置(比如第三装置)中任意装置反馈的一个候选预编码矩阵作为第一数据流的预编码矩阵。再比如，第一装置可以根据第一装置和其他装置(比如第三装置)反馈的候选预编码矩阵确定出一个新的候选预编码矩阵作为第一数据流的预编码矩阵。举个例子，第一装置反馈公共数据流的候选预编码矩阵P1，第三装置反馈公共数据流的候选预编码矩阵P2，第二装置可一个根据候选预编码矩阵和候选预编码矩阵确定出候选预编码矩阵P3，并将候选预编码矩阵P3(比如，P3＝a*P1+b*P2，*表示乘号，a和b可以分别表示两个系 数，a和b可以相同也可以不同)作为用于对公共数据流进行预编码的矩阵。
一种可能的实施方式中，第一信息还包括第一预编码矩阵对应的调制与编码策略(modulation and coding scheme，MCS)。如此，第二装置在为第一数据流确定预编码信息时可以参考第一信息中的MCS，从而可以使第二装置确定出更合理的预编码信息。其中，MCS包括QAM调制阶数和/或码率等信息。
一种可能的实施方式中，第一信息还包括第一预编码矩阵对应的秩指示信息。如此，第二装置在为第一数据流确定预编码信息时可以参考第一信息中的秩指示信息，从而可以使第二装置确定出更合理的预编码信息。
步骤302，第一装置向第二装置发送第二信息。
相对应的，第二装置接收来自第一装置的第二信息。
第二信息包括指示第二预编码矩阵的信息。第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵。第二装置在为第二数据流确定预编码矩阵的时候可以参考该第二预编码矩阵，第二装置确定的第二数据流的预编码矩阵可能是第二预编码矩阵也可能不是该第二预编码矩阵。
本申请实施例中第二信息与第一信息可以承载于同一个消息中，即第一装置可以通过同一个消息向第二装置反馈第一数据流的候选预编码矩阵以及第二数据流的候选预编码矩阵。本申请实施例中第二信息也可以与第一信息分别承载于两条不同的消息中，比如第一装置可以通过两条消息分别向第一装置反馈该两个信息。如此，可以提高方案的灵活性。
本申请实施例中第二数据流可以为第一装置对应的公共数据流，也可以为第一装置的私有数据流。后续内容为了便于理解，以第二数据流为第一装置的私有数据流为例进行介绍。
第一数据流和第二数据流的时域资源有交集，比如第一数据流的时域资源和第二数据流的时域资源的至少一个时域符号相同(比如至少一个时隙相同)，也可以理解为第二装置发送第一数据流和第二数据流的时间上存在部分重叠。第一数据流具有承载第一装置的数据的能力，第二数据流为第一装置的数据流。第一数据流和第二数据流的时域资源有交集也可以理解为第二装置可以在时域上将第一数据流和第二数据流进行叠加进行发送。第一数据流和第二数据流的频域资源可以有交集，也可以没有交集。
下面列举几种可能的示例，比如第一数据流和第二数据流的时域资源相同，即第一数据流和第二数据流的时域资源完全重叠。再比如，第一数据流和第二数据流的时域资源部分相同(即不完全相同)，即第一数据流和第二数据流的时域资源部分重叠。再比如第一数据流和第二数据流的时域资源有交集，且第一数据流和第二数据流的频域资源相同，即第一数据流和第二数据流的频域资源完全重叠。再比如，第一数据流和第二数据流的时域资源有交集，且第一数据流和第二数据流的频域资源部分相同(即不完全相同)，即第一数据流和第二数据流的频域资源部分重叠。再比如，第一数据流和第二数据流的时域资源有交集，且第一数据流和第二数据流的频域资源完全不同，即第一数据流和第二数据流的频域资源无重叠。该几种示例指示的时域的情况和频域的情况可以自由组合，并无特定的组合关系，比如第一数据流和第二数据流的时域资源相同，第一数据流和第二数据流的频域资源可以相同、部分相同或完全不同。再比如，第一数据流和第二数据流的时域资源部分相同，第一数据流和第二数据流的频域资源可以相同、部分相同或完全不同。
一种可能的实施方式中，第二信息包括指示多个第二预编码矩阵的信息，多个第二预 编码矩阵中的至少两个第二预编码矩阵不同。本申请实施例中第一装置可以通过第二信息反馈一个或多个第二数据流的候选预编码矩阵，为了便于理解，本申请实施例中将第一装置通过第二信息反馈的一个或多个第二数据流的候选预编码矩阵统称为第二预编码矩阵，为了便于介绍，本申请实施例中以第一装置通过第二信息反馈的一个第二数据流的候选预编码矩阵(即一个第二预编码矩阵)为例进行介绍。
本申请实施例中第一装置通过第二信息反馈的第二预编码矩阵的数量可以是预设的，也可以是由其他装置(比如第二装置)配置的。第一装置通过第二信息反馈的第二预编码矩阵的数量与第一装置通过第一信息反馈的第一预编码矩阵的数量之间没有必然的关联关系，该两个数量之间可以不同，也可以相同。如此，可以提高方案的灵活性。
本申请实施例中第一装置通过第一信息反馈的第一预编码矩阵和第一装置通过第二信息反馈的第二预编码矩阵可能相同，也可能不同。当第一装置通过第一信息反馈多个第一预编码矩阵，第一装置通过第二信息反馈多个第二预编码矩阵，则第一装置反馈的多个第一预编码矩阵中的每个第一预编码矩阵可以与多个第二预编码矩阵中的每个第二预编码矩阵不同，或者，第一装置反馈的多个第一预编码矩阵中的至少一个第一预编码矩阵与多个第二预编码矩阵中的至少一个第二预编码矩阵相同。
由于第一装置向第二装置反馈多个第二预编码矩阵，因此第二装置确定第二数据流的预编码矩阵的可选择项增多，从而可以使第二装置为第二数据流选择出更优的预编码矩阵。
一种可能的实施方式中，第二信息还包括第二预编码矩阵对应的MCS。如此，第二装置在为第二数据流确定预编码信息时可以参考第二信息中的MCS，从而可以使第二装置确定出更合理的预编码信息。
一种可能的实施方式中，第二信息还包括第二预编码矩阵对应的秩指示信息。如此，第二装置在为第二数据流确定预编码信息时可以参考第二信息中的秩指示信息，从而可以使第二装置确定出更合理的预编码信息。
上述步骤301和步骤302之间没有必然的先后关系，比如也可以先执行步骤302，后执行步骤301，或者步骤302和步骤301同时执行。
一种可能的实施方式中，在步骤302之后，还可以包括步骤303和步骤304：
步骤303，第二装置根据第一信息确定第一数据流的预编码矩阵，根据第二信息确定第二数据流的预编码矩阵。
第二装置确定的第一数据流的预编码矩阵可能是第一预编码矩阵也可能不是该第一预编码矩阵。第二装置确定的第二数据流的预编码矩阵可能是第二预编码矩阵也可能不是该第二预编码矩阵。
步骤304，第二装置发送目标数据流。
相对应的，第一装置接收目标数据流。
目标数据流可以包括第一数据流。在上述步骤304中，第二装置发送的第一数据流可能承载有第一装置的数据，也可能未承载第一装置的数据。在步骤304中，第二装置发送的第一数据流可能承载有一个装置(比如第一装置或第三装置)的数据，也可能承载有多个装置(比如第一装置和第三装置)的数据。
通过上述内容可以看出，由于第一数据流和第二数据流的时域资源有交集，且第一装置基于第二装置的参考信号可以分别反馈两个预编码矩阵，且该两个预编码矩阵分别用于对第一数据流和第二数据流进行预编码，因此可以使能分别基于两个预编码矩阵对第一数 据流和第二数据流分别进行预编码的方案。又由于本申请使能分别基于两个预编码矩阵对第一数据流和第二数据流分别进行预编码的方案，因此第一装置和第二装置可以基于第一数据流和第二数据流进行通信，继而可以提高系统容量。
本申请实施例中目标数据流还包括两种可能的实施方式，实施方式A1，目标数据流包括有第二数据流。实施方式A2，目标数据流未包括第二数据流。下面分别进行介绍。
实施方式A1，目标数据流包括有第二数据流。
在实施方式A1中，第二装置需要通过第一装置的私有数据流发送第一装置的数据，由于第一数据流和第二数据流的时域资源有交集，因此第二装置发出的目标数据流中包括有第一数据流和第二数据流，或者可以理解为第二装置将第一数据流和第二数据流在时域方向叠加后进行发送。
在实施方式A1中，目标数据流还可以包括有其他装置的私有数据流，比如还可以包括有第三装置的私有数据流，第三装置的私有数据流的时域资源与第一数据流的时域资源有交集，也可以理解为，第二装置在时域方向将第一数据流、第二数据流和第三装置的私有数据流进行叠加后发送，本申请将第二装置发出的数据流称为目标数据流。
实施方式A2，目标数据流未包括第二数据流。
在实施方式A2中，第二装置可能并没有发送第一装置的私有数据流。比如目标数据流中可能包括第一装置的公共数据流(第一装置的公共数据流可能承载有第一装置的数据，也可能没有承载第一装置的数据)，再比如目标数据流中可能包括第一装置的公共数据流和第三装置的私有数据流。
若第一装置的公共数据流中包括有第一装置的数据，而目标数据流中没有包括第二数据流时，一种可能的实施方式中，第一装置可以只从公共数据流中获取第一装置的数据即可，可以不必再从接收到的信号中去尝试解析自身的私有数据流。
本申请实施例中，第一装置反馈的第一预编码矩阵和第二预编码矩阵之间的关系可以由多种实施方式，下面通过以下实施方式B1、实施方式B2、实施方式B3和实施方式B4进行介绍，下述实施方式B1、实施方式B2、实施方式B3和实施方式B4中的任意两种实施方式之间没有必然的联系，可以单独实施，也可以结合使用。
实施方式B1，第一预编码矩阵对应的带宽与第二预编码矩阵对应的带宽可以独立配置。
在实施方式B1中，第一预编码矩阵和第二预编码矩阵对应的带宽可以是独立设置的。第一预编码矩阵对应的带宽与第二预编码矩阵对应的带宽可以不同。
举个例子，NR中定义了码本模式(codebook mode)，具体包括模式1(mode1)和模式2(mode2)，其中模式1中波束为宽带模式，模式2中波束为宽带加子带模式。由于公共数据流具备承载多个用户的信息的能力，公共数据流中可能承载有多个用户信息，而私有数据流携带单个用户的信息，因此一种可能的实施方式中，可以将第一预编码矩阵对应的带宽设置为模式1，将第二预编码矩阵对应的带宽设置为模式2。如此，公共数据流对应的波束数量可以比私有数据流对应的波束数量少，也可以理解为公共数据流对应的波束的粒度更粗，私有数据流对应的波束的粒度更细，一方面可以节省功耗。另一方面私有数据流对应的波束的数量更多，且可以增强私有数据流的指向性，使私有数据流对应的波束的能量更加集中，从而可以提高通信性能。
实施方式B2，第一预编码矩阵对应的码本级数与第二预编码矩阵对应的码本级数可以独立配置。
在实施方式B2中，第一预编码矩阵和第二预编码矩阵对应的码本级数可以是独立设置的。第一预编码矩阵对应的码本级数与第二预编码矩阵对应的码本级数可以不同。
一种可能的实施方式中公共数据流对应的预编码矩阵集合中包括的预编码矩阵的数量较少，也可以理解为公共数据流对应的波束的粒度较粗，私有数据流对应的预编码矩阵集合中包括的预编码矩阵的数量较多，也可以理解为私有数据流对应的波束的粒度较细。一方面可以节省功耗。另一方面私有数据流对应的波束的数量更多，且可以增强私有数据流的指向性，使私有数据流对应的波束的能量更加集中，从而可以提高通信性能。
比如，一种可能的实施方式中，可以设置第一预编码矩阵对应的码本级数为一级码本，设置第二预编码矩阵对应的码本级数为两级码本。
举个例子，第一预编码矩阵集合为Q1，第一预编码矩阵为q1，q1为Q1的元素。第二预编码矩阵集合可以包括两个预编码矩阵集合，分别为预编码矩阵集合Q2_1和预编码矩阵集合Q2_2。预编码矩阵q2_1为预编码矩阵集合Q2_1中的一个预编码矩阵，预编码矩阵q2_2为预编码矩阵集合Q2_2中的一个预编码矩阵。第二预编码矩阵标识为q2，第二预编码矩阵对应的码本级数为两级码本，第二预编码矩阵q2可以为(q2_1*q2_2)，*可以表示为乘法。第一预编码矩阵集合Q1可以为预编码矩阵集合Q2_1或预编码矩阵集合Q2_2，或者第一预编码矩阵集合Q1可以为预编码矩阵集合Q2_1和预编码矩阵集合Q2_2。或者，第一预编码矩阵集合为Q1为预编码矩阵集合Q2_1的子集。或者，第一预编码矩阵集合为Q1为预编码矩阵集合Q2_2的子集。
实施方式B3，第一预编码矩阵对应的预编码资源块组与第二预编码矩阵对应的预编码资源块组的数量可以独立配置。
在实施方式B3中，第一预编码矩阵和第二预编码矩阵对应的预编码资源块组可以是独立设置的。第一预编码矩阵对应的预编码资源块组与第二预编码矩阵对应的预编码资源块组可以不同。
一个预编码矩阵对应的预编码资源块组可以是指一个预编码矩阵应用在多少个物理资源块(physical resource block，PRB)上，即一个预编码矩阵适用于多宽的频率范围。比如，第一预编码矩阵对应的预编码资源块组(precoding resource block group bundle，PRG bundle)为8，第二预编码矩阵对应的预编码资源块组为2。可以看出，公共数据流对应的预编码矩阵所应用的物理资源块数量较多，如此，可以减少公共数据流所需采用的预编码矩阵的数量，从而降低第一装置侧需反馈的公共数据流对应的预编码矩阵的数量，进而降低反馈的开销。私有数据流对应的预编码矩阵所应用的物理资源块数量较少，由于不同的物理资源块对应的信道存在差异，因此可以使私有数据流所采用的预编码矩阵与私有数据流对应的信道条件更加匹配，从而提高通信性能。
实施方式B4，第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵。第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵。第一预编码矩阵集合中的包括的预编码矩阵与第二预编码矩阵集合中包括的预编码矩阵可以独立配置。
在实施方式B4中，第一预编码矩阵集合中的预编码矩阵和第二预编码矩阵对应的第一预编码矩阵集合中的预编码矩阵可以是独立设置的。第一预编码矩阵集合中的包括的预编码矩阵的数量与第二预编码矩阵集合中包括的预编码矩阵的数量可以不同。
第一预编码矩阵集合中的预编码矩阵可以与第二预编码矩阵集合中的预编码矩阵不存在交集，或者存在交集。
一种可能的实施方式中，第一预编码矩阵集合为第二预编码矩阵集合的子集。比如，第二预编码矩阵集合中的预编码矩阵支持的秩为1，2，3，…，N。N为正整数。第一预编码矩阵集合中的预编码矩阵可以为第二预编码矩阵集合中支持的秩为1的预编码矩阵。或者，第一预编码矩阵集合中的预编码矩阵可以为第二预编码矩阵集合中支持的秩为1以及支持的秩为2的预编码矩阵。由于第一预编码矩阵集合为第二预编码矩阵集合的子集，因此可以减少需定义的预编码矩阵的集合的数量，从而减少信令开销，也减少预编码矩阵占用的存储空间。
上述步骤301中，第一装置发送第一信息的方式有多种，比如可以在第二装置触发的情况下发送，或者周期性发送第一数据流的候选预编码矩阵的信息，下面通过实施方式C1和实施方式C2分别进行介绍。
实施方式C1，第一装置基于第一触发信息发送第一信息。
一种可能的实施方式中，第二装置向第一装置发送第一触发信息。相对应的，第一装置接收第一触发信息。第一触发信息触发第一装置反馈第一数据流的候选预编码矩阵的信息。第一装置基于第一触发信息向第二装置发送第一信息。
如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的公共数据流的候选预编码矩阵的情况下，向第一装置发送第一触发信息以触发第一装置反馈第一装置的公共数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的公共数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
实施方式C2，第一装置周期性反馈第一装置的公共数据流的候选预编码矩阵的信息。
一种可能的实施方式中，第一装置以第一时长为周期，周期性发送指示第一数据流的候选预编码矩阵的信息。本申请实施例中第一装置周期性发送指示第一数据流的候选预编码矩阵的信息的情况下，第一装置反馈的其中一个指示第一数据流的候选预编码矩阵的信息可以为上述第一信息，也可以理解为上述第一信息为第一装置在一个周期中发送的指示第一数据流的候选预编码矩阵的信息。相对应的，第二装置以第一时长为周期，周期性接收指示第一数据流的候选预编码矩阵的信息。
本申请实施例中第一装置可以在一个周期内发送一个指示第一数据流的候选预编码矩阵的信息，该一个指示第一数据流的候选预编码矩阵的信息可以指示一个或多个候选预编码矩阵。两个指示第一数据流的候选预编码矩阵的信息分别指示出的候选预编码矩阵可能完全不同，或者完全相同，或者部分相同。
举个例子，第一装置在一个周期内发送的指示第一数据流的候选预编码矩阵的信息指示候选预编码矩阵a1和候选预编码矩阵a2，第一装置在另一个周期内发送的指示第一数据流的候选预编码矩阵的信息指示候选预编码矩阵a3。候选预编码矩阵a1和候选预编码矩阵a2均与候选预编码矩阵a3不同，或者，候选预编码矩阵a1和候选预编码矩阵a2中的一个与候选预编码矩阵a4相同。
再举个例子，第一装置在一个周期内发送的指示第一数据流的候选预编码矩阵的信息指示候选预编码矩阵a1和候选预编码矩阵a2，第一装置在另一个周期内发送的指示第一数据流的候选预编码矩阵的信息指示候选预编码矩阵a3和候选预编码矩阵a4。比如，候 选预编码矩阵a3与候选预编码矩阵a1相同，候选预编码矩阵a4和候选预编码矩阵a2相同；再比如，候选预编码矩阵a3与候选预编码矩阵a1不同，且候选预编码矩阵a4和候选预编码矩阵a2不同；再比如，候选预编码矩阵a3与候选预编码矩阵a1相同，且候选预编码矩阵a4和候选预编码矩阵a2不同；再比如，候选预编码矩阵a3与候选预编码矩阵a1不同，且候选预编码矩阵a4和候选预编码矩阵a2相同。
上述第一预编码矩阵的信息属于第一装置在一个周期内反馈的指示第一数据流的候选预编码矩阵的信息指示的一个候选预编码矩阵，第一装置在其他周期内反馈的指示第一数据流的候选预编码矩阵的信息指示的候选预编码矩阵也可以包括有第一预编码矩阵，也可以不包括第一预编码矩阵，本申请实施例不做限制。
第一装置可以周期性的反馈第一装置的公共数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的公共数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。一种可能的实施方式中，第一装置反馈第一装置的公共数据流的候选预编码矩阵的信息的频率可以较低。这种情况下，可以降低反馈带来的开销。
上述步骤302中，第一装置发送第二信息的方式有多种，比如可以在第二装置触发的情况下发送，或者周期性发送第一数据流的候选预编码矩阵的信息，下面通过实施方式D1和实施方式D2分别进行介绍。
实施方式D1，第一装置基于第二触发信息发送第二信息。
一种可能的实施方式中，第二装置向第一装置发送第二触发信息，第二触发信息触发第一装置反馈第二数据流的候选预编码矩阵的信息。相对应的，第一装置接收第二触发信息。第一装置基于第二触发信息向第二装置发送第二信息。
如此，当第二装置可以根据自身的实际需要，在确定需要第一装置反馈第一装置的私有数据流的候选预编码矩阵的情况下，向第一装置发送第二触发信息以触发第一装置反馈第一装置的私有数据流的候选预编码矩。如此，相比第一装置周期性反馈第一装置的私有数据流的候选预编码矩阵的方案，该方案可以节省信令消耗。
实施方式D2，第一装置周期性反馈第一装置的私有数据流的候选预编码矩阵的信息。
一种可能的实施方式中，第一装置以第二时长为周期，周期性发送指示第二数据流的候选预编码矩阵的信息。本申请实施例中第一装置周期性发送指示第二数据流的候选预编码矩阵的信息的情况下，第一装置反馈的其中一个指示第二数据流的候选预编码矩阵的信息可以为上述第二信息，也可以理解为上述第二信息为第一装置在一个周期中发送的指示第二数据流的候选预编码矩阵的信息。相对应的，第二装置以第二时长为周期，周期性接收指示第二数据流的候选预编码矩阵的信息。
本申请实施例中第一装置可以在一个周期内发送一个指示第二数据流的候选预编码矩阵的信息，该一个指示第二数据流的候选预编码矩阵的信息可以指示一个或多个候选预编码矩阵。两个指示第二数据流的候选预编码矩阵的信息分别指示出的候选预编码矩阵可能完全不同，或者完全相同，或者部分相同。
举个例子，第一装置在一个周期内发送的指示第二数据流的候选预编码矩阵的信息指示候选预编码矩阵b1和候选预编码矩阵b2，第一装置在另一个周期内发送的指示第二数据流的候选预编码矩阵的信息指示候选预编码矩阵b3。候选预编码矩阵b1和候选预编码矩阵b2均与候选预编码矩阵b3不同，或者，候选预编码矩阵b1和候选预编码矩阵b2中 的一个与候选预编码矩阵b4相同。
再举个例子，第一装置在一个周期内发送的指示第二数据流的候选预编码矩阵的信息指示候选预编码矩阵b1和候选预编码矩阵b2，第一装置在另一个周期内发送的指示第二数据流的候选预编码矩阵的信息指示候选预编码矩阵b3和候选预编码矩阵b4。比如，候选预编码矩阵b3与候选预编码矩阵b1相同，候选预编码矩阵b4和候选预编码矩阵b2相同；再比如，候选预编码矩阵b3与候选预编码矩阵b1不同，且候选预编码矩阵b4和候选预编码矩阵b2不同；再比如，候选预编码矩阵b3与候选预编码矩阵b1相同，且候选预编码矩阵b4和候选预编码矩阵b2不同；再比如，候选预编码矩阵b3与候选预编码矩阵b1不同，且候选预编码矩阵b4和候选预编码矩阵b2相同。
上述第二预编码矩阵的信息属于第一装置在一个周期内反馈的指示第二数据流的候选预编码矩阵的信息指示的一个候选预编码矩阵，第一装置在其他周期内反馈的指示第二数据流的候选预编码矩阵的信息指示的候选预编码矩阵也可以包括有第二预编码矩阵，也可以不包括第二预编码矩阵，本申请实施例不做限制。
第一装置可以周期性的反馈第一装置的私有数据流的候选预编码矩阵的信息，如此第二装置可以在需要为第一装置的私有数据流确定预编码矩阵的情况下，基于最新收到的候选预编码矩阵进行选择。
当第一装置也在周期反馈第一装置的公共数据流的候选预编码矩阵的信息的情况下，第一装置反馈第一装置的私有数据流的候选预编码矩阵的信息的频率可以与第一装置反馈第一装置的公共数据流的候选预编码矩阵的信息的频率不同，也可以理解为第一时长可以与第二时长不同。
一种可能的实施方式中，第一装置反馈第一装置的私有数据流的候选预编码矩阵的信息的频率可以较高。如此可以使第二装置确定出更加符合实际情况的第一装置的私有数据流的预编码矩阵。比如，第一装置反馈第一装置的私有数据流的候选预编码矩阵的信息的频率可以高于第一装置反馈第一装置的公共数据流的候选预编码矩阵的信息的频率，也可以理解为第一时长可以大于第二时长。比如，第一时长可以为10毫秒，第二时长可以为5毫秒。可以看出，该实施方式中，第一装置可以减少反馈第一装置的公共数据流的候选预编码矩阵的信息的数量，从而可以降低反馈第一装置的公共数据流的候选预编码矩阵的信息和第一装置的私有数据流的候选预编码矩阵的信息所需的开销。
第一装置可以通过上述实施方式C1或实施方式C2反馈第一装置的公共数据流的候选预编码矩阵的信息，第一装置可以通过上述实施方式D1或实施方式D2反馈第一装置的私有数据流的候选预编码矩阵的信息。比如，第一装置可以选择上述实施方式C1和上述实施方式D1，这种情况下，第一触发信息和第二触发信息可以为同一个信息，或者为两个不同的信息。当第一触发信息和第二触发信息为两个不同的信息，第一触发信息和第二触发信息可以承载于一条消息，也可以承载于两条消息。
基于图1、图2和图3所示的实施例以及其他内容，图4示例性示出了本申请实施例提供的一种通信方法的可能的流程示意图。为了方便理解，图4所示方案中以第一装置和第二装置交互为例进行介绍。第一装置和第二装置的相关说明可以参见前述图3的相关描述，不再赘述。为了容易理解，下面以第一装置为终端设备，第二装置为网络设备为例进行介绍。可以理解，图4所示的实施例和图3所示的实施例，可以结合也可以相互独立。
如图4所示，该方法包括：
步骤401，第二装置向第一装置发送第三信息。
相对应的，第一装置接收来自第二装置的第三信息。
其中，第三信息包括以下内容中的至少一项：指示第一数据流占用的时频资源的信息；指示第一数据流的调制编码方式的信息；或，第一数据流对应的DMRS端口。可选地，第三信息中还可以包括指示第一数据流所使用的预编码矩阵的信息，也可以不包括指示第一数据流所使用的预编码矩阵的信息，第一装置可以根据接收到的参考信号进行信道估计，并根据信道估计结果从接收到的信息中恢复出需要的数据。第一数据流的相关描述可以参见前图3的实施例中的相关描述，不再赘述，下面以第一数据流为第一装置的公共数据流为例进行介绍。
第一数据流可能包括有第一装置的数据，也可能未包括第一装置的数据。当第一数据流包括有第一装置的数据的情况下，第三信息还可以包括指示第一装置的数据在第一数据流中所处的位置的位置指示信息。如此，第一装置可以知晓自身的信息位于第一数据流的哪些比特，继而从公共数据流中获取到属于自身的信息。
其中，位置指示信息可以包括第一装置的数据在第一数据流中占据的比特位。一种可能的实施方式中，第一数据流中的物理比特与逻辑比特之间具有映射关系，本申请物理比特是指第一数据流中的实际的比特。物理比特与逻辑比特的映射关系可以称为虚拟映射。位置指示信息可以包括第一装置的数据在第一数据流中占据的物理比特对应的逻辑比特的标识信息。如此，可以降低第二装置的位置指示信息占用的比特位的数量，从而降低开销。
一种可能的实施方式中，逻辑比特还可以分为逻辑比特组。位置指示信息可以包括第一装置的数据对应的逻辑比特组的组标识信息。其中，逻辑比特组包括一个或多个连续的逻辑比特，逻辑比特组与一个物理比特、连续多个物理比特或不连续多个物理比特具有映射关系。一个逻辑比特与一个或多个物理比特具有映射关系。从而可以提高方案的灵活性。
图5示例性示出了一种可能的逻辑比特和物理比特的映射关系示意图，如图5所示，一个逻辑比特与一个物理比特具有虚拟映射关系，比如图5中逻辑比特0与物理比特0具有映射关系，逻辑比特1与物理比特4具有映射关系。在逻辑比特上，发送给一个用户的公有信息部分为连续映射，比如UE1的信息对应的逻辑比特为逻辑比特0至逻辑比特63，比如UE2的信息对应的逻辑比特为逻辑比特64之后的一串连续的逻辑比特。一种可能的实施方式中，逻辑比特可以先划分为逻辑比特组，比如逻辑比特0至逻辑比特63为一个逻辑比特组，逻辑比特64至逻辑比特127为一个逻辑比特组。UE1对应的位置指示信息可以为该UE1的信息对应的逻辑比特组的起点和长度信息(比如UE1的位置信息可以包括：00000000和01000000，其中00000000表示该UE1的信息的逻辑比特组的起点，该01000000表示该UE1的信息对应的逻辑比特组的长度)，或者为该逻辑比特组的起点和终点。另一种实施方式中，可以通过比特图映射的方式指示出该UE1对应那几组逻辑比特组，该UE1对应的位置指示信息可以为指示出该UE1对应的逻辑比特组的信息。
又一种可能的实施方式中，第三信息还包括指示第一数据流的数据对应的码字映射的层的标识信息。如此，第一装置可以根据第一数据流对应的层的标识信息解析第一数据流，从而可以降低第一装置解析第一数据流的难度。第一数据流的数据对应的码字和第二数据流对应的码字可以独立设置。第二数据流的数据可以对应一个或多个码字。第一数据流的 数据对应的码字与第二数据流的数据对应的码字不同。第二数据流的一个或多个码字中的一个码字可以映射至一层或多层。第一数据流的数据可以对应一个或多个码字。第一数据流的数据对应的一个或多个码字中的一个码字可以映射至一层或多层。第一数据流的数据对应的码字映射的层与第二数据流的数据对应的码字映射的层不同，如此可以降低第一装置解析数据的难度。
比如，当第一装置的公共数据流和私有数据流的码字映射到不同层的情况下，第一装置接收到的层数为第一装置的公共数据流的码字映射的层数与第一装置的私有数据流的码字映射的层数的和。一种可能的实施方式中，第一装置的公共数据流的码字映射于一层。表1示例性示出了一种码字到层的映射的示例，如图1所示，码字CCW1可以映射至层1。表1中还示出了用于指示层1中是否包括有公共信息的信息，比如表1中，预设字段“公共信息”为0，则表示层1未承载公共信息，若预设字段“公共信息”为1，则表示层1承载公共信息。
表1码字到层的映射的示例
Figure PCTCN2022124415-appb-000004
又一种可能的实施方式中，若第一装置的公共数据流的码字映射于一层，私有信息层数表格可以类似NR中的表格。下面通过图6和图7示例性示出本申请实施例提供的几种码字到层的映射示例。
如图6所示，以第一装置为UE1，第二装置为网络设备为例进行介绍。图6所示的为网络设备内部的数据处理流程，如图6所示，UE1的信息对应两个码字，分别为CW1和CW2，其中CW1为承载于UE1的私有数据流的信息对应的码字，CW2为承载于UE1的公共数据流的UE1的信息和UE2的信息对应的码字。类似的，UE2的信息对应两个码字，分别为CW3和码字CW2，其中CW3为承载于UE2的私有数据流的信息对应的码字。UE1的CW1可以映射至两层，分别为层1和层2，进而分别通过DMRS端口10001和DMRS端口10002发送。UE2的CW3可以映射至两层，分别为层1和层2，进而分别通过DMRS端口10003和DMRS端口10004发送。CW2可以映射至一层，为层3，进而通过DMRS端口10005发送。之后网络设备对UE1和UE2的公共数据流、UE1的私有数据流以及UE2的私有数据流分别编码，之后将编码后的数据流叠加并通过天线发送。该示例中可以看出，UE1的私有数据流的码字对应两层(层1和层2)，UE1的公共数据流的码字对应一层(层3)，因此，UE1的信息共对应三层，分别为层1、层2和层3。类似的，UE2的私有数据流的码字对应两层(层1和层2)，UE2的公共数据流的码字对应一层(层3)，因此，UE2的信息共对应三层，分别为层1、层2和层3。
如图7所示，以第一装置为UE1，第二装置为网络设备为例进行介绍。图7所示的为网络设备内部的数据处理流程，如图7所示，UE1的信息对应三个码字，分别为CW1、CW2和CW3，其中CW1和CW2为承载于UE1的私有数据流的信息对应的码字，CW3为承载于UE1的信息和UE2的信息的公共数据流对应的码字。类似的，UE2的信息对应两个码字，分别为CW4和码字CW3，其中CW4为承载于UE2的私有数据流的信息对应的码字。UE1的CW1可以映射至三层，分别为层1、层2和层3，进而分别通过DMRS端口10001、DMRS端口10002和DMRS端口10003发送。UE1的CW2可以映射至两层，分别为层4和层5，进而分 别通过DMRS端口10004和DMRS端口10005发送。UE2的CW4可以映射至两层，分别为层1和层2，进而分别通过DMRS端口10006和端口10007发送。CW3可以映射至一层，为层6，进而通过DMRS端口10008发送。之后网络设备对UE1和UE2的公共数据流、UE1的私有数据流以及UE2的私有数据流分别编码，之后将编码后的数据流叠加并通过天线发送。该示例中可以看出，UE1的私有数据流的码字对应五层(层1、层2、层3、层4和层5)，UE1的公共数据流的码字对应一层(层6)，因此，UE1的信息共对应六层，分别为层1、层2、层3、层4、层5和层6。类似的，UE2的私有数据流的码字对应两层(层1和层2)，UE2的公共数据流的码字对应一层(层6)，因此，UE2的信息共对应三层，分别为层1、层2和层6。
一种可能的实施方式中，第三信息可以承载于第一装置的指定DCI(UE-specific DCI)或，组DCI(group DCI)，或者第三信息承载于第一装置的指定DCI(UE-specific DCI)和组DCI(group DCI)中。本申请实施例中第一装置的公共数据流和第一装置的私有数据流占据的带宽可以不同。如此可以更加灵活的为公共数据流和私有数据流设置网络参数。
步骤402，第二装置向第一装置发送第四信息。
相对应的，第一装置接收来自第二装置的第四信息。
步骤402为可以选择的步骤，图4所示的实施例中也可以不执行步骤402。上述步骤401和步骤402之间没有必然的先后关系，比如也可以先执行步骤402，后执行步骤401，或者步骤402和步骤401同时执行。
其中，第四信息包括以下内容中的至少一项：指示第二数据流占用的时频资源的信息；指示第二数据流的调制编码方式的信息；指示第二数据流对应的DMRS端口的信息；或，指示第二数据流中第一装置的数据对应的码字映射的层的标识信息。
第二数据流的相关描述可以参见前图3的实施例中的相关描述，不再赘述，下面以第二数据流为第一装置的私有数据流为例进行介绍。
步骤403，第二装置发送目标数据流。
相对应的，第一装置接收目标数据流。
目标数据流包括第一数据流，也可以理解为第一装置基于第三信息接收目标数据流中的第一数据流。在第一装置接收到第三信息的情况下，第一装置可以根据第三信息确定出第一数据流的相关信息，继而可以从接收到的数据中获取到第一数据流中的第一装置的相关信息。
目标数据流也可以包括第二数据流也可以不包括第二数据流。目标数据流的相关描述可以参见前图3的实施例中的目标数据流的相关描述，不再赘述。第一数据流和第二数据流的时域资源有交集，第一数据流和第二数据流的关系可以参见前图3的实施例中的相关描述，不再赘述。
当目标数据流包括有第二数据流的情况下，也可以理解为，第一装置基于第三信息接收来自第二装置的第一数据流和第二数据流。在第一装置接收到第四信息的情况下，第一装置可以根据第四信息确定出第二数据流的相关信息，继而可以从接收到的数据中获取到第二数据流中的信息。
图4所示的实施例可以和前述图3所示的实施例结合使用，也可以单独实施。当图4所示的实施例与前述图3所示的实施例结合使用时，上述步骤401可以在上述步骤301之 后，在步骤303之前执行，上述步骤402可以在上述步骤302之后在步骤303之前执行。步骤403可以为前述步骤303。
在上述步骤403中，第二装置发送的第一装置发送的目标数据流中包括的第一数据流具有承载第一装置的信息的能力，第一数据流中可能承载有第一装置的信息，也可能并未承载第一装置的信息。一种可能的实施方式中，第二装置可以向第一装置指示出第一数据流中是否承载有第一装置的信息。比如第二装置可以通过指示信息或不通过指示信息而是通过其他方式指示出第一数据流中是否承载有第一装置的信息，下面分别通过如下实施方式E1和实施方式E2进行介绍。
实施方式E1，第二装置通过指示信息指示第一数据流中是否承载有第一装置的信息。
在实施方式E1中，一种可能的实施方式中，第二装置向第一装置发送指示第一数据流包括有第一装置的数据的信息。相对应的，第一装置接收来自第二装置的指示第一数据流包括有第一装置的数据的信息。第一装置基于指示第一数据流包括有第一装置的数据，从第一数据流中获取第一装置的数据。一种可能的实施方式中，指示第一数据流包括有第一装置的数据的信息承载于DCI，比如可以承载于DCI中的预设第一字段，指示第一数据流包括有第一装置的数据的信息可以为该预设的第一字段的第一预设值，如此，无需新设一条信令用于承载指示第一数据流包括有第一装置的数据的信息，从而可以减少信令开销，与现有技术更加兼容。
又一种可能的实施方式中，第二装置向第一装置发送指示第一数据流未包括第一装置的数据的信息。相对应的，第一装置接收来自第二装置的指示第一数据流未包括第一装置的数据的信息。第一装置基于指示第一数据流未包括第一装置的数据的信息，确定第一数据流中未包括第一装置的数据，继而无需尝试从第一数据流中获取第一装置的数据，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示第一数据流未包括第一装置的数据的信息承载于DCI，比如可以承载于DCI中的预设的第二字段，指示第一数据流未包括第一装置的数据的信息可以为该预设的第二字段的第二预设值。第二字段可以与第一字段为同一个字段，也可以为不同的两个字段。当第一字段与第二字段相同，则第一预设值与第二预设值不同。当第一字段与第二字段不同，则第一预设值与第二预设值可以相同也可以不同。
实施方式E2，第二装置通过其他方式(无需通过指示信息)指示第一数据流中是否承载有第一装置的信息。
一种可能的实施方式中，第二装置通过对DCI采用不同的无线网络临时标识(radio network temporary identity，RNTI)进行加扰的方式指示第一数据流中是否承载有第一装置的信息。比如，第二装置向第一装置发送第一DCI。相对应的，第一装置接收第一DCI。第一装置在确定第一DCI采用第一RNTI加扰的情况下，确定第一数据流包括有第一装置的数据。又一种可能的实施方式中，第一装置在确定第一DCI采用第二RNTI加扰的情况下，确定第一数据流未包括第一装置的数据。第一RNTI和第二RNTI不同。通过该实施方式可以隐式的指示第一数据流是否包括有第一装置的数据，从而可以节省第二装置发送的信息量，进而提高数据传输效率。
在上述步骤403中，第二装置发送的第一装置发送的目标数据流中可能包括第二数据 流，也可能未包括第二数据流。一种可能的实施方式中，第二装置可以向第一装置指示出目标数据流中是否承载有第二数据流。比如第二装置可以通过指示信息或不通过指示信息而是通过其他方式指示出目标数据流中是否承载有第二数据流，下面分别通过如下实施方式F1和实施方式F2进行介绍。
实施方式F1，第二装置通过指示信息指示目标数据流中是否承载有第二数据流。
在实施方式F1中，一种可能的实施方式中，第二装置向第一装置发送指示目标数据流包括有第二数据流的信息。相对应的，第一装置接收来自第二装置的指示目标数据流包括有第二数据流的信息。第一装置基于指示目标数据流包括有第二数据流，从目标数据流中获取第二数据流的数据。一种可能的实施方式中，指示目标数据流包括有第二数据流的信息承载于DCI，比如可以承载于DCI中的预设的第三字段，指示目标数据流包括有第二数据流的信息可以为该预设的第三字段的第三预设值。
又一种可能的实施方式中，第二装置向第一装置发送指示目标数据流未包括第二数据流的信息。相对应的，第一装置接收来自第二装置的指示目标数据流未包括第二数据流的信息。第一装置基于指示目标数据流未包括第二数据流，确定目标数据流中未包括第二数据流，继而无需尝试从目标数据流中获取第一装置的私有数据流，从而可以减少第一装置的工作量，降低第一装置的功耗。
一种可能的实施方式中，指示目标数据流未包括第二数据流的信息承载于DCI，比如可以承载于DCI中的预设的字段，指示目标数据流未包括第二数据流的信息可以为该预设的第四字段的第四预设值，如此，无需新设一条信令用于承载指示目标数据流未包括第二数据流的信息，从而可以减少信令开销，与现有技术更加兼容。第四字段可以与第三字段为同一个字段，也可以为不同的两个字段。当第三字段与第四字段相同，则第三预设值与第四预设值不同。当第三字段与第四字段不同，则第三预设值与第四预设值可以相同也可以不同。
实施方式F2，第二装置通过其他方式(无需通过指示信息)指示目标数据流中是否承载有第二数据流。
一种可能的实施方式中，第二装置通过对DCI采用不同的RNTI进行加扰的方式指示目标数据流中是否承载有第二数据流。比如，第二装置向第一装置发送第二DCI。相对应的，第一装置接收第二DCI。第一装置在确定第二DCI采用第三RNTI加扰的情况下，确定目标数据流包括第二数据流。又一种可能的实施方式中，第一装置在确定第二DCI采用第四RNTI加扰的情况下，确定目标数据流未包括第二数据流。第三RNTI和第四RNTI不同。如此，可以通过隐式的方式确定出目标数据流是否包括有第二数据流，通过该实施方式可以节省第二装置发送的信息量，进而提高数据传输效率。
需要说明的是，上述各个消息的名称仅仅是作为示例，随着通信技术的演变，上述任意消息均可能改变其名称，但不管其名称如何发生变化，只要其含义与本申请上述消息的含义相同，则均落入本申请的保护范围之内。
本申请实施例中，向终端设备发送信息可以理解为该信息的目的地是终端设备。例如，模块A向终端发送信息包括：模块A通过空口向终端发送该信息，可选的，模块A可以对该信息进行基带和/或中射频操作；或，模块A将该信息递交至模块B，由模块B向终端发送该信息。其中，模块B向终端发送该信息时，可以是透传该信息、将该信息分段后发送该信息、将该信息与其他信息复用后发送该信息。可选地，模块B可以对该信息进行 基带和/或中射频操作后发送该信息等。可选的，模块B可以将该信息封装在数据包中。可选的，模块B还可以为该数据包添加包头和/或填充比特等。
本申请实施例中，从终端设备接收信息可以理解为该信息的发源地是终端设备。例如，模块A从终端设备接收信息包括：模块A通过空口从终端接收该信息，可选的，模块A可以对该信息进行基带和/或中射频操作；或，模块B通过空口从终端接收该信息，并将该信息递交至模块A。其中，模块B将该信息递交至模块A，包括：将接收到的该信息透明地递交至模块A、将接收到的多个分段组合成该信息后递交至模块A、或从复用信息中提取出该信息后递交至模块A。可选地，模块B可以对接收到的信息进行基带和/或中射频操作后发送该信息等。可选的，模块B接收到的该信息被封装在数据包中。可选的，该数据包包括包头和/或填充比特等。
上述模块B可以是一个模块，或者是依次耦合的多个模块，不予限制。例如，模块A是DU模块，模块B是RU模块；再例如，模块A是CU-CP模块，模块B是DU模块和RU模块。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是，上述实现各网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，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，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
根据前述方法，图8为本申请实施例提供的装置的结构示意图。图8提供的装置可以为前图3和图4中的第一装置或第二装置。
参考图8，提供了一种装置1301的简化示意图。该装置1301用于实现本申请实施例的网元的功能，例如该网元可以是基站、终端、DU、CU、CU-CP、CU-UP或RU。该装置1301可以是该网元、或者是能够安装在该网元中的装置、或者是能够和该网元匹配使用的装置，不予限制，例如该装置可以是芯片或芯片系统。装置1301包括接口1303和处理器1302。可选的，处理器1302用于执行程序1305。处理器1302可以存储程序1305，或者从其他器件或其他设备(例如从存储器1304或者从第三方网站下载等)获取程序1305。可选的，装置1301包括存储器1304。存储器1304用于存储程序1306。程序1306可以是预先存储，也可以是后续加载。可选的，存储器1304还可以用于存储必要的数据。这些组件一起工作以提供本申请实施例中描述的各种功能。
处理器1302以包括一个或多个处理器，以作为计算设备的组合。处理器1302可以分别包括以下中的一个或多个：微处理器、微控制器、数字信号处理器(DSP)、数字信号处理设备(DSPD)，专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(PLD)、门控逻辑、晶体管逻辑、分立硬件电路、处理电路或其他合适的硬件、固件，和/或配置为执行本申请实施例中描述的各种功能的硬件和软件的组合。处理器1302可以是通用处理器或专用处理器。例如，处理器1302可以是基带处理器或中央处理器。基带处理器可以用于处理通信协议和通信数据。中央处理器可以用于执行软件程序，并处理软件程序中的数据。
接口1303可以包括用于使能与一个或多个计算机设备(例如本申请实施例的网元)通信的任何合适硬件或软件。例如，在一些实施例中，接口1303可以包括用于耦合有线连接的电线或耦合无线连接的无线接口的端子和/或引脚。在一些实施例中，接口1303可以包括发射器、接收器、接口和/或天线。该接口可以被配置为使用任何可用的协议(例如3GPP标准协议)使能计算机设备(例如本申请实施例的网元)之间的通信。
本申请实施例中的程序是指广泛意义上的软件。软件可以是程序代码、程序、子程序、指令集、代码、代码段、软件模块、应用程序、软件应用程序等。该程序可以在处理器和/或计算机中运行，以执行本申请实施例中描述的各种功能和/或过程。
存储器1304可以存储在处理器1302执行软件时所需的必要数据。存储器1304可以使用任何合适的存储技术来实现。例如，存储器1304可以是处理器和/或计算机可以访问的任何可用存储介质。存储介质的非限制性示例有：随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)、可移动介质、光盘存储器、磁盘存储介质、磁存储设备、闪存、寄存器、状态存储器、远程安装存储器、本地或远程存储器组件，或任何其他可以携带或存储软件、数据或信息并可由处理器/计算机访问的介质。
存储器1304和处理器1302可以分开设置，也可以集成在一起。处理器1302可以从存储器1304读取信息，存储和/或写入存储器中的信息。存储器1304可以集成在处理器1302中。处理器1302和存储器1304可以设置在集成电路(例如专用集成电路(application-specific integrated circuit，ASIC))中。集成电路可以设置在本申请实施例的网元或其他网络节点中。图中存储器1304为虚线是进一步标识存储器为可选地意思。
进一步的，该通信装置1301还可以进一步包括总线系统，其中，处理器1302、存储器1304、接口1303可以通过总线系统相连。
如图8所示，该装置1301可以为第一装置或第二装置，也可以为芯片(系统)或电路，比如可设置于第一装置的芯片(系统)或电路，再比如可设置于第二装置内的芯片(系统)或电路。
在装置1301用于实现第一装置的功能的情况下，一种可能的实施方式中，处理器1302用于通过接口1303向第二装置发送第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。处理器1302用于通过接口1303向第二装置发送第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
一种可能的实施方式中，处理器1302用于通过接口1303接收第一触发信息，第一触发信息触发第一装置反馈第一数据流的候选预编码矩阵的信息，基于第一触发信息向第二装置发送第一信息。
一种可能的实施方式中，处理器1302用于通过接口1303接收第二触发信息，第二触发信息触发第一装置反馈第二数据流的候选预编码矩阵的信息，基于第二触发信息向第二装置发送第二信息。
一种可能的实施方式中，处理器1302用于通过接口1303以第一时长为周期，周期性发送指示第一数据流的候选预编码矩阵的信息。指示第一数据流的候选预编码矩阵的信息 中的一个指示第一数据流的候选预编码矩阵的信息为第一信息。
一种可能的实施方式中，处理器1302用于通过接口1303以第二时长为周期，周期性发送指示第二数据流的候选预编码矩阵的信息。指示第二数据流的候选预编码矩阵的信息中的一个指示第二数据流的候选预编码矩阵的信息为第二信息。
在装置1301用于实现第二装置的功能的情况下，一种可能的实施方式中：处理器1302用于通过接口1303接收来自第一装置的第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。处理器1302用于通过接口1303接收来自第一装置的第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第一触发信息，第一触发信息触发第一装置反馈第一数据流的候选预编码矩阵的信息。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第二触发信息，第二触发信息触发第一装置反馈第二数据流的候选预编码矩阵的信息。
一种可能的实施方式中，处理器1302用于通过接口1303以第一时长为周期，周期性接收指示第一数据流的候选预编码矩阵的信息。指示第一数据流的候选预编码矩阵的信息中的一个指示第一数据流的候选预编码矩阵的信息为第一信息。
一种可能的实施方式中，处理器1302用于通过接口1303以第二时长为周期，周期性接收指示第二数据流的候选预编码矩阵的信息。指示第二数据流的候选预编码矩阵的信息中的一个指示第二数据流的候选预编码矩阵的信息为第二信息。
在装置1301用于实现第一装置的功能的情况下，一种可能的实施方式中：处理器1302用于通过接口1303接收来自第二装置的第三信息，基于第三信息接收来自第二装置的第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。
一种可能的实施方式中，处理器1302用于通过接口1303接收来自第二装置的第四信息。
一种可能的实施方式中，处理器1302用于通过接口1303接收来自第二装置的指示第一数据流包括有第一装置的数据的信息，基于指示第一数据流包括有第一装置的数据，从第一数据流中获取第一装置的数据。
一种可能的实施方式中，处理器1302用于通过接口1303接收第一DCI。处理器1302用于在确定第一DCI采用第一RNTI加扰的情况下，确定第一数据流包括有第一装置的数据。
一种可能的实施方式中，处理器1302用于通过接口1303接收第一DCI。处理器1302用于在确定第一DCI采用第二RNTI加扰的情况下，确定第一数据流未包括第一装置的数据。
一种可能的实施方式中，处理器1302用于通过接口1303基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。处理器1302用于通过接口1303接收来自第二装置的指示目标数据流包括有第二数据流的信息，第二数据流为第一装置的数据流。处理器1302用于基于指示目标数据流包括有第二数据流的信息，从目标数据流中获取第 二数据流中的数据。
一种可能的实施方式中，处理器1302用于通过接口1303基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。处理器1302用于通过接口1303接收第二DCI，处理器1302用于在确定第二DCI采用第三RNTI加扰的情况下，确定目标数据流包括有第二数据流的信息。
一种可能的实施方式中，处理器1302用于通过接口1303基于第三信息接收来自第二装置的目标数据流，目标数据流包括第一数据流。处理器1302用于在确定第二DCI采用第四RNTI加扰的情况下，确定目标数据流未包括有第二数据流的信息。
在装置1301用于实现第二装置的功能的情况下，一种可能的实施方式中：处理器1302用于通过接口1303向第一装置发送第三信息，处理器1302用于通过接口1303向第一装置发送第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第四信息。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送指示第一数据流包括有第一装置的数据的信息。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第一DCI，第一DCI采用第一RNTI加扰，第一RNTI指示第一数据流包括有第一装置的数据。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第一DCI，第一DCI采用第二RNTI加扰，第二RNTI指示第一数据流未包括有第一装置的数据。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送目标数据流，目标数据流包括第一数据流。一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送指示目标数据流包括有第二数据流的信息，第二数据流为第一装置的数据流。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送目标数据流，目标数据流包括第一数据流。一种可能的实施方式中，第二装置向第一装置发送第二DCI，第二DCI采用第三RNTI加扰，第三RNTI指示目标数据流包括有第二数据流的信息。
一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送目标数据流，目标数据流包括第一数据流。一种可能的实施方式中，处理器1302用于通过接口1303向第一装置发送第二DCI，第二DCI采用第四RNTI加扰，第四RNTI指示目标数据流未包括有第二数据流的信息。
该通信装置所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
[根据细则91更正 01.11.2022]
根据前述方法，图9为本申请实施例提供的通信装置的结构示意图，如图9所示，装置1401可以包括收发器1403和处理器1402。进一步的，该装置1401可以包括有存储器1404。图中存储器1404为虚线是进一步标识存储器为可选地意思。收发器1403，用于输入和/或输出信息；处理器1402，用于执行计算机程序或指令，使得装置1401实现上述图3或图4的相关方案中第一装置或第二装置。本申请实施例中，收发器1403可以实现上述图8的接口1303所实现的方案，处理器1402可以实现上述图8的处理器1302所实现的方案，存储器1404可以实现上述图8的存储器1304所实现的方案，在此不再赘述。
基于以上实施例以及相同构思，图10为本申请实施例提供的通信装置的示意图。图10提供的装置可以为前图3和图4中的第一装置或第二装置。如图10所示，该装置1501可以为第一装置或第二装置，也可以为芯片(系统)或电路，比如可设置于第一装置的芯片(系统)或电路，再比如可设置于第二装置内的芯片(系统)或电路。
该装置1501包括处理单元1502和通信单元1503。进一步的，该装置1501可以包括有存储单元1504，也可以不包括存储单元1504。图中存储单元1504为虚线是进一步标识存储器为可选地意思。
在装置1501用于实现网络设备的功能的情况下，一种可能的实施方式中，处理单元1502用于通过通信单元1503向第二装置发送第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。处理单元1502用于通过通信单元1503向第二装置发送第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
在装置1501用于实现第二装置的功能的情况下，一种可能的实施方式中，处理单元1502用于通过通信单元1503接收来自第一装置的第一信息，第一信息包括指示第一预编码矩阵的信息，第一预编码矩阵为第二装置对第一数据流进行预编码的候选预编码矩阵。处理单元1502用于通过通信单元1503接收来自第一装置的第二信息，第二信息包括指示第二预编码矩阵的信息，第二预编码矩阵为第二装置对第二数据流进行预编码的候选预编码矩阵，第一数据流和第二数据流的时域资源有交集。
在装置1501用于实现第一装置的功能的情况下，一种可能的实施方式中，处理单元1502用于通过通信单元1503接收来自第二装置的第三信息，基于第三信息接收来自第二装置的第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。
在装置1501用于实现第二装置的功能的情况下，一种可能的实施方式中，处理单元1502用于通过通信单元1503向第一装置发送第三信息，向第一装置发送第一数据流和第二数据流，第一数据流和第二数据流的时域资源有交集。
该通信装置所涉及的与本申请实施例提供的技术方案相关的概念，解释和详细说明及其他步骤请参见前述方法或其他实施例中关于这些内容的描述，此处不做赘述。
可以理解的是，上述装置1501中各个单元的功能可以参考相应方法实施例的实现，此处不再赘述。
应理解，以上通信装置的单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。本申请实施例中，通信单元1503可以由上述图8的接口1303实现，处理单元1502可以由上述图8的处理器1302实现。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码或指令，当该计算机程序代码或指令在计算机上运行时，使得该计算机执行图3或图4所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读存储介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图3或图4所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种芯片系统，该芯片系统可以包括处理器。该处理器与存储器耦合，可用于执行图3或图4所示实施例中任意一个实施例的方 法。可选地，该芯片系统还包括存储器。存储器，用于存储计算机程序(也可以称为代码，或指令)。处理器，用于从存储器调用并运行计算机程序，使得安装有芯片系统的设备执行图3或图4所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个第一装置和第二装置。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，所述计算机程序产品存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被计算机执行时，使所述计算机执行如图3或图4所示实施例中任意一个实施例的方法。
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个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、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
需要指出的是，本专利申请文件的一部分包含受著作权保护的内容。除了对专利局的专利文件或记录的专利文档内容制作副本以外，著作权人保留著作权。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在两个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
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种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，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。功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (52)

  1. 一种通信方法，其特征在于，包括：
    第一装置向第二装置发送第一信息，所述第一信息包括指示第一预编码矩阵的信息，所述第一预编码矩阵为所述第二装置对第一数据流进行预编码的候选预编码矩阵；
    所述第一装置向所述第二装置发送第二信息，所述第二信息包括指示第二预编码矩阵的信息，所述第二预编码矩阵为所述第二装置对第二数据流进行预编码的候选预编码矩阵，所述第一数据流和所述第二数据流的时域资源有交集。
  2. 如权利要求1所述的方法，其特征在于，所述第一信息还包括所述第一预编码矩阵对应的调制与编码策略和/或所述第一预编码矩阵对应的秩指示信息；
    和/或；
    所述第二信息还包括所述第二预编码矩阵对应的调制与编码策略和/或所述第二预编码矩阵对应的秩指示信息。
  3. 如权利要求1或2所述的方法，其特征在于，所述第一预编码矩阵对应的带宽与所述第二预编码矩阵对应的带宽不同；或，
    所述第一预编码矩阵对应的码本级数与所述第二预编码矩阵对应的码本级数不同。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述第一预编码矩阵对应的预编码资源块组与所述第二预编码矩阵对应的预编码资源块组的数量不同。
  5. 如权利要求1-4任一项所述的方法，其特征在于，所述第一信息包括指示多个所述第一预编码矩阵的信息，所述多个第一预编码矩阵中的至少两个第一预编码矩阵不同；
    和/或；
    所述第二信息包括指示多个所述第二预编码矩阵的信息，所述多个第二预编码矩阵中的至少两个第二预编码矩阵不同。
  6. 如权利要求1-5任一项所述的方法，其特征在于，所述第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，所述第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵；
    所述第一预编码矩阵集合为所述第二预编码矩阵集合的子集。
  7. 如权利要求1-6任一项所述的方法，其特征在于，所述第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，所述第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵；
    所述第一预编码矩阵集合中的包括的预编码矩阵的数量与所述第二预编码矩阵集合中包括的预编码矩阵的数量不同。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述第一装置向第二装置发送第一信息，包括：
    所述第一装置接收第一触发信息，所述第一触发信息触发所述第一装置反馈所述第一数据流的候选预编码矩阵的信息；
    所述第一装置基于所述第一触发信息向所述第二装置发送所述第一信息。
  9. 如权利要求1-8任一项所述的方法，其特征在于，所述第一装置向第二装置发送第二信息，包括：
    所述第一装置接收第二触发信息，所述第二触发信息触发所述第一装置反馈所述第二数据流的候选预编码矩阵的信息；
    所述第一装置基于所述第二触发信息向所述第二装置发送所述第二信息。
  10. 如权利要求1-7任一项所述的方法，其特征在于，所述第一装置向第二装置发送第 一信息，包括：
    所述第一装置以第一时长为周期，周期性发送指示所述第一数据流的候选预编码矩阵的信息，所述指示所述第一数据流的候选预编码矩阵的信息中的一个所述指示所述第一数据流的候选预编码矩阵的信息为所述第一信息。
  11. 如权利要求1-7任一项所述的方法，其特征在于，所述第一装置向所述第二装置发送第二信息，包括：
    所述第一装置以第二时长为周期，周期性发送指示所述第二数据流的候选预编码矩阵的信息，所述指示所述第二数据流的候选预编码矩阵的信息中的一个所述指示所述第二数据流的候选预编码矩阵的信息为所述第二信息。
  12. 一种通信方法，其特征在于，包括：
    第二装置接收来自第一装置的第一信息，所述第一信息包括指示第一预编码矩阵的信息，所述第一预编码矩阵为所述第二装置对第一数据流进行预编码的候选预编码矩阵；
    所述第二装置接收来自所述第一装置的第二信息，所述第二信息包括指示第二预编码矩阵的信息，所述第二预编码矩阵为所述第二装置对第二数据流进行预编码的候选预编码矩阵，所述第一数据流和所述第二数据流的时域资源有交集。
  13. 如权利要求12所述的方法，其特征在于，所述第一信息还包括所述第一预编码矩阵对应的调制与编码策略和/或所述第一预编码矩阵对应的秩指示信息；
    和/或；
    所述第二信息还包括所述第二预编码矩阵对应的调制与编码策略和/或所述第二预编码矩阵对应的秩指示信息。
  14. 如权利要求12或13所述的方法，其特征在于，所述第一预编码矩阵对应的带宽与所述第二预编码矩阵对应的带宽不同；或，
    所述第一预编码矩阵对应的码本级数与所述第二预编码矩阵对应的码本级数不同。
  15. 如权利要求12-14任一项所述的方法，其特征在于，所述第一预编码矩阵对应的预编码资源块组与所述第二预编码矩阵对应的预编码资源块组的数量不同。
  16. 如权利要求12-15任一项所述的方法，其特征在于，所述第一信息包括指示多个所述第一预编码矩阵的信息，所述多个第一预编码矩阵中的至少两个第一预编码矩阵不同；
    和/或；
    所述第二信息包括指示多个所述第二预编码矩阵的信息，所述多个第二预编码矩阵中的至少两个第二预编码矩阵不同。
  17. 如权利要求12-16任一项所述的方法，其特征在于，所述第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，所述第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵；
    所述第一预编码矩阵集合为所述第二预编码矩阵集合的子集。
  18. 如权利要求12-17任一项所述的方法，其特征在于，所述第一预编码矩阵为第一预编码矩阵集合中的预编码矩阵，所述第二预编码矩阵为第二预编码矩阵集合中的预编码矩阵；
    所述第一预编码矩阵集合中的包括的预编码矩阵的数量与所述第二预编码矩阵集合中包括的预编码矩阵的数量不同。
  19. 如权利要求12-18任一项所述的方法，其特征在于，所述第二装置接收来自第一装置的第一信息之前，还包括：
    所述第二装置向所述第一装置发送第一触发信息，所述第一触发信息触发所述第一装置反馈所述第一数据流的候选预编码矩阵的信息。
  20. 如权利要求12-19任一项所述的方法，其特征在于，所述第二装置接收来自所述第一装置的第二信息之前，还包括：
    所述第二装置向所述第一装置发送第二触发信息，所述第二触发信息触发所述第一装置反馈所述第二数据流的候选预编码矩阵的信息。
  21. 如权利要求12-18任一项所述的方法，其特征在于，所述第二装置接收来自第一装置的第一信息，包括：
    所述第二装置以第一时长为周期，周期性接收指示所述第一数据流的候选预编码矩阵的信息，所述指示所述第一数据流的候选预编码矩阵的信息中的一个所述指示所述第一数据流的候选预编码矩阵的信息为所述第一信息。
  22. 如权利要求12-18任一项所述的方法，其特征在于，所述第二装置接收来自所述第一装置的第二信息，包括：
    所述第二装置以第二时长为周期，周期性接收指示所述第二数据流的候选预编码矩阵的信息，所述指示所述第二数据流的候选预编码矩阵的信息中的一个所述指示所述第二数据流的候选预编码矩阵的信息为所述第二信息。
  23. 一种通信方法，其特征在于，包括：
    第一装置接收来自第二装置的第三信息；
    所述第一装置基于所述第三信息接收来自所述第二装置的第一数据流和第二数据流，所述第一数据流和所述第二数据流的时域资源有交集；
    其中，所述第三信息包括以下内容中的至少一项：
    指示所述第一数据流占用的时频资源的信息；
    指示所述第一数据流的调制编码方式的信息；
    指示所述第一装置的数据在所述第一数据流中所处的位置的位置指示信息；或，
    所述第一数据流对应的解调参考信号DMRS端口。
  24. 如权利要求23所述的方法，其特征在于，所述第一数据流包括所述第一装置的数据；
    所述位置指示信息包括：所述第一装置的数据对应的逻辑比特组的组标识信息；
    其中，所述逻辑比特组包括一个或多个连续的逻辑比特，所述逻辑比特组与一个物理比特、连续多个物理比特或不连续多个物理比特具有映射关系。
  25. 如权利要求23-24任一项所述的方法，其特征在于，所述第三信息还包括：
    指示所述第一数据流的数据对应的码字映射的层的标识信息。
  26. 如权利要求23-25任一项所述的方法，其特征在于，所述第一数据流的数据对应一个或多个码字；和/或，所述第一数据流的数据对应的所述一个或多个码字中的一个码字映射至一层或多层。
  27. 如权利要求23-26任一项所述的方法，其特征在于，所述第二数据流的数据对应一个或多个码字，和/或，所述第二数据流的所述一个或多个码字中的一个码字映射至一层或 多层。
  28. 如权利要求23-27任一项所述的方法，其特征在于，所述第一数据流的数据对应的码字与所述第二数据流的数据对应的码字不同；和/或，
    所述第一数据流的数据对应的码字映射的层与所述第二数据流的数据对应的码字映射的层不同。
  29. 如权利要求23-28任一项所述的方法，其特征在于，所述方法还包括：
    所述第一装置接收来自所述第二装置的第四信息；
    其中，所述第四信息包括以下内容中的至少一项：
    指示第二数据流占用的时频资源的信息；
    指示所述第二数据流的调制编码方式的信息；
    指示所述第二数据流对应的DMRS端口的信息；或，
    指示所述第二数据流中所述第一装置的数据对应的码字映射的层的标识信息。
  30. 如权利要求23-29任一项所述的方法，其特征在于，所述方法还包括：
    所述第一装置接收来自所述第二装置的指示所述第一数据流包括有所述第一装置的数据的信息；
    所述第一装置基于所述指示所述第一数据流包括有所述第一装置的数据，从所述第一数据流中获取所述第一装置的数据。
  31. 如权利要求23-29任一项所述的方法，其特征在于，所述方法还包括：
    所述第一装置接收第一下行控制信息DCI；
    所述第一装置在确定所述第一DCI采用第一无线网络临时标识符RNTI加扰的情况下，确定所述第一数据流包括有所述第一装置的数据。
  32. 如权利要求23-29任一项所述的方法，其特征在于，所述方法还包括：
    所述第一装置接收第一DCI；
    所述第一装置在确定所述第一DCI采用第二RNTI加扰的情况下，确定所述第一数据流未包括所述第一装置的数据。
  33. 如权利要求23-32任一项所述的方法，其特征在于，所述第一装置基于所述第三信息接收来自所述第二装置的第一数据流和第二数据流，包括：
    所述第一装置基于所述第三信息接收来自所述第二装置的目标数据流，所述目标数据流包括所述第一数据流；
    所述方法还包括：
    所述第一装置接收来自所述第二装置的指示所述目标数据流包括有第二数据流的信息，所述第二数据流为所述第一装置的数据流；
    所述第一装置基于指示所述目标数据流包括有第二数据流的信息，从所述目标数据流中获取所述第二数据流中的数据。
  34. 如权利要求23-32任一项所述的方法，其特征在于，所述第一装置基于所述第三信息接收来自所述第二装置的第一数据流和第二数据流，包括：
    所述第一装置基于所述第三信息接收来自所述第二装置的目标数据流，所述目标数据流包括所述第一数据流；
    所述方法还包括：
    所述第一装置接收第二DCI；
    所述第一装置在确定所述第二DCI采用第三RNTI加扰的情况下，确定所述目标数据流包括有第二数据流的信息。
  35. 一种通信方法，其特征在于，包括：
    第二装置向第一装置发送第三信息；
    所述第二装置向所述第一装置发送第一数据流和第二数据流，所述第一数据流和所述第二数据流的时域资源有交集；
    其中，所述第三信息包括以下内容中的至少一项：
    指示所述第一数据流占用的时频资源的信息；
    指示所述第一数据流的调制编码方式的信息；
    指示所述第一装置的数据在所述第一数据流中所处的位置的位置指示信息；或，
    所述第一数据流对应的解调参考信号DMRS端口。
  36. 如权利要求35所述的方法，其特征在于，所述第一数据流包括所述第一装置的数据；
    所述位置指示信息包括：所述第一装置的数据对应的逻辑比特组的组标识信息；
    其中，所述逻辑比特组包括一个或多个连续的逻辑比特，所述逻辑比特组与一个物理比特、连续多个物理比特或不连续多个物理比特具有映射关系。
  37. 如权利要求35-36任一项所述的方法，其特征在于，所述第三信息还包括：
    指示所述第一数据流的数据对应的码字映射的层的标识信息。
  38. 如权利要求35-37任一项所述的方法，其特征在于，所述第一数据流的数据对应一个或多个码字；和/或，所述第一数据流的数据对应的所述一个或多个码字中的一个码字映射至一层或多层。
  39. 如权利要求35-38任一项所述的方法，其特征在于，所述第二数据流的数据对应一个或多个码字，和/或，所述第二数据流的所述一个或多个码字中的一个码字映射至一层或多层。
  40. 如权利要求35-39任一项所述的方法，其特征在于，所述第一数据流的数据对应的码字与所述第二数据流的数据对应的码字不同；和/或，
    所述第一数据流的数据对应的码字映射的层与所述第二数据流的数据对应的码字映射的层不同。
  41. 如权利要求35-40任一项所述的方法，其特征在于，所述方法还包括：
    所述第二装置向所述第一装置发送第四信息；
    其中，所述第四信息包括以下内容中的至少一项：
    指示第二数据流占用的时频资源的信息；
    指示所述第二数据流的调制编码方式的信息；
    指示所述第二数据流对应的DMRS端口的信息；或，
    指示所述第二数据流中所述第一装置的数据对应的码字映射的层的标识信息。
  42. 如权利要求35-41任一项所述的方法，其特征在于，所述方法还包括：
    所述第二装置向所述第一装置发送指示所述第一数据流包括有所述第一装置的数据的信息。
  43. 如权利要求35-41任一项所述的方法，其特征在于，所述方法还包括：
    所述第二装置向所述第一装置发送第一下行控制信息DCI，所述第一DCI采用第一无线网络临时标识符RNTI加扰，所述第一RNTI指示所述第一数据流包括有所述第一装置的数据。
  44. 如权利要求35-41任一项所述的方法，其特征在于，所述方法还包括：
    所述第二装置向所述第一装置发送第一DCI，所述第一DCI采用第二RNTI加扰，所述第二RNTI指示所述第一数据流未包括有所述第一装置的数据。
  45. 如权利要求35-44任一项所述的方法，其特征在于，所述第二装置向所述第一装置发送第一数据流和第二数据流，包括：
    所述第二装置向所述第一装置发送目标数据流，所述目标数据流包括所述第一数据流；
    所述方法还包括：
    所述第二装置向所述第一装置发送指示所述目标数据流包括有第二数据流的信息，所述第二数据流为所述第一装置的数据流。
  46. 如权利要求35-44任一项所述的方法，其特征在于，所述第二装置向所述第一装置发送第一数据流和第二数据流，包括：
    所述第二装置向所述第一装置发送目标数据流，所述目标数据流包括所述第一数据流；
    所述方法还包括：
    所述第二装置向所述第一装置发送第二DCI，所述第二DCI采用第三RNTI加扰，所述第三RNTI指示所述目标数据流包括有第二数据流的信息。
  47. 一种通信装置，其特征在于，包括通信接口和至少一个处理器，所述通信接口和所述至少一个处理器通过线路互联；
    所述通信接口，用于输入和/或输出信令或数据；
    所述处理器，用于执行计算机可执行程序，使得权利要求1-46任一项所述的方法被执行。
  48. 一种通信装置，其特征在于，包括处理器和存储器，
    所述存储器，用于存储计算机程序或指令；
    所述处理器，用于执行存储器中的计算机程序或指令，使得权利要求1-46任一项所述的方法被执行。
  49. 一种通信装置，其特征在于，包括处理单元和通信单元，所述处理单元用于通过所述通信单元执行如权利要求1-46任一项所述的方法。
  50. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令在被计算机调用时，使得权利要求1-46任一项所述的方法被执行。
  51. 一种芯片系统，其特征在于，所述芯片系统包括至少一个处理器，和接口电路，所述接口电路和所述至少一个处理器通过线路互联，所述处理器通过运行指令，以执行权利要求1-46任一项所述的方法。
  52. 一种计算机程序产品，其特征在于，所述计算机程序产品存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被计算机执行时，使所述计算机执行如权利要求1-46中任一项所述的方法。
PCT/CN2022/124415 2022-10-10 2022-10-10 通信方法、装置、芯片系统、存储介质及计算机程序产品 Ceased WO2024077448A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22961643.8A EP4593300A4 (en) 2022-10-10 2022-10-10 COMMUNICATION METHOD, DEVICE, CHIP SYSTEM, STORAGE MEDIA AND COMPUTER PROGRAM PRODUCT
CN202280100610.1A CN120035942A (zh) 2022-10-10 2022-10-10 通信方法、装置、芯片系统、存储介质及计算机程序产品
PCT/CN2022/124415 WO2024077448A1 (zh) 2022-10-10 2022-10-10 通信方法、装置、芯片系统、存储介质及计算机程序产品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/124415 WO2024077448A1 (zh) 2022-10-10 2022-10-10 通信方法、装置、芯片系统、存储介质及计算机程序产品

Publications (1)

Publication Number Publication Date
WO2024077448A1 true WO2024077448A1 (zh) 2024-04-18

Family

ID=90668487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/124415 Ceased WO2024077448A1 (zh) 2022-10-10 2022-10-10 通信方法、装置、芯片系统、存储介质及计算机程序产品

Country Status (3)

Country Link
EP (1) EP4593300A4 (zh)
CN (1) CN120035942A (zh)
WO (1) WO2024077448A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158263A (zh) * 2010-02-11 2011-08-17 索尼公司 基于码书的信道信息反馈方法、设备和系统
CN107925451A (zh) * 2015-07-23 2018-04-17 Lg 电子株式会社 多天线无线通信系统中的基于码本的信号发送/接收方法及其设备
CN108282207A (zh) * 2017-01-06 2018-07-13 华为技术有限公司 一种预编码矩阵指示方法、装置和系统
CN110351851A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 数据传输方法、终端设备和网络设备
CN111510399A (zh) * 2019-01-30 2020-08-07 中兴通讯股份有限公司 预编码的确定，数据的检测方法及装置
CN113938169A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 预编码矩阵确定方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101271266B1 (ko) * 2008-12-18 2013-06-07 엔이씨 래버러터리즈 아메리카 인코포레이티드 Ｏｆｄｍａ-ｍｕ-ｍｉｍｏ 시스템에서 오버랩하는 함께 스케쥴링된 사용자들의 스케쥴링 정보를 전달하기 위한 방법 및 시스템
WO2018205259A1 (en) * 2017-05-12 2018-11-15 Qualcomm Incorporated Precoder resource group allocation methods for mimo communication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158263A (zh) * 2010-02-11 2011-08-17 索尼公司 基于码书的信道信息反馈方法、设备和系统
CN107925451A (zh) * 2015-07-23 2018-04-17 Lg 电子株式会社 多天线无线通信系统中的基于码本的信号发送/接收方法及其设备
CN108282207A (zh) * 2017-01-06 2018-07-13 华为技术有限公司 一种预编码矩阵指示方法、装置和系统
CN110351851A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 数据传输方法、终端设备和网络设备
CN111510399A (zh) * 2019-01-30 2020-08-07 中兴通讯股份有限公司 预编码的确定，数据的检测方法及装置
CN113938169A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 预编码矩阵确定方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4593300A4 *

Also Published As

Publication number Publication date
EP4593300A4 (en) 2025-11-12
CN120035942A (zh) 2025-05-23
EP4593300A1 (en) 2025-07-30

Similar Documents

Publication Publication Date Title
CN113872742B (zh) 无线通信系统中的终端、基站及其执行的方法
CN102843209B (zh) 传输控制信令的方法和装置
CN104365049B (zh) 在无额外参考信号下的控制信道上的发送分集的通信方法和装置
JP2024129033A (ja) 拡張タイプｉｉ ｃｓｉ報告のためのｃｓｉ省略ルール
CN115174318A (zh) 无线通信系统中的终端和基站及其方法
WO2020207369A1 (zh) 一种信道测量方法和通信装置
CN112425083B (zh) 在无线通信系统中执行波束成形的方法和设备
CN108352877A (zh) 共享参考信号的动态预编码
US10511366B2 (en) Signaling transmission method and device for multiple-input multiple-output system
WO2013000253A1 (zh) 协作多点传输系统中信息的交互方法及协作多点传输系统
CN110933747B (zh) 一种资源配置方法及通信装置
CN111132173B (zh) 上行信号的传输方法及终端、网络设备
WO2018202018A1 (zh) 一种资源配置的方法及设备
CN107370591A (zh) 信令传输方法、装置及系统
WO2018196589A1 (zh) 数据发送方法、数据接收方法、网络设备和终端设备
CN105375962A (zh) 一种发送和接收参考信号的方法和通信节点
CN113746606A (zh) 一种通信方法及装置
WO2014190822A1 (zh) 一种下行虚拟多天线系统的数据传输方法、装置及系统
CN102098138B (zh) 处理信道状态的反馈信息的方法、装置和系统
WO2024077448A1 (zh) 通信方法、装置、芯片系统、存储介质及计算机程序产品
WO2015100939A1 (zh) 一种实现空分复用的方法、基站及终端
CN115987361A (zh) 基带单元及其方法和无线电单元的方法
CN108476514A (zh) 一种参考符号指示方法、设备及系统
US20250330287A1 (en) Communication method and apparatus
US20250274943A1 (en) Uplink transmit precoding matrix under mixed feedback conditions: closed loop

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22961643

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202280100610.1

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2022961643

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2022961643

Country of ref document: EP

Effective date: 20250422

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 202280100610.1

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2022961643

Country of ref document: EP