WO2024020812A1 - 系数指示方法、装置及存储介质 - Google Patents

系数指示方法、装置及存储介质 Download PDF

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Publication number
WO2024020812A1
WO2024020812A1 PCT/CN2022/108049 CN2022108049W WO2024020812A1 WO 2024020812 A1 WO2024020812 A1 WO 2024020812A1 CN 2022108049 W CN2022108049 W CN 2022108049W WO 2024020812 A1 WO2024020812 A1 WO 2024020812A1
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Prior art keywords
coefficient
trp
polarization direction
amplitude
indication information
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PCT/CN2022/108049
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English (en)
French (fr)
Inventor
高雪媛
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280002842.3A priority Critical patent/CN117769811A/zh
Priority to PCT/CN2022/108049 priority patent/WO2024020812A1/zh
Publication of WO2024020812A1 publication Critical patent/WO2024020812A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Definitions

  • the present application relates to the field of mobile communications, and in particular to a coefficient indication method, device and storage medium.
  • network equipment and terminals can communicate, and the network equipment can use a determined codebook structure to perform precoding calculations, so that the network equipment can send precoded data to the terminal.
  • the terminal reports the combination coefficient corresponding to the currently used codebook structure through a differential method in the polarization direction according to the currently used codebook structure, so that the network device can perform precoding based on the combination coefficient reported by the terminal.
  • TRPs Transmission Reception Points
  • Embodiments of the present application provide a coefficient indication method, device and storage medium, which expands the way for terminals to report the position of non-zero coefficients in combined coefficients, and is used by network equipment to obtain non-zero coefficient position information corresponding to multiple TRPs, thereby ensuring Reliability of communication between terminals and network equipment.
  • the technical solutions are as follows:
  • a coefficient indication method is provided, the method is executed by a terminal, and the method includes:
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is determined by the terminal according to the codebook parameters of the multiple TRP groups. coefficients, and the combined coefficients are used for the network device to perform precoding calculations;
  • a coefficient indication method is provided, the method is performed by a network device, the method includes:
  • each TRP group including at least one TRP;
  • Receive first indication information sent by the terminal the first indication information is determined by the terminal according to the configuration information, the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient, the combination coefficient is the The coefficients determined by the codebook parameters of the multiple TRP groups of the terminal, and the combined coefficients are used by the network device to perform precoding calculations.
  • a coefficient indicating device is provided, and the device includes:
  • a receiving module configured to receive configuration information sent by the network device, where the configuration information is used to configure codebook parameters of multiple TRP groups, and each TRP group includes at least one TRP;
  • Determining module configured to determine first indication information according to the configuration information.
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is the terminal according to the multiple TRP groups.
  • the coefficients determined by the codebook parameters, and the combined coefficients are used by the network device to perform precoding calculations;
  • a sending module configured to send the first indication information to the network device.
  • a coefficient indicating device is provided, and the device includes:
  • a sending module configured to send configuration information to the terminal, where the configuration information is used to configure codebook parameters of multiple TRP groups, and each TRP group includes at least one TRP;
  • a receiving module configured to receive the first indication information sent by the terminal, the first indication information being determined by the terminal according to the configuration information, the first indication information being used to indicate the position of the non-zero coefficient in the combination coefficient, so
  • the combination coefficient is a coefficient determined by the terminal according to the codebook parameters of the multiple TRP groups, and the combination coefficient is used by the network device for precoding calculation.
  • a terminal includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute Instructions may be executed to implement the coefficient indication method as described above.
  • a network device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute executable instructions to implement the coefficient indication method as described above.
  • a communication system includes a terminal and a network device.
  • the terminal is used to implement the coefficient indication method as described in the first aspect.
  • the network device is used to implement The coefficient indication method as described in the second aspect above.
  • a computer-readable storage medium stores executable program code.
  • the executable program code is loaded and executed by a processor to implement the coefficient indication method in the above aspect.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal or network device, it is used to implement the coefficient indication method in the above aspect.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal or a network device, it is used to implement the coefficient indication method of the above aspect.
  • This application provides a solution that supports indicating the position of non-zero coefficients in the combined coefficients of multiple TRPs.
  • the terminal determines the position of the non-zero coefficients in the combined coefficients of multiple TRPs based on the codebook parameters of multiple TRPs, extending the terminal.
  • the method of reporting the position of the non-zero coefficients in the combined coefficient is used by the network device to obtain the position information of the non-zero coefficients corresponding to multiple TRPs, thereby ensuring the reliability of communication between the terminal and the network device.
  • Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application
  • Figure 2 shows a block diagram of another communication system provided by an exemplary embodiment of the present application
  • Figure 3 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application
  • Figure 4 shows a flow chart of a quantization coefficient transmission method provided by an exemplary embodiment of the present application
  • Figure 5 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application
  • Figure 6 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application
  • Figure 7 shows a block diagram of a coefficient indicating device provided by an exemplary embodiment of the present application.
  • Figure 8 shows a block diagram of another coefficient indicating device provided by an exemplary embodiment of the present application.
  • Figure 9 shows a block diagram of a coefficient indicating device provided by an exemplary embodiment of the present application.
  • Figure 10 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or “when” or “in response to determining.”
  • the information including but not limited to user equipment information, user personal information, etc.
  • data including but not limited to data used for analysis, stored data, displayed data, etc.
  • signals involved in this application All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.
  • Multipoint cooperative transmission technology refers to m-TRP (Muplti-TRP, mTRP)/panel (antenna panel) to provide data services for one user.
  • Multipoint cooperative transmission technology includes two transmission methods: coherent transmission (CJT, Coherent Joint Transmission) and non-coherent transmission (NCJT, Non-Coherent Joint Transmission).
  • CJT means that each data stream will be mapped to the m-TRP/Panel participating in the collaboration through a weighted vector.
  • CJT is equivalent to splicing multiple sub-arrays into a higher-dimensional virtual array to obtain higher shaping or precoding gains.
  • the network device communicates with the terminal through 3 TRPs, and the 3 TRPs are transmitted through the CJT.
  • the following optional codebook structure can be used to calculate the user's downlink data transmission precoding.
  • a n and p n respectively represent the phase and amplitude factors corresponding to the nth TRP.
  • W 1,n represents the SD (Spatial Domain, spatial domain) basis vector corresponding to the nth TRP
  • W f,n represents the corresponding FD (Frequency Domain, frequency domain) basis vector of the nth TRP.
  • H is the conjugate transpose.
  • the second type is the first type:
  • a n and p n respectively represent the phase and amplitude factors corresponding to the nth TRP. Indicates the combination coefficient corresponding to the nth TRP.
  • W SF,n represents the combination of SD and FD basis vectors corresponding to the nth TRP.
  • the third type is the third type.
  • W 1,n represents the SD basis vector corresponding to the nth TRP, represents the combination coefficient corresponding to N TRPs, and W f represents the FD basis vector corresponding to N TRPs.
  • H is the conjugate transpose.
  • FIG. 2 shows a block diagram of another communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a terminal 10 and a network device 20.
  • the number of terminals 10 is usually multiple, and one or more terminals 10 can be distributed in the cell managed by each network device 20 .
  • the terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS) and so on.
  • UE User Equipment
  • MS Mobile Station
  • the network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10 .
  • the above-mentioned devices that provide wireless communication functions for the terminal 10 are collectively referred to as network equipment.
  • a connection can be established between the network device 20 and the terminal 10 through an air interface, so that communication, including signaling and data interaction, can be performed through the connection.
  • the number of network devices 20 may be multiple, and communication between two adjacent network devices 20 may also be carried out in a wired or wireless manner.
  • the terminal 10 can perform coefficient indication between different network devices 20 , that is, establish connections with different network devices 20 .
  • the network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc.
  • the names of devices with network device functions may be different.
  • 5G NR New Radio, New Radio
  • they are called gNodeB or gNB.
  • the name "network device” may change.
  • the "5G NR system" in the embodiments of this application may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solution described in the embodiments of this application can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.
  • Figure 3 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application, which can be applied to the terminal and network equipment shown in Figure 2.
  • the method includes at least part of the following content:
  • Step 301 The network device sends configuration information to the terminal.
  • the configuration information is used to configure codebook parameters of multiple TRP groups.
  • Each TRP group includes at least one TRP.
  • Step 302 The terminal receives the configuration information sent by the network device.
  • the network device configures the codebook parameters of multiple TRP groups for the terminal, so that the terminal can determine the codebook parameters corresponding to the TRP group used for communication.
  • Each TRP group includes at least one TRP, that is, the number of TRPs included in the TRP group includes two situations. One is that the TRP group includes one TRP, and the other is that the TRP group includes multiple TRPs.
  • a TRP group if a TRP group includes one TRP, that is, one TRP is called a TRP group.
  • the TRP group may also be called a TRP, which is not limited in the embodiment of this application.
  • the codebook parameters include at least one of the number of SD basis vectors, the number of ports, the number of FD basis vectors, the number of pairs of SD basis vectors and FD basis vectors.
  • Step 303 The terminal determines the first indication information according to the configuration information.
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is a coefficient determined by the terminal according to the codebook parameters of multiple TRP groups, and the combination coefficient Used for network equipment to perform precoding calculations.
  • the terminal after the terminal determines the codebook parameters based on the configuration information sent by the network device, it can determine the first indication information used to indicate the position of the non-zero coefficient in the combination coefficient according to the configured codebook parameters.
  • the combination coefficient sent by the terminal is a coefficient determined for multiple TRP groups, and the network device can perform precoding calculation based on the combination coefficient.
  • Step 304 The terminal sends the first indication information to the network device.
  • Step 305 The network device receives the first indication information sent by the terminal.
  • the terminal indicates the combination coefficients corresponding to multiple TRP groups through the first indication information.
  • the network device can determine the combination coefficient for each TRP group generated by the terminal. .
  • the network device performs precoding calculation based on the position of the non-zero coefficient among the combination coefficients in the first indication information.
  • the steps performed by the terminal can separately form a new embodiment, and the steps performed by the network device can also separately form a new embodiment, which is not limited in this application.
  • This application provides a solution that supports indicating the position of non-zero coefficients in the combined coefficients of multiple TRPs.
  • the terminal determines the position of the non-zero coefficients in the combined coefficients of multiple TRPs based on the codebook parameters of multiple TRPs, extending the terminal.
  • the method of reporting the position of the non-zero coefficients in the combined coefficient is used by the network device to obtain the position information of the non-zero coefficients corresponding to multiple TRPs, thereby ensuring the reliability of communication between the terminal and the network device.
  • FIG. 3 illustrates the position where the terminal can indicate the combination coefficient as an example.
  • the following describes the indication method that the terminal can use for the first indication information.
  • the first indication information is bitmap information, and each bit in the bitmap information is used to indicate whether the coefficient corresponding to the bit is a non-zero coefficient.
  • the bitmap information includes multiple bits, each bit indicating whether the combination coefficient at the corresponding position is a non-zero coefficient.
  • bitmap information is represented by bitmap.
  • bitmap information is represented in other ways.
  • bit when the bit is 0, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 1, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • bit when the bit is 1, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 0, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • a piece of bitmap information is determined according to the configuration information, and the bitmap information indicates the position of the non-zero coefficient among the combined coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are all the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a bitmap information can be configured through The bitmap information can indicate the positions of non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group
  • M n is the number of FD basis vectors of the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • multiple bitmap information is determined according to the configuration information, and each bitmap information indicates at least one TRP group corresponding to The position of the non-zero coefficients in the combined coefficients.
  • S bitmap information is used to indicate, S ⁇ N
  • N is the number of TRP groups used for CJT
  • the size of the bitmap information is 2L n *M n or K n bits, or X*2L n *M n , or X*K n bits, where X indicates that there are X TRP groups corresponding to the number of SD basis vectors or ports, the number of FD basis vectors, and the number of SD and FD basis vector pairs.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group.
  • M n is the number of FD basis vectors of the nth TRP group.
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the first indication information is a combination number, and the combination number has a mapping relationship with the position of the non-zero coefficient.
  • the combination number has a mapping relationship with the positions of the non-zero coefficients, that is, a combination number corresponds to the positions of a group of non-zero coefficients.
  • a combination number is determined according to the configuration information, and the indication information corresponding to the combination number indicates the position of the non-zero coefficient among the combination coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a combination number can be configured, and through this combination The number can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRP groups
  • Y represents the number of the strongest coefficients corresponding to N TRP groups
  • K n is the nth TRP The number of pairs of SD and FD basis vectors of the group.
  • multiple combination numbers are determined according to the configuration information, and each combination number corresponds to the combination coefficient corresponding to at least one TRP group.
  • N is the number of TRP groups used for CJT
  • Z represents the combination coefficient corresponding to X TRP groups
  • K 0,n represents the number of non-zero coefficients corresponding to the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the terminal can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups through different first indication information, which expands the diversity of indicating non-zero coefficients through the first indication information.
  • FIG. 3 illustrates that the terminal can indicate the position of the non-zero coefficient in the combined coefficient through the first indication information.
  • the terminal may also quantize the combination coefficient and then report the quantized combination coefficient.
  • Figure 4 shows a flow chart of a quantization coefficient transmission method provided by an exemplary embodiment of the present application. The example can be applied to the terminal and network equipment shown in Figure 2. The method includes at least part of the following content :
  • Step 401 The terminal quantizes the combined coefficients of multiple TRP groups to obtain the quantized first quantized coefficients.
  • Step 402 The terminal sends the first quantization coefficient to the network device.
  • Step 403 The network device receives the first quantization coefficient sent by the terminal.
  • the terminal after the terminal determines the combination coefficients of multiple TRP groups, it can quantize the determined combination coefficients of the multiple TRP groups to obtain the quantized first quantized coefficients. It can also be understood that when the terminal quantifies the combination coefficients of multiple TRP groups, it means to use other methods to represent the combination coefficients so that the terminal can report the combination coefficients to the network device. That is, the terminal sends the first quantization coefficient to the network device, and the network device receives it. The first quantization coefficient sent by the terminal.
  • the first quantization coefficient is the value of the non-zero coefficient among the combined coefficients, and the network device performs precoding based on the position and value of the non-zero coefficient.
  • Quantization method 1 The terminal normalizes the combined coefficients corresponding to multiple TRP groups to obtain the normalized first normalized coefficient, and then differentially quantizes the obtained first normalized coefficient according to the polarization direction. Get the first quantization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means selecting the largest combination coefficient from the combination coefficients corresponding to multiple TRP groups, and dividing each combination coefficient by the largest combination coefficient to form the first Normalization coefficient.
  • Differential quantization means that for a combination coefficient, the reference amplitude and the difference coefficient are used to jointly indicate the combination coefficient, and the reference amplitude and the difference coefficient are quantized.
  • the terminal normalizes the combination coefficients corresponding to multiple TRP groups to obtain the normalized first normalization coefficient, and then uses the reference amplitude and the difference coefficient to jointly indicate the first normalization coefficient. , and then obtain the first quantized coefficient after quantizing the first normalized coefficient. It can also be understood that the terminal normalizes all corresponding combinations of TRPs in multiple TRP groups, and then obtains the normalized first normalization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means determining the largest combination coefficient among the combination coefficients corresponding to the multiple TRP groups, and dividing each combination coefficient corresponding to the multiple TRP groups by the largest Combine the coefficients to obtain the first normalized coefficient.
  • the polarization direction includes a first polarization direction and a second polarization direction.
  • the terminal performs differential quantization on the first normalized coefficient according to the polarization direction to obtain the first quantized coefficient, which includes: the terminal determines the reference amplitude and corresponding value of each TRP group in the first polarization direction according to the first normalized coefficient.
  • the differential coefficient and the reference amplitude in the second polarization direction and the corresponding differential coefficient, for each TRP group the reference amplitude in the first polarization direction and the corresponding differential coefficient and the reference in the second polarization direction
  • the amplitude and the corresponding difference coefficient are quantized to obtain the first quantization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can perform differential quantization on the first normalized coefficient.
  • the terminal also sends second indication information to the network device, and the second indication information is used to indicate At least one of the maximum reference amplitude or the strongest coefficient will not be reported quantitatively, and the network device will receive the second indication information sent by the terminal.
  • the maximum reference amplitude is the largest reference amplitude among the reference amplitudes included in the first quantization coefficient.
  • the strongest coefficient is the coefficient with the strongest differential coefficient among the first quantized coefficients.
  • one second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient at the same time, or two second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient.
  • the second indication information respectively indicates the maximum reference amplitude and the strongest coefficient.
  • the size of the second indication information used to indicate the maximum reference amplitude is different from the size of the second indication information used to indicate the strongest coefficient. It can also be understood that the second indication information used to indicate the maximum reference amplitude and the second indication information used to indicate the strongest coefficient are two different pieces of information.
  • the second indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude or the strongest coefficient is not to be quantized and reported.
  • the second indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups used for CJT.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the second indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups.
  • the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRP groups
  • L n is the number of SD basis vectors or ports of the nth TRP group
  • K n is the nth
  • M n is the number of FD basis vectors of the nth TRP group.
  • the TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the third codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and multiple The TRP groups have the same reference amplitude in the first polarization direction, and the multiple TRP groups have the same reference amplitude in the second polarization reference direction.
  • the terminal uses the codebook calculation method based on the downlink channel from the two TRPs to the terminal to obtain the combination coefficient matrix corresponding to the two TRPs:
  • r 0 and r 1 represent the reference amplitudes of the first polarization direction and the second polarization direction of the two TRPs respectively. Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • the matrix obtained by normalization is the same as the above example, and for the normalized
  • the coefficients are expressed differentially as:
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP.
  • Reference amplitude for polarization direction Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • Quantification method two The terminal normalizes the combination coefficient corresponding to each TRP group in the multiple TRP groups, obtains the second normalized coefficient and normalized amplitude corresponding to each TRP group, and performs the normalized amplitude Quantize, and perform differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction to obtain the quantized first quantized coefficient.
  • normalizing the combination coefficient corresponding to each TRP group in multiple TRP groups means extracting a normalized amplitude for the combination coefficient corresponding to each TRP group, and then dividing the combination coefficient corresponding to each TRP group.
  • the value obtained with the corresponding normalized amplitude constitutes the second normalized coefficient.
  • the normalized amplitude acquisition method is: extract a target amplitude for the combination coefficient corresponding to each TRP group, the target amplitude is the maximum amplitude included in the combination coefficient corresponding to each TRP group, and then extract from multiple Select the largest target amplitude among the target amplitudes corresponding to the TRP group, and divide the target amplitude corresponding to each TRP group by the largest target amplitude to obtain the normalized amplitude corresponding to each TRP group.
  • Differential quantization means that for a second normalized coefficient, the reference amplitude and the differential coefficient are used to jointly indicate the second normalized coefficient, and the reference amplitude and the differential coefficient are quantized.
  • each TRP group includes one TRP, it means that the normalization is performed for one TRP, and subsequent processes are performed in sequence. If each TRP group includes multiple TRPs, it means that the normalization is performed for multiple TRPs. A TRP group is formed and normalized, and subsequent processes are performed sequentially.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and differentially quantizes the second normalized coefficient corresponding to each TRP group according to the polarization direction.
  • obtaining the quantized first quantized coefficient including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference coefficient and the reference in the second polarization direction according to the second normalization coefficient Amplitude and corresponding differential coefficient; quantify the normalized amplitude, the reference amplitude of each TRP group in the first polarization direction and the corresponding differential coefficient, and the reference amplitude in the second polarization direction and the corresponding differential coefficient. , get the first quantization coefficient.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and performs differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction. , obtaining the quantized first quantized coefficient, including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference according to the second normalized coefficient and the normalized amplitude. coefficients and reference amplitudes in the second polarization direction and corresponding differential coefficients, for each TRP group, reference amplitudes in the first polarization direction and corresponding differential coefficients and in the second polarization The reference amplitude in the direction and the corresponding differential coefficient are quantized to obtain the first quantized coefficient.
  • the reference amplitude includes the product of the initial amplitude of the second normalized coefficient and the normalized amplitude.
  • the initial amplitude refers to the amplitude in the first polarization direction and the amplitude in the second polarization direction of each TRP group determined by the terminal based on the second normalization coefficient, that is, in the first solution above Reference amplitudes in the two polarization directions determined based on the second normalization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can differentially quantize the second normalized coefficient and quantize the normalized amplitude.
  • the terminal also sends third indication information to the network device.
  • the third indication information is also used to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be reported quantitatively.
  • one piece of third indication information may be used to simultaneously indicate the maximum reference amplitude and the maximum normalized amplitude.
  • the strongest coefficient, or the third indication information may also be used to indicate at least two items of the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude.
  • the size of the third indication information used to indicate the maximum reference amplitude, the size of the third indication information used to indicate the strongest coefficient, and the size of the third indication information used to indicate the maximum normalized amplitude are different. It can also be understood that the third indication information used to indicate the maximum reference amplitude, the third indication information used to indicate the strongest coefficient, and the third indication information used to indicate the maximum normalized amplitude are different information.
  • the third indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be quantized and reported.
  • the third indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the third indication information is a combination number, and the combination number indicates the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups. Alternatively, the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRPs used for CJT
  • K 0 represents the number of non-zero coefficients corresponding to a TRP
  • L n is the SD basis vector or number of ports of the nth TRP group
  • K n is the SD sum of the nth TRP
  • M n is the number of FD basis vectors of the nth TRP.
  • the g-th TRP group contains N g TRPs, and the strongest coefficient passes or or K 0,tot,g represents the number of non-zero coefficients included in the g-th TRP group. At this time, the maximum reference amplitude does not need to be reported quantitatively.
  • Maximum normalized amplitude by N bits or instructions, or the network device configures the nth TRP group to correspond to the maximum normalized amplitude.
  • the maximum normalized amplitude does not need to be reported quantitatively.
  • the communication protocol stipulates that the nth TRP group corresponds to the maximum normalized amplitude.
  • a TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the first codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and 2
  • the reference amplitudes of two TRPs in the first polarization direction are different, and the reference amplitudes of the two TRPs in the second polarization reference direction are different.
  • W 2,1 and W 2,2 respectively represent the differential combination coefficient matrices corresponding to the first TRP and the second TRP.
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP reference amplitude.
  • s 0 and s 1 are the target amplitudes corresponding to the first TRP and the second TRP respectively.
  • e 0 t 0 *r 0
  • e 1 t 0 *r 1
  • e 2 t 1 *r 2
  • e 3 t 1 *r 3
  • e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • e3 e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • the combination coefficient is reported to the network device through multiple quantification methods, which expands the way for the terminal to report the position of the non-zero coefficient in the combination coefficient, and is used for the network device to obtain the non-zero coefficient position information corresponding to multiple TRPs. This ensures the reliability of communication between the terminal and network equipment. Moreover, the diversity of ways for terminals to report combination coefficients is expanded.
  • Figure 5 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal shown in Figure 2.
  • the method includes at least part of the following content:
  • Step 501 The terminal receives the configuration information sent by the network device.
  • the network device configures the codebook parameters of multiple TRP groups for the terminal, so that the terminal can determine the codebook parameters corresponding to the TRP group used for communication.
  • Each TRP group includes at least one TRP, that is, the number of TRPs included in the TRP group includes two situations. One is that the TRP group includes one TRP, and the other is that the TRP group includes multiple TRPs.
  • a TRP group if a TRP group includes one TRP, that is, one TRP is called a TRP group.
  • the TRP group may also be called a TRP, which is not limited in the embodiment of this application.
  • the codebook parameters include at least one of the number of SD basis vectors, the number of ports, the number of FD basis vectors, the number of pairs of SD basis vectors and FD basis vectors.
  • Step 502 The terminal determines the first indication information according to the configuration information.
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is a coefficient determined by the terminal according to the codebook parameters of multiple TRP groups, and the combination coefficient Used for network equipment to perform precoding calculations.
  • the terminal after the terminal determines the codebook parameters based on the configuration information sent by the network device, it can determine the first indication information used to indicate the position of the non-zero coefficient in the combination coefficient according to the configured codebook parameters.
  • the combination coefficients sent by the terminal are coefficients determined for multiple TRP groups, and the network device can perform precoding calculations based on the combination coefficients and the codebook structure.
  • Step 503 The terminal sends the first instruction information to the network device.
  • the terminal indicates the combination coefficients corresponding to multiple TRP groups through the first indication information.
  • the network device can determine the combination coefficient for each TRP group generated by the terminal. .
  • This application provides a solution that supports indicating the position of non-zero coefficients in the combined coefficients of multiple TRPs.
  • the terminal determines the position of the non-zero coefficients in the combined coefficients of multiple TRPs based on the codebook parameters of multiple TRPs, extending the terminal.
  • the method of reporting the position of the non-zero coefficients in the combined coefficient is used by the network device to obtain the position information of the non-zero coefficients corresponding to multiple TRPs, thereby ensuring the reliability of communication between the terminal and the network device.
  • the following describes the indication method that the terminal can use for the first indication information.
  • the first indication information is bitmap information, and each bit in the bitmap information is used to indicate whether the coefficient corresponding to the bit is a non-zero coefficient.
  • the bitmap information includes multiple bits, each bit indicating whether the combination coefficient at the corresponding position is a non-zero coefficient.
  • bitmap information is represented by bitmap.
  • bitmap information is represented in other ways.
  • bit when the bit is 0, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 1, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • bit when the bit is 1, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 0, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • a piece of bitmap information is determined according to the configuration information, and the bitmap information indicates the position of the non-zero coefficient among the combined coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are all the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a bitmap information can be configured through The bitmap information can indicate the positions of non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group
  • M n is the number of FD basis vectors of the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • multiple bitmap information is determined according to the configuration information, and each bitmap information indicates at least one TRP group corresponding to The position of the non-zero coefficients in the combined coefficients.
  • S bitmap information is used to indicate, S ⁇ N
  • N is the number of TRP groups used for CJT
  • the size of the bitmap information is 2L n *M n or K n bits, or X*2L n *M n , or X*K n bits, where X indicates that there are X TRP groups corresponding to the number of SD basis vectors or ports, the number of FD basis vectors, and the number of SD and FD basis vector pairs.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group.
  • M n is the number of FD basis vectors of the nth TRP group.
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the first indication information is a combination number, and the combination number has a mapping relationship with the position of the non-zero coefficient.
  • the combination number has a mapping relationship with the positions of the non-zero coefficients, that is, a combination number corresponds to the positions of a group of non-zero coefficients.
  • a combination number is determined according to the configuration information, and the indication information corresponding to the combination number indicates the position of the non-zero coefficient among the combination coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a combination number can be configured, and through this combination The number can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRPs
  • Y represents the number of the strongest coefficients corresponding to N TRP groups
  • K n is the nth TRP group.
  • multiple combination numbers are determined according to the configuration information, and each combination number corresponds to the combination coefficient corresponding to at least one TRP group.
  • N is the number of TRP groups used for CJT
  • Z represents the combination coefficient corresponding to X TRP groups
  • K 0,n represents the number of non-zero coefficients corresponding to the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the terminal can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups through different first indication information, which expands the diversity of indicating non-zero coefficients through the first indication information.
  • the terminal quantizes the combined coefficients of multiple TRP groups to obtain a quantized first quantized coefficient, and the terminal sends the first quantized coefficient to the network device.
  • the terminal after the terminal determines the combination coefficients of multiple TRP groups, it can quantize the determined combination coefficients of the multiple TRP groups to obtain the quantized first quantized coefficients. It can also be understood that when the terminal quantifies the combination coefficients of multiple TRP groups, it means to use other methods to represent the combination coefficients so that the terminal can report the combination coefficients to the network device. That is, the terminal sends the first quantization coefficient to the network device, and the network device receives it. The first quantization coefficient sent by the terminal.
  • Quantization method 1 The terminal normalizes the combined coefficients corresponding to multiple TRP groups to obtain the normalized first normalized coefficient, and then differentially quantizes the obtained first normalized coefficient according to the polarization direction. Get the first quantization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means selecting the largest combination coefficient from the combination coefficients corresponding to multiple TRP groups, and dividing each combination coefficient by the largest combination coefficient to form the first Normalization coefficient.
  • Differential quantization means that for a combination coefficient, the reference amplitude and the difference coefficient are used to jointly indicate the combination coefficient, and the reference amplitude and the difference coefficient are quantized.
  • the terminal normalizes the combination coefficients corresponding to multiple TRP groups to obtain the normalized first normalization coefficient, and then uses the reference amplitude and the difference coefficient to jointly indicate the first normalization coefficient. , and then obtain the first quantized coefficient after quantizing the first normalized coefficient. It can also be understood that the terminal normalizes all corresponding combinations of TRPs in multiple TRP groups, and then obtains the normalized first normalization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means determining the largest combination coefficient among the combination coefficients corresponding to the multiple TRP groups, and dividing each combination coefficient corresponding to the multiple TRP groups by the largest Combine the coefficients to obtain the first normalized coefficient.
  • the polarization direction includes a first polarization direction and a second polarization direction.
  • the terminal performs differential quantization on the first normalized coefficient according to the polarization direction to obtain the first quantized coefficient, which includes: the terminal determines the reference amplitude and corresponding value of each TRP group in the first polarization direction according to the first normalized coefficient.
  • the differential coefficient and the reference amplitude in the second polarization direction and the corresponding differential coefficient, for each TRP group the reference amplitude in the first polarization direction and the corresponding differential coefficient and the reference in the second polarization direction
  • the amplitude and the corresponding difference coefficient are quantized to obtain the first quantization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can perform differential quantization on the first normalized coefficient.
  • the terminal also sends second indication information to the network device, and the second indication information is used to indicate At least one of the maximum reference amplitude or the strongest coefficient will not be reported quantitatively, and the network device will receive the second indication information sent by the terminal.
  • the maximum reference amplitude is the largest reference amplitude among the reference amplitudes included in the first quantization coefficient.
  • the strongest coefficient is the coefficient with the strongest differential coefficient among the first quantized coefficients.
  • one second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient at the same time, or two second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient.
  • the second indication information respectively indicates the maximum reference amplitude and the strongest coefficient.
  • the size of the second indication information used to indicate the maximum reference amplitude is different from the size of the second indication information used to indicate the strongest coefficient. It can also be understood that the second indication information used to indicate the maximum reference amplitude and the second indication information used to indicate the strongest coefficient are two different pieces of information.
  • the second indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude or the strongest coefficient is not to be quantized and reported.
  • the second indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups used for CJT.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the second indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups.
  • the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRP groups
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • M n is the number of FD basis vectors of the nth TRP group.
  • the TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the third codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and multiple The TRP groups have the same reference amplitude in the first polarization direction, and the multiple TRP groups have the same reference amplitude in the second polarization reference direction.
  • the terminal uses the codebook calculation method based on the downlink channel from the two TRPs to the terminal to obtain the combination coefficient matrix corresponding to the two TRPs:
  • r 0 and r 1 represent the reference amplitudes of the first polarization direction and the second polarization direction of the two TRPs respectively. Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • the matrix obtained by normalization is the same as the above example, and for the normalized
  • the coefficients are expressed differentially as:
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP.
  • Reference amplitude for polarization direction Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • Quantification method two The terminal normalizes the combination coefficient corresponding to each TRP group in the multiple TRP groups, obtains the second normalized coefficient and normalized amplitude corresponding to each TRP group, and performs the normalized amplitude Quantize, and perform differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction to obtain the quantized first quantized coefficient.
  • normalizing the combination coefficient corresponding to each TRP group in multiple TRP groups means extracting a normalized amplitude for the combination coefficient corresponding to each TRP group, and then dividing the combination coefficient corresponding to each TRP group.
  • the value obtained with the corresponding normalized amplitude constitutes the second normalized coefficient.
  • the normalized amplitude acquisition method is: extract a target amplitude for the combination coefficient corresponding to each TRP group, the target amplitude is the maximum amplitude included in the combination coefficient corresponding to each TRP group, and then extract from multiple Select the largest target amplitude among the target amplitudes corresponding to the TRP group, and divide the target amplitude corresponding to each TRP group by the largest target amplitude to obtain the normalized amplitude corresponding to each TRP group.
  • Differential quantization means that for a second normalized coefficient, the reference amplitude and the differential coefficient are used to jointly indicate the second normalized coefficient, and the reference amplitude and the differential coefficient are quantized.
  • each TRP group includes one TRP, it means that the normalization is performed for one TRP, and subsequent processes are performed in sequence. If each TRP group includes multiple TRPs, it means that the normalization is performed for multiple TRPs. A TRP group is formed and normalized, and subsequent processes are performed sequentially.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and differentially quantizes the second normalized coefficient corresponding to each TRP group according to the polarization direction.
  • obtaining the quantized first quantized coefficient including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference coefficient and the reference in the second polarization direction according to the second normalization coefficient Amplitude and corresponding differential coefficient; quantify the normalized amplitude, the reference amplitude of each TRP group in the first polarization direction and the corresponding differential coefficient, and the reference amplitude in the second polarization direction and the corresponding differential coefficient. , get the first quantization coefficient.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and performs differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction. , obtaining the quantized first quantized coefficient, including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference according to the second normalized coefficient and the normalized amplitude. coefficients and reference amplitudes in the second polarization direction and corresponding differential coefficients, for each TRP group, reference amplitudes in the first polarization direction and corresponding differential coefficients and in the second polarization The reference amplitude in the direction and the corresponding differential coefficient are quantized to obtain the first quantized coefficient.
  • the reference amplitude includes the product of the initial amplitude of the second normalized coefficient and the normalized amplitude.
  • the initial amplitude refers to the amplitude in the first polarization direction and the amplitude in the second polarization direction of each TRP group determined by the terminal based on the second normalization coefficient, that is, in the first solution above Reference amplitudes in the two polarization directions determined based on the second normalization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can differentially quantize the second normalized coefficient and quantize the normalized amplitude.
  • the terminal also sends third indication information to the network device.
  • the third indication information is also used to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be reported quantitatively.
  • one piece of third indication information may be used to simultaneously indicate the maximum reference amplitude and the maximum normalized amplitude.
  • the strongest coefficient, or the third indication information may also be used to indicate at least two items of the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude.
  • the size of the third indication information used to indicate the maximum reference amplitude, the size of the third indication information used to indicate the strongest coefficient, and the size of the third indication information used to indicate the maximum normalized amplitude are different. It can also be understood that the third indication information used to indicate the maximum reference amplitude, the third indication information used to indicate the strongest coefficient, and the third indication information used to indicate the maximum normalized amplitude are different information.
  • the third indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be quantized and reported.
  • the third indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the third indication information is a combination number, and the combination number indicates the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups. Alternatively, the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRPs used for CJT
  • K 0 represents the number of non-zero coefficients corresponding to a TRP
  • L n is the SD basis vector or number of ports of the nth TRP group
  • K n is the SD sum of the nth TRP
  • M n is the number of FD basis vectors of the nth TRP.
  • the g-th TRP group contains N g TRPs, and the strongest coefficient passes or or K 0,tot,g represents the number of non-zero coefficients included in the g-th TRP group. At this time, the maximum reference amplitude does not need to be reported quantitatively.
  • Maximum normalized amplitude by N bits or instructions, or the network device configures the nth TRP group to correspond to the maximum normalized amplitude.
  • the maximum normalized amplitude does not need to be reported quantitatively.
  • the communication protocol stipulates that the nth TRP group corresponds to the maximum normalized amplitude.
  • a TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the first codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and 2
  • the reference amplitudes of two TRPs in the first polarization direction are different, and the reference amplitudes of the two TRPs in the second polarization reference direction are different.
  • W 2,1 and W 2,2 respectively represent the differential combination coefficient matrices corresponding to the first TRP and the second TRP.
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP reference amplitude.
  • s 0 and s 1 are the target amplitudes corresponding to the first TRP and the second TRP respectively.
  • e 0 t 0 *r 0
  • e 1 t 0 *r 1
  • e 2 t 1 *r 2
  • e 3 t 1 *r 3
  • e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • e3 e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • the combination coefficient is reported to the network device through multiple quantification methods, which expands the way for the terminal to report the position of the non-zero coefficient in the combination coefficient, and is used for the network device to obtain the non-zero coefficient position information corresponding to multiple TRPs. This ensures the reliability of communication between the terminal and network equipment. Moreover, the diversity of ways for terminals to report combination coefficients is expanded.
  • Figure 6 shows a flow chart of a coefficient indication method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the network device shown in Figure 2.
  • the method includes at least part of the following content:
  • Step 601 The network device sends configuration information to the terminal.
  • the configuration information is used to configure codebook parameters of multiple TRP groups.
  • Each TRP group includes at least one TRP.
  • the network device configures the codebook parameters of multiple TRP groups for the terminal, so that the terminal can determine the codebook parameters corresponding to the TRP group used for communication.
  • Each TRP group includes at least one TRP, that is, the number of TRPs included in the TRP group includes two situations. One is that the TRP group includes one TRP, and the other is that the TRP group includes multiple TRPs.
  • a TRP group if a TRP group includes one TRP, that is, one TRP is called a TRP group.
  • the TRP group may also be called a TRP, which is not limited in the embodiment of this application.
  • the codebook parameters include at least one of the number of SD basis vectors, the number of ports, the number of FD basis vectors, the number of pairs of SD basis vectors and FD basis vectors.
  • Step 602 The network device receives the first indication information sent by the terminal.
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is a coefficient determined by the terminal based on the codebook parameters of multiple TRP groups, and the combination coefficient Used for network equipment to perform precoding calculations.
  • the terminal indicates the combination coefficients corresponding to multiple TRP groups through the first indication information.
  • the network device can determine the combination coefficient for each TRP group generated by the terminal. .
  • This application provides a solution that supports indicating the position of non-zero coefficients in the combined coefficients of multiple TRPs.
  • the terminal determines the position of the non-zero coefficients in the combined coefficients of multiple TRPs based on the codebook parameters of multiple TRPs, extending the terminal.
  • the method of reporting the position of the non-zero coefficients in the combined coefficient is used by the network device to obtain the position information of the non-zero coefficients corresponding to multiple TRPs, thereby ensuring the reliability of communication between the terminal and the network device.
  • the first indication information is bitmap information, and each bit in the bitmap information is used to indicate whether the coefficient corresponding to the bit is a non-zero coefficient.
  • the bitmap information includes multiple bits, each bit indicating whether the combination coefficient at the corresponding position is a non-zero coefficient.
  • bitmap information is represented by bitmap.
  • bitmap information is represented in other ways.
  • bit when the bit is 0, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 1, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • bit when the bit is 1, it means that the combination coefficient corresponding to the bit is a non-zero coefficient; when the bit is 0, it means that the combination coefficient corresponding to the bit is not a non-zero coefficient.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • a piece of bitmap information is determined according to the configuration information, and the bitmap information indicates the position of the non-zero coefficient among the combined coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are all the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a bitmap information can be configured through The bitmap information can indicate the positions of non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group
  • M n is the number of FD basis vectors of the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • multiple bitmap information is determined according to the configuration information, and each bitmap information indicates at least one TRP group corresponding to The position of the non-zero coefficients in the combined coefficients.
  • S bitmap information is used to indicate, S ⁇ N
  • N is the number of TRP groups used for CJT
  • the size of the bitmap information is 2L n *M n or K n bits, or X*2L n *M n , or X*K n bits, where X indicates that there are X TRP groups corresponding to the number of SD basis vectors or ports, the number of FD basis vectors, and the number of SD and FD basis vector pairs.
  • N is the number of TRP groups used for CJT
  • Ln is the SD basis vector or number of ports of the nth TRP group.
  • M n is the number of FD basis vectors of the nth TRP group.
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the first indication information is a combination number, and the combination number has a mapping relationship with the position of the non-zero coefficient.
  • the combination number has a mapping relationship with the positions of the non-zero coefficients, that is, a combination number corresponds to the positions of a group of non-zero coefficients.
  • a combination number is determined according to the configuration information, and the indication information corresponding to the combination number indicates the position of the non-zero coefficient among the combination coefficients corresponding to the multiple TRP groups.
  • the codebook parameters of multiple TRP groups configured by the network device for the terminal are the same, that is to say, the codebook parameters corresponding to each TRP are the same.
  • a combination number can be configured, and through this combination The number can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups.
  • the size of the first indication information in the embodiment of the present application is determined according to the codebook parameters.
  • the terminal may determine the size of the first indication information based on the number of SD basis vectors or ports and the number of FD basis vectors, or determine the size of the first indication information based on the number of pairs of SD and FD basis vectors, or The embodiments of this application do not limit the use of other methods to determine the size of the first indication information.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRPs
  • Y represents the number of the strongest coefficients corresponding to N TRP groups
  • K n is the nth TRP group.
  • multiple combination numbers are determined according to the configuration information, and each combination number corresponds to the combination coefficient corresponding to at least one TRP group.
  • N is the number of TRP groups used for CJT
  • Z represents the combination coefficient corresponding to X TRP groups
  • K 0,n represents the number of non-zero coefficients corresponding to the nth TRP group
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • the terminal can indicate the position of the non-zero coefficients in the combined coefficients corresponding to multiple TRP groups through different first indication information, which expands the diversity of indicating non-zero coefficients through the first indication information.
  • the network device receives the first quantization coefficient sent by the terminal.
  • the terminal after the terminal determines the combination coefficients of multiple TRP groups, it can quantize the determined combination coefficients of the multiple TRP groups to obtain the quantized first quantized coefficients. It can also be understood that when the terminal quantifies the combination coefficients of multiple TRP groups, it means to use other methods to represent the combination coefficients so that the terminal can report the combination coefficients to the network device. That is, the terminal sends the first quantization coefficient to the network device, and the network device receives it. The first quantization coefficient sent by the terminal.
  • Quantization method 1 The terminal normalizes the combined coefficients corresponding to multiple TRP groups to obtain the normalized first normalized coefficient, and then differentially quantizes the obtained first normalized coefficient according to the polarization direction. Get the first quantization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means selecting the largest combination coefficient from the combination coefficients corresponding to multiple TRP groups, and dividing each combination coefficient by the largest combination coefficient to form the first Normalization coefficient.
  • Differential quantization means that for a combination coefficient, the reference amplitude and the difference coefficient are used to jointly indicate the combination coefficient, and the reference amplitude and the difference coefficient are quantized.
  • the terminal normalizes the combination coefficients corresponding to multiple TRP groups to obtain the normalized first normalization coefficient, and then uses the reference amplitude and the difference coefficient to jointly indicate the first normalization coefficient. , and then obtain the first quantized coefficient after quantizing the first normalized coefficient. It can also be understood that the terminal normalizes all corresponding combinations of TRPs in multiple TRP groups, and then obtains the normalized first normalization coefficient.
  • normalizing the combination coefficients corresponding to multiple TRP groups means determining the largest combination coefficient among the combination coefficients corresponding to the multiple TRP groups, and dividing each combination coefficient corresponding to the multiple TRP groups by the largest Combine the coefficients to obtain the first normalized coefficient.
  • the polarization direction includes a first polarization direction and a second polarization direction.
  • the terminal performs differential quantization on the first normalized coefficient according to the polarization direction to obtain the first quantized coefficient, which includes: the terminal determines the reference amplitude and corresponding value of each TRP group in the first polarization direction according to the first normalized coefficient.
  • the differential coefficient and the reference amplitude in the second polarization direction and the corresponding differential coefficient, for each TRP group the reference amplitude in the first polarization direction and the corresponding differential coefficient and the reference in the second polarization direction
  • the amplitude and the corresponding difference coefficient are quantized to obtain the first quantization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can perform differential quantization on the first normalized coefficient.
  • the terminal also sends second indication information to the network device, and the second indication information is used to indicate At least one of the maximum reference amplitude or the strongest coefficient will not be reported quantitatively, and the network device will receive the second indication information sent by the terminal.
  • the maximum reference amplitude is the largest reference amplitude among the reference amplitudes included in the first quantization coefficient.
  • the strongest coefficient is the coefficient with the strongest differential coefficient among the first quantized coefficients.
  • one second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient at the same time, or two second indication information may be used to indicate the maximum reference amplitude and the strongest coefficient.
  • the second indication information respectively indicates the maximum reference amplitude and the strongest coefficient.
  • the size of the second indication information used to indicate the maximum reference amplitude is different from the size of the second indication information used to indicate the strongest coefficient. It can also be understood that the second indication information used to indicate the maximum reference amplitude and the second indication information used to indicate the strongest coefficient are two different pieces of information.
  • the second indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude or the strongest coefficient is not to be quantized and reported.
  • the second indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups used for CJT.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the second indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups.
  • the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRP groups used for CJT
  • K 0,tot represents the number of non-zero coefficients corresponding to all TRP groups
  • K n is the number of SD and FD basis vector pairs of the nth TRP group.
  • M n is the number of FD basis vectors of the nth TRP group.
  • the TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the third codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and multiple The TRP groups have the same reference amplitude in the first polarization direction, and the multiple TRP groups have the same reference amplitude in the second polarization reference direction.
  • the terminal uses the codebook calculation method based on the downlink channel from the two TRPs to the terminal to obtain the combination coefficient matrix corresponding to the two TRPs:
  • r 0 and r 1 represent the reference amplitudes of the first polarization direction and the second polarization direction of the two TRPs respectively. Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • the matrix obtained by normalization is the same as the above example, and for the normalized
  • the coefficients are expressed differentially as:
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP.
  • Reference amplitude for polarization direction Indicates the differential coefficient of the l-th row and m-column in the combined coefficient matrix in the p-th polarization direction corresponding to the n-th TRP.
  • Quantification method two The terminal normalizes the combination coefficient corresponding to each TRP group in the multiple TRP groups, obtains the second normalized coefficient and normalized amplitude corresponding to each TRP group, and performs the normalized amplitude Quantize, and perform differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction to obtain the quantized first quantized coefficient.
  • normalizing the combination coefficient corresponding to each TRP group in multiple TRP groups means extracting a normalized amplitude for the combination coefficient corresponding to each TRP group, and then dividing the combination coefficient corresponding to each TRP group.
  • the value obtained with the corresponding normalized amplitude constitutes the second normalized coefficient.
  • the normalized amplitude acquisition method is: extract a target amplitude for the combination coefficient corresponding to each TRP group, the target amplitude is the maximum amplitude included in the combination coefficient corresponding to each TRP group, and then extract from multiple Select the largest target amplitude among the target amplitudes corresponding to the TRP group, and divide the target amplitude corresponding to each TRP group by the largest target amplitude to obtain the normalized amplitude corresponding to each TRP group.
  • Differential quantization means that for a second normalized coefficient, the reference amplitude and the differential coefficient are used to jointly indicate the second normalized coefficient, and the reference amplitude and the differential coefficient are quantized.
  • each TRP group includes one TRP, it means that the normalization is performed for one TRP, and subsequent processes are performed in sequence. If each TRP group includes multiple TRPs, it means that the normalization is performed for multiple TRPs. A TRP group is formed and normalized, and subsequent processes are performed sequentially.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and differentially quantizes the second normalized coefficient corresponding to each TRP group according to the polarization direction.
  • obtaining the quantized first quantized coefficient including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference coefficient and the reference in the second polarization direction according to the second normalization coefficient Amplitude and corresponding differential coefficient; quantify the normalized amplitude, the reference amplitude of each TRP group in the first polarization direction and the corresponding differential coefficient, and the reference amplitude in the second polarization direction and the corresponding differential coefficient. , get the first quantization coefficient.
  • the polarization direction includes the first polarization direction and the second polarization direction.
  • the terminal quantizes the normalized amplitude and performs differential quantization on the second normalized coefficient corresponding to each TRP group according to the polarization direction. , obtaining the quantized first quantized coefficient, including: determining the reference amplitude of each TRP group in the first polarization direction and the corresponding difference according to the second normalized coefficient and the normalized amplitude. coefficients and reference amplitudes in the second polarization direction and corresponding differential coefficients, for each TRP group, reference amplitudes in the first polarization direction and corresponding differential coefficients and in the second polarization The reference amplitude in the direction and the corresponding differential coefficient are quantized to obtain the first quantized coefficient.
  • the reference amplitude includes the product of the initial amplitude of the second normalized coefficient and the normalized amplitude.
  • the initial amplitude refers to the amplitude in the first polarization direction and the amplitude in the second polarization direction of each TRP group determined by the terminal based on the second normalization coefficient, that is, in the first solution above Reference amplitudes in the two polarization directions determined based on the second normalization coefficient.
  • the reference amplitude of the TRP group in the first polarization direction and the reference amplitude in the second polarization direction include various situations.
  • Type 1 The reference amplitudes of multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of multiple TRP groups in the second polarization reference direction are the same.
  • the second type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, and at least two TRP groups among multiple TRP groups have different reference amplitudes in the second polarization reference direction, each The reference amplitudes of the first polarization directions of the multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization directions are the same or different.
  • the third type at least two TRP groups among multiple TRP groups have different reference amplitudes in the first polarization direction, multiple TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP group includes The reference amplitudes of the first polarization directions of the multiple TRPs are the same or different.
  • the fourth type multiple TRP groups have the same reference amplitude in the first polarization direction, and at least two TRP groups among the multiple TRP groups have different reference amplitudes in the second polarization reference direction.
  • Each TRP group includes The reference amplitudes of the second polarization directions of multiple TRPs are the same or different.
  • the terminal can differentially quantize the second normalized coefficient and quantize the normalized amplitude.
  • the terminal also sends third indication information to the network device.
  • the third indication information is also used to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be reported quantitatively.
  • one piece of third indication information may be used to simultaneously indicate the maximum reference amplitude and the maximum normalized amplitude.
  • the strongest coefficient, or the third indication information may also be used to indicate at least two items of the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude.
  • the size of the third indication information used to indicate the maximum reference amplitude, the size of the third indication information used to indicate the strongest coefficient, and the size of the third indication information used to indicate the maximum normalized amplitude are different. It can also be understood that the third indication information used to indicate the maximum reference amplitude, the third indication information used to indicate the strongest coefficient, and the third indication information used to indicate the maximum normalized amplitude are different information.
  • the third indication information may use bitmap information or a combination number to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be quantized and reported.
  • the third indication information is bitmap information, and each bit in the bitmap information is used to indicate the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of the TRP group corresponding to the bit.
  • the codebook parameters corresponding to each TRP group are the same, and N-bit bitmap information is used to indicate the position of the maximum reference amplitude.
  • N is the number of TRP groups.
  • N*2L n *M n bits or N*K n bits are used to indicate the position of the strongest coefficient.
  • the third indication information is a combination number, and the combination number indicates the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of each TRP group.
  • the combination number takes bits to indicate the maximum reference amplitude.
  • N is the number of TRP groups. Alternatively, the number of combinations can be or or or to indicate the position of the strongest coefficient.
  • N is the number of TRPs used for CJT
  • K 0 represents the number of non-zero coefficients corresponding to a TRP
  • L n is the SD basis vector or number of ports of the nth TRP group
  • K n is the SD sum of the nth TRP
  • M n is the number of FD basis vectors of the nth TRP.
  • the g-th TRP group contains N g TRPs, and the strongest coefficient passes or or K 0,tot,g represents the number of non-zero coefficients included in the g-th TRP group. At this time, the maximum reference amplitude does not need to be reported quantitatively.
  • the g-th TRP group contains N g TRPs, and the strongest coefficient passes or or K 0,tot,g represents the number of non-zero coefficients included in the g-th TRP group. At this time, the maximum reference amplitude does not need to be reported quantitatively.
  • Maximum normalized amplitude by N bits or instructions, or the network device configures the nth TRP group to correspond to the maximum normalized amplitude.
  • the maximum normalized amplitude does not need to be reported quantitatively.
  • the communication protocol stipulates that the nth TRP group corresponds to the maximum normalized amplitude.
  • a TRP group includes one TRP
  • this application involves two TRPs serving one terminal through CJT.
  • the first codebook structure in the above embodiment is used between the terminal and the network device to calculate the precoding for data transmission, and 2
  • the reference amplitudes of two TRPs in the first polarization direction are different, and the reference amplitudes of the two TRPs in the second polarization reference direction are different.
  • W 2,1 and W 2,2 respectively represent the differential combination coefficient matrices corresponding to the first TRP and the second TRP.
  • r 0 and r 1 respectively represent the reference amplitudes of the first polarization direction and the second polarization direction of the first TRP
  • r 2 and r 3 respectively represent the first polarization direction and the second polarization direction of the second TRP reference amplitude.
  • s 0 and s 1 are the target amplitudes corresponding to the first TRP and the second TRP respectively.
  • e 0 t 0 *r 0
  • e 1 t 0 *r 1
  • e 2 t 1 *r 2
  • e 3 t 1 *r 3
  • e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • e3 e 0 and e 1 , e 2 are quantized by 4bits respectively.
  • the combination coefficient is reported to the network device through multiple quantification methods, which expands the way for the terminal to report the position of the non-zero coefficient in the combination coefficient, and is used for the network device to obtain the non-zero coefficient position information corresponding to multiple TRPs. This ensures the reliability of communication between the terminal and network equipment. Moreover, the diversity of ways for terminals to report combination coefficients is expanded.
  • Figure 7 shows a block diagram of a coefficient indicating device provided by an exemplary embodiment of the present application.
  • the device includes:
  • the receiving module 701 is configured to receive configuration information sent by the network device, where the configuration information is used to configure codebook parameters of multiple TRP groups, and each TRP group includes at least one TRP;
  • Determining module 702 configured to determine first indication information according to the configuration information.
  • the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient.
  • the combination coefficient is the terminal according to the plurality of TRPs.
  • the coefficients determined by the group of codebook parameters, and the combined coefficients are used by the network device to perform precoding calculations;
  • the sending module 703 is configured to send the first indication information to the network device.
  • the first indication information is bitmap information, and each bit in the bitmap information is used to indicate whether the coefficient corresponding to the bit is a non-zero coefficient;
  • the first indication information is a combination number, and the combination number has a mapping relationship with the position of the non-zero coefficient.
  • the determining module 702 is also used to:
  • bitmap information is determined according to the configuration information, and the bitmap information indicates the position of the non-zero coefficient among the combination coefficients corresponding to the multiple TRP groups.
  • multiple bitmap information is determined according to the configuration information, and each bitmap information indicates at least one TRP group corresponding to The position of the non-zero coefficients in the combined coefficients.
  • the determining module 702 is also used to:
  • a combination number is determined according to the configuration information, and the indication information corresponding to the combination number indicates the non-zero coefficients among the combination coefficients corresponding to the multiple TRP groups.
  • multiple combination numbers are determined according to the configuration information, and each combination number corresponds to a combination coefficient corresponding to at least one TRP group. The position of the non-zero coefficient in .
  • the size of the first indication information is determined according to the codebook parameters.
  • the codebook parameters include at least one of the number of SD basis vectors, the number of ports, the number of FD basis vectors, the number of pairs of SD basis vectors and FD basis vectors.
  • the device further includes:
  • the quantization module 704 is used to quantize the combined coefficients of the multiple TRP groups to obtain the quantized first quantized coefficients
  • Sending module 703, configured to send the first quantization coefficient to the network device.
  • the quantization module 704 is also used to:
  • the first normalized coefficient is differentially quantized according to the polarization direction to obtain the first quantized coefficient.
  • the polarization direction includes a first polarization direction and a second polarization direction
  • the quantization module 704 is also used to:
  • the first normalization coefficient determine the reference amplitude and the corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and the corresponding differential coefficient in the second polarization direction.
  • the reference amplitude and the corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and the corresponding differential coefficient in the second polarization direction are quantized to obtain the first Quantization coefficient.
  • the device further includes:
  • Sending module 703, configured to send second indication information to the network device
  • the second indication information is used to indicate that at least one of the maximum reference amplitude or the strongest coefficient is not to be reported in quantization.
  • the second indication information is bitmap information, and each bit in the bitmap information is used to indicate at least one of the maximum reference amplitude or the strongest coefficient of the TRP group corresponding to the bit. Location;
  • the second indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of each TRP group.
  • the quantization module 704 is also used to:
  • the normalized amplitude is quantized, and the second normalized coefficient corresponding to each TRP group is differentially quantized according to the polarization direction to obtain the quantized first quantized coefficient.
  • the polarization direction includes a first polarization direction and a second polarization direction
  • the quantization module 704 is also used to:
  • the second normalization coefficient determine the reference amplitude and corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and corresponding differential coefficient in the second polarization direction; for The normalized amplitude, the reference amplitude of each TRP group in the first polarization direction and the corresponding differential coefficient and the reference amplitude in the second polarization direction and the corresponding differential coefficient are quantized to obtain The first quantization coefficient;
  • the reference amplitude and the corresponding differential coefficient of each TRP group in the first polarization direction and the second polarization direction are determined.
  • Reference amplitude and corresponding differential coefficient quantify the reference amplitude and corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and corresponding differential coefficient in the second polarization direction , the first quantized coefficient is obtained, and the reference amplitude includes the product of the initial amplitude of the second normalized coefficient and the normalized amplitude.
  • the device further includes:
  • Sending module 703, configured to send third indication information to the network device
  • the third indication information is used to indicate that at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude is not to be reported quantitatively.
  • the third indication information is bitmap information, and each bit in the bitmap information is used to indicate the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude of the TRP group corresponding to the bit. The position of at least one of the
  • the third indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude, the strongest coefficient, or the maximum normalized amplitude of each TRP group.
  • the reference amplitudes of the multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of the multiple TRP groups in the second polarization reference direction are the same;
  • the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the first polarization direction are different, and the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the second polarization reference direction are different.
  • the amplitudes are different.
  • the reference amplitudes of the first polarization direction of multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization direction are the same or different;
  • At least two of the plurality of TRP groups have different reference amplitudes in the first polarization direction, and the plurality of TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP
  • the reference amplitudes of the first polarization directions of the multiple TRPs included in the group are the same or different;
  • the reference amplitudes of the plurality of TRP groups in the first polarization direction are the same, and the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the second polarization reference direction are different, and each TRP The reference amplitudes of the second polarization directions of the multiple TRPs included in the group are the same or different.
  • Figure 9 shows a block diagram of a coefficient indicating device provided by an exemplary embodiment of the present application.
  • the device includes:
  • Sending module 901 configured to send configuration information to the terminal, where the configuration information is used to configure codebook parameters of multiple TRP groups, and each TRP group includes at least one TRP;
  • the receiving module 902 is configured to receive the first indication information sent by the terminal, the first indication information is determined by the terminal according to the configuration information, and the first indication information is used to indicate the position of the non-zero coefficient in the combination coefficient,
  • the combination coefficient is a coefficient determined by the terminal according to the codebook parameters of the multiple TRP groups, and the combination coefficient is used by the network device to perform precoding calculations.
  • the first indication information is bitmap information, and each bit in the bitmap information is used to indicate whether the coefficient corresponding to the bit is a non-zero coefficient;
  • the first indication information is a combination number, and the combination number has a mapping relationship with the position of the non-zero coefficient.
  • the size of the first indication information is determined according to the codebook parameters.
  • the codebook parameters include at least one of the number of SD basis vectors, the number of ports, the number of FD basis vectors, the number of pairs of SD basis vectors and FD basis vectors.
  • the receiving module 902 is also configured to receive the first quantization coefficient sent by the terminal, where the first quantization coefficient is obtained by the terminal quantizing the combined coefficients of the multiple TRP groups.
  • the first quantization coefficient is normalized by the terminal on the combined coefficients corresponding to the multiple TRP groups to obtain a normalized first normalization coefficient, which is calculated according to the polarization direction.
  • the first normalized coefficient is obtained by differential quantization.
  • the polarization direction includes a first polarization direction and a second polarization direction
  • the first quantization coefficient is determined by the terminal according to the first normalization coefficient for each TRP group.
  • the reference amplitude and the corresponding differential coefficient in the first polarization direction and the reference amplitude and the corresponding differential coefficient in the second polarization direction, for each TRP group in the first polarization direction The reference amplitude and the corresponding differential coefficient on and the reference amplitude and the corresponding differential coefficient in the second polarization direction are obtained by quantization.
  • the receiving module 902 is also configured to receive second indication information sent by the terminal, where the second indication information is used to indicate that at least one of the maximum reference amplitude or the strongest coefficient is not to be quantized. Report.
  • the second indication information is bitmap information, and each bit in the bitmap information is used to indicate at least one of the maximum reference amplitude or the strongest coefficient of the TRP group corresponding to the bit. Location;
  • the second indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude or the strongest coefficient of each TRP group.
  • the first quantization coefficient is normalized by the terminal to a combination coefficient corresponding to each TRP group in multiple TRP groups to obtain a second normalization coefficient corresponding to each TRP group and
  • the normalized amplitude is obtained by quantizing the normalized amplitude and differentially quantizing the second normalized coefficient corresponding to each TRP group according to the polarization direction.
  • the polarization direction includes a first polarization direction and a second polarization direction
  • the first quantization coefficient is determined by the terminal according to the second normalization coefficient for each TRP group.
  • the reference amplitude and the corresponding difference coefficient in the polarization direction and the reference amplitude and the corresponding difference coefficient in the second polarization direction are quantized, or the first quantization coefficient is obtained by the terminal according to the first
  • Two normalization coefficients and the normalized amplitude are used to determine the reference amplitude and corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and corresponding difference in the second polarization direction.
  • the differential coefficient is obtained by quantizing the reference amplitude and corresponding differential coefficient of each TRP group in the first polarization direction and the reference amplitude and corresponding differential coefficient in the second polarization direction.
  • the reference amplitude includes the product of the initial amplitude of the second normalization coefficient and the normalized amplitude.
  • the receiving module 902 is further configured to receive third indication information sent by the terminal, where the third indication information is used to indicate the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude. At least one item will not be reported quantitatively.
  • the third indication information is bitmap information, and each bit in the bitmap information is used to indicate the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude of the TRP group corresponding to the bit. The position of at least one of the
  • the third indication information is a combination number, and the combination number is used to indicate the position of at least one of the maximum reference amplitude, the strongest coefficient or the maximum normalized amplitude of each TRP group.
  • the reference amplitudes of the multiple TRP groups in the first polarization direction are the same, and the reference amplitudes of the multiple TRP groups in the second polarization reference direction are the same;
  • the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the first polarization direction are different, and the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the second polarization reference direction are different.
  • the amplitudes are different.
  • the reference amplitudes of the first polarization direction of multiple TRPs included in each TRP group are the same or different, and the reference amplitudes of the second polarization direction are the same or different;
  • At least two of the plurality of TRP groups have different reference amplitudes in the first polarization direction, and the plurality of TRP groups have the same reference amplitude in the second polarization reference direction, and each TRP
  • the reference amplitudes of the first polarization directions of the multiple TRPs included in the group are the same or different;
  • the reference amplitudes of the plurality of TRP groups in the first polarization direction are the same, and the reference amplitudes of at least two TRP groups among the plurality of TRP groups in the second polarization reference direction are different, and each TRP The reference amplitudes of the second polarization directions of the multiple TRPs included in the group are the same or different.
  • Figure 10 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1001, a receiver 1002, a transmitter 1003, a memory 1004 and a bus 1005.
  • the processor 1001 includes one or more processing cores.
  • the processor 1001 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1002 and the transmitter 1003 can be implemented as a communication component, and the communication component can be a communication chip.
  • the memory 1004 is connected to the processor 1001 through a bus 1005.
  • the memory 1004 can be used to store at least one program code, and the processor 1001 is used to execute the at least one program code to implement each step in the above method embodiment.
  • Memory 1004 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Static Read-Only Memory (SRAM), Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM).
  • EEPROM electrically erasable programmable read-only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • SRAM Static Read-Only Memory
  • ROM Read-Only Memory
  • Magnetic Memory Flash Memory
  • PROM Programmable Read-Only Memory
  • a computer-readable storage medium is also provided, with executable program code stored in the readable storage medium, and the executable program code is loaded and executed by the processor to implement each of the above methods.
  • the example provides a coefficient indication method performed by a communication device.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal or network device, it is used to implement as provided by various method embodiments. Coefficient indication method.
  • a communication system in an exemplary embodiment, includes a terminal and a network device.
  • the terminal is used to implement the coefficient indication method as described above.
  • the network device is used to implement the coefficient indication method as described above. coefficient indication method.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal or a network device, it is used to implement the coefficient indication method provided by each of the above method embodiments.

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Abstract

本申请公开了一种系数指示方法、装置及存储介质，涉及移动通信领域。该方法包括：终端接收网络设备发送的配置信息，配置信息用于配置多个传输接收节点TRP组的码本参数，每个TRP组包括至少一个TRP；根据配置信息，确定第一指示信息，第一指示信息用于指示组合系数中非零系数的位置，组合系数为终端根据所述多个TRP组的码本参数确定的系数，且组合系数用于网络设备进行预编码计算；向网络设备发送第一指示信息。本申请扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。

Description

系数指示方法、装置及存储介质 技术领域
本申请涉及移动通信领域，特别涉及一种系数指示方法、装置及存储介质。
背景技术
在移动通信系统中，网络设备与终端之间可以进行通信，并且网络设备可以采用确定的码本结构进行预编码计算，以便于网络设备向终端发送预编码后的数据。
具体的，终端根据当前使用的码本结构，通过在极化方向上的差分方式来上报当前使用的码本结构对应的组合系数，以便于网络设备基于终端上报的组合系数进行预编码。但是，当多个网络设备配置多个TRP(Transmission Reception Point,传输接收节点)的联合为一个终端服务时，终端如何针对多个TRP上报组合系数成为亟需解决的问题。
发明内容
本申请实施例提供了一种系数指示方法、装置及存储介质，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。所述技术方案如下：
根据本申请的第一方面，提供了一种系数指示方法，所述方法由终端执行，所述方法包括：
接收网络设备发送的配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
根据所述配置信息，确定第一指示信息，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算；
向所述网络设备发送所述第一指示信息。
根据本申请的第二方面，提供了一种系数指示方法，所述方法由网络设备 执行，所述方法包括：
向终端发送配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
接收终端发送的第一指示信息，所述第一指示信息由所述终端根据所述配置信息确定，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算。
根据本申请的第三方面，提供了一种系数指示装置，所述装置包括：
接收模块，用于接收网络设备发送的配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
确定模块，用于根据所述配置信息，确定第一指示信息，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算；
发送模块，用于向所述网络设备发送所述第一指示信息。
根据本申请的第四方面，提供了一种系数指示装置，所述装置包括：
发送模块，用于向终端发送配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
接收模块，用于接收终端发送的第一指示信息，所述第一指示信息由所述终端根据所述配置信息确定，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算。
根据本申请的第五方面，提供了一种终端，终端包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的系数指示方法。
根据本申请的第六方面，提供了一种网络设备，网络设备包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的系数指示方法。
根据本申请的第七方面，提供了一种通信系统，所述通信系统包括终端和网络设备，所述终端用于实现如上述第一方面所述的系数指示方法，所述网络设备用于实现如上述第二方面所述的系数指示方法。
根据本申请的第八方面，提供了一种计算机可读存储介质，可读存储介质中存储有可执行程序代码，可执行程序代码由处理器加载并执行以实现如上述方面的系数指示方法。
根据本申请的第九方面，提供了一种芯片，芯片包括可编程逻辑电路和/或程序指令，当芯片在终端或网络设备上运行时，用于实现如上述方面的系数指示方法。
根据本申请的第十方面，提供了一种计算机程序产品，当计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述方面的系数指示方法。
本申请提供了一种支持指示多TRP的组合系数中非零系数的位置的方案，终端根据多个TRP的码本参数确定用于指示多TRP的组合系数中非零系数的位置，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请一个示例性实施例提供的通信系统的框图；
图2示出了本申请一个示例性实施例提供的另一种通信系统的框图；
图3示出了本申请一个示例性实施例提供的系数指示方法的流程图；
图4示出了本申请一个示例性实施例提供的量化系数传输方法的流程图；
图5示出了本申请一个示例性实施例提供的系数指示方法的流程图；
图6示出了本申请一个示例性实施例提供的系数指示方法的流程图；
图7示出了本申请一个示例性实施例提供的一种系数指示装置的框图；
图8示出了本申请一个示例性实施例提供的另一种系数指示装置的框图；
图9示出了本申请一个示例性实施例提供的一种系数指示装置的框图；
图10示出了本申请一个示例性实施例提供的通信设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也是旨在包括多数形式，除非上下文清楚地表示其它含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，例如，在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
需要说明的是，本申请所涉及的信息(包括但不限于用户设备信息、用户个人信息等)、数据(包括但不限于用于分析的数据、存储的数据、展示的数据等)以及信号，均为经用户授权或者经过各方充分授权的，且相关数据的收集、使用和处理需要遵守相关国家和地区的相关法律法规和标准。
首先对本申请实施例提供的若干个术语进行简介。
多点协作传输技术：是指m-TRP(Muplti-TRP,mTRP)/panel(天线面板)为一个用户提供数据服务。多点协作传输技术包括相干传输(CJT，Coherent Joint Transmission)和非相干传输(NCJT，Non-Coherent Joint Transmission)两种传输方式。其中，CJT是指每个数据流会通过加权向量映射到参与协作的m-TRP/Panel上。CJT相当于把多个子阵拼接称为一个更高维度的虚拟阵列，以获得更高的赋形或预编码增益。
例如，如图1所示，网络设备通过3个TRP与终端进行通信，并且3个TRP通过CJT进行传输。
在一些实施例中，多个TRP进行CJT时可以采用以下可选的码本结构的用 于计算用户的下行数据传输预编码。
第一种：
Figure PCTCN2022108049-appb-000001
其中，a n和p n分别表示第n个TRP对应的相位与幅度因子。W 1,n表示第n个TRP对应的SD(Spatial Domain，空域)基向量，
Figure PCTCN2022108049-appb-000002
表示第n个TRP对应的组合系数，W f,n表示第n个TRP的对应FD(Frequency Domain，频域)基向量。H为共轭转置。
第二种：
Figure PCTCN2022108049-appb-000003
其中，a n和p n分别表示第n个TRP对应的相位与幅度因子。
Figure PCTCN2022108049-appb-000004
表示第n个TRP对应的组合系数。W SF,n表示第n个TRP对应的SD和FD基向量的组合。
第三种：
Figure PCTCN2022108049-appb-000005
W 1,n表示第n个TRP对应的SD基向量，
Figure PCTCN2022108049-appb-000006
表示N个TRP对应的组合系数，W f表示N个TRP对应的FD基向量。H为共轭转置。
下面，对本申请的应用场景进行说明：
图2示出了本申请一个示例性实施例提供的另一种通信系统的框图，该通信系统可以包括：终端10和网络设备20。
终端10的数量通常为多个，每一个网络设备20所管理的小区内可以分布一个或多个终端10。终端10可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)、移动台(Mobile Station，MS)等等。为方便描述，本申请实施例中，上面提到的设备统称为终端。
网络设备20是一种部署在接入网中用以为终端10提供无线通信功能的装置。为方便描述，本申请实施例中，上述为终端10提供无线通信功能的装置统称为网络设备。网络设备20与终端10之间可以通过空口建立连接，从而通过该连接进行通信，包括信令和数据的交互。网络设备20的数量可以有多个，两个邻近的网络设备20之间也可以通过有线或者无线的方式进行通信。终端10可以在不同的网络设备20之间进行系数指示，也即与不同的网络设备20建立连接。
该网络设备20可以包括各种形式的宏基站、微基站、中继站、接入点等等。在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如在5G NR(New Radio，新空口)系统中，称为gNodeB或者gNB。随着通信技术的演进，“网络设备”这一名称可能会变化。
本申请实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本申请实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
图3示出了本申请一个示例性实施例提供的系数指示方法的流程图，示例性的可以应用于如图2所示的终端和网络设备中，该方法包括以下内容中的至少部分内容：
步骤301：网络设备向终端发送配置信息，配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP。
步骤302：终端接收网络设备发送的配置信息。
在本申请实施例中，网络设备会为终端配置多个TRP组的码本参数，以便于终端确定用于通信的TRP组对应的码本参数。
其中，每个TRP组包括至少一个TRP，也就是TRP组包括的TRP数量包括两种情况。一种是TRP组包括一个TRP，另一种是TRP组包括多个TRP。
在一些实施例中，若TRP组包括一个TRP，也就是说一个TRP称为一个TRP组。在TRP组包括一个TRP的情况下，也可以将TRP组称为是TRP，本申请实施例不做限定。
在一些实施例中，码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
步骤303：终端根据配置信息，确定第一指示信息，第一指示信息用于指示组合系数中非零系数的位置，组合系数为终端根据多个TRP组的码本参数确定的系数，且组合系数用于网络设备进行预编码计算。
在本申请实施例中，终端基于网络设备发送的配置信息确定码本参数后，可以根据配置的码本参数确定用于指示组合系数中非零系数的位置的第一指示信息。
其中，终端发送的组合系数为针对多个TRP组确定的系数，并且网络设备可以根据该组合系数进行预编码计算。
步骤304：终端向网络设备发送第一指示信息。
步骤305：网络设备接收终端发送的第一指示信息。
在本申请实施例中，终端通过第一指示信息指示多个TRP组对应的组合系数，网络设备接收到终端发送的第一指示信息后，即可确定终端生成的针对每个TRP组的组合系数。网络设备通过第一指示信息中的组合系数中的非零系数的位置进行预编码计算。
需要说明的是，本申请实施例中终端所执行的步骤可以单独形成一个新的实施例，网络设备所执行的步骤也可以单独形成一个新的实施例，本申请不做限定。
本申请提供了一种支持指示多TRP的组合系数中非零系数的位置的方案，终端根据多个TRP的码本参数确定用于指示多TRP的组合系数中非零系数的位置，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。
图3所示实施例对终端可以指示组合系数的位置为例进行说明。下面对终端可以采用的第一指示信息的指示方式进行说明。
在一些实施例中，第一指示信息为位图信息，该位图信息中每个比特用于指示该比特对应的系数是否为非零系数。
在本申请实施例中，该位图信息中包括多个比特，每个比特指示对应位置上的组合系数是否为非零系数。
可选地，该位图信息采用bitmap(比特图)表示。或者，该位图信息采用其他方式表示。
例如，比特为0时，表示该比特对应的组合系数为非零系数，比特为1时，表示该比特对应的组合系数不为非零系数。又例如，比特为1时，表示该比特对应的组合系数为非零系数，比特为0时，表示该比特对应的组合系数不为非零系数。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限 定。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个位图信息，位图信息指示多个TRP组对应的组合系数中非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数均相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个位图信息，通过该位图信息即可指示多个TRP组对应的组合系数中非零系数的位置。
例如，采用一个N*2L n*M n比特的位图信息指示，或者采用一个N*K n比特的位图信息指示。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据配置信息确定多个位图信息，每个位图信息指示至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个位图信息，通过多个位图信息分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个位图信息指示,S≤N，N为用于CJT的TRP组的数量，位图信息的大小为2L n*M n或K n比特,或者为X*2L n*M n,或者X*K n比特，其中X表示有X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
在另一些实施例中，该第一指示信息为组合数，该组合数与非零系数的位置具有映射关系。
在本申请实施例中，该组合数与非零系数的位置具有映射关系，也就是说，一个组合数与对应一组非零系数的位置。终端确定组合系数中的非零系数后，即可根据非零系数的位置以及映射关系确定对应的组合数，进而通过第一指示信息向网络设备发送第一指示信息即可。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个组合数，组合数对应的指示信息指示多个TRP组对应的组合系数中非零系数 的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个组合数，通过该组合数即可指示多个TRP组对应的组合系数中非零系数的位置。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限定。
采用一个大小为
Figure PCTCN2022108049-appb-000007
或
Figure PCTCN2022108049-appb-000008
比特指示，即组合数指示非零系数的位置。其中，N为用于CJT的TRP组的数量，K 0,tot表示所有TRP组对应的非零系数个数，Y表示N个TRP组对应的最强系数个数，K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据配置信息确定多个组合数，每个组合数对应至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个组合数，通过多个组合数分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个组合数指示,S≤N，每个组合数的指示开销为
Figure PCTCN2022108049-appb-000009
或
Figure PCTCN2022108049-appb-000010
比特。其中，N为用于CJT的TRP组的数量，Z表示X个TRP组对应的组合系数，并且X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。K 0,n表示第n个TRP组对应的非零系数个数，K n为第n个TRP组的SD和FD基向量对个数。
本申请实施例提供的方案中，终端通过不同的第一指示信息均可指示多个TRP组对应的组合系数中非零系数的位置，扩展了通过第一指示信息指示非零系数的多样性。
图3所示实施例对终端可以通过第一指示信息指示组合系数中非零系数的位置进行了说明。而在另一实施例中，终端还可以对组合系数进行量化，进而 上报量化后的组合系数。下面，对终端发送量化后的组合系数的方案进行说明。图4示出了本申请一个示例性实施例提供的量化系数传输方法的流程图，示例性的可以应用于如图2所示的终端和网络设备中，该方法包括以下内容中的至少部分内容：
步骤401：终端对多个TRP组的组合系数进行量化，得到量化后的第一量化系数。
步骤402：终端向网络设备发送第一量化系数。
步骤403：网络设备接收终端发送的第一量化系数。
在本申请实施例中，终端确定多个TRP组的组合系数后，则可以对已确定的多个TRP组的组合系数进行量化，以得到量化后的第一量化系数。也可以理解为，终端对多个TRP组的组合系数进行量化是指采用其他方式表示组合系数，以便于终端向网络设备上报组合系数，也就是终端向网络设备发送第一量化系数，网络设备接收终端发送的第一量化系数。
第一量化系数为组合系数中非零系数的取值，网络设备通过非零系数的位置和取值进行预编码。
量化方式一：终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再根据极化方向对得到的第一归一化系数进行差分量化，得到第一量化系数。
其中，对多个TRP组对应的组合系数进行归一化是指从多个TRP组对应的组合系数中选择最大的组合系数，采用每个组合系数除以最大的组合系数得到的值构成第一归一化系数。
差分量化是指针对一个组合系数来说，采用参考幅度和差分系数共同指示该组合系数，并对参考幅度和差分系数进行量化。
在本申请实施例中，终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再采用参考幅度和差分系数共同指示第一归一化系数，进而得到对第一归一化系数进行量化后的第一量化系数。也可以理解为，终端对多个TRP组内所有的TRP对应的组合进行归一化，进而得到归一化后的第一归一化系数。
在一些实施例中，对多个TRP组对应的组合系数进行归一化是指确定多个TRP组对应的组合系数中最大的组合系数，多个TRP组对应的每个组合系数除以最大的组合系数，得到第一归一化系数。
可选地，极化方向包括第一极化方向和第二极化方向。终端根据极化方向对第一归一化系数进行差分量化，得到第一量化系数，包括：终端根据第一归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第一归一化系数进行差分量化进行说明，而在另一实施例中，终端还会向网络设备发送第二指示信息，该第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报，网络设备会接收终端发送的第二指示信息。
其中，最大参考幅度为第一量化系数包括的参考幅度中，最大的参考幅度。最强系数为第一量化系数中，差分系数最强的系数。
在一些实施例中，在第二指示信息用于指示最大参考幅度和最强系数的情况下，可以采用一个第二指示信息来同时指示最大参考幅度和最强系数，或者，还可以采用两个第二指示信息分别指示最大参考幅度和最强系数。
需要说明的是，用于指示最大参考幅度的第二指示信息的大小与用于指示最强系数的第二指示信息的大小不同。也可以理解为，用于指示最大参考幅度 的第二指示信息与用于指示最强系数的第二指示信息为不同的两个信息。
可选地，该第二指示信息可以采用位图信息或组合数来指示最大参考幅度或最强系数中的至少一项不进行量化上报。
可选地，第二指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为用于CJT的TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第二指示信息为组合数，组合数用于指示每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000011
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000012
或
Figure PCTCN2022108049-appb-000013
或者
Figure PCTCN2022108049-appb-000014
或
Figure PCTCN2022108049-appb-000015
来指示最强系数的位置。N为用于CJT的TRP组的数量，K 0,tot表示所有TRP组对应的非零系数个数，L n为第n个TRP组的SD基向量或端口个数，K n为第n个TRP组的SD和FD基向量对个数。M n为第n个TRP组的FD基向量个数。
下面以举例方式对本申请涉及的差分量化进行说明。
例如，TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第三种码本结构计算数据传输的预编码，并且多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。网络设备为终端配置两个TRP对应的FD基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。终端根据两个TRP到该终端的下行信道采用码本的计算方法得到两个TRP对应的组合系数矩阵为：
Figure PCTCN2022108049-appb-000016
式中
Figure PCTCN2022108049-appb-000017
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的组合系数。首先对
Figure PCTCN2022108049-appb-000018
各系数进行归一化，并对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000019
上式中r 0和r 1分别表示两个TRP的第一极化方向和第二极化方向的参考幅度，
Figure PCTCN2022108049-appb-000020
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
假设上式中最强系数位于第一TRP的第一极化方向上，则上式中参考幅度r 0＝1，该参考幅度不上报。
又例如，两个TRP在第一极化方向上的参考幅度不同，且在第二极化参考方向上的参考幅度不同，则归一化得到的矩阵与上述举例相同，而对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000021
上式中r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000022
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
仍假设上式中最强系数位于第一TRP的第一极化方向上，则有r 0＝1，该参考幅度不上报，其它的参考幅度r 1、r 2和r 3通过a＝4bits(比特)量化上报，非零的差分系数
Figure PCTCN2022108049-appb-000023
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
量化方式二：终端对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度，对归一化幅度进 行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数。
其中，对多个TRP组中的每个TRP组对应的组合系数进行归一化是指针对每个TRP组对应的组合系数提取一个归一化幅度，再将每个TRP组对应的组合系数除以对应的归一化幅度得到的值构成第二归一化系数。
在一些实施例中，该归一化幅度获取方式为：针对每个TRP组对应的组合系数提取一个目标幅度，该目标幅度为每个TRP组对应的组合系数包括的最大幅度，再从多个TRP组对应的目标幅度中选择最大的目标幅度，将每个TRP组对应的目标幅度除以最大的目标幅度得到每个TRP组对应的归一化幅度。
差分量化是指针对一个第二归一化系数来说，采用参考幅度和差分系数共同指示该第二归一化系数，并对参考幅度和差分系数进行量化。
在一些实施例中，若每个TRP组包括一个TRP，则说明是针对一个TRP进行的归一化，并依次执行后续过程，若每个TRP组包括多个TRP，则说明是针对多个TRP构成的一个TRP组进行的归一化，并依次执行后续过程。
下面，对两种得到第一量化系数的方案进行说明。
第一种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据第二归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数；对归一化幅度、每个TRP组在第一极化方向上的参考幅度以及对应的差分系数和在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
第二种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
其中，该初始幅度是指终端根据第二归一化系数，确定的每个TRP组在第 一极化方向上的幅度和在第二极化方向上的幅度，也就是上述第一种方案中根据第二归一化系数确定的两个极化方向上的参考幅度。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第二归一化系数进行差分量化以及归一化幅度进行量化进行说明，而在另一实施例中，终端还会向网络设备发送第三指示信息，该第三指示信息还用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
在一些实施例中，在第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少两项的情况下，可以采用一个第三指示信息来同时指示最大参考幅度和最强系数，或者，还可以分别采用第三指示信息指示最大参考幅度、最强系数或最大归一化幅度中的至少两项。
需要说明的是，用于指示最大参考幅度的第三指示信息的大小、用于指示最强系数的第三指示信息的大小与用于指示最大归一化幅度的第三指示信息的大小不同。也可以理解为，用于指示最大参考幅度的第三指示信息、用于指示最强系数的第三指示信息与用于指示最大归一化幅度的第三指示信息为不同的信息。
可选地，该第三指示信息可以采用位图信息或组合数来指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
可选地，第三指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第三指示信息为组合数，组合数指示每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000024
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000025
或
Figure PCTCN2022108049-appb-000026
或者
Figure PCTCN2022108049-appb-000027
或
Figure PCTCN2022108049-appb-000028
来指示最强系数的位置。N为用于CJT的TRP的数量，K 0表示一个TRP对应的非零系数个数，L n为第n个TRP组的SD基向量或端口个数，K n为第n个TRP的SD和FD基向量对个数。M n为第n个TRP的FD基向量个数。
又例如，第g个TRP组中包含N g个TRP,最强系数通过
Figure PCTCN2022108049-appb-000029
或
Figure PCTCN2022108049-appb-000030
或者
Figure PCTCN2022108049-appb-000031
K 0,tot,g表示第g个TRP组中包含的非零系数个数。这时最大参考幅度可不用量化上报。
最大归一化幅度通过N个比特或
Figure PCTCN2022108049-appb-000032
指示，或者由网络设备配置第n个TRP组对应最大归一化幅度，这时最大归一化幅度不需量化上报。又或者由通信协议约定第n个TRP组对应最大归一化幅度。
例如，一个TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第一种码本结构计算数据传输的预编码，并且2个TRP在第一极化方向上的参考幅度不同，2个TRP在第二极化参考方向上的参考幅度不同。网络设备为终端配置两个TRP对应的FD基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。
首先对两个TRP分别进行进行归一化得到：
Figure PCTCN2022108049-appb-000033
其中，
Figure PCTCN2022108049-appb-000034
Figure PCTCN2022108049-appb-000035
W 2,1和W 2,2分别表示第一个TRP和第二个TRP对应的差分后的组合系数矩阵。r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000036
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。s 0和s 1分别为第一个TRP和第二个TRP对应的目标幅度。假设两个组合系数中的最强系数均在第一极化方向，则有r 0＝1和r 2＝1，即这两个参考幅度不需要上报，而r 1和r 3通过a＝4bit量化，非零的差分系数
Figure PCTCN2022108049-appb-000037
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
然后再对
Figure PCTCN2022108049-appb-000038
中s 0和s 1进行归一化，假设s 0>s 1,则有
Figure PCTCN2022108049-appb-000039
其中t 0＝1和
Figure PCTCN2022108049-appb-000040
表示两个TRP对应的归一化幅度，最大归一化幅度t 0不需要量化上报，而t 1通过d＝4bit量化上报，并且通过
Figure PCTCN2022108049-appb-000041
指示哪个TRP对应最大幅度。
需要说明的是，上述实施例是确定
Figure PCTCN2022108049-appb-000042
后直接进行上报，而在另一些实施例中，在确定
Figure PCTCN2022108049-appb-000043
其中t 0＝1和
Figure PCTCN2022108049-appb-000044
表示两个TRP对应的归一化幅度，还需要进一步确定
Figure PCTCN2022108049-appb-000045
Figure PCTCN2022108049-appb-000046
Figure PCTCN2022108049-appb-000047
其中，e 0＝t 0*r 0,e 1＝t 0*r 1，e 2＝t 1*r 2，e 3＝t 1*r 3，分别通过4bits量化e 0和e 1、e 2、e 3。
在本申请实施例中，通过多种量化方式向网络设备上报组合系数，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。并且， 扩展了终端上报组合系数的方式的多样性。
需要说明的是，上述实施例可以拆分为新实施例，或与其他实施例互相组合为新实施例，本申请对实施例之间的组合不做限定。
图5示出了本申请一个示例性实施例提供的系数指示方法的流程图，示例性的可以应用于如图2所示的终端中，该方法包括以下内容中的至少部分内容：
步骤501：终端接收网络设备发送的配置信息。
在本申请实施例中，网络设备会为终端配置多个TRP组的码本参数，以便于终端确定用于通信的TRP组对应的码本参数。
其中，每个TRP组包括至少一个TRP，也就是TRP组包括的TRP数量包括两种情况。一种是TRP组包括一个TRP，另一种是TRP组包括多个TRP。
在一些实施例中，若TRP组包括一个TRP，也就是说一个TRP称为一个TRP组。在TRP组包括一个TRP的情况下，也可以将TRP组称为是TRP，本申请实施例不做限定。
在一些实施例中，码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
步骤502：终端根据配置信息，确定第一指示信息，第一指示信息用于指示组合系数中非零系数的位置，组合系数为终端根据多个TRP组的码本参数确定的系数，且组合系数用于网络设备进行预编码计算。
在本申请实施例中，终端基于网络设备发送的配置信息确定码本参数后，可以根据配置的码本参数确定用于指示组合系数中非零系数的位置的第一指示信息。
其中，终端发送的组合系数为针对多个TRP组确定的系数，并且网络设备可以根据该组合系数以及码本结构进行预编码计算。
步骤503：终端向网络设备发送第一指示信息。
在本申请实施例中，终端通过第一指示信息指示多个TRP组对应的组合系数，网络设备接收到终端发送的第一指示信息后，即可确定终端生成的针对每个TRP组的组合系数。
本申请提供了一种支持指示多TRP的组合系数中非零系数的位置的方案，终端根据多个TRP的码本参数确定用于指示多TRP的组合系数中非零系数的位 置，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。
下面对终端可以采用的第一指示信息的指示方式进行说明。
在一些实施例中，第一指示信息为位图信息，该位图信息中每个比特用于指示该比特对应的系数是否为非零系数。
在本申请实施例中，该位图信息中包括多个比特，每个比特指示对应位置上的组合系数是否为非零系数。
可选地，该位图信息采用bitmap(比特图)表示。或者，该位图信息采用其他方式表示。
例如，比特为0时，表示该比特对应的组合系数为非零系数，比特为1时，表示该比特对应的组合系数不为非零系数。又例如，比特为1时，表示该比特对应的组合系数为非零系数，比特为0时，表示该比特对应的组合系数不为非零系数。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限定。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个位图信息，位图信息指示多个TRP组对应的组合系数中非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数均相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个位图信息，通过该位图信息即可指示多个TRP组对应的组合系数中非零系数的位置。
例如，采用一个N*2L n*M n比特的位图信息指示，或者采用一个N*K n比特的位图信息指示。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据配置信息确定多个位图信息，每个位图信息指示至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个位图信息，通过多个位图信息分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个位图信息指示,S≤N，N为用于CJT的TRP组的数量，位图信息的大小为2L n*M n或K n比特,或者为X*2L n*M n,或者X*K n比特，其中X表示有X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
在另一些实施例中，该第一指示信息为组合数，该组合数与非零系数的位置具有映射关系。
在本申请实施例中，该组合数与非零系数的位置具有映射关系，也就是说，一个组合数与对应一组非零系数的位置。终端确定组合系数中的非零系数后，即可根据非零系数的位置以及映射关系确定对应的组合数，进而通过第一指示信息向网络设备发送第一指示信息即可。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个组合数，组合数对应的指示信息指示多个TRP组对应的组合系数中非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个组合数，通过该组合数即可指示多个TRP组对应的组合系数中非零系数的位置。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限定。
采用一个大小为
Figure PCTCN2022108049-appb-000048
或
Figure PCTCN2022108049-appb-000049
比特指示，即组合数指示非零系数的位置。其中，N为用于CJT的TRP组的数量，K 0,tot表示所有TRP对应的非零系数个数，Y表示N个TRP组对应的最强系数个数，K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的 情况下，根据配置信息确定多个组合数，每个组合数对应至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个组合数，通过多个组合数分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个组合数指示,S≤N，每个组合数的指示开销为
Figure PCTCN2022108049-appb-000050
或
Figure PCTCN2022108049-appb-000051
比特。其中，N为用于CJT的TRP组的数量，Z表示X个TRP组对应的组合系数，并且X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。K 0,n表示第n个TRP组对应的非零系数个数，K n为第n个TRP组的SD和FD基向量对个数。
本申请实施例提供的方案中，终端通过不同的第一指示信息均可指示多个TRP组对应的组合系数中非零系数的位置，扩展了通过第一指示信息指示非零系数的多样性。
在一些实施例中，终端对多个TRP组的组合系数进行量化，得到量化后的第一量化系数，终端向网络设备发送第一量化系数。
在本申请实施例中，终端确定多个TRP组的组合系数后，则可以对已确定的多个TRP组的组合系数进行量化，以得到量化后的第一量化系数。也可以理解为，终端对多个TRP组的组合系数进行量化是指采用其他方式表示组合系数，以便于终端向网络设备上报组合系数，也就是终端向网络设备发送第一量化系数，网络设备接收终端发送的第一量化系数。
量化方式一：终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再根据极化方向对得到的第一归一化系数进行差分量化，得到第一量化系数。
其中，对多个TRP组对应的组合系数进行归一化是指从多个TRP组对应的组合系数中选择最大的组合系数，采用每个组合系数除以最大的组合系数得到的值构成第一归一化系数。
差分量化是指针对一个组合系数来说，采用参考幅度和差分系数共同指示该组合系数，并对参考幅度和差分系数进行量化。
在本申请实施例中，终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再采用参考幅度和差分系数共同指示第一归一化 系数，进而得到对第一归一化系数进行量化后的第一量化系数。也可以理解为，终端对多个TRP组内所有的TRP对应的组合进行归一化，进而得到归一化后的第一归一化系数。
在一些实施例中，对多个TRP组对应的组合系数进行归一化是指确定多个TRP组对应的组合系数中最大的组合系数，多个TRP组对应的每个组合系数除以最大的组合系数，得到第一归一化系数。
可选地，极化方向包括第一极化方向和第二极化方向。终端根据极化方向对第一归一化系数进行差分量化，得到第一量化系数，包括：终端根据第一归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第一归一化系数进行差分量化进行说明，而在另一实施例中，终端还会向网络设备发送第二指示信息，该第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报，网络设备会接收终端发送的第二指示信息。
其中，最大参考幅度为第一量化系数包括的参考幅度中，最大的参考幅度。 最强系数为第一量化系数中，差分系数最强的系数。
在一些实施例中，在第二指示信息用于指示最大参考幅度和最强系数的情况下，可以采用一个第二指示信息来同时指示最大参考幅度和最强系数，或者，还可以采用两个第二指示信息分别指示最大参考幅度和最强系数。
需要说明的是，用于指示最大参考幅度的第二指示信息的大小与用于指示最强系数的第二指示信息的大小不同。也可以理解为，用于指示最大参考幅度的第二指示信息与用于指示最强系数的第二指示信息为不同的两个信息。
可选地，该第二指示信息可以采用位图信息或组合数来指示最大参考幅度或最强系数中的至少一项不进行量化上报。
可选地，第二指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为用于CJT的TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第二指示信息为组合数，组合数用于指示每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000052
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000053
或
Figure PCTCN2022108049-appb-000054
或者
Figure PCTCN2022108049-appb-000055
或
Figure PCTCN2022108049-appb-000056
来指示最强系数的位置。N为用于CJT的TRP组的数量，K 0,tot表示所有TRP组对应的非零系数个数，K n为第n个TRP组的SD和FD基向量对个数。M n为第n个TRP组的FD基向量个数。
下面以举例方式对本申请涉及的差分量化进行说明。
例如，TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第三种码本结构计算数据传输的预编码，并且多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。网络设备为终端配置两个TRP对应的FD基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。终端根据两个TRP到该终端的下行信道采用码本的计算方法得到两个TRP对应的组合系数矩阵为：
Figure PCTCN2022108049-appb-000057
式中
Figure PCTCN2022108049-appb-000058
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的组合系数。首先对
Figure PCTCN2022108049-appb-000059
各系数进行归一化，并对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000060
上式中r 0和r 1分别表示两个TRP的第一极化方向和第二极化方向的参考幅度，
Figure PCTCN2022108049-appb-000061
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
假设上式中最强系数位于第一TRP的第一极化方向上，则上式中参考幅度r 0＝1，该参考幅度不上报。
又例如，两个TRP在第一极化方向上的参考幅度不同，且在第二极化参考方向上的参考幅度不同，则归一化得到的矩阵与上述举例相同，而对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000062
上式中r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000063
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
仍假设上式中最强系数位于第一TRP的第一极化方向上，则有r 0＝1，该参考幅度不上报，其它的参考幅度r 1、r 2和r 3通过a＝4bits(比特)量化上报，非零的差分系数
Figure PCTCN2022108049-appb-000064
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
量化方式二：终端对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度，对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数。
其中，对多个TRP组中的每个TRP组对应的组合系数进行归一化是指针对每个TRP组对应的组合系数提取一个归一化幅度，再将每个TRP组对应的组合系数除以对应的归一化幅度得到的值构成第二归一化系数。
在一些实施例中，该归一化幅度获取方式为：针对每个TRP组对应的组合系数提取一个目标幅度，该目标幅度为每个TRP组对应的组合系数包括的最大幅度，再从多个TRP组对应的目标幅度中选择最大的目标幅度，将每个TRP组对应的目标幅度除以最大的目标幅度得到每个TRP组对应的归一化幅度。
差分量化是指针对一个第二归一化系数来说，采用参考幅度和差分系数共同指示该第二归一化系数，并对参考幅度和差分系数进行量化。
在一些实施例中，若每个TRP组包括一个TRP，则说明是针对一个TRP进行的归一化，并依次执行后续过程，若每个TRP组包括多个TRP，则说明是针对多个TRP构成的一个TRP组进行的归一化，并依次执行后续过程。
下面，对两种得到第一量化系数的方案进行说明。
第一种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据第二归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数；对归一化幅度、每个TRP组在第一极化方向上的参考幅度以及对应的差分系数和在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
第二种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
其中，该初始幅度是指终端根据第二归一化系数，确定的每个TRP组在第一极化方向上的幅度和在第二极化方向上的幅度，也就是上述第一种方案中根据第二归一化系数确定的两个极化方向上的参考幅度。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多 个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第二归一化系数进行差分量化以及归一化幅度进行量化进行说明，而在另一实施例中，终端还会向网络设备发送第三指示信息，该第三指示信息还用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
在一些实施例中，在第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少两项的情况下，可以采用一个第三指示信息来同时指示最大参考幅度和最强系数，或者，还可以分别采用第三指示信息指示最大参考幅度、最强系数或最大归一化幅度中的至少两项。
需要说明的是，用于指示最大参考幅度的第三指示信息的大小、用于指示最强系数的第三指示信息的大小与用于指示最大归一化幅度的第三指示信息的大小不同。也可以理解为，用于指示最大参考幅度的第三指示信息、用于指示最强系数的第三指示信息与用于指示最大归一化幅度的第三指示信息为不同的信息。
可选地，该第三指示信息可以采用位图信息或组合数来指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
可选地，第三指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第三指示信息为组合数，组合数指示每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000065
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000066
或
Figure PCTCN2022108049-appb-000067
或者
Figure PCTCN2022108049-appb-000068
或
Figure PCTCN2022108049-appb-000069
来指示最强系数的位置。N为用于CJT的TRP的数量，K 0表示一个TRP对应的非零系数个数，L n为第n个TRP组的SD基向量或端口个数，K n为第n个TRP的SD和FD基向量对个数。M n为第n个TRP的FD基向量个数。
又例如，第g个TRP组中包含N g个TRP,最强系数通过
Figure PCTCN2022108049-appb-000070
或
Figure PCTCN2022108049-appb-000071
或者
Figure PCTCN2022108049-appb-000072
K 0,tot,g表示第g个TRP组中包含的非零系数个数。这时最大参考幅度可不用量化上报。
最大归一化幅度通过N个比特或
Figure PCTCN2022108049-appb-000073
指示，或者由网络设备配置第n个 TRP组对应最大归一化幅度，这时最大归一化幅度不需量化上报。又或者由通信协议约定第n个TRP组对应最大归一化幅度。
例如，一个TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第一种码本结构计算数据传输的预编码，并且2个TRP在第一极化方向上的参考幅度不同，2个TRP在第二极化参考方向上的参考幅度不同。网络设备为终端配置两个TRP对应的FD基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。
首先对两个TRP分别进行进行归一化得到：
Figure PCTCN2022108049-appb-000074
其中，
Figure PCTCN2022108049-appb-000075
Figure PCTCN2022108049-appb-000076
W 2,1和W 2,2分别表示第一个TRP和第二个TRP对应的差分后的组合系数矩阵。r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000077
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。s 0和s 1分别为第一个TRP和第二个TRP对应的目标幅度。假设两个组合系数中的最强系数均在第一极化方向，则有r 0＝1和r 2＝1，即这两个参考幅度不需要上报，而r 1和r 3通过a＝4bit量化，非零的差分系数
Figure PCTCN2022108049-appb-000078
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
然后再对
Figure PCTCN2022108049-appb-000079
中s 0和s 1进行归一化，假设s 0>s 1,则有
Figure PCTCN2022108049-appb-000080
其中t 0＝1和
Figure PCTCN2022108049-appb-000081
表示两个TRP对应的归一化幅度，最大归一化幅度t 0不需要量化上报，而t 1通过d＝4bit量化上报，并且通过
Figure PCTCN2022108049-appb-000082
指示哪个TRP对应最大幅度。
需要说明的是，上述实施例是确定
Figure PCTCN2022108049-appb-000083
后直接进行上报，而在另一些实施例中，在确定
Figure PCTCN2022108049-appb-000084
其中t 0＝1和
Figure PCTCN2022108049-appb-000085
表示两个TRP对应 的归一化幅度，还需要进一步确定
Figure PCTCN2022108049-appb-000086
Figure PCTCN2022108049-appb-000087
Figure PCTCN2022108049-appb-000088
其中，e 0＝t 0*r 0,e 1＝t 0*r 1，e 2＝t 1*r 2，e 3＝t 1*r 3，分别通过4bits量化e 0和e 1、e 2、e 3。
在本申请实施例中，通过多种量化方式向网络设备上报组合系数，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。并且，扩展了终端上报组合系数的方式的多样性。
图6示出了本申请一个示例性实施例提供的系数指示方法的流程图，示例性的可以应用于如图2所示的网络设备中，该方法包括以下内容中的至少部分内容：
步骤601：网络设备向终端发送配置信息，配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP。
在本申请实施例中，网络设备会为终端配置多个TRP组的码本参数，以便于终端确定用于通信的TRP组对应的码本参数。
其中，每个TRP组包括至少一个TRP，也就是TRP组包括的TRP数量包括两种情况。一种是TRP组包括一个TRP，另一种是TRP组包括多个TRP。
在一些实施例中，若TRP组包括一个TRP，也就是说一个TRP称为一个TRP组。在TRP组包括一个TRP的情况下，也可以将TRP组称为是TRP，本申请实施例不做限定。
在一些实施例中，码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
步骤602：网络设备接收终端发送的第一指示信息，第一指示信息用于指示 组合系数中非零系数的位置，组合系数为终端根据多个TRP组的码本参数确定的系数，且组合系数用于网络设备进行预编码计算。
在本申请实施例中，终端通过第一指示信息指示多个TRP组对应的组合系数，网络设备接收到终端发送的第一指示信息后，即可确定终端生成的针对每个TRP组的组合系数。
本申请提供了一种支持指示多TRP的组合系数中非零系数的位置的方案，终端根据多个TRP的码本参数确定用于指示多TRP的组合系数中非零系数的位置，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。
在一些实施例中，第一指示信息为位图信息，该位图信息中每个比特用于指示该比特对应的系数是否为非零系数。
在本申请实施例中，该位图信息中包括多个比特，每个比特指示对应位置上的组合系数是否为非零系数。
可选地，该位图信息采用bitmap(比特图)表示。或者，该位图信息采用其他方式表示。
例如，比特为0时，表示该比特对应的组合系数为非零系数，比特为1时，表示该比特对应的组合系数不为非零系数。又例如，比特为1时，表示该比特对应的组合系数为非零系数，比特为0时，表示该比特对应的组合系数不为非零系数。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限定。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个位图信息，位图信息指示多个TRP组对应的组合系数中非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数均相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个位图信息，通过该位图信息即可指示多个TRP组对应的组合系数中非零系数的位置。
例如，采用一个N*2L n*M n比特的位图信息指示，或者采用一个N*K n比特 的位图信息指示。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据配置信息确定多个位图信息，每个位图信息指示至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个位图信息，通过多个位图信息分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个位图信息指示,S≤N，N为用于CJT的TRP组的数量，位图信息的大小为2L n*M n或K n比特,或者为X*2L n*M n,或者X*K n比特，其中X表示有X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。其中，N为用于CJT的TRP组的数量，L n为第n个TRP组的SD基向量或端口个数。M n为第n个TRP组的FD基向量个数。K n为第n个TRP组的SD和FD基向量对个数。
在另一些实施例中，该第一指示信息为组合数，该组合数与非零系数的位置具有映射关系。
在本申请实施例中，该组合数与非零系数的位置具有映射关系，也就是说，一个组合数与对应一组非零系数的位置。终端确定组合系数中的非零系数后，即可根据非零系数的位置以及映射关系确定对应的组合数，进而通过第一指示信息向网络设备发送第一指示信息即可。
可选地，在多个TRP组的码本参数均相同的情况下，根据配置信息确定一个组合数，组合数对应的指示信息指示多个TRP组对应的组合系数中非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组的码本参数相同，也就是说每个TRP对应的码本参数均相同，在此情况下可以配置一个组合数，通过该组合数即可指示多个TRP组对应的组合系数中非零系数的位置。
需要说明的是，本申请实施例中的第一指示信息的大小根据码本参数确定。
在一些实施例中，终端可以根据SD基向量或端口个数以及FD基向量个数确定第一指示信息的大小，或者，根据SD和FD基向量对个数确定第一指示信 息的大小，或者采用其他方式确定第一指示信息的大小，本申请实施例不作限定。
采用一个大小为
Figure PCTCN2022108049-appb-000089
或
Figure PCTCN2022108049-appb-000090
比特指示，即组合数指示非零系数的位置。其中，N为用于CJT的TRP组的数量，K 0,tot表示所有TRP对应的非零系数个数，Y表示N个TRP组对应的最强系数个数，K n为第n个TRP组的SD和FD基向量对个数。
可选地，在多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据配置信息确定多个组合数，每个组合数对应至少一个TRP组对应的组合系数中的非零系数的位置。
在本申请实施例中，网络设备为终端配置的多个TRP组中至少两个TRP组的码本参数不同时，也就是说至少存在两个TRP的码本参数不同，在此情况下可以配置多个组合数，通过多个组合数分别指示不同码本参数的不同TRP组对应的组合系数中非零系数的位置。
例如，采用S个组合数指示,S≤N，每个组合数的指示开销为
Figure PCTCN2022108049-appb-000091
或
Figure PCTCN2022108049-appb-000092
比特。其中，N为用于CJT的TRP组的数量，Z表示X个TRP组对应的组合系数，并且X个TRP组对应的SD基向量或端口个数、FD基向量个数、SD和FD基向量对个数均相同。K 0,n表示第n个TRP组对应的非零系数个数，K n为第n个TRP组的SD和FD基向量对个数。
本申请实施例提供的方案中，终端通过不同的第一指示信息均可指示多个TRP组对应的组合系数中非零系数的位置，扩展了通过第一指示信息指示非零系数的多样性。
在一些实施例中，网络设备接收终端发送的第一量化系数。
在本申请实施例中，终端确定多个TRP组的组合系数后，则可以对已确定的多个TRP组的组合系数进行量化，以得到量化后的第一量化系数。也可以理解为，终端对多个TRP组的组合系数进行量化是指采用其他方式表示组合系数，以便于终端向网络设备上报组合系数，也就是终端向网络设备发送第一量化系数，网络设备接收终端发送的第一量化系数。
量化方式一：终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再根据极化方向对得到的第一归一化系数进行差分量化，得到第一量化系数。
其中，对多个TRP组对应的组合系数进行归一化是指从多个TRP组对应的 组合系数中选择最大的组合系数，采用每个组合系数除以最大的组合系数得到的值构成第一归一化系数。
差分量化是指针对一个组合系数来说，采用参考幅度和差分系数共同指示该组合系数，并对参考幅度和差分系数进行量化。
在本申请实施例中，终端对多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，再采用参考幅度和差分系数共同指示第一归一化系数，进而得到对第一归一化系数进行量化后的第一量化系数。也可以理解为，终端对多个TRP组内所有的TRP对应的组合进行归一化，进而得到归一化后的第一归一化系数。
在一些实施例中，对多个TRP组对应的组合系数进行归一化是指确定多个TRP组对应的组合系数中最大的组合系数，多个TRP组对应的每个组合系数除以最大的组合系数，得到第一归一化系数。
可选地，极化方向包括第一极化方向和第二极化方向。终端根据极化方向对第一归一化系数进行差分量化，得到第一量化系数，包括：终端根据第一归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多 个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第一归一化系数进行差分量化进行说明，而在另一实施例中，终端还会向网络设备发送第二指示信息，该第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报，网络设备会接收终端发送的第二指示信息。
其中，最大参考幅度为第一量化系数包括的参考幅度中，最大的参考幅度。最强系数为第一量化系数中，差分系数最强的系数。
在一些实施例中，在第二指示信息用于指示最大参考幅度和最强系数的情况下，可以采用一个第二指示信息来同时指示最大参考幅度和最强系数，或者，还可以采用两个第二指示信息分别指示最大参考幅度和最强系数。
需要说明的是，用于指示最大参考幅度的第二指示信息的大小与用于指示最强系数的第二指示信息的大小不同。也可以理解为，用于指示最大参考幅度的第二指示信息与用于指示最强系数的第二指示信息为不同的两个信息。
可选地，该第二指示信息可以采用位图信息或组合数来指示最大参考幅度或最强系数中的至少一项不进行量化上报。
可选地，第二指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为用于CJT的TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第二指示信息为组合数，组合数用于指示每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000093
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000094
或
Figure PCTCN2022108049-appb-000095
或者
Figure PCTCN2022108049-appb-000096
或
Figure PCTCN2022108049-appb-000097
来指示最强系数的位置。N为用于CJT的TRP组的数量，K 0,tot表示所有TRP组对应的非零系数个数，K n为第n个TRP组的SD和FD基向量对个数。M n为第n个TRP组的FD基向量个数。
下面以举例方式对本申请涉及的差分量化进行说明。
例如，TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第三种码本结构计算数据传输的预编码，并且多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。网络设备为终端配置两个TRP对应的FD 基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。终端根据两个TRP到该终端的下行信道采用码本的计算方法得到两个TRP对应的组合系数矩阵为：
Figure PCTCN2022108049-appb-000098
式中
Figure PCTCN2022108049-appb-000099
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的组合系数。首先对
Figure PCTCN2022108049-appb-000100
各系数进行归一化，并对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000101
上式中r 0和r 1分别表示两个TRP的第一极化方向和第二极化方向的参考幅度，
Figure PCTCN2022108049-appb-000102
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
假设上式中最强系数位于第一TRP的第一极化方向上，则上式中参考幅度r 0＝1，该参考幅度不上报。
又例如，两个TRP在第一极化方向上的参考幅度不同，且在第二极化参考方向上的参考幅度不同，则归一化得到的矩阵与上述举例相同，而对归一化的系数通过以下方式进行差分表示为：
Figure PCTCN2022108049-appb-000103
上式中r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000104
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。
仍假设上式中最强系数位于第一TRP的第一极化方向上，则有r 0＝1，该参考幅度不上报，其它的参考幅度r 1、r 2和r 3通过a＝4bits(比特)量化上报，非零的差分系数
Figure PCTCN2022108049-appb-000105
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
量化方式二：终端对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度，对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数。
其中，对多个TRP组中的每个TRP组对应的组合系数进行归一化是指针对每个TRP组对应的组合系数提取一个归一化幅度，再将每个TRP组对应的组合系数除以对应的归一化幅度得到的值构成第二归一化系数。
在一些实施例中，该归一化幅度获取方式为：针对每个TRP组对应的组合系数提取一个目标幅度，该目标幅度为每个TRP组对应的组合系数包括的最大幅度，再从多个TRP组对应的目标幅度中选择最大的目标幅度，将每个TRP组对应的目标幅度除以最大的目标幅度得到每个TRP组对应的归一化幅度。
差分量化是指针对一个第二归一化系数来说，采用参考幅度和差分系数共同指示该第二归一化系数，并对参考幅度和差分系数进行量化。
在一些实施例中，若每个TRP组包括一个TRP，则说明是针对一个TRP进行的归一化，并依次执行后续过程，若每个TRP组包括多个TRP，则说明是针对多个TRP构成的一个TRP组进行的归一化，并依次执行后续过程。
下面，对两种得到第一量化系数的方案进行说明。
第一种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据第二归一化系数，确定每个TRP组在第一极化方向上的参考幅度以及对应的差分系数以及在第二极化方向上的参考幅度以及对应的差分系数；对归一化幅度、每个TRP组在第一极化方向上的参考幅度以及对应的差分系数和在第二极化方向上的参考幅度以及对应的差分系数进行量化，得到第一量化系数。
第二种：极化方向包括第一极化方向和第二极化方向，终端对归一化幅度进行量化，并根据极化方向对每个TRP组对应的第二归一化系数进行差分量化，得到量化后的第一量化系数，包括：根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
其中，该初始幅度是指终端根据第二归一化系数，确定的每个TRP组在第一极化方向上的幅度和在第二极化方向上的幅度，也就是上述第一种方案中根据第二归一化系数确定的两个极化方向上的参考幅度。
需要说明的是，本申请实施例中TRP组在第一极化方向上的参考幅度和在第二极化方向上的参考幅度包括多种情况。
第一种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组在第二极化参考方向上的参考幅度相同。
第二种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同。
第三种：多个TRP组中至少两个TRP组在第一极化方向上的参考幅度不同，多个TRP组在第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同。
第四种：多个TRP组在第一极化方向上的参考幅度相同，多个TRP组中至少两个TRP组在第二极化参考方向上的参考幅度不同，每个TRP组内包括的多 个TRP的第二极化方向的参考幅度相同或不同。
另外，上述实施例是对终端可以对第二归一化系数进行差分量化以及归一化幅度进行量化进行说明，而在另一实施例中，终端还会向网络设备发送第三指示信息，该第三指示信息还用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
在一些实施例中，在第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少两项的情况下，可以采用一个第三指示信息来同时指示最大参考幅度和最强系数，或者，还可以分别采用第三指示信息指示最大参考幅度、最强系数或最大归一化幅度中的至少两项。
需要说明的是，用于指示最大参考幅度的第三指示信息的大小、用于指示最强系数的第三指示信息的大小与用于指示最大归一化幅度的第三指示信息的大小不同。也可以理解为，用于指示最大参考幅度的第三指示信息、用于指示最强系数的第三指示信息与用于指示最大归一化幅度的第三指示信息为不同的信息。
可选地，该第三指示信息可以采用位图信息或组合数来指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
可选地，第三指示信息为位图信息，位图信息中每个比特用于指示比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
可选地，每个TRP组对应的码本参数相同，采用N个比特的位图信息来指示最大参考幅度的位置。N为TRP组的数量。采用N*2L n*M n个比特或N*K n个比特来指示最强系数的位置。
可选地，第三指示信息为组合数，组合数指示每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
例如，该组合数采用
Figure PCTCN2022108049-appb-000106
个比特来指示最大参考幅度。N为TRP组的数量。又或者，该组合数采用
Figure PCTCN2022108049-appb-000107
或
Figure PCTCN2022108049-appb-000108
或者
Figure PCTCN2022108049-appb-000109
或
Figure PCTCN2022108049-appb-000110
来指示最强系数的位置。N为用于CJT的TRP的数量，K 0表示一个TRP对应的非零系数个数，L n为第n个TRP组的SD基向量或端口个数，K n为第n个TRP的SD和FD基向量对个数。M n为第n个TRP的FD基向量个数。
又例如，第g个TRP组中包含N g个TRP,最强系数通过
Figure PCTCN2022108049-appb-000111
或
Figure PCTCN2022108049-appb-000112
或者
Figure PCTCN2022108049-appb-000113
K 0,tot,g表示第g个TRP组中包含的非零系数个数。这时最大参考幅度可不用量化上报。
又例如，第g个TRP组中包含N g个TRP,最强系数通过
Figure PCTCN2022108049-appb-000114
或
Figure PCTCN2022108049-appb-000115
或者
Figure PCTCN2022108049-appb-000116
K 0,tot,g表示第g个TRP组中包含的非零系数个数。这时最大参考幅度可不用量化上报。
最大归一化幅度通过N个比特或
Figure PCTCN2022108049-appb-000117
指示，或者由网络设备配置第n个TRP组对应最大归一化幅度，这时最大归一化幅度不需量化上报。又或者由通信协议约定第n个TRP组对应最大归一化幅度。
例如，一个TRP组包括一个TRP，则本申请涉及2个TRP通过CJT为一个终端服务，终端与网络设备之间采用上述实施例中的第一种码本结构计算数据传输的预编码，并且2个TRP在第一极化方向上的参考幅度不同，2个TRP在第二极化参考方向上的参考幅度不同。网络设备为终端配置两个TRP对应的FD基向量个数M＝4,每个TRP对应的SD基向量个数为L n＝2。
首先对两个TRP分别进行进行归一化得到：
Figure PCTCN2022108049-appb-000118
其中，
Figure PCTCN2022108049-appb-000119
Figure PCTCN2022108049-appb-000120
W 2,1和W 2,2分别表示第一个TRP和第二个TRP对应的差分后的组合系数矩阵。r 0和r 1分别表示第一个TRP的第一极化方向和第二极化方向的参考幅度，r 2和r 3分别表示第二个TRP的第一极化方向和第二极化方向的参考幅度。
Figure PCTCN2022108049-appb-000121
表示第n个TRP对应的第p极化方向上的组合系数矩阵中的第l行m列的差分系数。s 0和s 1分别为第一个TRP和第二个TRP对应的目标幅度。假设两个组合系数中的最强系数均在第一极化方向，则有r 0＝1和r 2＝1，即这两个参考幅度不需要上报，而r 1和r 3通过a＝4bit量化，非零的差分系数
Figure PCTCN2022108049-appb-000122
包括差分幅度和差分相位，差分幅度和差分相位分别通过b＝3bits和c＝4bits量化上报。
然后再对
Figure PCTCN2022108049-appb-000123
中s 0和s 1进行归一化，假设s 0>s 1,则有
Figure PCTCN2022108049-appb-000124
其中t 0＝1和
Figure PCTCN2022108049-appb-000125
表示两个TRP对应的归一化幅度，最大归一化幅度t 0不需要量化上报，而t 1通过d＝4bit量化上报，并且通过
Figure PCTCN2022108049-appb-000126
指示哪个TRP对应最大幅度。
需要说明的是，上述实施例是确定
Figure PCTCN2022108049-appb-000127
后直接进行上报，而在另一些实施例中，在确定
Figure PCTCN2022108049-appb-000128
其中t 0＝1和
Figure PCTCN2022108049-appb-000129
表示两个TRP对应的归一化幅度，还需要进一步确定
Figure PCTCN2022108049-appb-000130
Figure PCTCN2022108049-appb-000131
Figure PCTCN2022108049-appb-000132
其中，e 0＝t 0*r 0,e 1＝t 0*r 1，e 2＝t 1*r 2，e 3＝t 1*r 3，分别通过4bits量化e 0和e 1、e 2、e 3。
在本申请实施例中，通过多种量化方式向网络设备上报组合系数，扩展了终端上报组合系数中非零系数的位置的方式，用于网络设备获得多个TRP对应的非零系数位置信息，进而保证终端与网络设备之间进行通信的可靠性。并且，扩展了终端上报组合系数的方式的多样性。
图7示出了本申请一个示例性实施例提供的一种系数指示装置的框图，参见图7，该装置包括：
接收模块701，用于接收网络设备发送的配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
确定模块702，用于根据所述配置信息，确定第一指示信息，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算；
发送模块703，用于向所述网络设备发送所述第一指示信息。
在一些实施例中，所述第一指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的系数是否为非零系数；
或，
所述第一指示信息为组合数，所述组合数与非零系数的位置具有映射关系。
在一些实施例中，所述确定模块702，还用于：
在所述多个TRP组的码本参数均相同的情况下，根据所述配置信息确定一个位图信息，所述位图信息指示所述多个TRP组对应的组合系数中非零系数的位置；
或，
在所述多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据所述配置信息确定多个位图信息，每个位图信息指示至少一个TRP组对应的组合系数中的非零系数的位置。
在一些实施例中，所述确定模块702，还用于：
在所述多个TRP组的码本参数均相同的情况下，根据所述配置信息确定一个组合数，所述组合数对应的指示信息指示所述多个TRP组对应的组合系数中非零系数的位置；
或，
在所述多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据所述配置信息确定多个组合数，每个组合数对应至少一个TRP组对应的组合系数中的非零系数的位置。
在一些实施例中，所述第一指示信息的大小根据所述码本参数确定。
在一些实施例中，所述码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
在一些实施例中，参见图8，所述装置还包括：
量化模块704，用于对所述多个TRP组的组合系数进行量化，得到量化后的第一量化系数；
发送模块703，用于向所述网络设备发送所述第一量化系数。
在一些实施例中，所述量化模块704，还用于：
对所述多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数；
根据极化方向对所述第一归一化系数进行差分量化，得到所述第一量化系数。
在一些实施例中，所述极化方向包括第一极化方向和第二极化方向，所述量化模块704，还用于：
根据所述第一归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数；
对所述每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数。
在一些实施例中，所述装置还包括：
发送模块703，用于向所述网络设备发送第二指示信息；
所述第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报。
在一些实施例中，所述第二指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置；
或，
所述第二指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
在一些实施例中，所述量化模块704，还用于：
对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度；
对所述归一化幅度进行量化，并根据极化方向对所述每个TRP组对应的第二归一化系数进行差分量化，得到量化后的所述第一量化系数。
在一些实施例中，所述极化方向包括第一极化方向和第二极化方向，所述量化模块704，还用于：
根据第二归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数；对所述归一化幅度、每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数；
或者，
根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考 幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
在一些实施例中，所述装置还包括：
发送模块703，用于向所述网络设备发送第三指示信息；
所述第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
在一些实施例中，所述第三指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置；
或，
所述第三指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
在一些实施例中，所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同；
或，
所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同；
或，
所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同；
或，
所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由 不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图9示出了本申请一个示例性实施例提供的一种系数指示装置的框图，参见图9，该装置包括：
发送模块901，用于向终端发送配置信息，所述配置信息用于配置多个TRP组的码本参数，每个TRP组包括至少一个TRP；
接收模块902，用于接收终端发送的第一指示信息，所述第一指示信息由所述终端根据所述配置信息确定，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算。
在一些实施例中，所述第一指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的系数是否为非零系数；
或，
所述第一指示信息为组合数，所述组合数与非零系数的位置具有映射关系。
在一些实施例中，所述第一指示信息的大小根据所述码本参数确定。
在一些实施例中，所述码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
在一些实施例中，所述接收模块902，还用于接收终端发送的第一量化系数，所述第一量化系数由所述终端对所述多个TRP组的组合系数进行量化得到。
在一些实施例中，所述第一量化系数由所述终端对所述多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，根据极化方向对所述第一归一化系数进行差分量化得到。
在一些实施例中，所述极化方向包括第一极化方向和第二极化方向，所述第一量化系数由所述终端根据所述第一归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对所述每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到。
在一些实施例中，所述接收模块902，还用于接收所述终端发送的第二指示 信息，所述第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报。
在一些实施例中，所述第二指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置；
或，
所述第二指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
在一些实施例中，所述第一量化系数由所述终端对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度，对所述归一化幅度进行量化，并根据极化方向对所述每个TRP组对应的第二归一化系数进行差分量化得到。
在一些实施例中，所述极化方向包括第一极化方向和第二极化方向，所述第一量化系数由所述终端根据第二归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对所述归一化幅度、每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到，或，所述第一量化系数由所述终端根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
在一些实施例中，所述接收模块902，还用于接收所述终端发送的第三指示信息，所述第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
在一些实施例中，所述第三指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置；
或，
所述第三指示信息为组合数，所述组合数用于指示所述每个TRP组的最大 参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
在一些实施例中，所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同；
或，
所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同；
或，
所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同；
或，
所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图10示出了本申请一个示例性实施例提供的通信设备的结构示意图，该通信设备包括：处理器1001、接收器1002、发射器1003、存储器1004和总线1005。
处理器1001包括一个或者一个以上处理核心，处理器1001通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1002和发射器1003可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1004通过总线1005与处理器1001相连。
存储器1004可用于存储至少一个程序代码，处理器1001用于执行该至少一个程序代码，以实现上述方法实施例中的各个步骤。
此外，通信设备可以为终端或网络设备。存储器1004可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器(ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
在示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现上述各个方法实施例提供的由通信设备执行的系数指示方法。
在示例性实施例中，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端或网络设备上运行时，用于实现如各个方法实施例提供的系数指示方法。
在示例性实施例中，提供了一种通信系统，所述通信系统包括终端和网络设备，所述终端用于实现如上述所述的系数指示方法，所述网络设备用于实现如上述所述的系数指示方法。
在示例性实施例中，提供了计算机程序产品，当所述计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述各个方法实施例提供的系数指示方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (36)

  1. 一种系数指示方法，其特征在于，所述方法由终端执行，所述方法包括：
    接收网络设备发送的配置信息，所述配置信息用于配置多个传输接收节点TRP组的码本参数，每个TRP组包括至少一个TRP；
    根据所述配置信息，确定第一指示信息，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算；
    向所述网络设备发送所述第一指示信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的系数是否为非零系数；
    或，
    所述第一指示信息为组合数，所述组合数与非零系数的位置具有映射关系。
  3. 根据权利要求2所述的方法，其特征在于，所述第一指示信息为位图信息，所述根据所述配置信息，确定第一指示信息，包括：
    在所述多个TRP组的码本参数均相同的情况下，根据所述配置信息确定一个位图信息，所述位图信息指示所述多个TRP组对应的组合系数中非零系数的位置；
    或，
    在所述多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据所述配置信息确定多个位图信息，每个位图信息指示至少一个TRP组对应的组合系数中的非零系数的位置。
  4. 根据权利要求2所述的方法，其特征在于，所述第一指示信息为组合数，所述根据所述配置信息，确定第一指示信息，包括：
    在所述多个TRP组的码本参数均相同的情况下，根据所述配置信息确定一个组合数，所述组合数对应的指示信息指示所述多个TRP组对应的组合系数中非零系数的位置；
    或，
    在所述多个TRP组的码本参数存在至少两个TRP组的码本参数不同的情况下，根据所述配置信息确定多个组合数，每个组合数对应至少一个TRP组对应的组合系数中的非零系数的位置。
  5. 根据权利要求2至4任一所述的方法，其特征在于，所述第一指示信息的大小根据所述码本参数确定。
  6. 根据权利要求1至5任一所述的方法，其特征在于，所述码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
  7. 根据权利要求1至6任一所述的方法，其特征在于，所述方法还包括：
    对所述多个TRP组的组合系数进行量化，得到量化后的第一量化系数；
    向所述网络设备发送所述第一量化系数。
  8. 根据权利要求7所述的方法，其特征在于，所述对所述多个TRP组的组合系数进行量化，得到量化后的第一量化系数，包括：
    对所述多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数；
    根据极化方向对所述第一归一化系数进行差分量化，得到所述第一量化系数。
  9. 根据权利要求8所述的方法，其特征在于，所述极化方向包括第一极化方向和第二极化方向，所述根据极化方向对所述第一归一化系数进行差分量化，得到所述第一量化系数，包括：
    根据所述第一归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数；
    对所述每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数 以及在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    向所述网络设备发送第二指示信息；
    所述第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报。
  11. 根据权利要求10所述的方法，其特征在于，所述第二指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置；
    或，
    所述第二指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
  12. 根据权利要求7所述的方法，其特征在于，所述对所述多个TRP组的组合系数进行量化，得到量化后的第一量化系数，包括：
    对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度；
    对所述归一化幅度进行量化，并根据极化方向对所述每个TRP组对应的第二归一化系数进行差分量化，得到量化后的所述第一量化系数。
  13. 根据权利要求12所述的方法，其特征在于，所述极化方向包括第一极化方向和第二极化方向，所述对所述归一化幅度进行量化，并根据极化方向对所述每个TRP组对应的第二归一化系数进行差分量化，得到量化后的所述第一量化系数，包括：
    根据第二归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对所述归一化幅度、每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量 化，得到所述第一量化系数；
    或者，
    根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化，得到所述第一量化系数，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
  14. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    向所述网络设备发送第三指示信息；
    所述第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
  15. 根据权利要求14所述的方法，其特征在于，所述第三指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置；
    或，
    所述第三指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
  16. 根据权利要求9或13所述的方法，其特征在于，
    所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同；
    或，
    所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同；
    或，
    所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同；
    或，
    所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
  17. 一种系数指示方法，其特征在于，所述方法由网络设备执行，所述方法包括：
    向终端发送配置信息，所述配置信息用于配置多个传输接收节点TRP组的码本参数，每个TRP组包括至少一个TRP；
    接收终端发送的第一指示信息，所述第一指示信息由所述终端根据所述配置信息确定，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备进行预编码计算。
  18. 根据权利要求17所述的方法，其特征在于，所述第一指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的系数是否为非零系数；
    或，
    所述第一指示信息为组合数，所述组合数与非零系数的位置具有映射关系。
  19. 根据权利要求17或18所述的方法，其特征在于，所述第一指示信息的大小根据所述码本参数确定。
  20. 根据权利要求17至19任一所述的方法，其特征在于，所述码本参数包括SD基向量个数、端口个数、FD基向量个数、SD基向量和FD基向量对个数中的至少一项。
  21. 根据权利要求17至20任一所述的方法，其特征在于，所述方法还包括：
    接收终端发送的第一量化系数，所述第一量化系数由所述终端对所述多个TRP组的组合系数进行量化得到。
  22. 根据权利要求21所述的方法，其特征在于，所述第一量化系数由所述终端对所述多个TRP组对应的组合系数进行归一化，得到归一化后的第一归一化系数，根据极化方向对所述第一归一化系数进行差分量化得到。
  23. 根据权利要求22所述的方法，其特征在于，所述极化方向包括第一极化方向和第二极化方向，所述第一量化系数由所述终端根据所述第一归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对所述每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到。
  24. 根据权利要求23所述的方法，其特征在于，所述方法还包括：
    接收所述终端发送的第二指示信息，所述第二指示信息用于指示最大参考幅度或最强系数中的至少一项不进行量化上报。
  25. 根据权利要求24所述的方法，其特征在于，所述第二指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度或最强系数中的至少一项的位置；
    或，
    所述第二指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度或最强系数中的至少一项的位置。
  26. 根据权利要求21所述的方法，其特征在于，所述第一量化系数由所述终端对多个TRP组中的每个TRP组对应的组合系数进行归一化，得到每个TRP组对应的第二归一化系数以及归一化幅度，对所述归一化幅度进行量化，并根据极化方向对所述每个TRP组对应的第二归一化系数进行差分量化得到。
  27. 根据权利要求26所述的方法，其特征在于，所述极化方向包括第一极化方向和第二极化方向，所述第一量化系数由所述终端根据第二归一化系数，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对所述归一化幅度、每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到，或，所述第一量化系数由所述终端根据所述第二归一化系数和所述归一化幅度，确定每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数以及在所述第二极化方向上的参考幅度以及对应的差分系数，对每个TRP组在所述第一极化方向上的参考幅度以及对应的差分系数和在所述第二极化方向上的参考幅度以及对应的差分系数进行量化得到，所述参考幅度包括所述第二归一化系数的初始幅度与所述归一化幅度的乘积。
  28. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    接收所述终端发送的第三指示信息，所述第三指示信息用于指示最大参考幅度、最强系数或最大归一化幅度中的至少一项不进行量化上报。
  29. 根据权利要求28所述的方法，其特征在于，所述第三指示信息为位图信息，所述位图信息中每个比特用于指示所述比特对应的TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置；
    或，
    所述第三指示信息为组合数，所述组合数用于指示所述每个TRP组的最大参考幅度、最强系数或最大归一化幅度中的至少一项的位置。
  30. 根据权利要求23或27所述的方法，其特征在于，
    所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同；
    或，
    所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同， 每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同，且第二极化方向的参考幅度相同或不同；
    或，
    所述多个TRP组中至少两个TRP组在所述第一极化方向上的参考幅度不同，所述多个TRP组在所述第二极化参考方向上的参考幅度相同，每个TRP组内包括的多个TRP的第一极化方向的参考幅度相同或不同；
    或，
    所述多个TRP组在所述第一极化方向上的参考幅度相同，所述多个TRP组中至少两个TRP组在所述第二极化参考方向上的参考幅度不同，每个TRP组内包括的多个TRP的第二极化方向的参考幅度相同或不同。
  31. 一种系数指示装置，其特征在于，所述装置包括：
    接收模块，用于接收网络设备发送的配置信息，所述配置信息用于配置多个传输接收节点TRP组的码本参数，每个TRP组包括至少一个TRP；
    确定模块，用于根据所述配置信息，确定第一指示信息，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备基于所述码本结构进行预编码计算；
    发送模块，用于向所述网络设备发送所述第一指示信息。
  32. 一种系数指示装置，其特征在于，所述装置包括：
    发送模块，用于向终端发送配置信息，所述配置信息用于配置多个传输接收节点TRP组的码本参数，每个TRP组包括至少一个TRP；
    接收模块，用于接收终端发送的第一指示信息，所述第一指示信息由所述终端根据所述配置信息确定，所述第一指示信息用于指示组合系数中非零系数的位置，所述组合系数为所述终端根据所述多个TRP组的码本参数确定的系数，且所述组合系数用于所述网络设备基于所述码本结构进行预编码计算。
  33. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至16任一所述的系数指示方法。
  34. 一种网络设备，其特征在于，所述网络设备包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求17至30任一所述的系数指示方法。
  35. 一种通信系统，其特征在于，所述通信系统包括终端和网络设备，所述终端用于实现如权利要求1至16任一所述的系数指示方法，所述网络设备用于实现如权利要求17至30任一所述的系数指示方法。
  36. 一种计算机可读存储介质，其特征在于，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现如权利要求1至30任一所述的系数指示方法。
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