WO2020164153A1 - Procédé destiné à déterminer un paramètre de configuration, et dispositif terminal et dispositif de réseau associés - Google Patents

Procédé destiné à déterminer un paramètre de configuration, et dispositif terminal et dispositif de réseau associés Download PDF

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Publication number
WO2020164153A1
WO2020164153A1 PCT/CN2019/075294 CN2019075294W WO2020164153A1 WO 2020164153 A1 WO2020164153 A1 WO 2020164153A1 CN 2019075294 W CN2019075294 W CN 2019075294W WO 2020164153 A1 WO2020164153 A1 WO 2020164153A1
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Prior art keywords
codebook
layer
domain dft
vector set
weighting coefficient
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PCT/CN2019/075294
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English (en)
Chinese (zh)
Inventor
黄莹沛
陈文洪
方昀
史志华
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Oppo广东移动通信有限公司
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Priority to CN201980006533.1A priority Critical patent/CN111837344B/zh
Priority to PCT/CN2019/075294 priority patent/WO2020164153A1/fr
Publication of WO2020164153A1 publication Critical patent/WO2020164153A1/fr

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

Definitions

  • This application relates to the field of communications, and in particular to methods, terminal devices and network devices for determining configuration parameters.
  • the embodiments of the present application provide a method, terminal device, and network device for determining configuration parameters, which can reduce the overhead of a multi-layer codebook, thereby improving system efficiency.
  • a method for determining configuration parameters including: receiving configuration parameters of each layer of a codebook in a multi-layer codebook sent by a network device, where at least one configuration parameter exists in the configuration parameters of the multi-layer codebook.
  • each layer of codebook includes at least one of the following parameters: the number of spatial discrete Fourier transform DFT vectors of each layer of codebook, The number of frequency-domain DFT vectors of a layer codebook, the number of the largest non-zero elements in the weighting coefficient matrix of each layer of codebook, the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the difference of each layer of codebook The number of quantization accuracy, which includes the quantization accuracy of amplitude and/or the quantization accuracy of phase.
  • a method for determining configuration parameters including: sending configuration parameters of each layer of codebook in a multi-layer codebook to a terminal device, where at least one of the configuration parameters of the multi-layer codebook is different
  • the configuration parameters of each layer of codebook include at least one of the following parameters: the number of spatial discrete Fourier transform DFT vectors of each layer of codebook, and the number of DFT vectors of each layer of codebook.
  • the number of frequency-domain DFT vectors of the codebook, the number of the largest non-zero elements in the weighting coefficient matrix of each layer of codebook, the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the different quantization of each layer of codebook The number of precisions.
  • the quantization precision includes the quantization precision of the amplitude and/or the quantization precision of the phase.
  • a terminal device which is used to execute the method in the foregoing first aspect or each of its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • a network device configured to execute the method in the second aspect or its implementation manners.
  • the network device includes a functional module for executing the method in the foregoing second aspect or each implementation manner thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each of its implementation modes.
  • a chip for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the second aspect or any of the implementations thereof method.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program product including computer program instructions, which cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program which when running on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • the terminal device determines the multi-layer codebook based on the different configuration parameters of the multi-layer codebook configured by the network device, instead of simply extending the configuration parameters of the single-layer codebook to the configuration parameters of the multi-layer codebook.
  • the terminal device can reduce the overhead of the multi-layer codebook, for example, can reduce the overhead of the weighting coefficient matrix of the multi-layer codebook; and appropriately reduce the quantization accuracy of the codebook of some layers, which can effectively improve the system effectiveness.
  • Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a method for determining configuration parameters provided by an embodiment of the present application.
  • FIG. 3 is another schematic flowchart of a method for determining configuration parameters provided by an embodiment of the present application.
  • Fig. 4 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the NR type II codebook is independently coded in the frequency domain (each subband). Due to the high spatial quantization accuracy, the total feedback amount will be too large.
  • the domain-space joint codebook can greatly save the amount of feedback under the condition of ensuring NR performance.
  • the R16 NR type II codebook can be expressed as the following formula (1):
  • W 1 can be used to indicate 2L spatial beams (beam); Can be used to indicate M discrete Fourier Transform (DFT) basis vectors in frequency domains; (2L*M matrix) indicates the weighting coefficient of any pair of spatial beam and frequency domain DFT vectors.
  • DFT discrete Fourier Transform
  • Channel state information (Channel state information, CSI) UE reports may include L capacity indication beam W 1, Indicated M DFT basis and quantified
  • the base station obtains the downlink CSI of each layer through the product of the three.
  • the main parameters involved in the report can include: L value, that is, the number of DFT vectors in the spatial domain; M value (related to the reported frequency domain bandwidth), that is, the number of DFT vectors in the reported frequency domain. Number; K0 value, used for constraints The maximum number of elements to be reported; determined by a bitmap and/or an indication The number of non-zero elements in and/or Position in the middle; determined by one or more sets of (amplitude, phase) parameters
  • the quantization precision in, for example, the amplitude can be 3/4bit, and the phase can also be 3/4bit quantization.
  • the amplitude is quantized by 4bit, and the phase is quantized by 3bit; and the smaller part of the amplitude can be quantized by 2bit, and the phase is quantized by 2bit; or, for the 0th frequency
  • the amplitude and phase are all quantized by 4bit, while for the weighting coefficients corresponding to other frequency basis, the amplitude and phase are both quantized by 3bit.
  • the feedback accuracy of the two layers can be set to be the same; but for a codebook with a rank>2, for example, the rank is 3/4, if you directly follow the rank1/2
  • the embodiment of the present application proposes a method for determining configuration parameters.
  • the channel feedback accuracy corresponding to different layers is distinguished, and the feedback overhead of different layers may be different, so as to ensure In the actual system, feedback overhead is a compromise between multi-user diversity gain.
  • FIG. 2 is a schematic flowchart of a method 200 for determining configuration parameters according to an embodiment of the application.
  • the method 200 may be executed by a terminal device.
  • the terminal device may be a terminal device as shown in FIG. 1.
  • the method 200 includes: S210, receiving configuration parameters of each layer of a codebook in a multi-layer codebook sent by a network device, where at least one configuration parameter of the multi-layer codebook is in a different layer code
  • the settings are different in this. That is to say, the configuration parameters of each layer of codebook may include one or more types, and there is at least one configuration parameter in the configuration parameters that satisfy: the same type of configuration parameter of the multiple layer codebook is different, and the configuration parameter may be at least one Any one of the configuration parameters.
  • the configuration parameter of each layer of codebook may include at least one of the following parameters: the number L value of the spatial domain DFT vector of each layer of codebook, the number M of frequency domain DFT vector of the each layer of codebook Value, the maximum number of non-zero elements K0 in the weighting coefficient matrix of each layer of codebook, the quantization precision of the weighting coefficient matrix of each layer of codebook, and the number of different quantization precisions of each layer of codebook, the quantization The accuracy includes the quantization accuracy of the amplitude and/or the quantization accuracy of the phase; the weighting coefficient matrix is a weighting coefficient matrix corresponding to the spatial domain DFT vector and the frequency domain DFT vector.
  • the number of layers of the multi-layer codebook in the embodiment of the present application may be determined according to a rank indicator (Rank indicator, RI).
  • the terminal device may calculate the value of RI, and according to the calculated RI, determine that the number of layers of the multi-layer codebook is equal to the value of RI.
  • the terminal device determines the layer configuration of each layer of codebook according to the configuration parameters of each layer of codebook configured by the network device, and then determines W according to formula (1), and sends the W to the network device.
  • the method 200 may further include: the terminal device determines the spatial domain DFT vector set corresponding to each layer of codebook according to the number L value of the spatial domain DFT vector of each layer of codebook.
  • the number of elements that is, the DFT vectors included in the set of spatial domain DFT vectors
  • the value is L; in addition, all the spatial domain DFT vectors in the multiple spatial domain DFT vector sets corresponding to the multi-layer codebook belong to the same orthogonal set.
  • the domain DFT vector set may be a subset of the spatial domain DFT vector set of the first-level codebook, or the spatial domain DFT vector set of the first-level codebook partially intersects the spatial domain DFT vector set of the second-level codebook, Or completely disjoint, the embodiment of the present application is not limited to this.
  • the method 200 may further include: the terminal device sends a first indication message to the network device, where the first indication message is used to indicate the multilayer code This corresponds to a collection of multiple spatial domain DFT vectors. So that the first indication message can be used by the network device to determine the spatial domain DFT vector set corresponding to each layer of codebook.
  • the terminal device sending the first indication message to the network device may include: The terminal device sends the first information in the first instruction message to the network device, where the first information is used to indicate the spatial domain DFT vector set of the first layer codebook; the terminal device sends the first instruction message to the network device
  • the second information is used to indicate that the spatial domain DFT vector set of the second layer codebook is a subset of the spatial domain DFT vector set of the first layer codebook.
  • the second information can be used
  • the spatial domain DFT vector set indicating the first layer codebook includes a part of the spatial domain DFT vector set in the spatial domain DFT vector set of the second layer codebook.
  • the multi-layer codebook has 4 layer codebooks, which are numbered layer 1-4 respectively.
  • the terminal device receives the configuration parameter of the 4-layer codebook sent by the network device, and the configuration parameter includes the number L value of the spatial domain DFT vector of each layer of the 4-layer codebook, where the L value of each layer codebook As shown in Table 1.
  • the L values of layers 1-4 set here are not completely the same.
  • Each layer determines the spatial domain DFT vector set according to the corresponding L value.
  • All DFT vectors included in the spatial domain DFT vector set of the 4-layer codebook All belong to the same orthogonal set.
  • the L value of layer 1 and layer 2 are the same, and the L value of layer 3 and layer 4 are also the same.
  • the spatial domain DFT vector set of layer 1 and layer 2 can be selected to be the same or different, and the space of layer 3 and layer 4
  • the domain DFT vector set can also be selected to be the same or different; the L values of layer1/2 and layer3/4 are different, then the spatial domain DFT vector set of layer1/2 and the spatial domain DFT vector set of layer3/4 can intersect or Do not intersect, and the embodiment of the present application is not limited to this.
  • the spatial domain DFT vector set of layer 1 and layer 2 is set to select the same vector, and the spatial domain DFT vector set of layer 3 and layer 4 is also set to select the same vector, then the space of layer 1/2 There are three relationships between the domain DFT vector set and the layer3/4 spatial domain DFT vector set.
  • the terminal device may send first information to the network device, and the first information may be used to indicate the layer 1/2 spatial domain DFT vector set determined by the terminal device.
  • the first information may The set of spatial domain DFT vectors indicating layer1/2 includes (0,0), (4,0), (8,4) and (12,4); the terminal device then sends the second information to the network device, the second information It can be used to indicate that the layer3/4 spatial domain DFT vector set determined by the terminal device is a subset of the layer1/2 spatial domain DFT vector set.
  • the second information may be passed through a 4-bit bitmap (1 ,0,1,0) indicates that the spatial domain DFT vector set of layer3/4 includes the first and third elements in the spatial domain DFT vector set of layer1/2, that is, the spatial domain DFT vector set of layer3/4 includes those shown in Table 3. This can save feedback overhead, but the embodiment of the application is not limited to this.
  • the second relationship is: the spatial domain DFT vector set of layer3/4 and the spatial domain DFT vector set of layer1/2 partially intersect, that is, some DFT vectors in the spatial domain DFT vector set of layer3/4 also belong to the space of layer1/2 Domain DFT vector collection. Specifically, it is still assumed that the spatial domain DFT vector selection in the spatial domain DFT vector set of layer1/2 is as shown in the black squares in Table 2.
  • the spatial domain DFT vector selection in the spatial domain DFT vector set of layer3/4 can be as shown in the black square in Table 4, or the spatial domain DFT vector set of layer3/4 can also be other In the case of partial intersection, the embodiment of the present application is not limited to this.
  • the spatial domain DFT vector set of layer3/4 is completely disjoint with the spatial domain DFT vector set of layer1/2, that is, no DFT vector in the spatial domain DFT vector set of layer3/4 also belongs to layer1/2 A collection of DFT vectors in the space domain. Specifically, it is still assumed that the spatial domain DFT vector selection in the spatial domain DFT vector set of layer1/2 is as shown in the black squares in Table 2.
  • N1 and N2 in this embodiment represent the number of antenna ports in the horizontal and vertical directions
  • O1 and O2 represent the horizontal and vertical dimension beam oversampling configurations
  • each layer of codebook includes the number M value of the frequency domain DFT vector of the layer codebook, where the value of M can be determined correspondingly in formula (1) of The There are M rows of DFT vectors.
  • the M value of the multi-layer codebook can be set to exactly the same value, or can also be set to a different value.
  • the number M values of the spatial domain DFT vectors of the multi-layer codebook are not completely the same, that is, there are at least two layers of codebooks in the multi-layer codebook whose M values are different, and at the same time, the multi-layer codebook At least two layers of codebooks with the same M value may also exist or not exist in the codebook.
  • the method 200 may further include: the terminal device determines the frequency domain DFT vector set corresponding to each layer of codebook according to the number M value of the frequency domain DFT vector of each layer of codebook. Among them, for the frequency domain DFT vector set corresponding to any one layer of codebook, the number of elements included (that is, the DFT vector included in the spatial domain DFT vector set) is equal to the number of frequency domain DFT vectors of the layer codebook. Number M value.
  • the two-layer codebook can be called the third-layer codebook and the fourth-layer codebook, respectively.
  • the layer and the fourth layer codebook can be the same as or different from the first and second layer codebooks in the first embodiment.
  • the third layer codebook and the first layer codebook can refer to the same layer Codebook, or codebook of different layers.
  • the frequency of the fourth layer codebook may be a subset of the frequency domain DFT vector set of the third layer codebook, or the frequency domain DFT vector set of the third layer codebook partially intersects the frequency domain DFT vector set of the fourth layer codebook , Or completely disjoint, the embodiment of the present application is not limited to this.
  • the method 200 may further include: the terminal device sends a second indication message to the network device, the second indication message being used to indicate the Multiple frequency domain DFT vector sets corresponding to the multi-layer codebook, so that the first indication message can be used by the network device to determine the frequency domain DFT vector set corresponding to each layer of the codebook.
  • sending the second indication message to the network device by the terminal device may include: The network device sends the third information in the second instruction message, where the third information is used to indicate the frequency domain DFT vector set of the third layer codebook; sends the fourth information in the second instruction message to the network device
  • the fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook is a subset of the frequency domain DFT vector set of the third layer codebook.
  • the fourth information may be used to indicate the fourth layer codebook.
  • the frequency domain DFT vector set of the four-layer codebook includes a part of the frequency domain DFT vector set in the frequency domain DFT vector set of the second layer codebook.
  • the terminal device receives the configuration parameter of the 4-layer codebook sent by the network device.
  • the configuration parameter includes the number M value of the frequency domain DFT vector of each layer codebook of the 4-layer codebook, where the M value of each layer codebook As shown in Table 6.
  • the M values of layers 1-4 set here are not exactly the same, and each layer determines the frequency domain DFT vector set according to the corresponding M value.
  • the M value of layer 1 and layer 2 are the same, and the M value of layer 3 and layer 4 are also the same.
  • the frequency domain DFT vector set of layer 1 and layer 2 can be selected to be the same or different, and the frequency of layer 3 and layer 4
  • the set of domain DFT vectors can also be selected to be the same or different; if the M values of layer1/2 and layer3/4 are different, the frequency domain DFT vector set of layer1/2 and the frequency domain DFT vector set of layer3/4 can intersect or Do not intersect, and the embodiment of the present application is not limited to this.
  • the frequency domain DFT vector set of layer 1 and layer 2 are set to select the same vector, and the frequency domain DFT vector set of layer 3 and layer 4 are also set to select the same vector. Then the frequency of layer 1/2 There are three relationships between the domain DFT vector set and the layer3/4 frequency domain DFT vector set.
  • the frequency domain DFT vector set of layer3/4 is a subset of the frequency domain DFT vector set of layer1/2.
  • Table 7 it is assumed that the number L of spatial domain DFT vectors of layer 1/2 is all equal to 4, and it is assumed that the frequency domain DFT vectors in the frequency domain DFT vector set of layer 1/2 are selected as shown in Table 7
  • the shaded squares show that the DFT vectors numbered 0, 4, 11, and 12 are selected.
  • the frequency domain DFT vector selection in the frequency domain DFT vector set of layer3/4 can be as shown in Table 8.
  • the frequency domain DFT vector selection in the frequency domain DFT vector set of layer3/4 can be as shown in Table 8.
  • the DFT vectors numbered 0 and 12 are selected, or the frequency domain DFT vector set of layer 3/4 can also be other subsets, and the embodiment of the application is not limited to this .
  • the terminal device may send third information to the network device.
  • the third information may be used to indicate the layer 1/2 frequency domain DFT vector set determined by the terminal device.
  • the third information may The frequency domain DFT vector set indicating layer 1/2 includes 0, 4, 11, and 12; the terminal device sends fourth information to the network device, and the fourth information may be used to indicate the frequency domain DFT of layer 3/4 determined by the terminal device
  • the vector set is a subset of the frequency-domain DFT vector set of layer1/2.
  • the fourth information can indicate that the frequency-domain DFT vector set of layer3/4 includes layer1 through a 4-bit bitmap (1,0,0,1).
  • the first and fourth elements in the frequency domain DFT vector set of 2, that is, the frequency domain DFT vector set of layer 3/4 includes the elements shown in Table 8, which can save feedback overhead, but the embodiment of the present application is not limited to this.
  • the second relationship is: the frequency domain DFT vector set of layer3/4 and the frequency domain DFT vector set of layer1/2 partially intersect, that is, some DFT vectors in the frequency domain DFT vector set of layer3/4 also belong to the frequency of layer1/2. Domain DFT vector collection. Specifically, it is still assumed that the frequency domain DFT vector selection in the frequency domain DFT vector set of layer1/2 is as shown in the shaded squares in Table 7, that is, the DFT vectors numbered 0, 4, 11, and 12 are selected .
  • the frequency domain DFT vector selection in the frequency domain DFT vector set of layer3/4 can be filled with the shaded ones in Table 9 As shown in the square, the DFT vectors numbered 0 and 10 are selected.
  • the DFT vector numbered 0 also belongs to the frequency domain DFT vector set of layer1/2, or the frequency domain DFT vector set of layer3/4 It may also be the case where other parts intersect, and the embodiment of the application is not limited to this.
  • the third relationship is: the frequency domain DFT vector set of layer3/4 and the frequency domain DFT vector set of layer1/2 are completely disjoint, that is, the DFT vector does not exist in the frequency domain DFT vector set of layer3/4 and belongs to layer1/2.
  • a collection of frequency domain DFT vectors is as shown in the shaded squares in Table 7, that is, the DFT vectors numbered 0, 4, 11, and 12 are selected .
  • the frequency domain DFT vector set of layer3/4 is completely disjoint with the frequency domain DFT vector set of layer1/2, then the frequency domain DFT vector selection in the frequency domain DFT vector set of layer3/4 can be filled with shadows as shown in Table 10.
  • the frequency-domain DFT vector set of layer3/4 may also be other disjoint cases, and the embodiment of the present application is not limited to this.
  • the above Tables 7 to 10 are explained by taking the same polarization direction as an example, but layer1-4 can also select DFT vectors with different polarization directions, and referring to the above three relationships, the same applies to polarization. Different directions. For example, suppose that the frequency-domain DFT vector selection in the frequency-domain DFT vector set of layer 1/2 is as shown in the shaded squares in Table 11. If the frequency domain DFT vector set of layer3/4 is a subset of the frequency domain DFT vector set of layer1/2, then the frequency domain DFT vector selection in the frequency domain DFT vector set of layer3/4 can be filled with shadows as shown in Table 12.
  • the frequency domain DFT vector set of layer3/4 can also be other subsets; or, the frequency domain DFT vector set of layer3/4 can also be the same as the frequency domain DFT vector set of layer1/2 Partially or completely disjoint, the embodiment of the present application is not limited thereto.
  • N3 in this embodiment represents the number of DFT vectors in the frequency domain.
  • the second embodiment is also applicable, and will not be listed here.
  • the configuration parameters of each layer of codebook include the maximum number of non-zero elements K0 of the weighting coefficient matrix of each layer of codebook, where the weighting coefficient matrix is the formula ( 1) in The It is a 2L*M matrix, the corresponding element represents the weighting coefficient of the spatial domain DFT vector and the frequency domain DFT vector, and the K0 value represents the matrix The maximum number of non-zero elements in.
  • the K0 value of the multi-layer codebook can be set to exactly the same value, or can also be set to a different value.
  • the number K0 values of the spatial domain DFT vectors of the multi-layer codebook are not completely the same, that is, there are at least two layers of codebooks in the multi-layer codebook whose K0 values are different, and at the same time, the multi-layer codebook There may or may not exist in the codebook at least two layers of codebooks with the same K0 value.
  • the method 200 may further include: the terminal device determines the non-zero elements in the weighting coefficient matrix of each layer of codebook according to the maximum number of non-zero elements K0 of the weighting coefficient matrix of each layer of codebook The number of non-zero elements in the weighting coefficient matrix of each layer of codebook after determination does not exceed the K0 value.
  • the two-layer codebook can be called the fifth-layer codebook and the sixth-layer codebook respectively.
  • the layer and the sixth layer codebook can be the same or different from the first layer and second layer codebook in the first embodiment or the third layer and fourth layer codebook in the second embodiment, for example ,
  • the fifth layer codebook and the first layer codebook may refer to the same layer codebook or different layer codebooks.
  • the K0 value of each layer of the codebook represents the number of the largest non-zero elements in the weighting coefficient matrix.
  • the total number of elements included can be the same or different, for example, when the fifth When the number of rows and/or columns of the weighting coefficient matrix of the layer codebook is different from the number of rows and/or columns of the weighting coefficient matrix of the sixth layer codebook, the K0 of the fifth layer codebook and the sixth layer codebook The values can be the same or different.
  • the K0 values of the fifth layer codebook and the sixth layer codebook can also be the same or different .
  • the frequency domain DFT vector set of the fifth layer codebook is a subset of the frequency domain DFT vector set of the sixth layer codebook
  • the spatial domain DFT vector set of the fifth layer codebook is the sixth layer codebook
  • a subset of the spatial domain DFT vector set that is, the number of rows of the weighting coefficient matrix of the fifth-level codebook is less than the number of rows of the weighting coefficient matrix of the sixth-level codebook, and the columns of the weighting coefficient matrix of the fifth-level codebook
  • the K0 values of the fifth-level codebook and the sixth-level codebook may also be the same or different.
  • the positions of the non-zero elements of the weighting coefficient matrix of the fifth layer codebook correspond to the same positions as the positions of the non-zero elements of the weighting coefficient matrix of the sixth layer codebook, that is, for the fifth layer codebook
  • the corresponding spatial domain DFT vector and frequency domain DFT vector correspond to the spatial domain DFT vector set and the frequency domain DFT vector set belonging to the sixth-level codebook, and are in the sixth-level codebook.
  • the corresponding weighting coefficients in the weighting coefficient matrix are also non-zero elements.
  • the method 200 may further include: the terminal device reports to the network device Send a third indication message, where the third indication message is used to indicate the positions of non-zero elements in the multiple weighting coefficient matrices corresponding to the multi-layer codebook.
  • the terminal device sending the third indication message to the network device may include: the terminal device sends the fifth information in the third indication information to the network device, and the fifth information includes A bitmap of the positions of non-zero elements of the weighting coefficient matrix of the fifth-level codebook, and the bitmap can be used by the network device to determine the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the sixth The position of the non-zero element of the weighting coefficient matrix of the layer codebook.
  • the terminal device receives the configuration parameters of the 4-layer codebook sent by the network device.
  • the configuration parameters include the number K0 value of the frequency domain DFT vector of each layer codebook of the 4-layer codebook, where the K0 value of each layer codebook As shown in Table 6.
  • the K0 values of layers 1-4 set here are not completely the same.
  • Each layer determines the maximum number of non-zero elements in the weighting coefficient matrix according to the corresponding K0 value, and then determines the positions of the non-zero elements.
  • the K0 values of layer 1 and layer 2 are the same, and the K0 values of layer 3 and layer 4 are also the same.
  • the positions of non-zero elements in the weighting coefficient matrix of layer 1 and layer 2 can be selected to be the same or different.
  • the positions of the non-zero elements in the weighting coefficient matrix of layer 3 and layer 4 can also be selected to be the same or different; the K0 values of layer 1/2 and layer 3/4 are different.
  • the non-zero element in the weighting coefficient matrix of layer 1/2 may also be selected to be the same or different, and the embodiment of the present application is not limited thereto.
  • this embodiment describes the positions of non-zero elements of the weighting coefficient matrix that may be set in each layer of the codebook in the application scenario corresponding to Table 7 and Table 8 in the second embodiment. .
  • the L values of layer1-4 are all equal and equal to 4, but the selection of the DFT vector in the space domain of each layer can be different; in addition, the M value of layer1/2 and the selection of the frequency domain DFT vector are shown in Table 6 and Tables In the embodiment described in 7, the M value of layer3/4 and the selection of the frequency domain DFT vector are as described in the embodiments described in Table 6 and Table 8, and will not be repeated here for brevity.
  • the K0 values of layer1-4 are as shown in Table 13, where the K0 values of layer1 and 2 are equal, and the positions of the non-zero elements in the weighting coefficient matrix corresponding to layer1 and 2 can be selected to be the same or different.
  • the same position is taken as an example to illustrate, that is, the selection results of the positions of non-zero elements in the layer1 and 2 weighting coefficient matrices are shown in Table 14.
  • the squares filled with dotted shadows represent zero elements
  • the other squares filled with shadows indicates that the corresponding position in the weighting coefficient matrix is a non-zero element.
  • the K0 values of layer3 and 4 are also equal, and the positions of the non-zero elements in the weighting coefficient matrices corresponding to layer3 and 4 can be selected to be the same or different.
  • the same position is selected as an example for illustration; in addition, because layer3 is used here
  • the frequency domain DFT vector set of /4 is a subset of the frequency domain DFT vector of layer1/2 as an example.
  • the positions of the non-zero elements in the corresponding layer3 and 4 weighting coefficient matrices can be the same as the non-zero elements in the layer1/2 weighting coefficient matrix.
  • the positions of is set to be the same, that is, the selection results of the positions of the non-zero elements in the layer3 and 4 weighting coefficient matrices are shown in Table 15, where the expression is the same as in Table 14.
  • the squares filled with dotted shadows represent zero elements.
  • Other hatched squares that is, the squares filled in the same way as in Table 8) indicate that the corresponding positions in the weighting coefficient matrix are non-zero elements.
  • layer3/4 may also be indicated by a bitmap indicating layer1/2 and another short bitmap.
  • the terminal device sends 4*8 bits to the network device to indicate the position of Layer1/2 to select non-zero elements as shown in Figure 14; while Layer3/4 sends a 4bit bitmap to the network device to indicate from layer1/2 Select the two columns [0 12] from [0 4 11 12], and indicate the non-zero element position of layer 3/4 based on the non-zero element position indicated by Layer 1/2 through 4*8 bits, so as to save feedback overhead .
  • the position of the non-zero elements in the weighting coefficient matrix corresponding to layer3 and 4 can also be the same as layer1/2
  • the positions of the non-zero elements in the weighting coefficient matrix are correspondingly set to be different.
  • the positions of the set non-zero elements are completely opposite to those shown in Table 15, or are partly the same and partly different.
  • the embodiments of the present application are not limited to this .
  • the configuration parameters of the codebook for each layer also include the quantization accuracy of the weighting coefficient matrix of the codebook for each layer.
  • the weighting coefficient matrix is the formula (1) The It is a 2L*M matrix, corresponding to the weighting coefficients representing the spatial domain DFT vector and the frequency domain DFT vector; the quantization accuracy can include amplitude and/phase.
  • the quantization accuracy of the weighting coefficient matrix of the multi-layer codebook can be set to the same value or different values, and for the weighting coefficient matrix of any layer of the codebook, the quantization accuracy of each row and/or column of the codebook is also It can be set to be the same or different, and the embodiment of the present application is not limited thereto.
  • the following embodiment describes the quantization accuracy of the weighting coefficient matrix that may be set for each layer of the codebook in the application scenario corresponding to Table 14 and Table 15 in the third embodiment.
  • the quantization accuracy of the row and column of the weighting coefficient matrix of each layer of codebook is the same, but the quantization accuracy of the weighting coefficient matrix of different layers of codebooks is different.
  • the quantization accuracy of the weighting coefficient matrix of each layer of codebook is shown in Table 16.
  • the codebook of any layer is referred to here as the seventh layer codebook, where the seventh layer codebook is the same as the first layer and the first layer in the first embodiment.
  • the second layer codebook or the third and fourth layer codes in the second embodiment or the fifth and sixth layer codebooks in the third embodiment may be the same or different, for example, the seventh
  • the layer codebook and the first layer codebook may refer to the same layer codebook or different layer codebooks.
  • the quantization accuracy of the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook can be set to different values.
  • the configuration parameters of the seventh layer codebook may also include: the number of different quantization precisions of weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook, or the configuration parameters may also specifically include The number of maximum quantization precisions among different quantization precisions.
  • the method 200 may further include: the terminal device determines the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook according to the configuration parameters of the seventh layer codebook.
  • the method 200 may further include: the terminal device sends a fourth indication message to the network device, where the fourth indication message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook.
  • the "number" in Table 19 indicates the number of high quantization accuracy of the frequency domain DFT vector in the corresponding weighting coefficient matrix.
  • the quantization accuracy of the weighted coefficient matrix of layer 1/2 is set as shown in Table 20.
  • the seventh layer of codebook may include: the number of different quantization precisions of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook, for example, the seventh layer code
  • This configuration parameter may include the number of maximum quantization accuracy among different quantization accuracy.
  • the method 200 may further include: the terminal device determines the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook according to the configuration parameters of the seventh layer codebook.
  • the method 200 further includes: the terminal device sends a fourth indication message to the network device, where the fourth indication message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook.
  • K in Table 22 represents the number of rows corresponding to the maximum quantization accuracy of the spatial domain DFT vector in the weighting coefficient matrix.
  • the quantization accuracy of the weighting coefficient matrix of layer 1/2 can be set as shown in Table 23.
  • the high-precision configuration is the first part of the uplink control information (Uplink Control Information, UCI), that is, according to layer1/ Feedback is performed in the form of 2 before and layer 3/4 after, but the embodiment of the application is not limited to this.
  • UCI Uplink Control Information
  • the above-mentioned first embodiment and the second embodiment may be used in combination.
  • the results shown in Table 25 and Table 26 can be obtained respectively .
  • the above-mentioned first embodiment, second embodiment, and third embodiment may also be used in combination.
  • the results shown in Table 29 can be obtained.
  • the results shown in Table 2, Table 3, Table 7 and Table 15 are combined to obtain the results shown in Table 30.
  • the above-mentioned embodiment may also be used in combination with the fourth and fifth embodiments.
  • the above-mentioned embodiment may also be used in combination with the fourth and fifth embodiments.
  • details are not described herein again.
  • the terminal device determines the multi-layer codebook based on the different configuration parameters of the multi-layer codebook configured by the network device, instead of simply extending the configuration parameters of the single-layer codebook to In the configuration parameters of the multi-layer codebook, avoid excessively large codebook dimensions and reduce the overhead of the multi-layer codebook. For example, the overhead of the weighting coefficient matrix of the multi-layer codebook can be reduced; and the codebook of some layers can be appropriately reduced. The quantization accuracy can effectively improve the system efficiency.
  • FIG. 3 shows a schematic flowchart of a method 300 for determining configuration parameters according to an embodiment of the present application.
  • the method 300 may be executed by a network device.
  • the network device is the network device in FIG. 1.
  • the method 300 includes: S310, sending configuration parameters of each layer of the codebook in the multi-layer codebook to the terminal device, where at least one of the configuration parameters of the multi-layer codebook is in different layers of the codebook The settings are not the same.
  • the configuration parameters of each layer of codebook include at least one of the following parameters: the number of spatial domain DFT vectors of each layer of codebook, the number of frequency domain DFT vectors of each layer of codebook, and The number of the largest non-zero elements in the weighting coefficient matrix of the codebook, the quantization precision of the weighting coefficient matrix of each layer of codebook, and the number of different quantization precisions of each layer of codebook, the quantization precision includes the quantization precision of the amplitude and / Or quantization accuracy of phase.
  • the configuration parameters of each layer of codebook include the number of spatial domain DFT vectors of each layer of codebook, and the number of spatial domain DFT vectors of the multi-layer codebook is different.
  • the method 300 further includes: receiving a first indication message sent by the terminal device, where the first indication message is used to indicate a plurality of spatial domain DFT vector sets corresponding to the multilayer codebook, and The spatial domain DFT vector set of each layer of codebook is determined by the terminal device according to the number of spatial domain DFT vectors of each layer of codebook, and the spatial domain DFT of the multiple spatial domain DFT vector sets corresponding to the multilayer codebook The vectors all belong to the same orthogonal set.
  • the spatial domain DFT vector set of the first layer codebook and the spatial domain DFT vector set of the second layer codebook do not intersect, or the spatial domain DFT vector set of the second layer codebook is A subset of the spatial domain DFT vector set of the first-level codebook, where the first-level codebook and the second-level codebook are any two-level codebooks in the multi-level codebook.
  • the receiving the first indication message sent by the terminal device includes: receiving first information in the first indication message sent by the terminal device, the first information being used to indicate the first indication message The spatial domain DFT vector set of the layer codebook; receiving the second information in the first indication message sent by the terminal device, the second information is used to indicate that the spatial domain DFT vector set of the second layer codebook is the first A subset of the spatial domain DFT vector set of the layer codebook.
  • the configuration parameters of each layer of codebook include the number of frequency domain DFT vectors of each layer of codebook, and the number of frequency domain DFT vectors of the multi-layer codebook is different.
  • the frequency domain DFT vector set of the third layer codebook and the frequency domain DFT vector set of the fourth layer codebook do not intersect, or the frequency domain DFT vector set of the fourth layer codebook is A subset of the frequency domain DFT vector set of the third-level codebook, wherein the third-level codebook and the fourth-level codebook are any two-level codebooks in the multi-level codebook.
  • the receiving the second indication message sent by the terminal device includes: receiving third information in the second indication message sent by the terminal device, where the third information is used to indicate the third The frequency domain DFT vector set of the layer codebook; receiving the fourth information in the second indication message sent by the terminal device, where the fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook is the third A subset of the frequency domain DFT vector set of the layer codebook.
  • the configuration parameters of each layer of codebook include the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook, and the largest non-zero element of the weighting coefficient matrix of the multi-layer codebook The number of is not the same.
  • the method 300 further includes: receiving a third indication message sent by the terminal device, where the third indication message is used to indicate the number of non-zero elements in the multiple weighting coefficient matrices corresponding to the multi-layer codebook.
  • the position, the position of the non-zero element in the weighting coefficient matrix of each layer of codebook is determined by the terminal device according to the number of the largest non-zero element of the weighting coefficient matrix of each layer of codebook.
  • the frequency domain DFT vector set of the fifth layer codebook is a subset of the frequency domain DFT vector set of the sixth layer codebook
  • the spatial domain DFT vector set of the fifth layer codebook is the A subset of the spatial domain DFT vector set of the sixth-level codebook.
  • the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook correspond to the same positions as the non-zero elements of the weighting coefficient matrix of the sixth-level codebook , Where the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
  • the receiving the third indication message sent by the terminal device includes: receiving fifth information in the third indication information sent by the terminal device, where the fifth information includes the fifth layer code
  • the bitmap of the positions of the non-zero elements of the weighting coefficient matrix according to the bitmap, the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the non-zero elements of the weighting coefficient matrix of the sixth-level codebook are determined. The position of the zero element.
  • the configuration parameters of each layer of the codebook include the quantization accuracy of the weighting coefficient matrix of each layer of the codebook, and the quantization accuracy of the weighting coefficient matrix of the multi-layer codebook is different.
  • the quantization accuracy of the weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different, and/or, the weighting coefficient matrix of the seventh layer codebook has different frequency domains
  • the quantization accuracy of the weighting coefficients corresponding to the DFT vector is different, and the seventh layer codebook is any one layer of the multi-layer codebook.
  • the method 300 further includes: receiving a fourth indication message sent by the terminal device, where the fourth indication message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook, and the first The quantization accuracy of the weighting coefficient matrix of the seven-layer codebook is determined by the terminal device according to the configuration parameters of the seventh-layer codebook.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the terminal device 400 includes: a processing unit 410 and a transceiver unit 420.
  • the transceiver unit 420 is configured to: receive the configuration parameters of each layer of the codebook in the multi-layer codebook sent by the network device, and at least one configuration parameter in the configuration parameters of the multi-layer codebook is set in the different layer codebook Is not the same.
  • the configuration parameters of each layer of codebook include at least one of the following parameters: the number of spatial domain DFT vectors of each layer of codebook, the number of frequency domain DFT vectors of each layer of codebook, and The number of the largest non-zero elements in the weighting coefficient matrix of the codebook, the quantization precision of the weighting coefficient matrix of each layer of codebook, and the number of different quantization precisions of each layer of codebook, the quantization precision includes the quantization precision of the amplitude and / Or quantization accuracy of phase.
  • the configuration parameters of each layer of codebook include the number of spatial domain DFT vectors of each layer of codebook, and the number of spatial domain DFT vectors of the multi-layer codebook is different.
  • the processing unit 410 is configured to: according to the number of spatial domain DFT vectors of each layer of codebook, determine the spatial domain DFT vector set corresponding to each layer of codebook, and the multi-layer codebook The spatial domain DFT vectors in the plurality of corresponding spatial domain DFT vector sets all belong to the same orthogonal set.
  • the transceiving unit 420 is further configured to send a first indication message to the network device, where the first indication message is used to indicate multiple spatial domain DFT vector sets corresponding to the multi-layer codebook.
  • the spatial domain DFT vector set of the first layer codebook and the spatial domain DFT vector set of the second layer codebook do not intersect, or the spatial domain DFT vector set of the second layer codebook is A subset of the spatial domain DFT vector set of the first-level codebook, where the first-level codebook and the second-level codebook are any two-level codebooks in the multi-level codebook.
  • the configuration parameter of each layer of codebook includes the number of frequency domain DFT vectors of each layer of codebook, and the number of frequency domain DFT vectors of the multi-layer codebook is different.
  • the processing unit 410 is configured to determine a set of frequency domain DFT vectors corresponding to each layer of codebook according to the number of frequency domain DFT vectors of each layer of codebook.
  • the transceiver unit 420 is further configured to send a second indication message to the network device, where the second indication message is used to indicate multiple frequency domain DFT vector sets corresponding to the multi-layer codebook.
  • the frequency domain DFT vector set of the third layer codebook and the frequency domain DFT vector set of the fourth layer codebook do not intersect, or the frequency domain DFT vector set of the fourth layer codebook is A subset of the frequency domain DFT vector set of the third-level codebook, wherein the third-level codebook and the fourth-level codebook are any two-level codebooks in the multi-level codebook.
  • the frequency domain DFT vector set of the fourth layer codebook is a subset of the frequency domain DFT vector set of the third layer codebook
  • the transceiver unit 420 is further configured to: Send the third information in the second indication message, the third information is used to indicate the frequency domain DFT vector set of the third layer codebook; send the fourth information in the second indication message to the network device, the first The fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook includes a part of the frequency domain DFT vector set of the frequency domain DFT vector set of the second layer codebook.
  • the configuration parameters of each layer of codebook include the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook, and the largest non-zero element of the weighting coefficient matrix of the multi-layer codebook The number of is not the same.
  • the processing unit 410 is configured to determine the number of non-zero elements in the weighting coefficient matrix of each layer of codebook according to the number of the largest non-zero elements in the weighting coefficient matrix of each layer of codebook position.
  • the frequency domain DFT vector set of the fifth layer codebook is a subset of the frequency domain DFT vector set of the sixth layer codebook
  • the spatial domain DFT vector set of the fifth layer codebook is the A subset of the spatial domain DFT vector set of the sixth-level codebook.
  • the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook correspond to the same positions as the non-zero elements of the weighting coefficient matrix of the sixth-level codebook , Where the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
  • the transceiving unit 420 is further configured to send fifth information in the third indication information to the network device, where the fifth information includes the non-information of the weighting coefficient matrix of the fifth layer codebook.
  • a bitmap of the positions of zero elements which is used by the network device to determine the positions of non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the positions of non-zero elements of the weighting coefficient matrix of the sixth-level codebook .
  • the configuration parameters of each layer of the codebook include the quantization accuracy of the weighting coefficient matrix of each layer of the codebook, and the quantization accuracy of the weighting coefficient matrix of the multi-layer codebook is different.
  • the quantization accuracy of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different, and/or, the weighting coefficient matrix of the seventh layer codebook has different frequency domains
  • the quantization accuracy of the weighting coefficients corresponding to the DFT vector is different, and the seventh layer codebook is any one layer of the multi-layer codebook.
  • the configuration parameters of the seventh layer codebook include: the maximum quantization precision among the different quantization precisions of the weight coefficients corresponding to different spatial domain DFT vectors in the weight coefficient matrix of the seventh layer codebook The number, and/or the number of the maximum quantization accuracy among the different quantization accuracy of the weighting coefficients corresponding to the different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook.
  • the processing unit 410 is configured to determine the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook according to the configuration parameters of the seventh layer codebook.
  • the transceiving unit 420 is further configured to send a fourth indication message to the network device, where the fourth indication message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook.
  • terminal device 400 may correspond to the execution of the method 200 in the embodiment of the present application, and the above and other operations and/or functions of the various units in the terminal device 400 are for implementing FIGS. 1 to 3, respectively.
  • the corresponding process of the terminal device in each method in the method will not be repeated here.
  • the terminal device of the embodiment of the present application determines the multi-layer codebook based on the different configuration parameters of the multi-layer codebook configured by the network device, instead of simply extending the configuration parameters of the single-layer codebook to the multi-layer codebook.
  • the configuration parameters avoiding excessively large codebook dimensions can reduce the overhead of multi-layer codebooks, for example, reducing the overhead of the weighting coefficient matrix of multi-layer codebooks; and appropriately reducing the quantization accuracy of some layers of codebooks can be effective Improve system efficiency.
  • the network device 500 includes: a processing unit 510 and a transceiver unit 520.
  • the transceiver unit 520 is configured to: send configuration parameters of each layer of the codebook in the multi-layer codebook to the terminal device, and at least one configuration parameter in the configuration parameters of the multi-layer codebook is set to Not the same.
  • the configuration parameters of each layer of codebook include at least one of the following parameters: the number of spatial domain DFT vectors of each layer of codebook, the number of frequency domain DFT vectors of each layer of codebook, and The number of the largest non-zero elements in the weighting coefficient matrix of the codebook, the quantization precision of the weighting coefficient matrix of each layer of codebook, and the number of different quantization precisions of each layer of codebook, the quantization precision includes the quantization precision of the amplitude and / Or quantization accuracy of phase.
  • the configuration parameters of each layer of codebook include the number of spatial domain DFT vectors of each layer of codebook, and the number of spatial domain DFT vectors of the multi-layer codebook is different.
  • the transceiver unit 520 is further configured to: receive a first indication message sent by the terminal device, where the first indication message is used to indicate a plurality of spatial domain DFT vector sets corresponding to the multi-layer codebook ,
  • the spatial domain DFT vector set of each layer of codebook is determined by the terminal device according to the number of spatial domain DFT vectors of each layer of codebook, and the space in the multiple spatial domain DFT vector sets corresponding to the multilayer codebook
  • the domain DFT vectors all belong to the same orthogonal set.
  • the spatial domain DFT vector set of the first layer codebook and the spatial domain DFT vector set of the second layer codebook do not intersect, or the spatial domain DFT vector set of the second layer codebook is A subset of the spatial domain DFT vector set of the first-level codebook, where the first-level codebook and the second-level codebook are any two-level codebooks in the multi-level codebook.
  • the transceiver unit 520 is configured to: receive first information in the first indication message sent by the terminal device, where the first information is used to indicate the spatial domain DFT of the first layer codebook Vector set; receiving the second information in the first indication message sent by the terminal device, where the second information is used to indicate that the spatial domain DFT vector set of the second layer codebook is the spatial domain DFT of the first layer codebook A subset of the vector collection.
  • the configuration parameter of each layer of codebook includes the number of frequency domain DFT vectors of each layer of codebook, and the number of frequency domain DFT vectors of the multi-layer codebook is different.
  • the transceiver unit 520 is further configured to: receive a second indication message sent by the terminal device, where the second indication message is used to indicate a plurality of frequency domain DFT vector sets corresponding to the multi-layer codebook ,
  • the frequency domain DFT vector set corresponding to each layer of codebook is determined by the terminal device according to the number of frequency domain DFT vectors of each layer of codebook.
  • the frequency domain DFT vector set of the third layer codebook and the frequency domain DFT vector set of the fourth layer codebook do not intersect, or the frequency domain DFT vector set of the fourth layer codebook is A subset of the frequency domain DFT vector set of the third-level codebook, wherein the third-level codebook and the fourth-level codebook are any two-level codebooks in the multi-level codebook.
  • the transceiving unit 520 is further configured to: receive third information in the second indication message sent by the terminal device, where the third information is used to indicate the frequency domain of the third layer codebook DFT vector set; receiving fourth information in the second indication message sent by the terminal device, where the fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook is the frequency domain of the third layer codebook A subset of the DFT vector set.
  • the configuration parameters of each layer of codebook include the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook, and the largest non-zero element of the weighting coefficient matrix of the multi-layer codebook The number of is not the same.
  • the transceiver unit 520 is further configured to: receive a third indication message sent by the terminal device, where the third indication message is used to indicate that the multiple weighting coefficient matrices corresponding to the multi-layer codebook are non-zero.
  • the position of the element, the position of the non-zero element in the weighting coefficient matrix of each layer of codebook is determined by the terminal device according to the number of the largest non-zero element of the weighting coefficient matrix of each layer of codebook.
  • the frequency domain DFT vector set of the fifth layer codebook is a subset of the frequency domain DFT vector set of the sixth layer codebook
  • the spatial domain DFT vector set of the fifth layer codebook is the A subset of the spatial domain DFT vector set of the sixth-level codebook.
  • the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook correspond to the same positions as the non-zero elements of the weighting coefficient matrix of the sixth-level codebook , Where the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
  • the transceiving unit 520 is further configured to: receive fifth information in the third indication information sent by the terminal device, where the fifth information includes the weighting coefficient matrix of the fifth layer codebook A bitmap of the positions of non-zero elements; according to the bitmap, the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the positions of the non-zero elements of the weighting coefficient matrix of the sixth-level codebook are determined.
  • the configuration parameters of each layer of the codebook include the quantization accuracy of the weighting coefficient matrix of each layer of the codebook, and the quantization accuracy of the weighting coefficient matrix of the multi-layer codebook is different.
  • the quantization accuracy of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different, and/or, the weighting coefficient matrix of the seventh layer codebook has different frequency domains
  • the quantization accuracy of the weighting coefficients corresponding to the DFT vector is different, and the seventh layer codebook is any one layer of the multi-layer codebook.
  • the configuration parameters of the seventh layer codebook include: the maximum value of the different quantization precisions of the weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook, and /Or, the maximum value of different quantization precisions of weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook.
  • the transceiver unit 520 is further configured to: receive a fourth indication message sent by the terminal device, where the fourth indication message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook,
  • the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook is determined by the terminal device according to the configuration parameters of the seventh layer codebook.
  • the network device 500 may correspond to the execution of the method 300 in the embodiment of the present application, and the above and other operations and/or functions of the various units in the network device 500 are respectively intended to implement FIGS. 1 to 3
  • the corresponding process of the network device in each method in the method is not repeated here.
  • the network device of the embodiment of this application configures the terminal device with different configuration parameters of the multi-layer codebook, so that the terminal device can determine the multi-layer codebook, instead of simply extending the configuration parameters of the single-layer codebook to multiple layers.
  • the configuration parameters of the codebook avoid excessively large codebook dimensions, which can reduce the overhead of the multi-layer codebook, for example, can reduce the overhead of the weighting coefficient matrix of the multi-layer codebook; and appropriately reduce the quantization accuracy of the codebook of some layers , Can effectively improve system efficiency.
  • FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 600 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the application.
  • I won’t repeat it here.
  • FIG. 7 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • FIG. 8 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. As shown in FIG. 8, the communication system 800 includes a terminal device 810 and a network device 820.
  • the terminal device 810 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 820 can be used to implement the corresponding function implemented by the network device in the above method. For the sake of brevity, it will not be omitted here. Repeat.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé destiné à déterminer un paramètre de configuration, ainsi qu'un dispositif terminal et un dispositif de réseau. Le procédé selon l'invention consiste : à recevoir un paramètre de configuration, envoyé par un dispositif de réseau, de chaque couche d'un livre de codes multicouche, au moins un paramètre de configuration parmi les paramètres de configuration du livre de codes multicouche étant réglé pour être différent dans différentes couches de livres de codes, le paramètre de configuration de chaque couche de livre de codes comprenant au moins un des paramètres suivants : le nombre de vecteurs de transformées de Fourier discrète (TFD) de domaine spatial de chaque couche de livre de codes, le nombre de vecteurs TFD de domaine fréquentiel de chaque couche de livre de codes, le nombre d'éléments non nuls maximum dans une matrice de coefficients de pondération de chaque couche de livre de codes, la précision de quantification de la matrice de coefficients de pondération de chaque couche de livre de codes, et la quantité de précision de quantification différente de chaque couche de livre de codes, la précision de quantification comprenant une précision de quantification d'amplitude et/ou une précision de quantification de phase. Dans les modes de réalisation, les procédé, dispositif terminal et dispositif de réseau selon l'invention permettent de réduire le surdébit d'un livre de codes multicouche, ce qui améliore l'efficacité du système.
PCT/CN2019/075294 2019-02-15 2019-02-15 Procédé destiné à déterminer un paramètre de configuration, et dispositif terminal et dispositif de réseau associés WO2020164153A1 (fr)

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CN201980006533.1A CN111837344B (zh) 2019-02-15 2019-02-15 确定配置参数的方法、终端设备和网络设备
PCT/CN2019/075294 WO2020164153A1 (fr) 2019-02-15 2019-02-15 Procédé destiné à déterminer un paramètre de configuration, et dispositif terminal et dispositif de réseau associés

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