WO2020164153A1

WO2020164153A1 - Method for determining configuration parameter, and terminal device and network device

Info

Publication number: WO2020164153A1
Application number: PCT/CN2019/075294
Authority: WO
Inventors: 黄莹沛; 陈文洪; 方昀; 史志华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-08-20
Also published as: CN111837344A; CN111837344B

Abstract

The embodiments of the present application relate to a method for determining a configuration parameter, and a terminal device and a network device. The method comprises: receiving a configuration parameter, sent by a network device, of each layer of codebook of a multi-layer codebook, with at least one configuration parameter in configuration parameters of the multi-layer codebook being set to be different in different layers of codebooks, wherein the configuration parameter of each layer of codebook comprises at least one of the following parameters: the number of spatial-domain discrete Fourier transform (DFT) vectors of each layer of codebook, the number of frequency-domain DFT vectors of each layer of codebook, the number of maximum non-zero elements in a weighting coefficient matrix of each layer of codebook, the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the quantity of different quantization accuracy of each layer of codebook, with the quantization accuracy comprising amplitude quantization accuracy and/or phase quantization accuracy. By means of the method for determining a configuration parameter, and the terminal device and the network device in the embodiments of the present application, the overhead of a multi-layer codebook can be reduced, thereby improving the system efficiency.

Description

Method, terminal equipment and network equipment for determining configuration parameters

Technical field

This application relates to the field of communications, and in particular to methods, terminal devices and network devices for determining configuration parameters.

Background technique

For high-rank (rank) transmission, such as the case of rank>2, if it is under the condition of Single User-Multiple Input Multiple Output (SU-MIMO), the performance gain brought by improving the channel feedback accuracy is very significant. Small, that is, SU-MIMO is not sensitive to feedback channel errors; for Multi-User-Multiple Input Multiple Output (MU-MIMO), it is obvious to improve the channel feedback accuracy gain, but at this time due to actual scenarios The multi-user diversity gain is limited, and the multi-user scheduling gain is not as significant as the low rank; for the base station, rank adaptation is often done, that is, the actual number of ranks scheduled is generally smaller than the rank reported by the user equipment (UE) number. In this case, what quantization accuracy should be used for channel information of different ranks is a problem to be solved urgently at present.

Summary of the invention

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.

In a first aspect, a method for determining configuration parameters is provided, 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. Different layers of codebooks are set differently, wherein 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, 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.

In a second aspect, a method for determining configuration parameters is provided, 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.

In a third aspect, a terminal device is provided, which is used to execute the method in the foregoing first aspect or each of its implementation manners. Specifically, the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided, which is configured to execute the method in the second aspect or its implementation manners. Specifically, the network device includes a functional module for executing the method in the foregoing second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and 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.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and 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.

In a seventh aspect, a chip is provided for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof. Specifically, 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.

In an eighth aspect, a computer-readable storage medium is provided 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.

In a ninth aspect, a computer program product is provided, 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.

In a tenth aspect, a computer program is provided, 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.

Through the above technical solution, 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. , To avoid the codebook dimension being too large, 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.

Description of the drawings

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. 5 is a schematic block diagram of a network 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.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, 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. Optionally, 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.

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. 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". Examples of 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. 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.

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, 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.

Optionally, 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.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

For each layer of the multi-layer codebook, 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. Specifically, the R16 NR type II codebook can be expressed as the following formula (1):

Among them, 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.

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.

Among them, for W ₁ ,

as well as

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. For example, for some elements with larger energy (for example, the first 50%), 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 For the weighting coefficients corresponding to the basis, 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.

For a codebook with rank≤2, for example, a codebook with a rank of 2, 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 codebook method, all using the same parameters, the overhead is too large, for example, when rank=4, the weighting coefficient matrix of each layer

Are equal, it will lead to too much overhead.

Therefore, the embodiment of the present application proposes a method for determining configuration parameters. Through one or more sets of channel feedback related 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. For example, the terminal device may be a terminal device as shown in FIG. 1. As shown in FIG. 2, 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.

Wherein, 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.

It should be understood that 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). Specifically, 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.

In S210, 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 following will describe each configuration parameter in detail.

Optionally, as a first embodiment, it is assumed that the configuration parameters of each layer of codebook include the number L value of the spatial domain DFT vector of the layer of codebook, where the value in formula (1) can be determined correspondingly according to the L value The W ₁ , the W ₁ has a 2L column DFT vector.

Optionally, the L value of the multi-layer codebook can be set to exactly the same value, or can also be set to a different value. For ease of description, it is assumed here that the number L 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 L values are different, and at the same time, the multi-layer codebook At least two layers of codebooks with the same L value may also exist or not exist in the codebook.

In this embodiment, 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. Among them, for the set of spatial domain DFT vectors corresponding to any one layer of codebook, the number of elements (that is, the DFT vectors included in the set of spatial domain DFT vectors) is equal to the number of spatial domain DFT vectors of that layer of codebook 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.

For ease of description, any two-layer codebook in the multi-layer codebook is taken as an example for description. The two-layer codebook may be referred to as a first-layer codebook and a second-layer codebook, respectively. Specifically, the L value of the first layer codebook and the L value of the second layer codebook may be the same or different. If the L value of the first layer codebook is the same as the L value of the second layer codebook, then the elements in the spatial domain DFT vector set of the first layer codebook can be the same as the spatial domain DFT vector set of the second layer codebook The elements are identical, partially identical or completely different. If the L value of the first layer codebook is not the same as the L value of the second layer codebook, assuming that the L value of the first layer codebook is greater than the L value of the second layer codebook, then the space of the second layer codebook 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.

Optionally, after the terminal device determines the spatial domain DFT vector set of each layer of the codebook, 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.

Optionally, if 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, then 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. For example, 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.

For ease of description, a specific example is used for description below. It is assumed here that 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.

Table 1

layerlayer	LL
11	44
22	44
33	22
44	22

Optionally, when the terminal device determines that RI=1 and/or 2, the terminal device can select 4 vectors from the spatial domain DFT vector; when the terminal device determines that RI=3, for layer 1 and layer 2, the terminal device can Select 4 vectors from the spatial domain DFT vector. For layer 3, the terminal device selects 2 DFT vectors; when the terminal device determines RI=4, for layer 1 and layer 2, the terminal device can select 4 from the spatial domain DFT vector For layer 3 and layer 4, the terminal device selects 2 DFT vectors. Here, RI=4 is taken as an example for description.

According to 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. Among them, 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. Then 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.

For the convenience of description, 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 first relationship is: the spatial domain DFT vector set of layer3/4 is a subset of the spatial domain DFT vector set of layer1/2. Specifically, as shown in Table 2, it is assumed that the spatial domain DFT vector in the spatial domain DFT vector set of layer1/2 is selected as shown in the black square in Table 2. If the spatial domain DFT vector set of layer3/4 is layer1/ 2 is a subset of the spatial domain DFT vector set, then 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 3, or the spatial domain DFT of layer3/4 The vector set may also be other subsets, and the embodiment of the present application is not limited to this.

In the case of the first relationship, 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. For example, 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. For example, 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.

Table 2 Table 3

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. If the spatial domain DFT vector set of layer3/4 and the spatial domain DFT of layer1/2 The vector sets partially intersect, then 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 third relationship is: 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. If the spatial domain DFT vector set of layer3/4 and the spatial domain DFT of layer1/2 The vector sets are completely disjoint, so the spatial domain DFT vector selection in the layer3/4 spatial domain DFT vector set can be as shown in the black square in Table 5, or the layer3/4 spatial domain DFT vector set can also be For other disjoint situations, the embodiments of the present application are not limited thereto.

Table 4 Table 5

It should be understood that N1 and N2 in this embodiment represent the number of antenna ports in the horizontal and vertical directions, and O1 and O2 represent the horizontal and vertical dimension beam oversampling configurations, and here O1=O2=4, N1=4, N2=2 It is described as an example, but the embodiment of the present application is not limited to this.

Optionally, as a second embodiment, it is assumed that the configuration parameters of each layer of codebook include 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.

Optionally, 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. For ease of explanation, it is assumed here that 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.

In this embodiment, 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.

For ease of description, here again take any two-layer codebook in the multi-layer codebook as an example. 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. For example, the third layer codebook and the first layer codebook can refer to the same layer Codebook, or codebook of different layers.

Specifically, the M values of the third layer codebook and the fourth layer codebook may be the same or different. If the M values of the third-level codebook and the fourth-level codebook are the same, the elements in the frequency-domain DFT vector set of the third-level codebook can be exactly the same as the elements in the frequency-domain DFT vector set of the fourth-level codebook. Same, partly the same, or completely different. If the M value of the third layer codebook and the fourth layer codebook are not the same, for example, assuming that the M value of the third layer codebook is greater than the M value of the fourth layer codebook, the frequency of the fourth layer codebook The domain DFT vector set 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.

Optionally, after the terminal device determines the frequency domain DFT vector set of each layer of codebook according to the value of M, 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.

Optionally, if 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, 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. For example, 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.

For ease of description, a specific example is used for description below. It is assumed here that 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. 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.

Table 6

layerlayer	MM
11	44
22	44
33	22
44	22

Optionally, when the terminal device determines RI=1 and/or 2, the terminal device may select 4 vectors from the frequency domain DFT vector; when the terminal device determines RI=3, for layer 1 and layer 2, the terminal device may Select 4 vectors from the frequency domain DFT vector. For layer 3, the terminal device selects 2 DFT vectors; when the terminal device determines that RI=4, for layer 1 and layer 2, the terminal device can select 4 from the frequency domain DFT vector For layer 3 and layer 4, the terminal device selects 2 DFT vectors. Here, RI=4 is taken as an example for description.

According to 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. Among them, 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. Then 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.

For the convenience of explanation, 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 first relationship is: the frequency domain DFT vector set of layer3/4 is a subset of the frequency domain DFT vector set of layer1/2. Specifically, as shown in 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. At this time, 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 as shown in Table 8. As shown in the shaded squares, that is, 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 .

In the case of the first relationship, 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. For example, 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. For example, 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.

Table 7

Table 8

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 . If the frequency domain DFT vector set of layer3/4 intersects the frequency domain DFT vector set of layer1/2 partly, then 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.

Table 9

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. 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 . If 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. As shown in the square of, that is, the DFT vectors numbered 2 and 10 are selected, or 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.

Table 10

Optionally, 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. Or 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.

Table 11

Table 12

It should be understood that N3 in this embodiment represents the number of DFT vectors in the frequency domain. Here, N3=13 is taken as an example for description, but the embodiment of the present application is not limited to this.

It should be understood that, in each example of Table 7 to Table 12, L=4 is taken as an example for description, that is, it is assumed that the number of spatial domain DFT vectors of layer1-4 is equal. In combination with the first embodiment, for the case where L is not equal, the second embodiment is also applicable, and will not be listed here.

Optionally, as a third embodiment, it is assumed that 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.

Optionally, 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. For ease of description, it is assumed here that 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.

In this embodiment, 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.

For ease of description, here again take any two-layer codebook in the multi-layer codebook as an example. 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.

Specifically, the K0 value of each layer of the codebook represents the number of the largest non-zero elements in the weighting coefficient matrix. For the weighting coefficient matrix of different layers, 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. When the number of rows and columns of the weighting coefficient matrix of the fifth layer codebook is equal to the number of rows and columns of the weighting coefficient matrix of the sixth layer codebook, the K0 values of the fifth layer codebook and the sixth layer codebook can also be the same or different .

For example, suppose that 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, and 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 If the number is smaller than the number of columns of the weighting coefficient matrix of the sixth-level codebook, the K0 values of the fifth-level codebook and the sixth-level codebook may also be the same or different. For example, it can be set as follows: 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 For any non-zero element in the weighting coefficient matrix, 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.

Optionally, after the terminal device determines the positions of the non-zero elements of the weighting coefficient matrix according to the K0 value according to the maximum number of non-zero elements of the weighting coefficient matrix of each layer, 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.

Optionally, if 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, and the spatial domain DFT vector set of the fifth layer codebook is the sixth layer Is a subset of the spatial domain DFT vector set of the 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.

For ease of description, a specific example is used for description below. It is assumed here that the multi-layer codebook has 4 layer codebooks, which are numbered layer 1-4 respectively. 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.

Table 13

layerlayer	K0K0
11	1616
22	1616
33	88
44	88

According to Table 13, 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. Among them, 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. In this case, 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. In this case, the non-zero element in the weighting coefficient matrix of layer 1/2 The position of the zero element and the position of the non-zero element in the weighting coefficient matrix of layer3/4 may also be selected to be the same or different, and the embodiment of the present application is not limited thereto.

Optionally, as an example, for ease of description, 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. .

Specifically, it is assumed here that 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.

At this time, suppose 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. Among them, the squares filled with dotted shadows represent zero elements, and the other squares filled with shadows ( That is, the square with the same filling method as in Table 7) indicates that the corresponding position in the weighting coefficient matrix is a non-zero element.

Table 14

Similarly, 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. Here, 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.

Table 15

It should be understood that, in the case where the foregoing Table 14 and Table 15 correspond, layer3/4 may also be indicated by a bitmap indicating layer1/2 and another short bitmap. For example, 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 .

Optionally, here, taking the frequency domain DFT vector set of layer3/4 as a subset of the frequency domain DFT vector of layer1/2 as an example, 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. For example, 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 .

It should be understood that the third embodiment is mainly described in conjunction with the corresponding contents of Table 7 and Table 8 in the second embodiment, but the other examples in the second embodiment are also applicable, and will not be listed here.

Optionally, as a fourth embodiment, it is assumed that 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. Among them, 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.

Optionally, 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.

For ease of description, 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.

For example, it is assumed that 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. Specifically, the quantization accuracy of the weighting coefficient matrix of each layer of codebook is shown in Table 16.

Table 16

layerlayer	幅度Amplitude	相位Phase
11	33	33
22	33	33
33	33	22
44	33	22

At this time, on the basis of Table 14 and Table 15, the quantization accuracy of the weighting coefficient matrix of the codebook of layer1-4 is shown in Table 17 and Table 18.

Table 17

Table 18

For another example, for any layer of codebook in the multi-layer codebook, 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.

Optionally, 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.

Correspondingly, 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. In addition, 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.

Specifically, it is assumed that the weighting coefficients corresponding to the frequency domain DFT vectors in the weighting coefficient matrix of each layer of codebook are different, and the quantization accuracy of the weighting coefficient matrix of each layer of codebook is shown in Table 19.

Table 19

layerlayer	个数Number	幅度1Amplitude 1	相位1Phase 1	幅度2Amplitude 2	相位2Phase 2
11	44	33	44	33	33
22	44	33	44	33	33
33	44	33	22	22	22
44	44	33	22	22	22

Among them, the "number" in Table 19 indicates the number of high quantization accuracy of the frequency domain DFT vector in the corresponding weighting coefficient matrix. For example, for layer 1/2, the quantization accuracy of the frequency domain DFT vector includes 3+4=7 and There are two types of 3+3=6, and the number 4 means that the number of 7 bits is 4. Assuming that the quantization accuracy of the frequency-domain DFT vector labeled 0 is set to 7-bit quantization, the quantization accuracy of the weighted coefficient matrix of layer 1/2 is set as shown in Table 20.

Table 20

Similarly, referring to the setting methods of the quantization precision of the weighting coefficient matrix of layer 1/2 shown in Table 19 and Table 20, the setting of the quantization precision of the weighting coefficient matrix of layer 3/4 is shown in Table 21.

Table 21

For another example, still take any layer of codebook in the multilayer codebook as an example, that is, the seventh layer of codebook. The quantization accuracy of the weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook may also be set to be different. Correspondingly, the configuration parameters of the seventh layer 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.

Correspondingly, 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. In addition, 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.

Specifically, it is assumed that the weighting coefficients corresponding to the spatial domain DFT vector in the weighting coefficient matrix of each layer of codebook are different, and the quantization accuracy of the weighting coefficient matrix of each layer of codebook is shown in Table 22.

Table 22

layerlayer	KK	幅度1Amplitude 1	相位1Phase 1	幅度2Amplitude 2	相位2Phase 2
11	22	33	44	33	33
22	22	33	44	33	33
33	11	33	44	33	33
44	11	33	44	33	33

Among them, "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. For example, for layer 1/2, the quantization accuracy includes 3+4=7 and 3+3 =6 two kinds, K=2 means that the number of rows with the maximum quantization accuracy is 2, that is, the weighting coefficient with quantization accuracy of 7 has two rows. For example, the quantization accuracy of the weighting coefficient matrix of layer 1/2 can be set as shown in Table 23.

Table 23

Similarly, referring to the setting methods of the quantization precision of the weighting coefficient matrix of layer1/2 shown in Table 22 and Table 23, the setting of the quantization precision of the weighting coefficient matrix of layer3/4 is shown in Table 24.

Table 24

It should be understood that because the feedback accuracy of different layers is different, a certain order needs to be used for feedback and reception between the terminal device and the network device. For example, for the above embodiment, that is, when layer 1/2 adopts high-precision configuration and layer 3/4 adopts low-precision configuration, it can be agreed that 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.

It should be understood that the above four embodiments respectively describe the setting modes of different configuration parameters. The four embodiments can be applied individually or in combination with each other. The following will combine several specific embodiments to describe the combination of the above four embodiments. Several situations of use.

Optionally, as the fifth embodiment, the above-mentioned first embodiment and the second embodiment may be used in combination. For example, according to the settings of the values of L and M in Table 1 and Table 6, assuming that Table 2, Table 3, Table 7 and Table 8 are combined, the results shown in Table 25 and Table 26 can be obtained respectively .

Table 25

Table 26

For another example, in accordance with the settings of the values of L and M in Table 1 and Table 6, assuming that the corresponding embodiments of Table 2 and Table 5 are combined, and then referring to the selection in Table 7, the results shown in Table 25 can be obtained; and For layer3/4, if you refer to the selection in Table 8, you can obtain the results shown in Table 27, and if you refer to the selection in Table 10, you can obtain the results shown in Table 28.

Table 27

Table 28

Optionally, as the sixth embodiment, the above-mentioned first embodiment, second embodiment, and third embodiment may also be used in combination. For example, according to the settings of the L value, M value and K0 value in Table 1, Table 6, and Table 13, assuming that the corresponding embodiments of Table 2, Table 3, Table 7 and Table 14 are combined, 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.

Table 29

Table 30

Optionally, as other embodiments, referring to the above-mentioned combination manner, the above-mentioned embodiment may also be used in combination with the fourth and fifth embodiments. For the sake of brevity, details are not described herein again.

Therefore, in the method for determining configuration parameters in the embodiment of the present application, 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.

The foregoing describes in detail the method for determining configuration parameters according to an embodiment of the present application from the perspective of a terminal device with reference to FIGS. 1 to 2. The following will describe determining configuration parameters according to an embodiment of the present application from the perspective of a network device with reference to FIG. 3 Methods.

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. Specifically, for example, the network device is the network device in FIG. 1. As shown in FIG. 3, 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.

Wherein, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, the method 300 further includes: receiving 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, and The set of frequency domain DFT vectors 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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, and 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, the configuration parameters of the seventh layer codebook include: the maximum value of 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, 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.

Optionally, as an embodiment, 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.

Therefore, in the method for determining configuration parameters in the embodiment of the present application, the network device 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 changing the configuration parameters of the single-layer codebook Fully extend to the configuration parameters of the multi-layer codebook to avoid excessively large codebook dimensions and reduce the overhead of the multi-layer codebook. For example, it can reduce the overhead of the weighting coefficient matrix of the multi-layer codebook; and appropriately reduce the cost of some layers. The quantization accuracy of the codebook can effectively improve the system efficiency.

It should be understood that, in the various embodiments of the present application, 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.

In addition, the term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and both A and B exist. There are three cases of B alone. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

The method for determining configuration parameters according to the embodiments of the present application is described in detail above with reference to Figs. 1 to 3, and the terminal equipment and network equipment according to the embodiments of the present application will be described below in conjunction with Figs. 4 to 8.

As shown in FIG. 4, the terminal device 400 according to the embodiment of the present application includes: a processing unit 410 and a transceiver unit 420. Specifically, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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, and the transceiver unit 420 is further configured to: Send the first information in the first indication message, the first information is used to indicate the spatial domain DFT vector set of the first layer codebook; send the second information in the first indication message to the network device, the first information The second information is used to indicate that the spatial domain DFT vector set of the first layer codebook includes a part of the spatial domain DFT vector set of the second layer codebook.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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, and 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, the transceiver unit 420 is further configured to: send a third indication message to the network 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.

Optionally, as an embodiment, 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 .

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

It should be understood that the terminal device 400 according to the embodiment of the present application 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. For the sake of brevity, the corresponding process of the terminal device in each method in the method will not be repeated here.

Therefore, 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. In 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.

As shown in FIG. 5, the network device 500 according to the embodiment of the present application includes: a processing unit 510 and a transceiver unit 520. Specifically, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

Optionally, as an embodiment, 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.

It should be understood that the network device 500 according to the embodiment of the present application 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 For the sake of brevity, the corresponding process of the network device in each method in the method is not repeated here.

Therefore, 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. In 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.

Optionally, as shown in FIG. 6, 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.

Optionally, as shown in FIG. 6, 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.

Optionally, 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. .

Optionally, 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. For the sake of brevity , 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.

Optionally, as shown in FIG. 7, the chip 700 may further include a memory 720. Wherein, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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. For brevity, details are not described herein again.

Optionally, 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. For brevity, here is No longer.

It should be understood that 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.

Wherein, the terminal device 810 can be used to implement the corresponding function implemented by the terminal device in the above method, and 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.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, 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. 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.

It can be understood that 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. Among them, 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. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (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 Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, 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.

Optionally, 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. For brevity, here No longer.

Optionally, 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.

Optionally, 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. For the sake of brevity, it is not here. Repeat it again.

Optionally, 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.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When 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. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When 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.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, 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. In addition, 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.

In addition, the functional units 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.

If 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. Based on this understanding, 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 .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A method for determining configuration parameters is characterized in that it includes:

Receiving configuration parameters of each layer of the codebook in the multi-layer codebook sent by the network device, where at least one configuration parameter in the configuration parameters of the multi-layer codebook is set to be different in different layer codebooks,

Wherein, the configuration parameter of 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, and the frequency domain DFT of each layer of codebook The number of vectors, the number of the largest non-zero elements 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 accuracy includes amplitude quantization accuracy and/or phase quantization accuracy.
The method according to claim 1, wherein 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 said multi-layer codebook The number is different.
The method of claim 2, wherein the method further comprises:

According to the number of spatial domain DFT vectors of each layer of codebook, the spatial domain DFT vector set corresponding to each layer of codebook is determined, and the spatial domain of the multiple spatial domain DFT vector sets corresponding to the multi-layer codebook is determined The DFT vectors all belong to the same orthogonal set.
The method according to claim 3, wherein the method further comprises:

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 method according to claim 4, wherein the spatial domain DFT vector set of the first-level codebook and the spatial domain DFT vector set of the second-level 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 layer codebook,

Wherein, the first-layer codebook and the second-layer codebook are any two-layer codebooks in the multi-layer codebook.
The method according to claim 5, wherein 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 sending a first indication message to the network device includes:

Sending the first information in the first indication message to the network device, where the first information is used to indicate a spatial domain DFT vector set of the first layer codebook;

The second information in the first instruction message is sent to the network device, where the second information is used to indicate that the spatial domain DFT vector set of the first layer codebook includes the spatial domain of the second layer codebook Part of the spatial domain DFT vector set in the DFT vector set.
The method according to any one of claims 1 to 6, wherein the configuration parameters of each layer of codebook include the number of frequency domain DFT vectors of each layer of codebook, and the multi-layer codebook The number of DFT vectors in the frequency domain is different.
The method according to claim 7, wherein the method further comprises:

According to the number of frequency domain DFT vectors of each layer of codebook, a set of frequency domain DFT vectors corresponding to each layer of codebook is determined.
The method according to claim 8, wherein the method further comprises:

Sending 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 method according to claim 9, wherein 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 layer codebook,

Wherein, the third-layer codebook and the fourth-layer codebook are any two-layer codebooks in the multi-layer codebook.
The method according to claim 10, wherein 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 sending a second indication message to the network device includes:

Sending the third information in the second indication message to the network device, where the third information is used to indicate a frequency domain DFT vector set of the third layer codebook;

The fourth information in the second instruction message is sent to the network device, where the fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook includes the frequency of the second layer codebook. Part of the frequency domain DFT vector set in the domain DFT vector set.
The method according to any one of claims 1 to 11, wherein 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 number of the largest non-zero elements of the weighting coefficient matrix of the multi-layer codebook is different.
The method of claim 12, wherein the method further comprises:

The positions of the non-zero elements in the weighting coefficient matrix of each layer of codebook are determined according to the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook.
The method of claim 13, wherein the method further comprises:

Sending a third indication message to the network device, 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 method according to claim 14, wherein 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, and the spatial domain of the fifth layer codebook is The DFT vector set is a subset of the spatial domain DFT vector set of the sixth layer codebook, and the positions of the non-zero elements of the weighting coefficient matrix of the fifth layer codebook and the weighting coefficient matrix of the sixth layer codebook The positions of the non-zero elements of are the same, where the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
The method according to claim 15, wherein the sending a third indication message to the network device comprises:

The fifth information in the third indication information is sent to the network device, where 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 uses Determine the positions of the non-zero elements of the weighting coefficient matrix of the fifth layer codebook and the positions of the non-zero elements of the weighting coefficient matrix of the sixth layer codebook at the network device.
The method according to any one of claims 1 to 16, wherein the configuration parameters of each layer of codebook include the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the The quantization precision of the weighting coefficient matrix is different.
The method according to claim 17, wherein the weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook have different quantization precisions, and/or,

The quantization precision of the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different,

Wherein, the seventh-layer codebook is any one-layer codebook in the multi-layer codebook.
The method according to claim 18, wherein the configuration parameters of the seventh layer codebook comprise: different quantization precisions of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook The number of the maximum quantization precision in the weighting coefficient matrix of the seventh-layer codebook, and/or the number of the maximum quantization precision in the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook.
The method of claim 19, wherein the method further comprises:

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 method of claim 20, wherein the method further comprises:

Sending 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.
A method for determining configuration parameters is characterized in that it includes:

Sending configuration parameters of each layer of the codebook in the multi-layer codebook to the terminal device, where at least one configuration parameter in the configuration parameters of the multi-layer codebook is set to be different in different layers of the codebook,

Wherein, the configuration parameter of 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, and the frequency domain DFT of each layer of codebook The number of vectors, the number of the largest non-zero elements 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 accuracy includes amplitude quantization accuracy and/or phase quantization accuracy.
The method according to claim 22, wherein 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 said multi-layer codebook The number is different.
The method of claim 23, wherein the method further comprises:

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, and the spatial domain DFT vector set of each layer of codebook is The terminal device is determined according to the number of spatial domain DFT vectors of each layer of codebook, and the spatial domain DFT vectors of the multiple spatial domain DFT vector sets corresponding to the multi-layer codebook all belong to the same orthogonal set.
The method according to claim 24, wherein the spatial domain DFT vector set of the first-level codebook and the spatial domain DFT vector set of the second-level 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 layer codebook,

Wherein, the first-layer codebook and the second-layer codebook are any two-layer codebooks in the multi-layer codebook.
The method according to claim 25, wherein the receiving the first indication message sent by the terminal device comprises:

Receiving first information in the first indication message sent by the terminal device, where the first information is used to indicate a spatial domain DFT vector set of the first layer codebook;

Receive 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 space of the first layer codebook A subset of the domain DFT vector set.
The method according to any one of claims 22 to 26, wherein the configuration parameters of each layer of codebook include the number of frequency domain DFT vectors of each layer of codebook, and the multi-layer codebook The number of DFT vectors in the frequency domain is different.
The method of claim 27, wherein the method further comprises:

Receive a second instruction message sent by the terminal device, where the second instruction message is used to indicate a plurality of frequency domain DFT vector sets corresponding to the multi-layer codebook, and a frequency domain DFT vector set corresponding to each layer of the codebook It is determined by the terminal device according to the number of frequency domain DFT vectors of each layer of the codebook.
The method according to claim 28, wherein 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 layer codebook,

Wherein, the third-layer codebook and the fourth-layer codebook are any two-layer codebooks in the multi-layer codebook.
The method according to claim 29, wherein the receiving a second indication message sent by the terminal device comprises:

Receiving third information in the second indication message sent by the terminal device, where the third information is used to indicate a frequency domain DFT vector set of the third layer codebook;

Receive 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 of the third layer codebook A subset of the domain DFT vector set.
The method according to any one of claims 22 to 30, wherein 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 number of the largest non-zero elements of the weighting coefficient matrix of the multi-layer codebook is different.
The method of claim 31, wherein the method further comprises:

Receive a third instruction message sent by the terminal device, where the third instruction message is used to indicate the positions of non-zero elements in multiple weighting coefficient matrices corresponding to the multi-layer codebook, and the weighting coefficient matrix of each layer of codebook The position of the non-zero element in the middle 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 the codebook.
The method according to claim 32, wherein 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, and the spatial domain of the fifth layer codebook is The DFT vector set is a subset of the spatial domain DFT vector set of the sixth layer codebook, and the positions of the non-zero elements of the weighting coefficient matrix of the fifth layer codebook and the weighting coefficient matrix of the sixth layer codebook The positions of the non-zero elements of are the same, where the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
The method according to claim 33, wherein the receiving a third indication message sent by the terminal device comprises:

Receiving fifth information in the third indication information sent by the terminal device, where the fifth information includes a bitmap of the positions of non-zero elements of the weighting coefficient matrix of the fifth layer codebook;

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 method according to any one of claims 22 to 34, wherein the configuration parameters of the codebook for each layer include the quantization accuracy of the weighting coefficient matrix of the codebook for each layer, and the The quantization precision of the weighting coefficient matrix is different.
The method according to claim 35, wherein 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 quantization precision of the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different,

Wherein, the seventh-layer codebook is any one-layer codebook in the multi-layer codebook.
The method according to claim 36, wherein the configuration parameters of the seventh layer codebook comprise: different quantization precisions of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook The maximum value in, 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 method of claim 37, wherein the method further comprises:

Receive a fourth instruction message sent by the terminal device, where the fourth instruction message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook, and the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook It is determined by the terminal device according to the configuration parameters of the seventh layer codebook.
A terminal device, characterized in that it comprises:

The transceiver unit is configured to receive configuration parameters of each layer of the codebook in the multi-layer codebook sent by the network device, where at least one of the configuration parameters of the multi-layer codebook is set to be different in different layer codebooks,

Wherein, the configuration parameter of 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, and the frequency domain DFT of each layer of codebook The number of vectors, the number of the largest non-zero elements 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 accuracy includes amplitude quantization accuracy and/or phase quantization accuracy.
The terminal device according to claim 39, wherein the configuration parameters of each layer of the codebook include the number of spatial domain DFT vectors of the each layer of codebook, and the spatial domain DFT vectors of the multi-layer codebook The number of is not the same.
The terminal device according to claim 40, wherein the terminal device further comprises:

The processing unit is configured to determine, according to the number of spatial domain DFT vectors of each layer of codebook, a spatial domain DFT vector set corresponding to each layer of codebook, and multiple spatial domain DFT vectors corresponding to said multilayer codebook The spatial domain DFT vectors in the set all belong to the same orthogonal set.
The terminal device according to claim 41, wherein the transceiver unit 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 terminal device according to claim 42, wherein the spatial domain DFT vector set of the first-level codebook does not intersect with the spatial domain DFT vector set of the second-level codebook, 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 layer codebook,

Wherein, the first-layer codebook and the second-layer codebook are any two-layer codebooks in the multi-layer codebook.
The terminal device according to claim 43, wherein 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 transceiver unit is also used for:

Sending the first information in the first indication message to the network device, where the first information is used to indicate a spatial domain DFT vector set of the first layer codebook;

The second information in the first instruction message is sent to the network device, where the second information is used to indicate that the spatial domain DFT vector set of the first layer codebook includes the spatial domain of the second layer codebook Part of the spatial domain DFT vector set in the DFT vector set.
The terminal device according to any one of claims 39 to 44, wherein the configuration parameter of each layer of codebook includes the number of frequency domain DFT vectors of each layer of codebook, and the multi-layer code The number of DFT vectors in the frequency domain is different.
The terminal device according to claim 45, wherein the terminal device further comprises:

The processing unit 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 terminal device according to claim 46, wherein the transceiver unit is further configured to:

Sending 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 terminal device according to claim 47, wherein 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 layer codebook,

Wherein, the third-layer codebook and the fourth-layer codebook are any two-layer codebooks in the multi-layer codebook.
The terminal device according to claim 48, wherein 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 is also used for:

Sending the third information in the second indication message to the network device, where the third information is used to indicate a frequency domain DFT vector set of the third layer codebook;

The fourth information in the second instruction message is sent to the network device, where the fourth information is used to indicate that the frequency domain DFT vector set of the fourth layer codebook includes the frequency of the second layer codebook. Part of the frequency domain DFT vector set in the domain DFT vector set.
The terminal device according to any one of claims 39 to 49, wherein 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, so The number of the largest non-zero elements of the weighting coefficient matrix of the multi-layer codebook is different.
The terminal device of claim 50, wherein the terminal device further comprises:

The processing unit is configured to determine the positions of non-zero elements in the weighting coefficient matrix of each layer of codebook according to the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook.
The terminal device according to claim 51, wherein the transceiver unit is further configured to:

Sending a third indication message to the network device, 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 according to claim 52, wherein 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, and the space of the fifth layer codebook is The domain DFT vector set is a subset of the spatial domain DFT vector set of the sixth-level codebook, and the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the weighting coefficients of the sixth-level codebook The positions of the non-zero elements of the matrix correspond to the same, wherein the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
The terminal device according to claim 53, wherein the transceiver unit is further configured to:

The fifth information in the third indication information is sent to the network device, where 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 uses Determine the positions of the non-zero elements of the weighting coefficient matrix of the fifth layer codebook and the positions of the non-zero elements of the weighting coefficient matrix of the sixth layer codebook at the network device.
The terminal device according to any one of claims 39 to 54, wherein the configuration parameters of each layer of codebook include the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the multi-layer codebook The quantization precision of the weighting coefficient matrix is different.
The terminal device according to claim 55, wherein 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 quantization precision of the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different,

Wherein, the seventh-layer codebook is any one-layer codebook in the multi-layer codebook.
The terminal device according to claim 56, wherein the configuration parameters of the seventh layer codebook comprise: different quantization of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook The number of maximum quantization precision in precision, and/or,

The number of the maximum quantization precisions among the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook.
The terminal device of claim 57, wherein the terminal device further comprises:

The processing unit 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 terminal device according to claim 58, wherein the transceiver unit is further configured to:

Sending 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.
A network device, characterized by comprising:

The transceiver unit is configured to send 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 set to be different in different layer codebooks,

Wherein, the configuration parameter of 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, and the frequency domain DFT of each layer of codebook The number of vectors, the number of the largest non-zero elements 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 accuracy includes amplitude quantization accuracy and/or phase quantization accuracy.
The network device according to claim 60, wherein the configuration parameters of each layer of the codebook include the number of spatial domain DFT vectors of the each layer of codebook, and the spatial domain DFT vectors of the multi-layer codebook The number of is not the same.
The network device according to claim 61, wherein the transceiver unit 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, and the spatial domain DFT vector set of each layer of codebook is The terminal device is determined according to the number of spatial domain DFT vectors of each layer of codebook, and the spatial domain DFT vectors of the multiple spatial domain DFT vector sets corresponding to the multi-layer codebook all belong to the same orthogonal set.
The network device according to claim 62, wherein the spatial domain DFT vector set of the first-level codebook does not intersect with the spatial domain DFT vector set of the second-level codebook, 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 layer codebook,

Wherein, the first-layer codebook and the second-layer codebook are any two-layer codebooks in the multi-layer codebook.
The network device according to claim 63, wherein the transceiver unit is configured to:

Receiving first information in the first indication message sent by the terminal device, where the first information is used to indicate a spatial domain DFT vector set of the first layer codebook;

Receive 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 space of the first layer codebook A subset of the domain DFT vector set.
The network device according to any one of claims 60 to 64, wherein the configuration parameter of each layer of codebook includes the number of frequency domain DFT vectors of each layer of codebook, and the multi-layer code The number of DFT vectors in the frequency domain is different.
The network device according to claim 65, wherein the transceiver unit is further configured to:

Receive a second instruction message sent by the terminal device, where the second instruction message is used to indicate a plurality of frequency domain DFT vector sets corresponding to the multi-layer codebook, and a frequency domain DFT vector set corresponding to each layer of the codebook It is determined by the terminal device according to the number of frequency domain DFT vectors of each layer of the codebook.
The network device according to claim 66, wherein 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 layer codebook,

Wherein, the third-layer codebook and the fourth-layer codebook are any two-layer codebooks in the multi-layer codebook.
The network device according to claim 67, wherein the transceiver unit is further configured to:

Receiving third information in the second indication message sent by the terminal device, where the third information is used to indicate a frequency domain DFT vector set of the third layer codebook;

Receive 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 of the third layer codebook A subset of the domain DFT vector set.
The network device according to any one of claims 60 to 68, wherein the configuration parameter of each layer of codebook includes the number of the largest non-zero elements of the weighting coefficient matrix of each layer of codebook, so The number of the largest non-zero elements of the weighting coefficient matrix of the multi-layer codebook is different.
The network device according to claim 69, wherein the transceiver unit is further configured to:

Receive a third instruction message sent by the terminal device, where the third instruction message is used to indicate the positions of non-zero elements in multiple weighting coefficient matrices corresponding to the multi-layer codebook, and the weighting coefficient matrix of each layer of codebook The position of the non-zero element in the middle 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 the codebook.
The network device according to claim 70, wherein 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, and the space of the fifth layer codebook is The domain DFT vector set is a subset of the spatial domain DFT vector set of the sixth-level codebook, and the positions of the non-zero elements of the weighting coefficient matrix of the fifth-level codebook and the weighting coefficients of the sixth-level codebook The positions of the non-zero elements of the matrix correspond to the same, wherein the fifth-level codebook and the sixth-level codebook are any two-level codebooks in the multi-layer codebook.
The network device according to claim 71, wherein the transceiver unit is further configured to:

Receiving fifth information in the third indication information sent by the terminal device, where the fifth information includes a bitmap of the positions of non-zero elements of the weighting coefficient matrix of the fifth layer codebook;

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 network device according to any one of claims 60 to 72, wherein the configuration parameters of each layer of codebook include the quantization accuracy of the weighting coefficient matrix of each layer of codebook, and the multi-layer codebook The quantization precision of the weighting coefficient matrix is different.
The network device according to claim 73, wherein 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 quantization precision of the weighting coefficients corresponding to different frequency domain DFT vectors in the weighting coefficient matrix of the seventh layer codebook is different,

Wherein, the seventh-layer codebook is any one-layer codebook in the multi-layer codebook.
The network device according to claim 74, wherein the configuration parameters of the seventh-level codebook comprise: different quantization of weighting coefficients corresponding to different spatial domain DFT vectors in the weighting coefficient matrix of the seventh-level codebook The maximum value in accuracy, 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 network device according to claim 75, wherein the transceiver unit is further configured to:

Receive a fourth instruction message sent by the terminal device, where the fourth instruction message is used to indicate the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook, and the quantization accuracy of the weighting coefficient matrix of the seventh layer codebook It is determined by the terminal device according to the configuration parameters of the seventh layer codebook.
A terminal device, comprising: 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, and execute any one of claims 1 to 21 The method of determining configuration parameters described in one.
A network device, comprising: 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, and execute any of claims 22 to 38 The method of determining configuration parameters described in one.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the configuration parameter determination device according to any one of claims 1 to 21 method.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the configuration parameter determination device according to any one of claims 22 to 38 method.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method for determining configuration parameters according to any one of claims 1 to 21.
A computer-readable storage medium, characterized in that it is used to store a computer program that causes a computer to execute the method for determining configuration parameters according to any one of claims 22 to 38.
A computer program product, characterized by comprising computer program instructions that cause a computer to execute the method for determining configuration parameters according to any one of claims 1 to 21.
A computer program product, characterized by comprising computer program instructions that cause a computer to execute the method for determining configuration parameters according to any one of claims 22 to 38.
A computer program, wherein the computer program causes a computer to execute the method for determining configuration parameters according to any one of claims 1 to 21.
A computer program, wherein the computer program causes a computer to execute the method for determining configuration parameters according to any one of claims 22 to 38.