WO2022183563A1 - Codebook reporting method, terminal device, and network device - Google Patents

Codebook reporting method, terminal device, and network device Download PDF

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Publication number
WO2022183563A1
WO2022183563A1 PCT/CN2021/085408 CN2021085408W WO2022183563A1 WO 2022183563 A1 WO2022183563 A1 WO 2022183563A1 CN 2021085408 W CN2021085408 W CN 2021085408W WO 2022183563 A1 WO2022183563 A1 WO 2022183563A1
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WO
WIPO (PCT)
Prior art keywords
csi
resource
terminal device
resources
port
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PCT/CN2021/085408
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French (fr)
Chinese (zh)
Inventor
黄莹沛
陈文洪
史志华
田杰娇
方昀
Original Assignee
Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202180092945.9A priority Critical patent/CN116868515A/en
Publication of WO2022183563A1 publication Critical patent/WO2022183563A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a codebook reporting method, a terminal device, and a network device.
  • a terminal device may report channel state information (Channel State Information, CSI) on a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), and the CSI may include frequency Domain-spatial codebook related information, for example, the DFT vectors of the L spatial beams of W 1 of the frequency domain-spatial codebook, the DFT basis vectors of the M frequency domains of W f , and the quantized etc., the codebook overhead is relatively large, therefore, how to reduce the CSI-RS resource overhead is an urgent problem to be solved.
  • CSI Channel State Information
  • CSI-RS Channel State Information Reference Signal
  • the present application provides a codebook reporting method, terminal device and network device, which are beneficial to reduce CSI-RS resource overhead.
  • a first aspect provides a codebook reporting method, comprising: a terminal device receiving a channel state information reference signal CSI-RS resource set sent by a network device, wherein the CSI-RS resource set includes Ks CSI-RS resources , each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1; the terminal device determines the channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, Wherein, the CSI includes a precoding matrix indication PMI; the terminal device reports the CSI to the network device.
  • a codebook reporting method including: a network device sending a channel state information reference signal CSI-RS resource set to a terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, Each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1; the network device reports channel state information CSI to the terminal device, and the CSI is based on the CSI-RS resource Where the set and/or CSI-related parameters are determined, the CSI includes a precoding matrix indicating PMI.
  • a terminal device for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • a network device for executing the method in the second aspect or each of its implementations.
  • the network device includes functional modules for executing the methods in the second aspect or the respective implementation manners thereof.
  • a terminal device including a processor and a memory.
  • the memory is used for storing a computer program
  • the processor is used for calling and running the computer program stored in the memory to execute the method in the above-mentioned first aspect or each implementation manner thereof.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or each of its implementations.
  • 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.
  • the chip includes: a processor for invoking and running a computer program from a memory, so that a device in which the device is installed executes any one of the above-mentioned first to second aspects or each of its implementations method.
  • a computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method in any one of the above-mentioned first aspect to the second aspect or each of its implementations.
  • a computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the implementations thereof.
  • a computer program which, when run on a computer, causes the computer to perform the method in any one of the above-mentioned first to second aspects or the respective implementations thereof.
  • the network device can configure the terminal device with a set of CSI-RS resources, where the set of CSI-RS resources includes at least one CSI-RS resource, and the terminal device can be based on the set of CSI-RS resources configured by the network device and/or CSI-related parameters are determined, CSI is determined, and CSI is further reported to the network device through the CSI-RS resources in the CSI-RS resource set, which can reduce the CSI-RS resource overhead.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic interaction diagram of a method for reporting a codebook according to an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • Wireless Fidelity Wireless Fidelity
  • WiFi fifth-generation communication
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA standalone
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • a mobile phone Mobile Phone
  • a tablet computer Pad
  • a computer with a wireless transceiver function a virtual reality (Virtual Reality, VR) terminal device
  • augmented reality (Augmented Reality, AR) terminal Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc.
  • the network device may also be a base station set in a location such as land or water.
  • a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (
  • the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • Pico cell Femto cell (Femto cell), etc.
  • These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • 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 referred to as a communication terminal, a terminal).
  • the network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • a device having a communication function in the network/system may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 with a communication function, 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, a mobility management entity, etc., which are not limited in this embodiment of the present application.
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • corresponding may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
  • predefinition may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • predefined may refer to the definition in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.
  • the frequency domain-space codebook (also known as the NR type (type) II codebook, or the frequency domain-space joint codebook) is in the frequency domain. Domain (each subband) is independently coded. Due to the high spatial quantization accuracy, the total feedback amount is too large. By feeding back the frequency domain-spatial joint codebook, the feedback amount can be greatly saved under the condition of ensuring the NR performance.
  • the frequency domain-spatial codebook can be expressed as:
  • W represents the frequency domain-spatial codebook
  • W 1 represents the discrete Fourier transform (Discrete fourier transformation, DFT) vectors of 2L spatial beams (beams)
  • W f represents the DFT basis vectors of M frequency domains.
  • W 1 can be represented by 2N 1 N 2 *2L, where N 1 is the number of ports in the vertical direction, and N 2 is the number of ports in the horizontal direction. It can be represented by 2L*M, and the value of 2L is The number of rows, M is the number of columns. It can be represented by M*N 3 , where N 3 is the number of DFT basis vectors in the frequency domain.
  • the content of the channel information (such as Channel State Information (CSI)) reported to the network device includes: DFT vectors of the L spatial beams of W 1 , W The M frequency-domain DFT basis vectors of f , and the quantized The network device obtains the downlink CSI of each layer through the product of the three.
  • CSI Channel State Information
  • the base station obtains the statistical characteristics of uplink space and delay through the uplink Sounding Reference Signal (SRS), and determines the spatial and frequency domains.
  • the precoding matrix or the joint precoding matrix is used to precode the channel state information reference signal (Channel State Information Reference Signal, CSI-RS).
  • the terminal device estimates the CSI-RS and selects one or more ports, and reports the port's Amplitude and phase information.
  • CSI-RS Channel State Information Reference Signal
  • the terminal device estimates the CSI-RS and selects one or more ports, and reports the port's Amplitude and phase information.
  • the dimension of Wi is f ⁇ Nt
  • f is the size of frequency domain precoding
  • Nt is the number of antennas, which is calculated by the base station.
  • the signal sent by the originator is
  • the existing codebook does not consider the joint distribution of multiple-input multiple-output (MIMO) channel space and delay, and the codebook overhead is relatively large.
  • MIMO multiple-input multiple-output
  • the CSI is reported on the resource, and the CSI includes codebook related information. Therefore, how to reduce the CSI-RS resource overhead is an urgent problem to be solved.
  • FIG. 2 is a schematic interaction diagram of a codebook reporting method 200 according to an embodiment of the present application. As shown in FIG. 2 , the method 200 includes the following contents:
  • a terminal device receives a channel state information reference signal CSI-RS resource set sent by a network device, where the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port , where Ks is an integer greater than or equal to 1;
  • the terminal device determines channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
  • the terminal device reports the CSI to the network device.
  • the network device may configure the CSI-RS resource set for the terminal device through high-layer signaling (eg, radio resource control (Radio Resource Control, RRC) signaling).
  • high-layer signaling eg, radio resource control (Radio Resource Control, RRC) signaling.
  • the CSI related parameters include higher layer parameters and/or predefined parameters.
  • the CSI-related parameters may be parameters configured by the network device, or fixed parameters.
  • the CSI-related parameters may include any parameters used to determine CSI, and the parameters that may be included in the CSI-related parameters will be described with reference to subsequent embodiments.
  • the Ks CSI-RS resources have the same density.
  • the density of the CSI-RS resources is the CSI-RS frequency density of each CSI-RS port of each Physical Resource Block (Physical Resource Block, PRB).
  • the overhead of CSI-RS resources is positively related to the number of ports and the density of CSI-RS resources, that is, the more ports, the greater the overhead, and the greater the density, the greater the overhead, so it can be reduced by designing the number of ports of CSI-RS resources CSI-RS density to reduce CSI-RS overhead.
  • the density of the Ks CSI-RS resources is 0.25, which is beneficial to reduce the CSI-RS resource overhead.
  • the density of the Ks CSI-RS resources is 0.25, and only the total number of ports used for the Ks CSI-RS resources is X, for example, X is ⁇ 32 ⁇ , ⁇ 32, 24 ⁇ , ⁇ 32,24,16 ⁇ one of. In other words, the density of the Ks CSI-RS resources is 0.25 only when the total number of ports of the Ks CSI-RS resources is X.
  • the number of the Ks CSI-RS resources is determined according to the density of the Ks CSI-RS resources.
  • the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
  • the D is a high-level parameter, or the D is a predefined parameter.
  • the D may be configured by the network device, or a fixed parameter, for example, D is 0.25, 0.5, and so on.
  • the CSI-RS related parameters may include the parameter D.
  • resource block offsets (rb-offsets) of the Ks CSI-RS resources are different. That is, the Ks CSI-RS resources can be distinguished by frequency division multiplexing.
  • the density of the Ks CSI-RS resources is 0.5, and the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero (that is, the first CSI-RS resource corresponds to even resource block RB), the resource block offset of the second CSI-RS resource is 1 (that is, the second CSI-RS resource corresponds to an odd-numbered resource block RB).
  • the density of the Ks CSI-RS resources is 0.25
  • the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero
  • the resource block offset of the second CSI-RS resource is zero.
  • the resource block offset is 1, the resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
  • all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
  • Ks is 4, the total number of ports of the 4 CSI-RS resources is 32, and the number of ports of each CSI-RS resource may be 8.
  • all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports. It should be understood that the different number of CSI-RS ports here does not mean that the number of CSI-RS ports is different for every two CSI-RS resources, but means that there may be different numbers of CSI-RS ports in the CSI-RS resource set. CSI-RS resources.
  • Ks is 4, the total number of ports of the 4 CSI-RS resources is 32, and the number of ports of each CSI-RS resource can be 16, 8, 4, 4 in sequence.
  • the 4 CSI-RS resources The resources may include 4 CSI-RS resources with a density of 0.25.
  • Ks is 2
  • the total number of ports of the two CSI-RS resources is 48
  • the number of ports of each CSI-RS resource may be 32 or 16.
  • the two CSI-RS resources may include 2 CSI-RS resources with a density of 0.5.
  • the number of CSI-RS ports included in the CSI-RS resources in the CSI-RS resource set is a first value, and the first value is 16 and/or 8.
  • the first value may be determined according to a high-level parameter or a predefined parameter.
  • the first value is a fixed value, which is 16 or 8, or the first value is one of 16 and 8.
  • the Ks CSI-RS resources include 2 CSI-RS resources with a density of 0.5, and the total number of ports only used for the Ks CSI-RS resources is a second value, and the second value is at least one of 32, 24, and 16.
  • the second value may be determined according to a high-level parameter or a predefined parameter.
  • the second value is a fixed value
  • the fixed value is 32 or 16 or 24, or the second value is one of 32, 24 and 16.
  • the number of CSI-RS ports included in each CSI-RS resource is 8.
  • the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources, the total number of ports is 32, and 3 CSI-RS resources with a density of 0.333
  • the total number of ports used only for the Ks CSI-RS resources is 24, and the total number of ports used only for the Ks CSI-RS resources for two CSI-RS resources with a density of 0.5 is 16.
  • the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
  • the first threshold may be configured by a network device or predefined.
  • the first threshold may be a high-level parameter or a predefined parameter (or a fixed parameter).
  • the first threshold may be 32 or 48.
  • the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device.
  • the density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
  • the method 200 further includes:
  • the terminal device determines a target CSI-RS resource among the Ks CSI-RS resources, where the target CSI-RS resource is used to report the CSI.
  • the CSI-RS resource set is further determined for reporting
  • the target CSI-RS resource of the CSI can reduce the overhead of the CSI-RS resource.
  • the target CSI-RS resource may include one CSI-RS resource or multiple CSI-RS resources.
  • the method 200 further includes:
  • the terminal device sends first indication information to the network device, where the first indication information is used to indicate the target CSI-RS resource.
  • the number of CSI-RS resources included in the target CSI-RS resource is one
  • the first indication information includes a CSI-RS resource indicator (CSI-RS Resource Indicator, CRI), and the CRI uses for indicating the one target CSI-RS resource.
  • CRI CSI-RS Resource Indicator
  • the target CSI-RS resource includes multiple CSI-RS resources
  • the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
  • the first indication information when indicating in a bitmap manner, includes Ks bits.
  • each of the Ks bits corresponds to one CSI-RS resource among the Ks CSI-RS resources, and the value of each bit is used to indicate whether the corresponding CSI-RS resource is used for reporting CSI.
  • the first indication information when the indication is in a combined manner, includes bits, where the K is the number of the multiple CSI-RS resources, Indicates rounded up.
  • the K is a high-level parameter or a predefined parameter.
  • the CSI-related parameters may include the K.
  • the K is determined according to the Ks.
  • the CSI-related parameters may include the first coefficient x.
  • the method 200 further includes:
  • the terminal device does not send the CRI to the network device.
  • the fact that the target CSI-RS resources include the Ks CSI-RS resources can be understood as the terminal equipment does not select CSI-RS resources, but reports CSI through all CSI-RS resources.
  • the method 200 further includes:
  • the target CSI-RS resource includes CSI-RS resources 0 to 3, wherein CSI-RS resource 0 includes CSI-RS ports 0 to 7, CSI-RS resource 1 includes CSI-RS ports 8 to 15, and CSI-RS resource 1 includes CSI-RS ports 8 to 15.
  • - RS resource 2 includes CSI-RS ports 16-23, and CSI-RS resource 3 includes CSI-RS ports 24-31.
  • Table 1 shows a mapping manner of PMI port serial numbers.
  • the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
  • the densities of the multiple CSI-RS port groups are the same.
  • the density of the plurality of CSI-RS port groups is 0.25.
  • the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports for the one CSI-RS resource is 32, 24 or 16.
  • the number of CSI-RS port groups included in the one CSI-RS resource is configured by the network device, or is predefined.
  • the number of CSI-RS port groups included in the one CSI-RS resource is determined according to the density of the multiple CSI-RS port groups.
  • the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the multiple CSI-RS port groups.
  • the P is a high-level parameter, or the P is a predefined parameter.
  • the P may be configured by a network device, or a fixed parameter, for example, P is 0.25, 0.5, and so on.
  • the CSI-RS related parameters may include the parameter P.
  • resource block offsets (rb-offsets) of the multiple CSI-RS port groups are different.
  • the density of the multiple CSI-RS port groups is 0.5, and the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero (that is, the first CSI-RS port group is The RS port group corresponds to an even-numbered resource block RB), and the resource block offset of the second CSI-RS port group is 1 (that is, the second CSI-RS port group corresponds to an odd-numbered resource block RB).
  • the density of the multiple CSI-RS port groups is 0.25
  • the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero
  • the second CSI-RS port group has zero offset.
  • the resource block offset of the RS port group is 1
  • the resource block offset of the third CSI-RS port group is 2
  • the resource block offset of the fourth CSI-RS port group is 3.
  • each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports. For example, if the total number of ports of the one CSI-RS resource is 32, and the multiple CSI-RS port groups are 4 CSI-RS port groups, the number of CSI-RS ports included in each CSI-RS port group is 8 .
  • each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports. It should be understood that the different number of CSI-RS ports included in each CSI-RS port group here does not mean that the number of CSI-RS ports included in every two CSI-RS port groups is different, but that the multiple CSI-RS port groups include different numbers of CSI-RS ports. There may be CSI-RS port groups with different numbers of CSI-RS ports in the RS port group.
  • the number of CSI-RS ports included in each CSI-RS port group may be sequentially as follows 16, 8, 4, and 4.
  • the 4 CSI-RS port groups may include 4 CSI-RS port groups with a density of 0.25.
  • the number of CSI-RS ports included in each CSI-RS port group may be 32 and 16.
  • the two CSI-RS port groups may include two CSI-RS port groups with a density of 0.5.
  • the number of CSI-RS ports included in the one CSI-RS resource is a first value, and the first value is 16 and/or 8.
  • the first value may be determined according to high-level parameters and/or predefined parameters.
  • the first value is a fixed value, which is 16 or 8, or the first value is one of 16 and 8.
  • the one CSI-RS resource includes two CSI-RS port groups with a density of 0.5, and the total number of ports used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
  • the second value is a fixed value, which is 32 or 16, or the second value is one of 32 and 16.
  • the number of CSI-RS ports included in the one CSI-RS resource is 8.
  • the one CSI-RS resource includes 4 CSI-RS ports with a density of 0.25, and only the total number of ports used for the one CSI-RS resource is 32.
  • the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
  • the second threshold may be configured by the network device or predefined.
  • the second threshold may be a high-level parameter or a predefined parameter.
  • the second threshold may be 32 or 48.
  • the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device.
  • the density of the multiple CSI-RS port groups is 0.25, which is determined by the capability of the terminal device.
  • the CSI-RS port group included in the one CSI-RS resource is one or more Code Division Multiplexing (Code Division Multiplexing, CDM) groups.
  • the one CSI-RS resource includes 4 CDM groups.
  • the CSI-RS positions in a time slot are shown in Table 2. For the 18th row in the table, when the total number of ports in multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM group.
  • each of the four CDM groups corresponds to one resource block offset.
  • two CDM groups in the four CDM groups correspond to one resource block offset.
  • Table 3 shows the correspondence between the density of the CSI-RS port group and the resource block offset.
  • CDM group 0 and CDM group 1 correspond to Rb-offset0
  • CDM group 2 and CDM group 3 correspond to Rb-offset1.
  • CDM group 0 corresponds to Rb-offset0
  • CDM group 1 corresponds to Rb-offset1
  • CDM group 2 corresponds to Rb-offset2
  • CDM group 3 corresponds to Rb-offset3.
  • the ports included in the port groups of CSI-RS resources can be reduced by frequency division multiplexing.
  • the method 200 further includes:
  • the terminal device determines at least one of the following information according to high-level parameters and/or predefined parameters:
  • the number M of frequency domain basis vectors (FD basis) reported by the terminal device where the M is an integer greater than 1;
  • the terminal equipment measures the CSI-RS and/or reports the window position S and length N of the frequency domain base vector;
  • the terminal device reports the position f 0 of the strongest coefficient (Strongest coefficient indicator, SCI);
  • the M is a prime number, eg, M is 3.
  • the number R of PMI subbands of the CQI subbands is a value from the following set: ⁇ 1, 2, 4 ⁇ , ⁇ 1, 2, 4, 8 ⁇ .
  • the R is one of ⁇ 1,2,4 ⁇ or ⁇ 1,2,4,8 ⁇ if and only if M>1.
  • the terminal device may measure the CSI-RS and the window position and length of the frequency domain base vector reported by the terminal device may be the same or may be different.
  • the terminal device measures the CSI-RS and/or the window position and length of the frequency domain basis vector reported by the terminal device may include:
  • the terminal device measures the window position S1 and length N1 of the CSI-RS, and/or,
  • the terminal device reports the window position S2 and the length N2 of the frequency domain basis vector.
  • S1 and S2 may be the same or different, and N1 and N2 may be the same or different.
  • the S is zero.
  • the window position S may be determined according to the number of PMI subbands.
  • the a may be one of ⁇ 2, 4 ⁇ .
  • the CSI related parameters may include the parameter a.
  • the N is a prime number, such as 1, 3, 5, 7, etc.
  • multiple terminal devices may multiplex CSI-RS resources in a time-division manner.
  • the position where different terminal devices report the strongest coefficients may be time-divisional, or the terminal device reports the window position S of the frequency domain basis vector. It can be time-division, which is beneficial to reduce the CSI-RS resource overhead.
  • the window starting position S may be configured by the network device or predefined.
  • the network device may configure the window start position S through high-level signaling, such as radio resource control signaling (Radio Resource Control, RRC) or physical layer signaling, such as downlink control information (Downlink Control Information, DCI).
  • RRC Radio Resource Control
  • DCI Downlink Control Information
  • the f 0 is zero.
  • the position f 0 where the strongest coefficient is reported may be determined according to high-level parameters.
  • the higher layer parameter may include the number of PMI subbands.
  • the b may be one of ⁇ 2, 4 ⁇ .
  • the CSI-related parameters may include the parameter b.
  • the sequence numbers of the M FD basis calculated by the terminal device are f 0 , f 1 , . 0 .
  • the frequency-domain basis vector f ⁇ mod(M initial +i, N 3 ), i 0, 1, . operation.
  • the rank is equal to 1
  • the maximum number of non-zero coefficients is K0
  • the rank (rank) is greater than 1
  • the total maximum number of non-zero coefficients in all layers is
  • the rank is equal to 1, and the maximum number of non-zero coefficients is If the rank is greater than 1, the total maximum number of non-zero coefficients in all layers is
  • the ⁇ may be a high-level parameter or a predefined parameter.
  • ⁇ may be configured by the network device, or predefined.
  • K0 is determined according to the total number P CSI-RS of CSI ports used for reporting CSI, for example, Used to limit CSI reporting overhead.
  • P CSI-RS may be the total number of CSI-RS ports included in the target CSI-RS resource, or, if the terminal device transmits CSI through all CSI-RS resources in the CSI-RS resource set, the P CSI-RS may be is the number of CSI-RS ports included in all CSI-RS resources.
  • the ⁇ can be a high-level parameter or a predefined parameter.
  • ⁇ can be configured by the network device, or predefined.
  • the ⁇ may be a high-level parameter or a predefined parameter.
  • ⁇ may be configured by the network device, or predefined.
  • the CSI-related parameters may include one or more of the ⁇ , ⁇ , and ⁇ .
  • the S203 may include:
  • the terminal device reports the PMI to the network device.
  • the terminal device reports the PMI to the network device, including at least one of the following:
  • the terminal equipment reports the strongest coefficient SCI
  • the terminal device reports a non-zero coefficient
  • the terminal equipment reports the CQI
  • the terminal device reports first indication information, where the first indication information is used to determine the strongest coefficient.
  • the first indication information includes port location indication information and/or frequency domain location indication information.
  • the port position indication information is used to indicate the position of a CSI-RS port used for reporting CSI-RS resources of CSI.
  • the frequency domain location indication information is used to indicate frequency domain location information of the strongest coefficients.
  • the frequency domain position indication information is used to indicate the offset of the frequency domain position of the strongest coefficient relative to the starting position S of the window, which is denoted as f ⁇ .
  • the frequency-domain position indication information is used to indicate the absolute frequency-domain position of the strongest coefficient, wherein the absolute frequency-domain position of the strongest coefficient is based on the window start position S and relative to the window start position S The offset f ⁇ is determined.
  • the absolute frequency domain position of the strongest coefficient is determined by mod(S+f ⁇ , N3 ), where N3 represents the number of PMI subbands.
  • the window start position S may be configured by the network device or predefined, for example, the network device configures the S through RRC signaling or DCI.
  • the terminal device may perform a cyclic shift operation on each layer, so that the offset f ⁇ of the frequency domain position of the strongest coefficient of each layer relative to the starting position S of the window is the same. That is, all layers can use a common f ⁇ , so that when reporting frequency domain location indication information, only one frequency domain location indication information can be reported, which is beneficial to reduce CSI overhead.
  • the offset f ⁇ of the frequency domain position of the strongest coefficient relative to the window start position S may be determined according to the window length N.
  • f ⁇ may be determined according to N and coefficient k, for example, k may be 1/2, 1/3, etc.
  • f ⁇ N/2.
  • the window length N may be configured by the network device or predefined, for example, the network device configures the N through RRC signaling or DCI.
  • the window start position S and length N are used to determine the window for reporting the frequency domain basis vector.
  • k may be configured by the network device, or pre-defined, such as through higher layer signaling or DCI.
  • the offset f ⁇ of the frequency domain position of the strongest coefficient relative to the starting position S of the window may be configured by the network device, or pre-defined, for example, the network device configures the f ⁇ through high-layer signaling or DCI .
  • the bit width of the port position indication information may be determined according to K 1 bits or 2L bits, for example, K 1 bits or 2L bits, or bits or bits.
  • K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
  • the bit width of the frequency domain location indication information may be determined according to the window length N, for example, N bits or bits.
  • the terminal device reports the port location indication information corresponding to each layer, that is, the port location indication information is layer-granular.
  • the total bit width occupied by the location information can be v K 1 -bit or 2L-bit, or v bits or bits.
  • the terminal device when the number of layers v is greater than 1, for each layer, the terminal device reports one frequency domain location indication information, that is, all layers can use common frequency domain location indication information.
  • the total bit width occupied by the frequency domain location information reported by the terminal equipment may be N bits or bits.
  • the terminal device passes The bit reports the frequency domain basis vector of each layer or all layers.
  • the terminal device is The starting position of the window of the frequency-domain basis vector of the bit-reported basis vector corresponds to the M initial described above.
  • each layer starts with Bit reporting, or the corresponding frequency-domain basis vectors of each layer are the same.
  • the terminal device is or The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
  • the terminal device passes the bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the The bit reports the strongest coefficient of each layer, where ⁇ is a high-level parameter or a predefined parameter, and the determination method of K0 refers to the foregoing embodiments.
  • the terminal device passes the bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the Bits report the strongest coefficient for each layer.
  • the terminal device passes the bit reporting the strongest coefficient
  • the terminal device reports the layer where the strongest coefficient is located, and passes the or The bit reports the position of the strongest coefficient in the layer, where ⁇ is a high-level parameter or a predefined parameter, and reference is made to the foregoing embodiments for the determination method of K0.
  • the terminal device if M is greater than 1, for each CSI-RS port used by the terminal device to report CSI, for example, the CSI-RS port included in the target CSI-RS resource, the terminal device only reports one non-identical CSI-RS port. zero coefficient.
  • the terminal device reports the CQI to the network device, including:
  • the terminal device only reports the wideband CQI, or sets the CQI format indicator (cqi-FormatIndicator) to the wideband CQI (widebandCQI); or
  • the terminal device reports the subband CQI, or sets the CQI format indicator (cqi-FormatIndicator) as subband CQI (subbandCQI).
  • the method 200 further includes:
  • the terminal device calculates the CQI according to at least one CSI-RS resource used for reporting CSI.
  • the terminal device calculates the CQI according to the target CSI-RS resource, and the target CSI-RS resource may include part or all of the CSI-RS resource in the CSI-RS resource set.
  • the method 200 further includes:
  • the terminal device determines the CQI subband size according to higher layer parameters or predefined parameters.
  • the CQI subband size may refer to the number of physical resource blocks (physical resource blocks, PRBs) included in each CQI subband.
  • the CQI subband size According to the reported bandwidth and the first parameter d1, where the first parameter is a high-level parameter or a predefined parameter.
  • the CQI subband size According to the nominal subband size and the second parameter d2, where the second parameter d2 is a high-level parameter or a predefined parameter.
  • the nominal subband size It is determined according to the Band Width Part (Band Width Part, BWP) size and the high-layer parameter subbandSize.
  • the CQI subband size can be determined according to a specific bandwidth and a scaling factor.
  • the specific bandwidth can be the reporting bandwidth or the nominal subband size described above, or can also be other reference bandwidths
  • the scaling factor can be a higher layer parameters, or predefined parameters.
  • the scaling factor can be 1, 1/2 or 1/4, etc.
  • the network device may configure a CSI-RS resource set for the terminal device, where the CSI-RS resource set includes at least one CSI-RS resource, and the terminal device is based on the CSI-RS resource set configured by the network device. and/or CSI-related parameters, determine CSI, and further report CSI to the network device through the CSI-RS resources in the CSI-RS resource set, which can reduce the CSI-RS resource overhead.
  • the embodiments of the present application can compress codebook overhead, improve feedback efficiency, and improve system robustness by estimating the characteristics of space domain and time delay (DFT transform domain) from SRS.
  • DFT transform domain space domain and time delay
  • the ports included in the port groups of CSI-RS resources can be reduced by frequency division multiplexing.
  • multiple terminal devices can time-division multiplex the same physical resources to reduce CSI-RS resource overhead.
  • the channel becomes flat, and the channel information can be well reflected by simple parameter configuration (for example, one or two FD/large subband bandwidth), while reducing the complexity of UE implementation.
  • FIG. 3 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 300 includes:
  • the communication unit 310 is configured to receive a channel state information reference signal CSI-RS resource set sent by a network device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS resource.
  • a processing unit 320 configured to determine channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
  • the communication unit 310 is further configured to report the CSI to the network device.
  • the CSI related parameters include higher layer parameters and/or predefined parameters.
  • the density of the Ks CSI-RS resources is the same, and the density of the Ks CSI-RS resources is 0.25.
  • the density of the Ks CSI-RS resources is 0.25 only for the total number of ports of the Ks CSI-RS resources to be 32.
  • the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
  • the D is a high-level parameter, or the D is a predefined parameter.
  • the resource block offsets of the Ks CSI-RS resources are different.
  • the density of the Ks CSI-RS resources is 0.5
  • the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero
  • the second CSI-RS resource The resource block offset is 1;
  • the density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is 1.
  • the resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
  • the number of CSI-RS ports included in each CSI-RS resource is a first value, the first value is 16 and/or 8, and the Ks CSI-RS resources include 2 densities
  • a CSI-RS resource of 0.5 is only used for the total number of ports of the Ks CSI-RS resources is a second value, and the second value is 32 and/or 16.
  • the number of CSI-RS ports included in each CSI-RS resource is 8, and the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources
  • the total number of ports for CSI-RS resources is 32.
  • the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
  • all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
  • all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports.
  • the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device, and/or
  • the density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
  • processing unit 320 is further configured to:
  • a target CSI-RS resource is determined among the Ks CSI-RS resources, and the target CSI-RS resource is used for reporting the CSI.
  • the communication unit 310 is further configured to:
  • the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indication CRI, where the CRI is used to indicate the one target CSI-RS resource.
  • the target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
  • the first indication information includes Ks bits, or, bits, where the K is the number of the multiple CSI-RS resources, Indicates rounded up.
  • the K is a high-level parameter or a predefined parameter, or the K is determined according to the Ks.
  • the K is determined according to the Ks and a first coefficient, where the first coefficient is a high-level parameter or a predefined parameter.
  • the communication unit 310 is further configured to:
  • the target CSI-RS resource includes the Ks CSI-RS resources, no CRI is sent to the network device.
  • the target CSI-RS resource includes multiple CSI-RS resources, and the method further includes:
  • each CSI-RS resource in the plurality of CSI-RS resources For each CSI-RS resource in the plurality of CSI-RS resources, set the port sequence number of the PMI from the first CSI-RS port of each CSI-RS resource to the port number of each CSI-RS resource The last CSI-RS port is mapped sequentially.
  • the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
  • the densities of the plurality of CSI-RS port groups are the same, and the densities of the plurality of CSI-RS port groups are 0.25.
  • the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports used for the one CSI-RS resource is 32.
  • the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the plurality of CSI-RS port groups.
  • the P is a high-level parameter, or the P is a predefined parameter.
  • the resource block offsets of the plurality of CSI-RS port groups are different.
  • the density of the plurality of CSI-RS port groups is 0.5, the resource block offset of the first CSI-RS port group of the plurality of CSI-RS port groups is zero, and the second CSI-RS port group has zero offset.
  • the resource block offset of the RS port group is 1; or
  • the density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the resources of the second CSI-RS port group
  • the block offset is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
  • the number of CSI-RS ports included in the one CSI-RS resource is a first value, the first value is 16 and/or 8, and the one CSI-RS resource includes 2 ports with a density of 0.5
  • the total number of ports of the CSI-RS port group used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
  • the number of CSI-RS ports included in the one CSI-RS resource is 8, and the number of CSI-RS ports included in the one CSI-RS resource with a density of 0.25 is only used for the one CSI-RS
  • the total number of ports for RS resources is 32.
  • the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
  • each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports.
  • each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports.
  • the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device, and/or
  • the density of the plurality of CSI-RS port groups of 0.25 is determined by the capability of the terminal device. 36. The method according to any one of claims 23-35, wherein the CSI-RS port group is one or more code division multiplexing CDM groups.
  • the one CSI-RS resource includes 4 CDM groups.
  • each of the four CDM groups corresponds to a resource block offset
  • the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
  • processing unit 320 is further configured to:
  • At least one of the following information is determined based on high-level parameters and/or predefined parameters:
  • the terminal equipment measures the CSI-RS and/or reports the window position S and length N of the frequency domain base vector;
  • the terminal equipment reports the position f 0 of the strongest coefficient
  • the M is a prime number.
  • the R is one of the following set of values: ⁇ 1,2,4 ⁇ , ⁇ 1,2,4,8 ⁇ .
  • the R is a value of ⁇ 1, 2, 4, 8 ⁇ if and only if M>1.
  • the S is zero; or
  • the N is a prime number.
  • the f 0 is zero; or
  • the frequency-domain basis vector f ⁇ mod(M initial +i, N 3 ), i 0, 1, . operation.
  • the rank is equal to 1
  • the maximum number of non-zero coefficients is K0
  • the rank is greater than 1
  • the total maximum number of non-zero coefficients in all layers is
  • the rank is equal to 1, and the maximum number of non-zero coefficients is If the rank is greater than 1, the total maximum number of non-zero coefficients in all layers is
  • P CSI-RS is the total number of CSI-RS ports used for reporting CSI, where ⁇ 1, ⁇ 1, and ⁇ 1.
  • the ⁇ is a higher layer parameter or a predefined parameter
  • the ⁇ is a higher layer parameter or a predefined parameter
  • the ⁇ is a higher layer parameter or a predefined parameter
  • the ⁇ is a higher layer parameter or a predefined parameter
  • the communication unit 310 is further configured to:
  • the communication unit 310 is further configured to perform at least one of the following:
  • the terminal device is The bit reports the frequency domain basis vector of each layer or all layers.
  • the terminal device is Bit reports the starting position of the window of the frequency-domain basis vector, where each layer starts with bit reporting, or the corresponding frequency domain base vector of each layer is the same.
  • the terminal device is or The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources of CSI.
  • the terminal device passes bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the Bits report the strongest coefficient of each layer, where ⁇ is a high-level parameter or a predefined parameter, P CSI-RS is the total number of CSI-RS ports used for reporting CSI.
  • the terminal device passes bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the Bits report the strongest coefficient of each layer, where,
  • the terminal device passes bit reporting the strongest coefficient
  • the terminal device reports the layer where the strongest coefficient is located, and passes the or The bit reports the position of the strongest coefficient in the layer, where ⁇ is a high-level parameter or a predefined parameter,
  • the terminal device if M is greater than 1, for each CSI-RS port used by the terminal device to report CSI, the terminal device only reports one non-zero coefficient.
  • the communication unit 310 is further configured to:
  • processing unit 320 is further configured to:
  • the CQI is determined according to at least one CSI-RS resource for reporting CSI.
  • processing unit 320 is further configured to:
  • the CQI subband size is determined according to higher layer parameters or predefined parameters.
  • the CQI subband size is determined according to the reporting bandwidth and a first parameter, where the first parameter is a higher layer parameter or a predefined parameter.
  • the CQI subband size is determined based on a nominal subband size and a second parameter, the second parameter being a higher layer parameter or a predefined parameter, wherein the nominal subband size is based on the bandwidth part BWP
  • the size and high layer parameters are determined by the subband size.
  • the first indication information includes port location indication information and/or frequency domain location indication information.
  • the port position indication information is used to indicate the position of a CSI-RS port used for reporting CSI-RS resources of CSI.
  • the frequency domain location indication information is used to indicate frequency domain location information of the strongest coefficients.
  • the frequency domain position indication information is used to indicate the offset f ⁇ of the frequency domain position of the strongest coefficient relative to the window position S, or
  • the frequency domain position indication information is used to indicate the absolute frequency domain position of the strongest coefficient.
  • the absolute frequency domain position of the strongest coefficient is determined by mod(S+f ⁇ , N3), where N3 represents the number of PMI subbands, and f ⁇ represents the frequency domain position of the strongest coefficient relative to the The offset of the window position S.
  • the offset f ⁇ of the frequency domain position of the strongest coefficient corresponding to each layer relative to the window position S is the same.
  • the offset f ⁇ of the frequency domain position of the strongest coefficient relative to the window position S is determined according to the window length N, or is configured by the network device, or is predefined.
  • the bit width of the port location indication information may be K 1 bits or 2L bits, or bits or bits.
  • the bit width of the frequency domain location indication information may be N bits or bits, where N represents the window length.
  • the terminal device reporting the first indication information includes:
  • the terminal device reports V port location indication information and one frequency domain location indication information.
  • the S is configured or predefined by the network device.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 300 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 300 are respectively for realizing the method shown in FIG. 2 .
  • the corresponding process of the terminal device in 200 is not repeated here for brevity.
  • FIG. 4 is a schematic block diagram of a network device according to an embodiment of the present application.
  • the network device 400 of FIG. 4 includes:
  • a communication unit 410 configured to send a channel state information reference signal CSI-RS resource set to a terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1;
  • the communication unit 420 is further configured to receive channel state information CSI reported by the terminal equipment, where the CSI is determined according to the CSI-RS resource set and/or CSI-related parameters, wherein the CSI includes a precoding matrix Indicates PMI.
  • the CSI related parameters include higher layer parameters and/or predefined parameters.
  • the density of the Ks CSI-RS resources is the same, and the density of the Ks CSI-RS resources is 0.25.
  • the density of the Ks CSI-RS resources is 0.25 only for the total number of ports of the Ks CSI-RS resources to be 32.
  • the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
  • the D is a high-level parameter, or the D is a predefined parameter.
  • the resource block offsets of the Ks CSI-RS resources are different.
  • the density of the Ks CSI-RS resources is 0.5
  • the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero
  • the second CSI-RS resource The resource block offset is 1;
  • the density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is 1.
  • the resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
  • the number of CSI-RS ports included in each CSI-RS resource is a first value, the first value is 16 and/or 8, and the Ks CSI-RS resources include 2 densities
  • a CSI-RS resource of 0.5 is only used for the total number of ports of the Ks CSI-RS resources is a second value, and the second value is 32 and/or 16.
  • the number of CSI-RS ports included in each CSI-RS resource is 8, and the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources
  • the total number of ports for CSI-RS resources is 32.
  • the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
  • all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
  • all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports.
  • the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device, and/or
  • the density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
  • the communication unit 410 is further configured to:
  • the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indication CRI, where the CRI is used to indicate the one target CSI-RS resource.
  • the target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
  • the first indication information includes Ks bits, or, bits, where the K is the number of the multiple CSI-RS resources, Indicates rounded up.
  • the K is a high-level parameter or a predefined parameter, or the K is determined according to the Ks.
  • the K is determined according to the Ks and a first coefficient, where the first coefficient is a high-level parameter or a predefined parameter.
  • the target CSI-RS resource includes a plurality of CSI-RS resources, and for each CSI-RS resource in the plurality of CSI-RS resources, the port sequence number of the PMI starts from the each CSI-RS resource.
  • the first CSI-RS port of the CSI-RS resource is sequentially mapped to the last CSI-RS port of each CSI-RS resource.
  • the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
  • the densities of the plurality of CSI-RS port groups are the same, and the densities of the plurality of CSI-RS port groups are 0.25.
  • the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports used for the one CSI-RS resource is 32.
  • the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the plurality of CSI-RS port groups.
  • the P is a high-level parameter, or the P is a predefined parameter.
  • the resource block offsets of the plurality of CSI-RS port groups are different.
  • the density of the plurality of CSI-RS port groups is 0.5, the resource block offset of the first CSI-RS port group of the plurality of CSI-RS port groups is zero, and the second CSI-RS port group has zero offset.
  • the resource block offset of the RS port group is 1; or
  • the density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the resources of the second CSI-RS port group
  • the block offset is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
  • the number of CSI-RS ports included in the one CSI-RS resource is a first value, the first value is 16 and/or 8, and the one CSI-RS resource includes 2 ports with a density of 0.5
  • the total number of ports of the CSI-RS port group used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
  • the number of CSI-RS ports included in the one CSI-RS resource is 8, and the number of CSI-RS ports included in the one CSI-RS resource with a density of 0.25 is only used for the one CSI-RS
  • the total number of ports for RS resources is 32.
  • the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
  • each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports.
  • each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports.
  • the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device, and/or
  • the density of the plurality of CSI-RS port groups of 0.25 is determined by the capability of the terminal device. 36. The method according to any one of claims 23-35, wherein the CSI-RS port group is one or more code division multiplexing CDM groups.
  • the one CSI-RS resource includes 4 CDM groups.
  • each of the four CDM groups corresponds to a resource block offset
  • the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
  • the communication unit 410 is further configured to:
  • the communication unit 410 is further configured to perform at least one of the following:
  • the terminal device is The bit reports the frequency domain basis vector of each layer or all layers.
  • the terminal device is Bit reports the starting position of the window of the frequency-domain basis vector, where each layer starts with bit reporting, or the corresponding frequency domain base vector of each layer is the same.
  • the terminal device is or The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
  • the terminal device passes bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the Bits report the strongest coefficient of each layer, where ⁇ is a high-level parameter or a predefined parameter, P CSI-RS is the total number of CSI-RS ports used for reporting CSI.
  • the terminal device passes bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers;
  • the terminal device passes the Bits report the strongest coefficient of each layer, where,
  • the terminal device passes bit reporting the strongest coefficient
  • the terminal device reports the layer where the strongest coefficient is located, and passes the or The bit reports the position of the strongest coefficient in the layer, where ⁇ is a high-level parameter or a predefined parameter,
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 400 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 400 are respectively for realizing the method shown in FIG. 2 .
  • the corresponding process of the network device in 200 is not repeated here for brevity.
  • FIG. 5 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 5 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520 .
  • the processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.
  • the memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 500 may specifically be a network device in this embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 500 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and will not be repeated here.
  • FIG. 6 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.
  • the chip 600 may further include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the chip 600 may further include an input interface 630 .
  • the processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the chip 600 may further include an output interface 640 .
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • FIG. 7 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 7 , the communication system 700 includes a terminal device 710 and a network device 720 .
  • the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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 connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , for brevity, will not be repeated here.
  • Embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.
  • the embodiments of the present application also provide a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.
  • the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application.
  • the corresponding process for the sake of brevity, will not be repeated here.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of 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 components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: 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 codes .

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Abstract

A codebook reporting method, a terminal device, and a network device. The method comprises: a terminal device receives a channel state information-reference signal (CSI-RS) resource set sent by a network device, the CSI-RS resource set comprising Ks CSI-RS resources, and each CSI-RS resource comprising at least one CSI-RS port, wherein Ks is an integer greater than or equal to 1; the terminal device determines channel state information (CSI) according to the CSI-RS resource set and/or a CSI-related parameter, wherein the CSI comprises a precoding matrix indicator (PMI); and the terminal device reports the CSI to the network device.

Description

码本上报的方法、终端设备和网络设备Codebook reporting method, terminal device and network device
本申请要求于2021年3月2日提交中国专利局、申请号为PCT/CN2021/078731、发明名称为“码本上报方法、终端设备和网络设备”的PCT专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the PCT patent application with the application number PCT/CN2021/078731 and the title of the invention "Codebook reporting method, terminal equipment and network equipment", which was submitted to the China Patent Office on March 2, 2021, and its entire contents Incorporated herein by reference.
技术领域technical field
本申请实施例涉及通信领域，具体涉及一种码本上报的方法、终端设备和网络设备。The embodiments of the present application relate to the field of communications, and in particular, to a codebook reporting method, a terminal device, and a network device.
背景技术Background technique
在新无线(New Radio，NR)***中，终端设备可以在信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)上上报信道状态信息(Channel State Information，CSI)，该CSI可以包括频域-空间码本的相关信息，例如，频域-空间码本的W 1的L个空间波束的DFT向量，W f的M个频域的DFT基向量，以及量化的
Figure PCTCN2021085408-appb-000001
等，码本开销较大，因此，如何降低CSI-RS资源开销是一项急需解决的问题。 In a New Radio (NR) system, a terminal device may report channel state information (Channel State Information, CSI) on a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), and the CSI may include frequency Domain-spatial codebook related information, for example, the DFT vectors of the L spatial beams of W 1 of the frequency domain-spatial codebook, the DFT basis vectors of the M frequency domains of W f , and the quantized
Figure PCTCN2021085408-appb-000001
etc., the codebook overhead is relatively large, therefore, how to reduce the CSI-RS resource overhead is an urgent problem to be solved.
发明内容SUMMARY OF THE INVENTION
本申请提供了一种码本上报的方法、终端设备和网络设备，有利于降低CSI-RS资源开销。The present application provides a codebook reporting method, terminal device and network device, which are beneficial to reduce CSI-RS resource overhead.
第一方面，提供了一种码本上报的方法，包括：终端设备接收网络设备发送的信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；所述终端设备根据所述CSI-RS资源集合和/或CSI相关参数，确定信道状态信息CSI，其中，所述CSI包括预编码矩阵指示PMI；所述终端设备向所述网络设备上报所述CSI。A first aspect provides a codebook reporting method, comprising: a terminal device receiving a channel state information reference signal CSI-RS resource set sent by a network device, wherein the CSI-RS resource set includes Ks CSI-RS resources , each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1; the terminal device determines the channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, Wherein, the CSI includes a precoding matrix indication PMI; the terminal device reports the CSI to the network device.
第二方面，提供了一种码本上报的方法，包括：网络设备向终端设备发送信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；所述网络设备向所述终端设备上报信道状态信息CSI，所述CSI是根据所述CSI-RS资源集合和/或CSI相关参数确定的其中，所述CSI包括预编码矩阵指示PMI。In a second aspect, a codebook reporting method is provided, including: a network device sending a channel state information reference signal CSI-RS resource set to a terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, Each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1; the network device reports channel state information CSI to the terminal device, and the CSI is based on the CSI-RS resource Where the set and/or CSI-related parameters are determined, the CSI includes a precoding matrix indicating PMI.
第三方面，提供了一种终端设备，用于执行上述第一方面或其各实现方式中的方法。In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or each implementation manner thereof.
具体地，该终端设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.
第四方面，提供了一种网络设备，用于执行上述第二方面或其各实现方式中的方法。In a fourth aspect, a network device is provided for executing the method in the second aspect or each of its implementations.
具体地，该网络设备包括用于执行上述第二方面或其各实现方式中的方法的功能模块。Specifically, the network device includes functional modules for executing the methods in the second aspect or the respective implementation manners thereof.
第五方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the above-mentioned first aspect or each implementation manner thereof.
第六方面，提供了一种网络设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面或其各实现方式中的方法。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 second aspect or each of its implementations.
第七方面，提供了一种芯片，用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。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.
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。Specifically, the chip includes: a processor for invoking and running a computer program from a memory, so that a device in which the device is installed executes any one of the above-mentioned first to second aspects or each of its implementations method.
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to execute the method in any one of the above-mentioned first aspect to the second aspect or each of its implementations.
第九方面，提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。In a ninth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the implementations thereof.
第十方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method in any one of the above-mentioned first to second aspects or the respective implementations thereof.
通过上述技术方案，网络设备可以给终端设备配置CSI-RS资源集合，其中，该CSI-RS资源集合包括至少一个CSI-RS资源，终端设备可以基于网络设备配置的CSI-RS资源集合和/或CSI相关参数，确定CSI，进一步通过CSI-RS资源集合中的CSI-RS资源向网络设备上报CSI，能够降低CSI-RS资源开销。Through the above technical solutions, the network device can configure the terminal device with a set of CSI-RS resources, where the set of CSI-RS resources includes at least one CSI-RS resource, and the terminal device can be based on the set of CSI-RS resources configured by the network device and/or CSI-related parameters are determined, CSI is determined, and CSI is further reported to the network device through the CSI-RS resources in the CSI-RS resource set, which can reduce the CSI-RS resource overhead.
附图说明Description of drawings
图1是本申请实施例提供的一种通信***架构的示意性图。FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
图2是根据本申请实施例提供的一种码本上报的方法的示意***互图。FIG. 2 is a schematic interaction diagram of a method for reporting a codebook according to an embodiment of the present application.
图3是根据本申请实施例提供的一种终端设备的示意性框图。FIG. 3 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
图4是根据本申请实施例提供的一种网络设备的示意性框图。FIG. 4 is a schematic block diagram of a network device provided according to an embodiment of the present application.
图5是根据本申请实施例提供的一种通信设备的示意性框图。FIG. 5 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
图6是根据本申请实施例提供的一种芯片的示意性框图。FIG. 6 is a schematic block diagram of a chip provided according to an embodiment of the present application.
图7是根据本申请实施例提供的一种通信***的示意性框图。FIG. 7 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
本申请实施例的技术方案可以应用于各种通信***，例如：全球移动通讯(Global System of Mobile communication，GSM)***、码分多址(Code Division Multiple Access，CDMA)***、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)***、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)***、先进的长期演进(Advanced long term evolution，LTE-A)***、新无线(New Radio，NR)***、NR***的演进***、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)***、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)***、非地面通信网络(Non-Terrestrial Networks，NTN)***、通用移动通信***(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)***或其他通信***等。The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
通常来说，传统的通信***支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信***将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信***。Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.
可选地，本申请实施例中的通信***可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
可选地，本申请实施例中的通信***可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信***也可以应用于授权频谱，其中，授权频谱也可以认为是非共享频谱。Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.
本申请实施例结合网络设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
终端设备可以是WLAN中的站点(STATION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信***例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。The terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合 使用，如各类进行体征监测的智能手环、智能首饰等。As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment (gNB) in the PLMN network in the future evolution or the network equipment in the NTN network, etc.
作为示例而非限定，在本申请实施例中，网络设备可以具有移动特性，例如网络设备可以为移动的设备。可选地，网络设备可以为卫星、气球站。例如，卫星可以为低地球轨道(low earth orbit，LEO)卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。可选地，网络设备还可以为设置在陆地、水域等位置的基站。As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
示例性的，本申请实施例应用的通信***100如图1所示。该通信***100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。Exemplarily, a communication system 100 to which this embodiment of the present application is applied 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 referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信***100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。FIG. 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. This application The embodiment does not limit this.
可选地，该通信***100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
应理解，本申请实施例中网络/***中具有通信功能的设备可称为通信设备。以图1示出的通信***100为例，通信设备可包括具有通信功能的网络设备110和终端设备120，网络设备110和终端设备120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信***100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. 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 a communication function, 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, a mobility management entity, etc., which are not limited in this embodiment of the present application.
应理解，本文中术语“***”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
本申请实施例中，"预定义"可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。In this embodiment of the present application, "predefinition" may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, predefined may refer to the definition in the protocol.
本申请实施例中，所述"协议"可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信***中的相关协议，本申请对此不做限定。In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.
为了便于理解本申请实施例的技术方案，以下对频域-空间码本的相关概念进行说明。In order to facilitate understanding of the technical solutions of the embodiments of the present application, related concepts of the frequency domain-spatial codebook are described below.
在版本(release，Rel)16中，对于每一层码本，频域-空间码本(也可以称之为NR类型(type)II码本，或者，频域-空间联合码本)在频域(每个子带)独立编码，由于空间量化精度高，导致总的反馈量太大，通过反馈频域-空间联合码本，在保证NR性能的条件下，可以大大节省反馈量。In release (Rel) 16, for each layer of codebook, the frequency domain-space codebook (also known as the NR type (type) II codebook, or the frequency domain-space joint codebook) is in the frequency domain. Domain (each subband) is independently coded. Due to the high spatial quantization accuracy, the total feedback amount is too large. By feeding back the frequency domain-spatial joint codebook, the feedback amount can be greatly saved under the condition of ensuring the NR performance.
频域-空间码本可以表示为：The frequency domain-spatial codebook can be expressed as:
Figure PCTCN2021085408-appb-000002
Figure PCTCN2021085408-appb-000002
其中，W代表频域-空间码本，W 1代表2L个空间波束(beam)的离散傅里叶变换(Discrete fourier  transformation，DFT)向量，W f代表M个频域的DFT基向量。
Figure PCTCN2021085408-appb-000003
代表W f的转置。
Figure PCTCN2021085408-appb-000004
代表空间频域对的加权系数，
Figure PCTCN2021085408-appb-000005
为一个大小为2L*M的矩阵。W 1可以由2N 1N 2*2L表示，N 1为垂直方向的端口数，N 2为水平方向的端口数。
Figure PCTCN2021085408-appb-000006
可以由2L*M表示，2L值为
Figure PCTCN2021085408-appb-000007
的行数，M值为
Figure PCTCN2021085408-appb-000008
的列数。
Figure PCTCN2021085408-appb-000009
可以由M*N 3表示，N 3为DFT基向量在频域上的数量。 Wherein, W represents the frequency domain-spatial codebook, W 1 represents the discrete Fourier transform (Discrete fourier transformation, DFT) vectors of 2L spatial beams (beams), and W f represents the DFT basis vectors of M frequency domains.
Figure PCTCN2021085408-appb-000003
represents the transpose of Wf .
Figure PCTCN2021085408-appb-000004
represents the weighting coefficient of the spatial frequency domain pair,
Figure PCTCN2021085408-appb-000005
is a matrix of size 2L*M. W 1 can be represented by 2N 1 N 2 *2L, where N 1 is the number of ports in the vertical direction, and N 2 is the number of ports in the horizontal direction.
Figure PCTCN2021085408-appb-000006
It can be represented by 2L*M, and the value of 2L is
Figure PCTCN2021085408-appb-000007
The number of rows, M is
Figure PCTCN2021085408-appb-000008
the number of columns.
Figure PCTCN2021085408-appb-000009
It can be represented by M*N 3 , where N 3 is the number of DFT basis vectors in the frequency domain.
终端设备向网络设备反馈频域-空间码本时，向网络设备上报的信道信息(如信道状态信息(Channel State Information，CSI))的内容包括：W 1的L个空间波束的DFT向量，W f的M个频域的DFT基向量，以及量化的
Figure PCTCN2021085408-appb-000010
网络设备通过三者积得到每一层下行链路的CSI。 When the terminal device feeds back the frequency domain-space codebook to the network device, the content of the channel information (such as Channel State Information (CSI)) reported to the network device includes: DFT vectors of the L spatial beams of W 1 , W The M frequency-domain DFT basis vectors of f , and the quantized
Figure PCTCN2021085408-appb-000010
The network device obtains the downlink CSI of each layer through the product of the three.
Rel 15或者Rel 16的端口选择(port selection)码本与频域-空间码本的区别在于W 1，端口选择(port selection)码本中的W 1的每一列包含一个1，其余为0，并通过采样率d来选择对应的L个端口(port)，d＝1,2,3,4。 The difference between the port selection codebook of Rel 15 or Rel 16 and the frequency domain-space codebook is W 1 , each column of W 1 in the port selection codebook contains a 1, and the rest are 0, And select the corresponding L ports (ports) according to the sampling rate d, d=1, 2, 3, 4.
对于基于频分复用(Frequency-division Duplex，FDD)的上下行互易信道，基站通过上行探测参考信号(Sounding Reference Signal，SRS)得到上行空间、时延的统计特性，确定空间和频域的预编码矩阵或者是联合的预编码矩阵，对信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)进行预编码，终端设备估计CSI-RS选择一个或者多个端口，同时上报该端口的幅度和相位信息。对于一个端口x i，如果用预编码W i进行预编码，W i的维度为f×Nt，f为频域预编码的大小，Nt为天线数量，由基站计算得到。发端的发送信号为
Figure PCTCN2021085408-appb-000011
For the uplink and downlink reciprocal channels based on Frequency-division Duplex (FDD), the base station obtains the statistical characteristics of uplink space and delay through the uplink Sounding Reference Signal (SRS), and determines the spatial and frequency domains. The precoding matrix or the joint precoding matrix is used to precode the channel state information reference signal (Channel State Information Reference Signal, CSI-RS). The terminal device estimates the CSI-RS and selects one or more ports, and reports the port's Amplitude and phase information. For a port x i , if precoding Wi is used for precoding , the dimension of Wi is f ×Nt, f is the size of frequency domain precoding, and Nt is the number of antennas, which is calculated by the base station. The signal sent by the originator is
Figure PCTCN2021085408-appb-000011
在考虑上下行信道互异条件下，现***本没有考虑多输入多输出(multiplein multipleout，MIMO)信道空间和时延的联合分布，码本开销较大，并且，终端设备需要在CSI-RS资源上上报CSI，该CSI包括码本相关信息，因此，如何降低CSI-RS资源开销是一项急需解决的问题。Under the condition that the uplink and downlink channels are mutually different, the existing codebook does not consider the joint distribution of multiple-input multiple-output (MIMO) channel space and delay, and the codebook overhead is relatively large. The CSI is reported on the resource, and the CSI includes codebook related information. Therefore, how to reduce the CSI-RS resource overhead is an urgent problem to be solved.
图2是根据本申请实施例的码本上报的方法200的示意***互图，如图2所示，该方法200包括如下内容：FIG. 2 is a schematic interaction diagram of a codebook reporting method 200 according to an embodiment of the present application. As shown in FIG. 2 , the method 200 includes the following contents:
S201，终端设备接收网络设备发送的信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；S201. A terminal device receives a channel state information reference signal CSI-RS resource set sent by a network device, where the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port , where Ks is an integer greater than or equal to 1;
S202，所述终端设备根据所述CSI-RS资源集合和/或CSI相关参数，确定信道状态信息CSI，其中，所述CSI包括预编码矩阵指示PMI；S202, the terminal device determines channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
S203，所述终端设备向所述网络设备上报所述CSI。S203, the terminal device reports the CSI to the network device.
在一些实施例中，网络设备可以通过高层信令(例如无线资源控制(Radio Resource Control，RRC)信令)给终端设备配置该CSI-RS资源集合。In some embodiments, the network device may configure the CSI-RS resource set for the terminal device through high-layer signaling (eg, radio resource control (Radio Resource Control, RRC) signaling).
在一些实施例中，所述CSI相关参数包括高层参数和/或预定义参数。In some embodiments, the CSI related parameters include higher layer parameters and/or predefined parameters.
换言之，所述CSI相关参数可以是网络设备配置的参数，或者为固定参数。In other words, the CSI-related parameters may be parameters configured by the network device, or fixed parameters.
应理解，该CSI相关参数可以包括用于确定CSI的任意参数，结合后续实施例说明该CSI相关参数可能包括的参数。It should be understood that the CSI-related parameters may include any parameters used to determine CSI, and the parameters that may be included in the CSI-related parameters will be described with reference to subsequent embodiments.
在本申请一些实施例中，所述Ks个CSI-RS资源的密度相同。In some embodiments of the present application, the Ks CSI-RS resources have the same density.
其中，CSI-RS资源的密度为每个物理资源块(PhysicalResource Block，PRB)每个CSI-RS端口的CSI-RS频率密度。The density of the CSI-RS resources is the CSI-RS frequency density of each CSI-RS port of each Physical Resource Block (Physical Resource Block, PRB).
由于CSI-RS资源的开销与CSI-RS资源的端口数和密度正相关，即端口数越多，开销越大，密度越大，开销越大，因此可以通过设计CSI-RS资源的端口数降低CSI-RS密度来降低CSI-RS的开销。Since the overhead of CSI-RS resources is positively related to the number of ports and the density of CSI-RS resources, that is, the more ports, the greater the overhead, and the greater the density, the greater the overhead, so it can be reduced by designing the number of ports of CSI-RS resources CSI-RS density to reduce CSI-RS overhead.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.25，有利于降低CSI-RS资源开销。In some embodiments, the density of the Ks CSI-RS resources is 0.25, which is beneficial to reduce the CSI-RS resource overhead.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.25仅用于所述Ks个CSI-RS资源的总端口数为X，例如X为{32}，{32,24}，{32,24,16}中的一个。换言之，只在Ks个CSI-RS资源的总端口数为X时所述Ks个CSI-RS资源的密度为0.25。In some embodiments, the density of the Ks CSI-RS resources is 0.25, and only the total number of ports used for the Ks CSI-RS resources is X, for example, X is {32}, {32, 24}, { 32,24,16} one of. In other words, the density of the Ks CSI-RS resources is 0.25 only when the total number of ports of the Ks CSI-RS resources is X.
在本申请一些实施例中，所述Ks个CSI-RS资源的个数根据所述Ks个CSI-RS资源的密度确定。例如，所述Ks个CSI-RS资源为1/D个CSI-RS资源，其中，所述D为所述Ks个CSI-RS资源的密度。In some embodiments of the present application, the number of the Ks CSI-RS resources is determined according to the density of the Ks CSI-RS resources. For example, the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
在一些实施例中，所述D为高层参数，或者，所述D为预定义参数。In some embodiments, the D is a high-level parameter, or the D is a predefined parameter.
换言之，该D可以是网络设备配置的，或者是固定参数，例如D为0.25，0.5等。In other words, the D may be configured by the network device, or a fixed parameter, for example, D is 0.25, 0.5, and so on.
在一些实施例中，所述CSI-RS相关参数可以包括该参数D。In some embodiments, the CSI-RS related parameters may include the parameter D.
在本申请一些实施例中，所述Ks个CSI-RS资源的资源块偏移(rb-offset)不同。即该Ks个CSI-RS资源可以通过频分复用的方式区分。In some embodiments of the present application, resource block offsets (rb-offsets) of the Ks CSI-RS resources are different. That is, the Ks CSI-RS resources can be distinguished by frequency division multiplexing.
作为一个示例，所述Ks个CSI-RS资源的密度为0.5，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零(即第一个CSI-RS资源对应偶数资源块RB)，第二个CSI-RS资源的资源块偏移为1(即第二个CSI-RS资源对应奇数资源块RB)。As an example, the density of the Ks CSI-RS resources is 0.5, and the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero (that is, the first CSI-RS resource corresponds to even resource block RB), the resource block offset of the second CSI-RS resource is 1 (that is, the second CSI-RS resource corresponds to an odd-numbered resource block RB).
作为另一示例，所述Ks个CSI-RS资源的密度为0.25，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1，第三个CSI-RS资源的资源块偏移为2，第四个CSI-RS资源的资源块偏移为3。As another example, the density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is zero. The resource block offset is 1, the resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
在本申请一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数相同。例如，Ks为4，该4个CSI-RS资源的总端口数为32，每个CSI-RS资源的端口数可以为8。In some embodiments of the present application, all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports. For example, Ks is 4, the total number of ports of the 4 CSI-RS resources is 32, and the number of ports of each CSI-RS resource may be 8.
在本申请另一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不同。应理解，这里的CSI-RS端口数不同并不是指每两个CSI-RS资源的CSI-RS端口数均不同，而是说，该CSI-RS资源集合中可以存在CSI-RS端口数不同的CSI-RS资源。In other embodiments of the present application, all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports. It should be understood that the different number of CSI-RS ports here does not mean that the number of CSI-RS ports is different for every two CSI-RS resources, but means that there may be different numbers of CSI-RS ports in the CSI-RS resource set. CSI-RS resources.
例如，Ks为4，该4个CSI-RS资源的总端口数为32，每个CSI-RS资源的端口数可以依次为16，8，4，4，此情况下，该4个CSI-RS资源可以包括4个密度为0.25的CSI-RS资源。For example, Ks is 4, the total number of ports of the 4 CSI-RS resources is 32, and the number of ports of each CSI-RS resource can be 16, 8, 4, 4 in sequence. In this case, the 4 CSI-RS resources The resources may include 4 CSI-RS resources with a density of 0.25.
又例如，Ks为2，该2个CSI-RS资源的总端口数为48，每个CSI-RS资源的端口数可以为32，16，此情况下，该2个CSI-RS资源可以包括2个密度为0.5的CSI-RS资源。For another example, Ks is 2, the total number of ports of the two CSI-RS resources is 48, and the number of ports of each CSI-RS resource may be 32 or 16. In this case, the two CSI-RS resources may include 2 CSI-RS resources with a density of 0.5.
在本申请一些实施例中，所述CSI-RS资源集合中CSI-RS资源所包括的CSI-RS端口数为第一值，所述第一值为16和/或8。可选地，所述第一值可以根据高层参数或预定义参数确定。In some embodiments of the present application, the number of CSI-RS ports included in the CSI-RS resources in the CSI-RS resource set is a first value, and the first value is 16 and/or 8. Optionally, the first value may be determined according to a high-level parameter or a predefined parameter.
作为示例，所述第一值为固定值，该固定值为16或8，或者，第一值为16和8中的一个值。As an example, the first value is a fixed value, which is 16 or 8, or the first value is one of 16 and 8.
在一些实施例中，所述Ks个CSI-RS资源包括2个密度为0.5的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为第二值，所述第二值为32、24和16中的至少一个值。In some embodiments, the Ks CSI-RS resources include 2 CSI-RS resources with a density of 0.5, and the total number of ports only used for the Ks CSI-RS resources is a second value, and the second value is at least one of 32, 24, and 16.
可选地，所述第二值可以根据高层参数或预定义参数确定。Optionally, the second value may be determined according to a high-level parameter or a predefined parameter.
作为示例，所述第二值为固定值，该固定值为32或16或24，或者，所述第二值为32、24和16中的一个值。As an example, the second value is a fixed value, the fixed value is 32 or 16 or 24, or the second value is one of 32, 24 and 16.
在本申请另一些实施例中，所述每个CSI-RS资源包括的CSI-RS端口数为8。In other embodiments of the present application, the number of CSI-RS ports included in each CSI-RS resource is 8.
作为示例，所述Ks个CSI-RS资源包括4个密度为0.25的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为32，3个密度为0.333的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为24，2个密度为0.5的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为16。As an example, the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources, the total number of ports is 32, and 3 CSI-RS resources with a density of 0.333 The total number of ports used only for the Ks CSI-RS resources is 24, and the total number of ports used only for the Ks CSI-RS resources for two CSI-RS resources with a density of 0.5 is 16.
在本申请又一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不超过第一阈值。In still other embodiments of the present application, the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
可选地，所述第一阈值可以是网络设备配置的，或者预定义的。Optionally, the first threshold may be configured by a network device or predefined.
换言之，该第一阈值可以为高层参数或预定义参数(或者说，固定参数)。In other words, the first threshold may be a high-level parameter or a predefined parameter (or a fixed parameter).
作为示例，所述第一阈值可以为32或48。As an example, the first threshold may be 32 or 48.
在本申请一些实施例中，所述CSI-RS资源集合包括的CSI-RS资源的数量Ks由所述终端设备的能力确定。In some embodiments of the present application, the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device.
在本申请一些实施例中，所述Ks个CSI-RS资源的密度为0.25由所述终端设备的能力确定。In some embodiments of the present application, the density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
所述终端设备在所述Ks个CSI-RS资源中确定目标CSI-RS资源，所述目标CSI-RS资源用于上报所述CSI。The terminal device determines a target CSI-RS resource among the Ks CSI-RS resources, where the target CSI-RS resource is used to report the CSI.
在本申请实施例中，通过配置CSI-RS资源集合，以及每个CSI-RS资源的端口数和CSI-RS资源的密度满足前述的关系，进一步在该CSI-RS资源集合中确定用于上报CSI的目标CSI-RS资源，能够降低CSI-RS资源的开销。In the embodiment of the present application, by configuring a CSI-RS resource set, and the number of ports of each CSI-RS resource and the density of CSI-RS resources satisfy the foregoing relationship, the CSI-RS resource set is further determined for reporting The target CSI-RS resource of the CSI can reduce the overhead of the CSI-RS resource.
可选地，所述目标CSI-RS资源可以包括一个CSI-RS资源，或者多个CSI-RS资源。Optionally, the target CSI-RS resource may include one CSI-RS resource or multiple CSI-RS resources.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
所述终端设备向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述目标CSI-RS资源。The terminal device sends first indication information to the network device, where the first indication information is used to indicate the target CSI-RS resource.
在一些实施例中，所述目标CSI-RS资源包括的CSI-RS资源的数量为一个，所述第一指示信息包括CSI-RS资源指示(CSI-RS Resource Indicator，CRI)，所述CRI用于指示所述一个目标CSI-RS资源。In some embodiments, the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indicator (CSI-RS Resource Indicator, CRI), and the CRI uses for indicating the one target CSI-RS resource.
在另一些实施例中，所述目标CSI-RS资源包括多个CSI-RS资源，所述第一指示信息通过比特位图或组合方式指示所述多个CSI-RS资源。In other embodiments, the target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
作为示例，当采用比特位图方式指示时，所述第一指示信息包括Ks个比特。例如，所述Ks个比特中的每个比特对应Ks个CSI-RS资源中的一个CSI-RS资源，每个比特的取值用于指示对应的CSI-RS资源是否用于上报CSI。As an example, when indicating in a bitmap manner, the first indication information includes Ks bits. For example, each of the Ks bits corresponds to one CSI-RS resource among the Ks CSI-RS resources, and the value of each bit is used to indicate whether the corresponding CSI-RS resource is used for reporting CSI.
作为示例，当采用组合方式指示时，所述第一指示信息包括
Figure PCTCN2021085408-appb-000012
个比特，其中，所述K为所述多个CSI-RS资源的数量，
Figure PCTCN2021085408-appb-000013
表示向上取整。 As an example, when the indication is in a combined manner, the first indication information includes
Figure PCTCN2021085408-appb-000012
bits, where the K is the number of the multiple CSI-RS resources,
Figure PCTCN2021085408-appb-000013
Indicates rounded up.
在一些实施例中，所述K为高层参数或者预定义参数。In some embodiments, the K is a high-level parameter or a predefined parameter.
在一些实施例中，所述CSI相关参数可以包括所述K。In some embodiments, the CSI-related parameters may include the K.
在另一些实施例中，所述K根据所述Ks确定。In other embodiments, the K is determined according to the Ks.
作为示例，所述K根据所述Ks和第一系数x确定，所述第一系数x为高层参数或者预定义参数。例如，K＝x*Ks，x≤1。As an example, the K is determined according to the Ks and a first coefficient x, where the first coefficient x is a high-level parameter or a predefined parameter. For example, K=x*Ks, x≤1.
在一些实施例中，所述CSI相关参数可以包括所述第一系数x。In some embodiments, the CSI-related parameters may include the first coefficient x.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
在所述目标CSI-RS资源包括所述Ks个CSI-RS资源的情况下，所述终端设备不向所述网络设备发送CRI。In the case that the target CSI-RS resource includes the Ks CSI-RS resources, the terminal device does not send the CRI to the network device.
所述目标CSI-RS资源包括所述Ks个CSI-RS资源可以理解为终端设备不进行CSI-RS资源的选择，而是通过全部CSI-RS资源上报CSI。The fact that the target CSI-RS resources include the Ks CSI-RS resources can be understood as the terminal equipment does not select CSI-RS resources, but reports CSI through all CSI-RS resources.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
对于所述目标CSI-RS资源中的每个CSI-RS资源，将PMI的端口序号从所述每个CSI-RS资源的第一个CSI-RS端口到所述每个CSI-RS资源的最后一个CSI-RS端口依次映射。For each CSI-RS resource in the target CSI-RS resource, set the port number of the PMI from the first CSI-RS port of each CSI-RS resource to the last of each CSI-RS resource One CSI-RS port is mapped in sequence.
作为示例，所述目标CSI-RS资源包括CSI-RS资源0～3，其中，CSI-RS资源0包括CSI-RS端口0～7，CSI-RS资源1包括CSI-RS端口8～15，CSI-RS资源2包括CSI-RS端口16～23，CSI-RS资源3包括CSI-RS端口24～31。表1示出了PMI端口序号的一种映射方式。As an example, the target CSI-RS resource includes CSI-RS resources 0 to 3, wherein CSI-RS resource 0 includes CSI-RS ports 0 to 7, CSI-RS resource 1 includes CSI-RS ports 8 to 15, and CSI-RS resource 1 includes CSI-RS ports 8 to 15. - RS resource 2 includes CSI-RS ports 16-23, and CSI-RS resource 3 includes CSI-RS ports 24-31. Table 1 shows a mapping manner of PMI port serial numbers.
表1Table 1
资源块偏移resource block offset 00 11 22 33
CSI-RS资源CSI-RS resources 00 11 22 33
端口序号port number 0～70～7 8～158～15 16～2316～23 24～3124～31
在本申请另一些实施例中，所述Ks个CSI-RS资源为1个CSI-RS资源，所述一个CSI-RS资源包括多个CSI-RS端口组。In other embodiments of the present application, the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
通过将一个CSI-RS资源分为多个CSI-RS端口组，进一步配置每个CSI-RS端口组的密度和端口数，有利于降低CSI-RS资源的开销。By dividing one CSI-RS resource into multiple CSI-RS port groups, and further configuring the density and the number of ports of each CSI-RS port group, it is beneficial to reduce the overhead of CSI-RS resources.
在本申请一些实施例中，所述多个CSI-RS端口组的密度相同。例如，所述多个CSI-RS端口组的密度为0.25。In some embodiments of the present application, the densities of the multiple CSI-RS port groups are the same. For example, the density of the plurality of CSI-RS port groups is 0.25.
在一些实施例中，所述多个CSI-RS端口组的密度为0.25仅用于所述一个CSI-RS资源的总端口数为32、24或16。In some embodiments, the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports for the one CSI-RS resource is 32, 24 or 16.
在本申请一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组的数量是网络设备配置的，或者是预定义的。In some embodiments of the present application, the number of CSI-RS port groups included in the one CSI-RS resource is configured by the network device, or is predefined.
在本申请另一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组的数量根据所述多个CSI-RS端口组的密度确定。例如，所述一个CSI-RS资源包括1/P个CSI-RS端口组，其中，所述P为所述多个CSI-RS端口组的密度。In other embodiments of the present application, the number of CSI-RS port groups included in the one CSI-RS resource is determined according to the density of the multiple CSI-RS port groups. For example, the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the multiple CSI-RS port groups.
在一些实施例中，所述P为高层参数，或者，所述P为预定义参数。In some embodiments, the P is a high-level parameter, or the P is a predefined parameter.
换言之，该P可以是网络设备配置的，或者是固定参数，例如P为0.25，0.5等。In other words, the P may be configured by a network device, or a fixed parameter, for example, P is 0.25, 0.5, and so on.
在一些实施例中，所述CSI-RS相关参数可以包括该参数P。In some embodiments, the CSI-RS related parameters may include the parameter P.
在本申请一些实施例中，所述多个CSI-RS端口组的资源块偏移(rb-offset)不同。In some embodiments of the present application, resource block offsets (rb-offsets) of the multiple CSI-RS port groups are different.
作为一个示例，所述多个CSI-RS端口组的密度为0.5，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零(即第一个CSI-RS端口组对应偶数资源块RB)，第二个CSI-RS端口组的资源块偏移为1(即第二个CSI-RS端口组对应奇数资源块RB)。As an example, the density of the multiple CSI-RS port groups is 0.5, and the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero (that is, the first CSI-RS port group is The RS port group corresponds to an even-numbered resource block RB), and the resource block offset of the second CSI-RS port group is 1 (that is, the second CSI-RS port group corresponds to an odd-numbered resource block RB).
作为又一示例，所述多个CSI-RS端口组的密度为0.25，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1，第三个CSI-RS端口组的资源块偏移为2，第四个CSI-RS端口组的资源块偏移为3。As yet another example, the density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the second CSI-RS port group has zero offset. The resource block offset of the RS port group is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
在本申请一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数相同。例如，该一个CSI-RS资源的总端口数为32，该多个CSI-RS端口组为4个CSI-RS端口组，则 每个CSI-RS端口组包括的CSI-RS端口数均为8。In some embodiments of the present application, each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports. For example, if the total number of ports of the one CSI-RS resource is 32, and the multiple CSI-RS port groups are 4 CSI-RS port groups, the number of CSI-RS ports included in each CSI-RS port group is 8 .
在本申请另一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数不同。应理解，这里的每个CSI-RS端口组包括的CSI-RS端口数不同并不是指每两个CSI-RS端口组包括的CSI-RS端口数均不同，而是说，该多个CSI-RS端口组中可以存在CSI-RS端口数不同的CSI-RS端口组。In other embodiments of the present application, each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports. It should be understood that the different number of CSI-RS ports included in each CSI-RS port group here does not mean that the number of CSI-RS ports included in every two CSI-RS port groups is different, but that the multiple CSI-RS port groups include different numbers of CSI-RS ports. There may be CSI-RS port groups with different numbers of CSI-RS ports in the RS port group.
例如，该一个CSI-RS资源的总端口数为32，该多个CSI-RS端口组为4个CSI-RS端口组，则每个CSI-RS端口组包括的CSI-RS端口数可以依次为16，8，4，4，此情况下，该4个CSI-RS端口组可以包括4个密度为0.25的CSI-RS端口组。For example, if the total number of ports of the one CSI-RS resource is 32, and the multiple CSI-RS port groups are 4 CSI-RS port groups, the number of CSI-RS ports included in each CSI-RS port group may be sequentially as follows 16, 8, 4, and 4. In this case, the 4 CSI-RS port groups may include 4 CSI-RS port groups with a density of 0.25.
又例如，该一个CSI-RS资源的总端口数为48，该多个CSI-RS端口组为2个CSI-RS端口组，则每个CSI-RS端口组包括的CSI-RS端口数可以为32，16，此情况下，该2个CSI-RS端口组可以包括2个密度为0.5的CSI-RS端口组。For another example, if the total number of ports of the one CSI-RS resource is 48, and the multiple CSI-RS port groups are two CSI-RS port groups, the number of CSI-RS ports included in each CSI-RS port group may be 32 and 16. In this case, the two CSI-RS port groups may include two CSI-RS port groups with a density of 0.5.
在本申请一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8。可选地，所述第一值可以根据高层参数和/或预定义参数确定。In some embodiments of the present application, the number of CSI-RS ports included in the one CSI-RS resource is a first value, and the first value is 16 and/or 8. Optionally, the first value may be determined according to high-level parameters and/or predefined parameters.
作为示例，所述第一值为固定值，该固定值为16或8，或者，第一值为16和8中的一个值。As an example, the first value is a fixed value, which is 16 or 8, or the first value is one of 16 and 8.
在一些实施例中，所述一个CSI-RS资源包括2个密度为0.5的CSI-RS端口组仅用于所述一个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。In some embodiments, the one CSI-RS resource includes two CSI-RS port groups with a density of 0.5, and the total number of ports used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
作为示例，所述第二值为固定值，该固定值为32或16，或者，所述第二值为32和16中的一个值。As an example, the second value is a fixed value, which is 32 or 16, or the second value is one of 32 and 16.
在本申请另一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为8。In other embodiments of the present application, the number of CSI-RS ports included in the one CSI-RS resource is 8.
作为示例，所述一个CSI-RS资源包括4个密度为0.25的CSI-RS端口数仅用于所述一个CSI-RS资源的总端口数为32。As an example, the one CSI-RS resource includes 4 CSI-RS ports with a density of 0.25, and only the total number of ports used for the one CSI-RS resource is 32.
在本申请又一些实施例中，所述一个CSI-RS资源的总的CSI-RS端口数不超过第二阈值。In still other embodiments of the present application, the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
可选地，所述第二阈值可以是网络设备配置的，或者预定义的。Optionally, the second threshold may be configured by the network device or predefined.
换言之，该第二阈值可以为高层参数或预定义参数。In other words, the second threshold may be a high-level parameter or a predefined parameter.
作为示例，所述第二阈值可以为32或48。As an example, the second threshold may be 32 or 48.
在本申请一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组的数量由所述终端设备的能力确定。In some embodiments of the present application, the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device.
在本申请一些实施例中，所述多个CSI-RS端口组的密度为0.25由所述终端设备的能力确定。In some embodiments of the present application, the density of the multiple CSI-RS port groups is 0.25, which is determined by the capability of the terminal device.
在本申请一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组为一个或多个码分复用(Code Division Multiplexing，CDM)组。In some embodiments of the present application, the CSI-RS port group included in the one CSI-RS resource is one or more Code Division Multiplexing (Code Division Multiplexing, CDM) groups.
在一些实施例中，若所述多个CSI-RS端口组的总端口数为32，所述一个CSI-RS资源包括4个CDM组。In some embodiments, if the total number of ports in the multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM groups.
例如，一个时隙内的CSI-RS位置如表2所示，对于该表中第18行，在多个CSI-RS端口组的总端口数为32时，所述一个CSI-RS资源包括4个CDM组。For example, the CSI-RS positions in a time slot are shown in Table 2. For the 18th row in the table, when the total number of ports in multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM group.
表2Table 2
Figure PCTCN2021085408-appb-000014
Figure PCTCN2021085408-appb-000014
Figure PCTCN2021085408-appb-000015
Figure PCTCN2021085408-appb-000015
在一些实施例中，若所述多个CSI-RS端口组的密度为0.25，所述4个CDM组中的每个CDM组对应一个资源块偏移。In some embodiments, if the density of the plurality of CSI-RS port groups is 0.25, each of the four CDM groups corresponds to one resource block offset.
在另一些实施例中，若所述多个CSI-RS端口组的密度为0.5，所述4个CDM组中的两个CDM组对应一个资源块偏移。In other embodiments, if the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
表3示出了CSI-RS端口组的密度和资源块偏移的对应关系。Table 3 shows the correspondence between the density of the CSI-RS port group and the resource block offset.
表3table 3
Figure PCTCN2021085408-appb-000016
Figure PCTCN2021085408-appb-000016
例如，在多个CSI-RS端口组的密度为0.5，一个CSI-RS资源包括4个CDM组(CDM组0～3)时，4个CDM组中的两个CDM组对应一个资源块偏移，CDM组0和CDM组1对应Rb-offset0，CDM组2和CDM组3对应Rb-offset1。For example, when the density of multiple CSI-RS port groups is 0.5, and one CSI-RS resource includes four CDM groups (CDM groups 0 to 3), two CDM groups in the four CDM groups correspond to one resource block offset , CDM group 0 and CDM group 1 correspond to Rb-offset0, and CDM group 2 and CDM group 3 correspond to Rb-offset1.
又例如，在多个CSI-RS端口组的密度为0.25，一个CSI-RS资源包括4个CDM组(CDM组0～3)时，4个CDM组中的每个CDM组对应一个资源块偏移，CDM组0对应Rb-offset0，CDM组1对应Rb-offset1，CDM组2对应Rb-offset2，CDM组3对应Rb-offset3。For another example, when the density of multiple CSI-RS port groups is 0.25, and one CSI-RS resource includes 4 CDM groups (CDM groups 0 to 3), each CDM group in the 4 CDM groups corresponds to a resource block offset. Shift, CDM group 0 corresponds to Rb-offset0, CDM group 1 corresponds to Rb-offset1, CDM group 2 corresponds to Rb-offset2, and CDM group 3 corresponds to Rb-offset3.
因此，通过设计CSI-RS资源个数，CSI-RS资源的端口数，CSI-RS资源的密度、或CSI-RS资源包括的端口组的个数，CSI-RS资源的端口组所包括的端口的个数，能够实现通过频分复用方式降低CSI-RS资源开销。Therefore, by designing the number of CSI-RS resources, the number of ports of CSI-RS resources, the density of CSI-RS resources, or the number of port groups included in CSI-RS resources, the ports included in the port groups of CSI-RS resources The number of CSI-RS resources can be reduced by frequency division multiplexing.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
所述终端设备根据高层参数和/或预定义参数确定以下信息中的至少一个：The terminal device determines at least one of the following information according to high-level parameters and/or predefined parameters:
所述终端设备上报的频域基向量(FD basis)的数量M，其中，所述M为大于1的整数；The number M of frequency domain basis vectors (FD basis) reported by the terminal device, where the M is an integer greater than 1;
每个信道质量指示(Channel Quantity Indicator，CQI)子带的PMI子带数量R；The number R of PMI subbands for each channel quality indicator (Channel Quantity Indicator, CQI) subband;
所述终端设备测量CSI-RS和/或上报频域基向量的窗口位置S和长度N；The terminal equipment measures the CSI-RS and/or reports the window position S and length N of the frequency domain base vector;
所述终端设备上报最强系数(Strongest coefficient indicator，SCI)的位置f 0； The terminal device reports the position f 0 of the strongest coefficient (Strongest coefficient indicator, SCI);
所述终端设备上报的最大非零系数个数。The maximum number of non-zero coefficients reported by the terminal device.
在一些实施例中，所述M为素数，例如M为3。In some embodiments, the M is a prime number, eg, M is 3.
在一些实施例中，所述CQI子带的PMI子带数量R为以下集合中一个值：{1,2,4}，{1,2,4,8}。In some embodiments, the number R of PMI subbands of the CQI subbands is a value from the following set: {1, 2, 4}, {1, 2, 4, 8}.
作为示例，当且仅当M>1时，所述R为{1,2,4}或{1,2,4,8}中一个值。As an example, the R is one of {1,2,4} or {1,2,4,8} if and only if M>1.
在一些实施例中，所述终端设备测量CSI-RS和终端设备上报频域基向量的窗口位置和长度可以相同或者也可以不同。In some embodiments, the terminal device may measure the CSI-RS and the window position and length of the frequency domain base vector reported by the terminal device may be the same or may be different.
换言之，所述终端设备测量CSI-RS和/或终端设备上报频域基向量的窗口位置和长度可以包括：In other words, the terminal device measures the CSI-RS and/or the window position and length of the frequency domain basis vector reported by the terminal device may include:
所述终端设备测量CSI-RS的窗口位置S1和长度N1，和/或，The terminal device measures the window position S1 and length N1 of the CSI-RS, and/or,
所述终端设备上报频域基向量的窗口位置S2和长度N2。The terminal device reports the window position S2 and the length N2 of the frequency domain basis vector.
其中，S1和S2可以相同或不同，N1和N2可以相同或不同。Wherein, S1 and S2 may be the same or different, and N1 and N2 may be the same or different.
以下所示例的窗口位置S和长度N的实现方式可以适用于上述S1和N1，以及S2和N2。The implementation manner of the window position S and length N exemplified below can be applied to the above-mentioned S1 and N1, as well as S2 and N2.
在一些实施例中，所述S为零。In some embodiments, the S is zero.
在另一些实施例中，所述窗口位置S可以根据PMI子带个数确定。In other embodiments, the window position S may be determined according to the number of PMI subbands.
例如S＝i×N 3/a，其中，i＝0,1,…,a-1中的一个，其中，所述a为高层参数或预定义参数，所述N 3为PMI子带个数。 For example, S =i×N 3 /a, where i=one of 0, 1, . .
作为示例，所述a可以为{2,4}中的一个。As an example, the a may be one of {2, 4}.
在一些实施例中，所述CSI相关参数可以包括所述参数a。In some embodiments, the CSI related parameters may include the parameter a.
在一些实施例中，所述N为素数，例如1,3,5,7等。In some embodiments, the N is a prime number, such as 1, 3, 5, 7, etc.
在一些实施例中，多个终端设备可以通过时分方式复用CSI-RS资源，例如，不同终端设备上报最强系数的位置可以是时分的，或者，终端设备上报频域基向量的窗口位置S可以是时分的，有利于降低CSI-RS资源开销。In some embodiments, multiple terminal devices may multiplex CSI-RS resources in a time-division manner. For example, the position where different terminal devices report the strongest coefficients may be time-divisional, or the terminal device reports the window position S of the frequency domain basis vector. It can be time-division, which is beneficial to reduce the CSI-RS resource overhead.
在一些实施例中，窗口起始位置S可以是网络设备配置的，或者预定义的。In some embodiments, the window starting position S may be configured by the network device or predefined.
例如，网络设备可以通过高层信令，例如无线资源控制信令(Radio Resource Control，RRC)或物理层信令，例如下行控制信息(Downlink Control Information，DCI)配置该窗口起始位置S。For example, the network device may configure the window start position S through high-level signaling, such as radio resource control signaling (Radio Resource Control, RRC) or physical layer signaling, such as downlink control information (Downlink Control Information, DCI).
在一些实施例中，所述f 0为零。 In some embodiments, the f 0 is zero.
在另一些实施例中，所述上报最强系数的位置f 0可以根据高层参数确定。例如，该高层参数可以包括PMI子带个数。 In other embodiments, the position f 0 where the strongest coefficient is reported may be determined according to high-level parameters. For example, the higher layer parameter may include the number of PMI subbands.
例如f 0＝i×N 3/b，其中，i＝0,1,…,b-1中的一个，其中，所述b为高层参数或预定义参数，所述N 3为PMI子带个数。 For example, f 0 =i×N 3 /b, where i = one of 0, 1, . number.
作为示例，所述b可以为{2,4}中的一个。As an example, the b may be one of {2, 4}.
在一些实施例中，所述CSI相关参数可以包括所述参数b。In some embodiments, the CSI-related parameters may include the parameter b.
在一些实施例中，终端设备计算M个FD basis的序号依次是f 0，f 1，…，f M-1，在具体实现中，可以通过循环移位的方式使得最强系数f SCI＝f 0。 In some embodiments, the sequence numbers of the M FD basis calculated by the terminal device are f 0 , f 1 , . 0 .
在一些实施例中，所述终端设备上报频域基向量的窗口的起始位置M initial＝mod(f 0-Δ,N 3)，其中，Δ为高层参数或预定义参数。作为示例，Δ可以为N/2。 In some embodiments, the terminal device reports the starting position of the window of the frequency-domain basis vector M initial =mod(f 0 -Δ, N 3 ), where Δ is a high-level parameter or a predefined parameter. As an example, Δ may be N/2.
所述终端设备上报频域基向量的窗口包括的频域基向量f∈mod(M initial+i，N 3)，i＝0,1,…,N-1，其中，mod()表示取模运算。 The frequency-domain basis vector f∈mod(M initial +i, N 3 ), i=0, 1, . operation.
在一些实施例中，若M＝1，秩等于1，最大非零系数个数为K0，秩(rank)大于1，所有层总的最大非零系数个数为
Figure PCTCN2021085408-appb-000017
In some embodiments, if M=1, the rank is equal to 1, the maximum number of non-zero coefficients is K0, the rank (rank) is greater than 1, and the total maximum number of non-zero coefficients in all layers is
Figure PCTCN2021085408-appb-000017
在另一些实施例中，若M>1，秩等于1，最大非零系数个数为
Figure PCTCN2021085408-appb-000018
秩大于1，所有层总的最大非零系数个数为
Figure PCTCN2021085408-appb-000019
In other embodiments, if M>1, the rank is equal to 1, and the maximum number of non-zero coefficients is
Figure PCTCN2021085408-appb-000018
If the rank is greater than 1, the total maximum number of non-zero coefficients in all layers is
Figure PCTCN2021085408-appb-000019
可选地，该α≥1。Optionally, the α≧1.
可选地，该α可以是高层参数或预定义参数。换言之，α可以是网络设备配置的，或者预定义的。Optionally, the α may be a high-level parameter or a predefined parameter. In other words, α may be configured by the network device, or predefined.
可选地，K0根据用于上报CSI的CSI端口的总数量P CSI-RS确定，例如，
Figure PCTCN2021085408-appb-000020
用于限制CSI上报开销。 Optionally, K0 is determined according to the total number P CSI-RS of CSI ports used for reporting CSI, for example,
Figure PCTCN2021085408-appb-000020
Used to limit CSI reporting overhead.
例如，P CSI-RS可以为目标CSI-RS资源包括的CSI-RS端口的总数量，或者，若终端设备通过CSI-RS资源集合中的所有CSI-RS资源发送CSI，该P CSI-RS可以为所有CSI-RS资源包括的CSI-RS端口数。 For example, P CSI-RS may be the total number of CSI-RS ports included in the target CSI-RS resource, or, if the terminal device transmits CSI through all CSI-RS resources in the CSI-RS resource set, the P CSI-RS may be is the number of CSI-RS ports included in all CSI-RS resources.
可选地，β≥1。Optionally, β≥1.
可选地，该β可以是高层参数或预定义参数。换言之，β可以是网络设备配置的，或者预定义的。Optionally, the β can be a high-level parameter or a predefined parameter. In other words, β can be configured by the network device, or predefined.
可选地，γ≥1。Optionally, γ≧1.
可选地，该γ可以是高层参数或预定义参数。换言之，γ可以是网络设备配置的，或者预定义的。Optionally, the γ may be a high-level parameter or a predefined parameter. In other words, γ may be configured by the network device, or predefined.
可选地，所述CSI相关参数可以包括所述α,β,γ中的一个或多个。Optionally, the CSI-related parameters may include one or more of the α, β, and γ.
在本申请一些实施例中，所述S203可以包括：In some embodiments of the present application, the S203 may include:
所述终端设备向所述网络设备上报所述PMI。The terminal device reports the PMI to the network device.
在一些实施例中，所述终端设备向所述网络设备上报所述PMI，包括以下中的至少一项：In some embodiments, the terminal device reports the PMI to the network device, including at least one of the following:
所述终端设备上报所述M个频域基向量；reporting, by the terminal device, the M frequency domain base vectors;
所述终端设备上报所述M个频域基向量对应的窗的起始位置；reporting, by the terminal device, the starting positions of the windows corresponding to the M frequency-domain basis vectors;
所述终端设备上报最强系数SCI；The terminal equipment reports the strongest coefficient SCI;
所述终端设备上报非零系数；the terminal device reports a non-zero coefficient;
所述终端设备上报CQI；the terminal equipment reports the CQI;
所述终端设备上报第一指示信息，所述第一指示信息用于确定最强系数。The terminal device reports first indication information, where the first indication information is used to determine the strongest coefficient.
在一些实施例中，所述第一指示信息包括端口位置指示信息和/或频域位置指示信息。In some embodiments, the first indication information includes port location indication information and/or frequency domain location indication information.
在一些实施例中，所述端口位置指示信息用于指示用于上报CSI的CSI-RS资源的CSI-RS端口的位置。In some embodiments, the port position indication information is used to indicate the position of a CSI-RS port used for reporting CSI-RS resources of CSI.
在一些实施例中，所述频域位置指示信息用于指示最强系数的频域位置信息。In some embodiments, the frequency domain location indication information is used to indicate frequency domain location information of the strongest coefficients.
作为一个示例，所述频域位置指示信息用于指示最强系数的频域位置相对于窗口起始位置S的偏移量，记为f Δ。 As an example, the frequency domain position indication information is used to indicate the offset of the frequency domain position of the strongest coefficient relative to the starting position S of the window, which is denoted as f Δ .
作为另一示例，所述频域位置指示信息用于指示最强系数的绝对频域位置，其中，该最强系数的绝对频域位置根据窗口起始位置S和相对于窗口起始位置S的偏移量f Δ确定。 As another example, the frequency-domain position indication information is used to indicate the absolute frequency-domain position of the strongest coefficient, wherein the absolute frequency-domain position of the strongest coefficient is based on the window start position S and relative to the window start position S The offset fΔ is determined.
例如，最强系数的绝对频域位置通过mod(S+f Δ，N3)确定，其中N3表示PMI子带个数。 For example, the absolute frequency domain position of the strongest coefficient is determined by mod(S+f Δ , N3 ), where N3 represents the number of PMI subbands.
可选地，该窗口起始位置S可以是网络设备配置的，或者预定义的，例如网络设备通过RRC信令或DCI配置该S。Optionally, the window start position S may be configured by the network device or predefined, for example, the network device configures the S through RRC signaling or DCI.
在一些实施例中，终端设备可以对每一层进行循环移位操作，使得每层的最强系数的频域位置相对窗口起始位置S的偏移量f Δ相同。即所有层可以采用公共的f Δ，这样，在上报频域位置指示信息时，可以只上报一个频域位置指示信息，有利于降低CSI开销。 In some embodiments, the terminal device may perform a cyclic shift operation on each layer, so that the offset f Δ of the frequency domain position of the strongest coefficient of each layer relative to the starting position S of the window is the same. That is, all layers can use a common f Δ , so that when reporting frequency domain location indication information, only one frequency domain location indication information can be reported, which is beneficial to reduce CSI overhead.
在一些实施例中，最强系数的频域位置相对窗口起始位置S的偏移量f Δ可以根据窗口长N确定。例如，可以根据N和系数k，确定f Δ，例如k可以为1/2，1/3等。作为示例，f Δ＝N/2。 In some embodiments, the offset f Δ of the frequency domain position of the strongest coefficient relative to the window start position S may be determined according to the window length N. For example, f Δ may be determined according to N and coefficient k, for example, k may be 1/2, 1/3, etc. As an example, f Δ =N/2.
可选地，该窗口长度N可以是网络设备配置的，或者预定义的，例如网络设备通过RRC信令或DCI配置该N。Optionally, the window length N may be configured by the network device or predefined, for example, the network device configures the N through RRC signaling or DCI.
其中，该窗口起始位置S和长度N用于确定上报频域基向量的窗口。Wherein, the window start position S and length N are used to determine the window for reporting the frequency domain basis vector.
在一些实施例中，k可以是网络设备配置的，或者预定义的，例如通过高层信令或DCI配置。In some embodiments, k may be configured by the network device, or pre-defined, such as through higher layer signaling or DCI.
在一些实施例中，最强系数的频域位置相对窗口起始位置S的偏移量f Δ可以是网络设备配置的，或者预定义的，例如网络设备通过高层信令或DCI配置该f Δ。 In some embodiments, the offset f Δ of the frequency domain position of the strongest coefficient relative to the starting position S of the window may be configured by the network device, or pre-defined, for example, the network device configures the f Δ through high-layer signaling or DCI .
在一些实施例中，所述端口位置指示信息的位宽可以根据K 1比特或2L比特确定，例如为K 1比特或2L比特，或者为
Figure PCTCN2021085408-appb-000021
比特或
Figure PCTCN2021085408-appb-000022
比特。其中，K 1，2L表示所述终端设备选择用于上报CSI的CSI-RS资源的CSI-RS端口数。 In some embodiments, the bit width of the port position indication information may be determined according to K 1 bits or 2L bits, for example, K 1 bits or 2L bits, or
Figure PCTCN2021085408-appb-000021
bits or
Figure PCTCN2021085408-appb-000022
bits. Wherein, K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
在一些实施例中，所述频域位置指示信息的位宽可以根据窗口长度N确定，例如为N比特或
Figure PCTCN2021085408-appb-000023
比特。 In some embodiments, the bit width of the frequency domain location indication information may be determined according to the window length N, for example, N bits or
Figure PCTCN2021085408-appb-000023
bits.
在一些实现方式中，对于层数v大于1，对于每一层，终端设备上报每一层对应的端口位置指示 信息，即端口位置指示信息是层粒度的，此情况下，终端设备上报的端口位置信息所占的总位宽可以为v个K 1比特或2L比特，或者v个
Figure PCTCN2021085408-appb-000024
比特或
Figure PCTCN2021085408-appb-000025
比特。 In some implementations, if the number of layers v is greater than 1, for each layer, the terminal device reports the port location indication information corresponding to each layer, that is, the port location indication information is layer-granular. The total bit width occupied by the location information can be v K 1 -bit or 2L-bit, or v
Figure PCTCN2021085408-appb-000024
bits or
Figure PCTCN2021085408-appb-000025
bits.
在一些实现方式中，对于层数v大于1，对于每一层，终端设备上报一个频域位置指示信息，即所有层可以采用公共的频域位置指示信息。此情况下，终端设备上报的频域位置信息所占的总位宽可以为N比特或
Figure PCTCN2021085408-appb-000026
比特。 In some implementations, when the number of layers v is greater than 1, for each layer, the terminal device reports one frequency domain location indication information, that is, all layers can use common frequency domain location indication information. In this case, the total bit width occupied by the frequency domain location information reported by the terminal equipment may be N bits or
Figure PCTCN2021085408-appb-000026
bits.
在一些实施例中，所述M个频域基向量是从N个频域基向量中选择的，所述N个频域基向量f∈mod(S+i，N 3)，i＝0,1,…,N-1。 In some embodiments, the M frequency-domain basis vectors are selected from N frequency-domain basis vectors, the N frequency-domain basis vectors f ∈ mod(S+i, N 3 ), i=0, 1,…,N-1.
可选地，所述终端设备通过
Figure PCTCN2021085408-appb-000027
比特上报每一层或所有层的频域基向量。 Optionally, the terminal device passes
Figure PCTCN2021085408-appb-000027
The bit reports the frequency domain basis vector of each layer or all layers.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000028
比特上报频域基向量的窗口的起始位置，对应于前文所述的M initial。作为示例，每层分别以
Figure PCTCN2021085408-appb-000029
比特上报，或者，每层对应的频域基向量相同。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000028
The starting position of the window of the frequency-domain basis vector of the bit-reported basis vector corresponds to the M initial described above. As an example, each layer starts with
Figure PCTCN2021085408-appb-000029
Bit reporting, or the corresponding frequency-domain basis vectors of each layer are the same.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000030
或
Figure PCTCN2021085408-appb-000031
比特上报所述最强系数，其中，K 1，2L表示所述终端设备选择用于上报CSI的CSI-RS资源的CSI-RS端口数。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000030
or
Figure PCTCN2021085408-appb-000031
The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
在另一些实施例中，若秩等于1(或者说，层数等于1)，所述终端设备通过
Figure PCTCN2021085408-appb-000032
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In other embodiments, if the rank is equal to 1 (or in other words, the number of layers is equal to 1), the terminal device passes the
Figure PCTCN2021085408-appb-000032
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1(或者说，层数大于1)，所述终端设备通过
Figure PCTCN2021085408-appb-000033
比特上报每一层的最强系数，其中，α为高层参数或预定义参数，K0的确定方式参考前文所述实施例。 If the rank is greater than 1 (or in other words, the number of layers is greater than 1), the terminal device passes the
Figure PCTCN2021085408-appb-000033
The bit reports the strongest coefficient of each layer, where α is a high-level parameter or a predefined parameter, and the determination method of K0 refers to the foregoing embodiments.
在又一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000034
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In still other embodiments, if the rank is equal to 1, the terminal device passes the
Figure PCTCN2021085408-appb-000034
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1，所述终端设备通过
Figure PCTCN2021085408-appb-000035
比特上报每一层的最强系数。 If the rank is greater than 1, the terminal device passes the
Figure PCTCN2021085408-appb-000035
Bits report the strongest coefficient for each layer.
在又一些实施例中，若秩等于1(或者说，层数等于1)，所述终端设备通过
Figure PCTCN2021085408-appb-000036
比特上报所述最强系数；或者 In still other embodiments, if the rank is equal to 1 (or in other words, the number of layers is equal to 1), the terminal device passes the
Figure PCTCN2021085408-appb-000036
bit reporting the strongest coefficient; or
若秩大于1(或者说，层数大于1)，所述终端设备上报所述最强系数所在的层，并且通过
Figure PCTCN2021085408-appb-000037
或
Figure PCTCN2021085408-appb-000038
比特上报最强系数在所述层中的位置，其中，α为高层参数或预定义参数，K0的确定方式参考前文所述实施例。 If the rank is greater than 1 (or the number of layers is greater than 1), the terminal device reports the layer where the strongest coefficient is located, and passes the
Figure PCTCN2021085408-appb-000037
or
Figure PCTCN2021085408-appb-000038
The bit reports the position of the strongest coefficient in the layer, where α is a high-level parameter or a predefined parameter, and reference is made to the foregoing embodiments for the determination method of K0.
在一些实施例中，若M大于1，对于所述终端设备用于上报CSI的每个CSI-RS端口，例如，目标CSI-RS资源包括的CSI-RS端口，所述终端设备只上报一个非零系数。In some embodiments, if M is greater than 1, for each CSI-RS port used by the terminal device to report CSI, for example, the CSI-RS port included in the target CSI-RS resource, the terminal device only reports one non-identical CSI-RS port. zero coefficient.
在一些实施例中，所述终端设备向所述网络设备上报CQI，包括：In some embodiments, the terminal device reports the CQI to the network device, including:
所述终端设备仅上报宽带CQI，或者，将CQI格式指示(cqi-FormatIndicator)设置为宽度CQI(widebandCQI)；或者The terminal device only reports the wideband CQI, or sets the CQI format indicator (cqi-FormatIndicator) to the wideband CQI (widebandCQI); or
若M大于1，所述终端设备上报子带CQI，或者，将CQI格式指示(cqi-FormatIndicator)设置为子带CQI(subbandCQI)。If M is greater than 1, the terminal device reports the subband CQI, or sets the CQI format indicator (cqi-FormatIndicator) as subband CQI (subbandCQI).
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
所述终端设备根据用于上报CSI的至少一个CSI-RS资源计算CQI。The terminal device calculates the CQI according to at least one CSI-RS resource used for reporting CSI.
即终端设备根据所述目标CSI-RS资源计算CQI，该目标CSI-RS资源可以包括CSI-RS资源集合中的部分或全部CSI-RS资源。That is, the terminal device calculates the CQI according to the target CSI-RS resource, and the target CSI-RS resource may include part or all of the CSI-RS resource in the CSI-RS resource set.
在本申请一些实施例中，所述方法200还包括：In some embodiments of the present application, the method 200 further includes:
所述终端设备根据高层参数或预定义参数确定CQI子带大小。The terminal device determines the CQI subband size according to higher layer parameters or predefined parameters.
CQI子带大小可以指每个CQI子带包括的物理资源块(physical resource block，PRB)的个数。The CQI subband size may refer to the number of physical resource blocks (physical resource blocks, PRBs) included in each CQI subband.
作为一个示例，所述CQI子带大小
Figure PCTCN2021085408-appb-000039
根据上报带宽
Figure PCTCN2021085408-appb-000040
和第一参数d1确定，所述第一参数是高层参数或预定义参数。 As an example, the CQI subband size
Figure PCTCN2021085408-appb-000039
According to the reported bandwidth
Figure PCTCN2021085408-appb-000040
and the first parameter d1, where the first parameter is a high-level parameter or a predefined parameter.
例如，
Figure PCTCN2021085408-appb-000041
例如d1＝1，2，4。 E.g,
Figure PCTCN2021085408-appb-000041
For example d1=1,2,4.
作为又一示例，所述CQI子带大小
Figure PCTCN2021085408-appb-000042
根据标称子带大小
Figure PCTCN2021085408-appb-000043
和第二参数d2确定，所述 第二参数d2是高层参数或预定义参数。 As yet another example, the CQI subband size
Figure PCTCN2021085408-appb-000042
According to the nominal subband size
Figure PCTCN2021085408-appb-000043
and the second parameter d2, where the second parameter d2 is a high-level parameter or a predefined parameter.
可选地，所述标称子带大小
Figure PCTCN2021085408-appb-000044
根据带宽部分(Band Width Part，BWP)大小和高层参数子带大小(subbandSize)确定。 Optionally, the nominal subband size
Figure PCTCN2021085408-appb-000044
It is determined according to the Band Width Part (Band Width Part, BWP) size and the high-layer parameter subbandSize.
可选地，该第二参数
Figure PCTCN2021085408-appb-000045
Optionally, the second parameter
Figure PCTCN2021085408-appb-000045
综上，该CQI子带大小可以根据特定带宽和一个缩放因子确定，该特定带宽可以为前文所述的上报带宽或标称子带大小，或者也可以为其他参考带宽，该缩放因子可以是高层参数，或者预定义参数。例如，该缩放因子可以为1，1/2或1/4等。To sum up, the CQI subband size can be determined according to a specific bandwidth and a scaling factor. The specific bandwidth can be the reporting bandwidth or the nominal subband size described above, or can also be other reference bandwidths, and the scaling factor can be a higher layer parameters, or predefined parameters. For example, the scaling factor can be 1, 1/2 or 1/4, etc.
因此，在本申请实施例中，网络设备可以给终端设备配置CSI-RS资源集合，其中，该CSI-RS资源集合包括至少一个CSI-RS资源，终端设备基于网络设备配置的CSI-RS资源集合和/或CSI相关参数，确定CSI，进一步通过CSI-RS资源集合中的CSI-RS资源向网络设备上报CSI，能够降低CSI-RS资源开销。Therefore, in this embodiment of the present application, the network device may configure a CSI-RS resource set for the terminal device, where the CSI-RS resource set includes at least one CSI-RS resource, and the terminal device is based on the CSI-RS resource set configured by the network device. and/or CSI-related parameters, determine CSI, and further report CSI to the network device through the CSI-RS resources in the CSI-RS resource set, which can reduce the CSI-RS resource overhead.
因此，本申请实施例通过从SRS估计空间域与时延(DFT转换域)的特性，能够压缩码本开销，提高反馈效率，提高***鲁棒性。在天线数较多或者用户数较多，CSI-RS占用了大量了下行资源开销，不同频域承载多个波束，采用前述设计能够降低所需CSI-RS的开销。Therefore, the embodiments of the present application can compress codebook overhead, improve feedback efficiency, and improve system robustness by estimating the characteristics of space domain and time delay (DFT transform domain) from SRS. When the number of antennas is large or the number of users is large, the CSI-RS occupies a large amount of downlink resource overhead, and different frequency domains carry multiple beams. The above-mentioned design can reduce the overhead of the required CSI-RS.
例如，通过设计CSI-RS资源个数，CSI-RS资源的端口数，CSI-RS资源的密度、或CSI-RS资源包括的端口组的个数，CSI-RS资源的端口组所包括的端口的个数，能够通过频分复用降低CSI-RS开销。For example, by designing the number of CSI-RS resources, the number of ports of CSI-RS resources, the density of CSI-RS resources, or the number of port groups included in CSI-RS resources, the ports included in the port groups of CSI-RS resources The number of CSI-RSs can be reduced by frequency division multiplexing.
又例如，通过设计不同的终端设备对应不同的窗口位置，或者说(时延)能够使得多个终端设备通过时分复用相同的物理资源，达到降低CSI-RS资源开销的效果。For another example, by designing different terminal devices to correspond to different window positions, or (time delay), multiple terminal devices can time-division multiplex the same physical resources to reduce CSI-RS resource overhead.
并且，基站从空间/频域赋型后，信道变得平坦，通过简单的参数配置(例如，一两个FD/大子带带宽)可以很好的反映信道信息，同时降低UE实现复杂度。Moreover, after the base station is shaped from the space/frequency domain, the channel becomes flat, and the channel information can be well reflected by simple parameter configuration (for example, one or two FD/large subband bandwidth), while reducing the complexity of UE implementation.
上文结合图2，详细描述了本申请的方法实施例，下文结合图3至图7，详细描述本申请的装置实施例，应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。The method embodiment of the present application is described in detail above with reference to FIG. 2 , and the device embodiment of the present application is described in detail below with reference to FIGS. 3 to 7 . It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions may be See method examples.
图3示出了根据本申请实施例的终端设备400的示意性框图。如图3所示，该终端设备300包括：FIG. 3 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 3, the terminal device 300 includes:
通信单元310，用于接收网络设备发送的信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；The communication unit 310 is configured to receive a channel state information reference signal CSI-RS resource set sent by a network device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS resource. RS port, where Ks is an integer greater than or equal to 1;
处理单元320，用于根据所述CSI-RS资源集合和/或CSI相关参数，确定信道状态信息CSI，其中，所述CSI包括预编码矩阵指示PMI；A processing unit 320, configured to determine channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
所述通信单元310还用于向所述网络设备上报所述CSI。The communication unit 310 is further configured to report the CSI to the network device.
在一些实施例中，所述CSI相关参数包括高层参数和/或预定义参数。In some embodiments, the CSI related parameters include higher layer parameters and/or predefined parameters.
在一些实施例中，所述Ks个CSI-RS资源的密度相同，所述Ks个CSI-RS资源的密度为0.25。In some embodiments, the density of the Ks CSI-RS resources is the same, and the density of the Ks CSI-RS resources is 0.25.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.25仅用于所述Ks个CSI-RS资源的总端口数为32。In some embodiments, the density of the Ks CSI-RS resources is 0.25 only for the total number of ports of the Ks CSI-RS resources to be 32.
在一些实施例中，所述Ks个CSI-RS资源为1/D个CSI-RS资源，其中，所述D为所述Ks个CSI-RS资源的密度。In some embodiments, the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
在一些实施例中，所述D为高层参数，或者，所述D为预定义参数。In some embodiments, the D is a high-level parameter, or the D is a predefined parameter.
在一些实施例中，所述Ks个CSI-RS资源的资源块偏移不同。In some embodiments, the resource block offsets of the Ks CSI-RS resources are different.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.5，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1；或者In some embodiments, the density of the Ks CSI-RS resources is 0.5, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the second CSI-RS resource The resource block offset is 1; or
所述Ks个CSI-RS资源的密度为0.25，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1，第三个CSI-RS资源的资源块偏移为2，第四个CSI-RS资源的资源块偏移为3。The density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is 1. The resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
在一些实施例中，所述每个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述Ks个CSI-RS资源包括2个密度为0.5的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。In some embodiments, the number of CSI-RS ports included in each CSI-RS resource is a first value, the first value is 16 and/or 8, and the Ks CSI-RS resources include 2 densities A CSI-RS resource of 0.5 is only used for the total number of ports of the Ks CSI-RS resources is a second value, and the second value is 32 and/or 16.
在一些实施例中，所述每个CSI-RS资源包括的CSI-RS端口数为8，所述Ks个CSI-RS资源包括4个密度为0.25的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为32。In some embodiments, the number of CSI-RS ports included in each CSI-RS resource is 8, and the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources The total number of ports for CSI-RS resources is 32.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不超过第一阈值。In some embodiments, the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数相同。In some embodiments, all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不同。In some embodiments, all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports.
在一些实施例中，所述CSI-RS资源集合包括的CSI-RS资源的数量Ks由所述终端设备的能力确 定，和/或In some embodiments, the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device, and/or
所述Ks个CSI-RS资源的密度为0.25由所述终端设备的能力确定。The density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
在一些实施例中，所述处理单元320还用于：In some embodiments, the processing unit 320 is further configured to:
在所述Ks个CSI-RS资源中确定目标CSI-RS资源，所述目标CSI-RS资源用于上报所述CSI。A target CSI-RS resource is determined among the Ks CSI-RS resources, and the target CSI-RS resource is used for reporting the CSI.
在一些实施例中，所述通信单元310还用于：In some embodiments, the communication unit 310 is further configured to:
向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述目标CSI-RS资源。Send first indication information to the network device, where the first indication information is used to indicate the target CSI-RS resource.
在一些实施例中，所述目标CSI-RS资源包括的CSI-RS资源的数量为一个，所述第一指示信息包括CSI-RS资源指示CRI，所述CRI用于指示所述一个目标CSI-RS资源；或者In some embodiments, the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indication CRI, where the CRI is used to indicate the one target CSI-RS resource. RS resources; or
所述目标CSI-RS资源包括多个CSI-RS资源，所述第一指示信息通过比特位图或组合方式指示所述多个CSI-RS资源。The target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
在一些实施例中，所述第一指示信息包括Ks个比特，或者，
Figure PCTCN2021085408-appb-000046
个比特，其中，所述K为所述多个CSI-RS资源的数量，
Figure PCTCN2021085408-appb-000047
表示向上取整。 In some embodiments, the first indication information includes Ks bits, or,
Figure PCTCN2021085408-appb-000046
bits, where the K is the number of the multiple CSI-RS resources,
Figure PCTCN2021085408-appb-000047
Indicates rounded up.
在一些实施例中，所述K为高层参数或者预定义参数，或者，所述K根据所述Ks确定。In some embodiments, the K is a high-level parameter or a predefined parameter, or the K is determined according to the Ks.
在一些实施例中，所述K根据所述Ks和第一系数确定，所述第一系数为高层参数或者预定义参数。In some embodiments, the K is determined according to the Ks and a first coefficient, where the first coefficient is a high-level parameter or a predefined parameter.
在一些实施例中，所述通信单元310还用于：In some embodiments, the communication unit 310 is further configured to:
在所述目标CSI-RS资源包括所述Ks个CSI-RS资源的情况下，不向所述网络设备发送CRI。In the case that the target CSI-RS resource includes the Ks CSI-RS resources, no CRI is sent to the network device.
在一些实施例中，所述目标CSI-RS资源包括多个CSI-RS资源，所述方法还包括：In some embodiments, the target CSI-RS resource includes multiple CSI-RS resources, and the method further includes:
对于所述多个CSI-RS资源中的每个CSI-RS资源，将PMI的端口序号从所述每个CSI-RS资源的第一个CSI-RS端口到所述每个CSI-RS资源的最后一个CSI-RS端口依次映射。For each CSI-RS resource in the plurality of CSI-RS resources, set the port sequence number of the PMI from the first CSI-RS port of each CSI-RS resource to the port number of each CSI-RS resource The last CSI-RS port is mapped sequentially.
在一些实施例中，所述Ks个CSI-RS资源为1个CSI-RS资源，所述一个CSI-RS资源包括多个CSI-RS端口组。In some embodiments, the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
在一些实施例中，所述多个CSI-RS端口组的密度相同，并且所述多个CSI-RS端口组的密度为0.25。In some embodiments, the densities of the plurality of CSI-RS port groups are the same, and the densities of the plurality of CSI-RS port groups are 0.25.
在一些实施例中，所述多个CSI-RS端口组的密度为0.25仅用于所述一个CSI-RS资源的总端口数为32。In some embodiments, the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports used for the one CSI-RS resource is 32.
在一些实施例中，所述一个CSI-RS资源包括1/P个CSI-RS端口组，其中，所述P为所述多个CSI-RS端口组的密度。In some embodiments, the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the plurality of CSI-RS port groups.
在一些实施例中，所述P为高层参数，或者，所述P为预定义参数。In some embodiments, the P is a high-level parameter, or the P is a predefined parameter.
在一些实施例中，所述多个CSI-RS端口组的资源块偏移不同。In some embodiments, the resource block offsets of the plurality of CSI-RS port groups are different.
在一些实施例中，所述多个CSI-RS端口组的密度为0.5，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1；或者In some embodiments, the density of the plurality of CSI-RS port groups is 0.5, the resource block offset of the first CSI-RS port group of the plurality of CSI-RS port groups is zero, and the second CSI-RS port group has zero offset. - the resource block offset of the RS port group is 1; or
所述多个CSI-RS端口组的密度为0.25，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1，第三个CSI-RS端口组的资源块偏移为2，第四个CSI-RS端口组的资源块偏移为3。The density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the resources of the second CSI-RS port group The block offset is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述一个CSI-RS资源包括2个密度为0.5的CSI-RS端口组仅用于所述一个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。In some embodiments, the number of CSI-RS ports included in the one CSI-RS resource is a first value, the first value is 16 and/or 8, and the one CSI-RS resource includes 2 ports with a density of 0.5 The total number of ports of the CSI-RS port group used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为8，所述一个CSI-RS资源包括4个密度为0.25的CSI-RS端口数仅用于所述一个CSI-RS资源的总端口数为32。In some embodiments, the number of CSI-RS ports included in the one CSI-RS resource is 8, and the number of CSI-RS ports included in the one CSI-RS resource with a density of 0.25 is only used for the one CSI-RS The total number of ports for RS resources is 32.
在一些实施例中，所述一个CSI-RS资源的总的CSI-RS端口数不超过第二阈值。In some embodiments, the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
在一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数相同。In some embodiments, each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports.
在一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数不同。In some embodiments, each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组的数量由所述终端设备的能力确定，和/或In some embodiments, the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device, and/or
所述多个CSI-RS端口组的密度为0.25由所述终端设备的能力确定。36、根据权利要求23-35中任一项所述的方法，其特征在于，所述CSI-RS端口组为一个或多个码分复用CDM组。The density of the plurality of CSI-RS port groups of 0.25 is determined by the capability of the terminal device. 36. The method according to any one of claims 23-35, wherein the CSI-RS port group is one or more code division multiplexing CDM groups.
在一些实施例中，若所述多个CSI-RS端口组的总端口数为32，所述一个CSI-RS资源包括4个CDM组。In some embodiments, if the total number of ports in the multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM groups.
在一些实施例中，若所述多个CSI-RS端口组的密度为0.25，所述4个CDM组中的每个CDM组对应一个资源块偏移；或者In some embodiments, if the density of the plurality of CSI-RS port groups is 0.25, each of the four CDM groups corresponds to a resource block offset; or
若所述多个CSI-RS端口组的密度为0.5，所述4个CDM组中的两个CDM组对应一个资源块偏移。If the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
在一些实施例中，所述处理单元320还用于：In some embodiments, the processing unit 320 is further configured to:
根据高层参数和/或预定义参数确定以下信息中的至少一个：At least one of the following information is determined based on high-level parameters and/or predefined parameters:
所述终端设备上报的频域基向量的数量M，其中，所述M为大于1的整数；The number M of frequency-domain basis vectors reported by the terminal device, where M is an integer greater than 1;
每个信道质量指示CQI子带的PMI子带数量R；The number R of PMI subbands for each channel quality indication CQI subband;
所述终端设备测量CSI-RS和/或上报频域基向量的窗口位置S和长度N；The terminal equipment measures the CSI-RS and/or reports the window position S and length N of the frequency domain base vector;
所述终端设备上报最强系数的位置f 0； the terminal equipment reports the position f 0 of the strongest coefficient;
所述终端设备上报的最大非零系数个数。The maximum number of non-zero coefficients reported by the terminal device.
在一些实施例中，所述M为素数。In some embodiments, the M is a prime number.
在一些实施例中，所述R为以下集合中一个值：{1,2,4}，{1,2,4,8}。In some embodiments, the R is one of the following set of values: {1,2,4}, {1,2,4,8}.
在一些实施例中，当且仅当M>1时，所述R为{1,2,4,8}中一个值。In some embodiments, the R is a value of {1, 2, 4, 8} if and only if M>1.
在一些实施例中，所述S为零；或者In some embodiments, the S is zero; or
所述S＝i×N 3/a，其中，i＝0,1,…,a-1中的一个，其中，所述a为高层参数或预定义参数，所述N 3为PMI子带个数。 The S =i×N 3 /a, where i=one of 0, 1, . number.
在一些实施例中，所述N为素数。In some embodiments, the N is a prime number.
在一些实施例中，所述f 0为零；或者 In some embodiments, the f 0 is zero; or
所述f 0＝i×N 3/b，其中，i＝0,1,…,b-1中的一个，其中，所述b为高层参数或预定义参数，所述N 3为PMI子带个数。 The f 0 =i×N 3 /b, where i=one of 0,1,...,b-1, where the b is a high-level parameter or a predefined parameter, and the N 3 is a PMI subband number.
在一些实施例中，所述终端设备上报频域基向量的窗口的起始位置M initial＝mod(f 0-Δ,N 3)，其中，Δ为高层参数或预定义参数； In some embodiments, the terminal device reports the starting position of the window of the frequency-domain basis vector M initial =mod(f 0 -Δ, N 3 ), where Δ is a high-level parameter or a predefined parameter;
所述终端设备上报频域基向量的窗口包括的频域基向量f∈mod(M initial+i，N 3)，i＝0,1,…,N-1，其中，mod()表示取模运算。 The frequency-domain basis vector f∈mod(M initial +i, N 3 ), i=0, 1, . operation.
在一些实施例中，若M＝1，秩等于1，最大非零系数个数为K0，秩大于1，所有层总的最大非零系数个数为
Figure PCTCN2021085408-appb-000048
In some embodiments, if M=1, the rank is equal to 1, the maximum number of non-zero coefficients is K0, and the rank is greater than 1, and the total maximum number of non-zero coefficients in all layers is
Figure PCTCN2021085408-appb-000048
若M>1，秩等于1，最大非零系数个数为
Figure PCTCN2021085408-appb-000049
秩大于1，所有层总的最大非零系数个数为
Figure PCTCN2021085408-appb-000050
If M>1, the rank is equal to 1, and the maximum number of non-zero coefficients is
Figure PCTCN2021085408-appb-000049
If the rank is greater than 1, the total maximum number of non-zero coefficients in all layers is
Figure PCTCN2021085408-appb-000050
其中，
Figure PCTCN2021085408-appb-000051
P CSI-RS为用于上报CSI的CSI-RS端口的总数量，其中，α≥1，β≥1，γ≥1。 in,
Figure PCTCN2021085408-appb-000051
P CSI-RS is the total number of CSI-RS ports used for reporting CSI, where α≥1, β≥1, and γ≥1.
在一些实施例中，所述α为高层参数或预定义参数，所述β为高层参数或预定义参数，所述γ为高层参数或预定义参数。In some embodiments, the α is a higher layer parameter or a predefined parameter, the β is a higher layer parameter or a predefined parameter, and the γ is a higher layer parameter or a predefined parameter.
在一些实施例中，所述通信单元310还用于：In some embodiments, the communication unit 310 is further configured to:
向所述网络设备上报所述PMI。reporting the PMI to the network device.
在一些实施例中，所述通信单元310还用于执行包括以下中的至少一项：In some embodiments, the communication unit 310 is further configured to perform at least one of the following:
上报所述M个频域基向量；reporting the M frequency domain basis vectors;
上报所述M个频域基向量对应的窗的起始位置；reporting the starting positions of the windows corresponding to the M frequency-domain basis vectors;
上报最强系数；report the strongest coefficient;
上报非零系数；report non-zero coefficients;
上报CQI。Report CQI.
在一些实施例中，所述M个频域基向量是从N个频域基向量中选择的，所述N个频域基向量f∈mod(S+i，N 3)，i＝0,1,…,N-1。 In some embodiments, the M frequency-domain basis vectors are selected from N frequency-domain basis vectors, the N frequency-domain basis vectors f ∈ mod(S+i, N 3 ), i=0, 1,…,N-1.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000052
比特上报每一层或所有层的频域基向量。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000052
The bit reports the frequency domain basis vector of each layer or all layers.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000053
比特上报频域基向量的窗的起始位置，其中，每层分别以
Figure PCTCN2021085408-appb-000054
比特上报，或者每层对应的频域基向量相同。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000053
Bit reports the starting position of the window of the frequency-domain basis vector, where each layer starts with
Figure PCTCN2021085408-appb-000054
bit reporting, or the corresponding frequency domain base vector of each layer is the same.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000055
或
Figure PCTCN2021085408-appb-000056
比特上报所述最强系数，其中， K 1，2L表示所述终端设备选择用于上报CSI的CSI-RS资源的CSI-RS端口数。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000055
or
Figure PCTCN2021085408-appb-000056
The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources of CSI.
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000057
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000057
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1，所述终端设备通过
Figure PCTCN2021085408-appb-000058
比特上报每一层的最强系数，其中，α为高层参数或预定义参数，
Figure PCTCN2021085408-appb-000059
P CSI-RS为用于上报CSI的CSI-RS端口的总数量。 If the rank is greater than 1, the terminal device passes the
Figure PCTCN2021085408-appb-000058
Bits report the strongest coefficient of each layer, where α is a high-level parameter or a predefined parameter,
Figure PCTCN2021085408-appb-000059
P CSI-RS is the total number of CSI-RS ports used for reporting CSI.
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000060
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000060
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1，所述终端设备通过
Figure PCTCN2021085408-appb-000061
比特上报每一层的最强系数，其中，
Figure PCTCN2021085408-appb-000062
If the rank is greater than 1, the terminal device passes the
Figure PCTCN2021085408-appb-000061
Bits report the strongest coefficient of each layer, where,
Figure PCTCN2021085408-appb-000062
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000063
比特上报所述最强系数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000063
bit reporting the strongest coefficient; or
若秩大于1，所述终端设备上报所述最强系数所在的层，并且通过
Figure PCTCN2021085408-appb-000064
或
Figure PCTCN2021085408-appb-000065
比特上报最强系数在所述层中的位置，其中，α为高层参数或预定义参数，
Figure PCTCN2021085408-appb-000066
If the rank is greater than 1, the terminal device reports the layer where the strongest coefficient is located, and passes the
Figure PCTCN2021085408-appb-000064
or
Figure PCTCN2021085408-appb-000065
The bit reports the position of the strongest coefficient in the layer, where α is a high-level parameter or a predefined parameter,
Figure PCTCN2021085408-appb-000066
在一些实施例中，若M大于1，对于所述终端设备用于上报CSI的每个CSI-RS端口，所述终端设备只上报一个非零系数。In some embodiments, if M is greater than 1, for each CSI-RS port used by the terminal device to report CSI, the terminal device only reports one non-zero coefficient.
在一些实施例中，所述通信单元310还用于：In some embodiments, the communication unit 310 is further configured to:
仅上报宽带CQI；或者，若M大于1，上报子带CQI。Only the broadband CQI is reported; or, if M is greater than 1, the subband CQI is reported.
在一些实施例中，所述处理单元320还用于：In some embodiments, the processing unit 320 is further configured to:
根据用于上报CSI的至少一个CSI-RS资源确定CQI。The CQI is determined according to at least one CSI-RS resource for reporting CSI.
在一些实施例中，所述处理单元320还用于：In some embodiments, the processing unit 320 is further configured to:
根据高层参数或预定义参数确定CQI子带大小。The CQI subband size is determined according to higher layer parameters or predefined parameters.
在一些实施例中，所述CQI子带大小根据上报带宽和第一参数确定，所述第一参数是高层参数或预定义参数。In some embodiments, the CQI subband size is determined according to the reporting bandwidth and a first parameter, where the first parameter is a higher layer parameter or a predefined parameter.
在一些实施例中，所述CQI子带大小根据标称子带大小和第二参数确定，所述第二参数是高层参数或预定义参数，其中，所述标称子带大小根据带宽部分BWP大小和高层参数子带大小确定。In some embodiments, the CQI subband size is determined based on a nominal subband size and a second parameter, the second parameter being a higher layer parameter or a predefined parameter, wherein the nominal subband size is based on the bandwidth part BWP The size and high layer parameters are determined by the subband size.
在一些实施例中，所述第一指示信息包括端口位置指示信息和/或频域位置指示信息。In some embodiments, the first indication information includes port location indication information and/or frequency domain location indication information.
在一些实施例中，所述端口位置指示信息用于指示用于上报CSI的CSI-RS资源的CSI-RS端口的位置。In some embodiments, the port position indication information is used to indicate the position of a CSI-RS port used for reporting CSI-RS resources of CSI.
在一些实施例中，所述频域位置指示信息用于指示最强系数的频域位置信息。In some embodiments, the frequency domain location indication information is used to indicate frequency domain location information of the strongest coefficients.
在一些实施例中，所述频域位置指示信息用于指示最强系数的频域位置相对于所述窗口位置S的偏移量f Δ，或者 In some embodiments, the frequency domain position indication information is used to indicate the offset f Δ of the frequency domain position of the strongest coefficient relative to the window position S, or
所述频域位置指示信息用于指示最强系数的绝对频域位置。The frequency domain position indication information is used to indicate the absolute frequency domain position of the strongest coefficient.
在一些实施例中，所述最强系数的绝对频域位置通过mod(S+f Δ，N3)确定，其中N3表示PMI子带个数，f Δ表示最强系数的频域位置相对于所述窗口位置S的偏移量。 In some embodiments, the absolute frequency domain position of the strongest coefficient is determined by mod(S+f Δ , N3), where N3 represents the number of PMI subbands, and f Δ represents the frequency domain position of the strongest coefficient relative to the The offset of the window position S.
在一些实施例中，每一层对应的最强系数的频域位置相对于所述窗口位置S的偏移量f Δ相同。 In some embodiments, the offset f Δ of the frequency domain position of the strongest coefficient corresponding to each layer relative to the window position S is the same.
在一些实施例中，所述最强系数的频域位置相对窗口位置S的偏移量f Δ根据窗口长度N确定，或者是由网络设备配置的，或者是预定义的。 In some embodiments, the offset fΔ of the frequency domain position of the strongest coefficient relative to the window position S is determined according to the window length N, or is configured by the network device, or is predefined.
在一些实施例中，所述端口位置指示信息的位宽可以为K 1比特或2L比特，或者为
Figure PCTCN2021085408-appb-000067
比特或
Figure PCTCN2021085408-appb-000068
比特。 In some embodiments, the bit width of the port location indication information may be K 1 bits or 2L bits, or
Figure PCTCN2021085408-appb-000067
bits or
Figure PCTCN2021085408-appb-000068
bits.
在一些实施例中，所述频域位置指示信息的位宽可以为N比特或
Figure PCTCN2021085408-appb-000069
比特，其中，N表示窗口长度。 In some embodiments, the bit width of the frequency domain location indication information may be N bits or
Figure PCTCN2021085408-appb-000069
bits, where N represents the window length.
在一些实施例中，所述终端设备上报第一指示信息，包括：In some embodiments, the terminal device reporting the first indication information includes:
若层数V大于1，所述终端设备上报V个端口位置指示信息和一个频域位置指示信息。If the number of layers V is greater than 1, the terminal device reports V port location indication information and one frequency domain location indication information.
在一些实施例中，所述S是网络设备配置的或预定义的。可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上***的输入输出接口。上述处理单元可以是一 个或多个处理器。In some embodiments, the S is configured or predefined by the network device. Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip. The aforementioned processing unit may be one or more processors.
应理解，根据本申请实施例的终端设备300可对应于本申请方法实施例中的终端设备，并且终端设备300中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中终端设备的相应流程，为了简洁，在此不再赘述。It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 300 are respectively for realizing the method shown in FIG. 2 . The corresponding process of the terminal device in 200 is not repeated here for brevity.
图4是根据本申请实施例的网络设备的示意性框图。图4的网络设备400包括：FIG. 4 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 400 of FIG. 4 includes:
通信单元410，用于向终端设备发送信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；A communication unit 410, configured to send a channel state information reference signal CSI-RS resource set to a terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1;
所述通信单元420还用于接收所述终端设备上报的信道状态信息CSI，其中，所述CSI根据所述CSI-RS资源集合和/或CSI相关参数确定，其中，所述CSI包括预编码矩阵指示PMI。The communication unit 420 is further configured to receive channel state information CSI reported by the terminal equipment, where the CSI is determined according to the CSI-RS resource set and/or CSI-related parameters, wherein the CSI includes a precoding matrix Indicates PMI.
在一些实施例中，所述CSI相关参数包括高层参数和/或预定义参数。In some embodiments, the CSI related parameters include higher layer parameters and/or predefined parameters.
在一些实施例中，所述Ks个CSI-RS资源的密度相同，所述Ks个CSI-RS资源的密度为0.25。In some embodiments, the density of the Ks CSI-RS resources is the same, and the density of the Ks CSI-RS resources is 0.25.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.25仅用于所述Ks个CSI-RS资源的总端口数为32。In some embodiments, the density of the Ks CSI-RS resources is 0.25 only for the total number of ports of the Ks CSI-RS resources to be 32.
在一些实施例中，所述Ks个CSI-RS资源为1/D个CSI-RS资源，其中，所述D为所述Ks个CSI-RS资源的密度。In some embodiments, the Ks CSI-RS resources are 1/D CSI-RS resources, where D is the density of the Ks CSI-RS resources.
在一些实施例中，所述D为高层参数，或者，所述D为预定义参数。In some embodiments, the D is a high-level parameter, or the D is a predefined parameter.
在一些实施例中，所述Ks个CSI-RS资源的资源块偏移不同。In some embodiments, the resource block offsets of the Ks CSI-RS resources are different.
在一些实施例中，所述Ks个CSI-RS资源的密度为0.5，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1；或者In some embodiments, the density of the Ks CSI-RS resources is 0.5, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the second CSI-RS resource The resource block offset is 1; or
所述Ks个CSI-RS资源的密度为0.25，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1，第三个CSI-RS资源的资源块偏移为2，第四个CSI-RS资源的资源块偏移为3。The density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is 1. The resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
在一些实施例中，所述每个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述Ks个CSI-RS资源包括2个密度为0.5的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。In some embodiments, the number of CSI-RS ports included in each CSI-RS resource is a first value, the first value is 16 and/or 8, and the Ks CSI-RS resources include 2 densities A CSI-RS resource of 0.5 is only used for the total number of ports of the Ks CSI-RS resources is a second value, and the second value is 32 and/or 16.
在一些实施例中，所述每个CSI-RS资源包括的CSI-RS端口数为8，所述Ks个CSI-RS资源包括4个密度为0.25的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为32。In some embodiments, the number of CSI-RS ports included in each CSI-RS resource is 8, and the Ks CSI-RS resources include 4 CSI-RS resources with a density of 0.25 only for the Ks CSI-RS resources The total number of ports for CSI-RS resources is 32.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不超过第一阈值。In some embodiments, the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数相同。In some embodiments, all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
在一些实施例中，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不同。In some embodiments, all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports.
在一些实施例中，所述CSI-RS资源集合包括的CSI-RS资源的数量Ks由所述终端设备的能力确定，和/或In some embodiments, the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device, and/or
所述Ks个CSI-RS资源的密度为0.25由所述终端设备的能力确定。The density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
在一些实施例中，所述通信单元410还用于：In some embodiments, the communication unit 410 is further configured to:
接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述用于上报CSI的目标CSI-RS资源。Receive first indication information sent by the terminal device, where the first indication information is used to indicate the target CSI-RS resource for reporting CSI.
在一些实施例中，所述目标CSI-RS资源包括的CSI-RS资源的数量为一个，所述第一指示信息包括CSI-RS资源指示CRI，所述CRI用于指示所述一个目标CSI-RS资源；或者In some embodiments, the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indication CRI, where the CRI is used to indicate the one target CSI-RS resource. RS resources; or
所述目标CSI-RS资源包括多个CSI-RS资源，所述第一指示信息通过比特位图或组合方式指示所述多个CSI-RS资源。The target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
在一些实施例中，所述第一指示信息包括Ks个比特，或者，
Figure PCTCN2021085408-appb-000070
个比特，其中，所述K为所述多个CSI-RS资源的数量，
Figure PCTCN2021085408-appb-000071
表示向上取整。 In some embodiments, the first indication information includes Ks bits, or,
Figure PCTCN2021085408-appb-000070
bits, where the K is the number of the multiple CSI-RS resources,
Figure PCTCN2021085408-appb-000071
Indicates rounded up.
在一些实施例中，所述K为高层参数或者预定义参数，或者，所述K根据所述Ks确定。In some embodiments, the K is a high-level parameter or a predefined parameter, or the K is determined according to the Ks.
在一些实施例中，所述K根据所述Ks和第一系数确定，该第一系数为高层参数或者预定义参数。In some embodiments, the K is determined according to the Ks and a first coefficient, where the first coefficient is a high-level parameter or a predefined parameter.
在一些实施例中，所述目标CSI-RS资源包括多个CSI-RS资源，对于所述多个CSI-RS资源中的每个CSI-RS资源，所述PMI的端口序号从所述每个CSI-RS资源的第一个CSI-RS端口到所述每个CSI-RS资源的最后一个CSI-RS端口依次映射。In some embodiments, the target CSI-RS resource includes a plurality of CSI-RS resources, and for each CSI-RS resource in the plurality of CSI-RS resources, the port sequence number of the PMI starts from the each CSI-RS resource. The first CSI-RS port of the CSI-RS resource is sequentially mapped to the last CSI-RS port of each CSI-RS resource.
在一些实施例中，所述Ks个CSI-RS资源为1个CSI-RS资源，所述一个CSI-RS资源包括多个CSI-RS端口组。In some embodiments, the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
在一些实施例中，所述多个CSI-RS端口组的密度相同，并且所述多个CSI-RS端口组的密度为 0.25。In some embodiments, the densities of the plurality of CSI-RS port groups are the same, and the densities of the plurality of CSI-RS port groups are 0.25.
在一些实施例中，所述多个CSI-RS端口组的密度为0.25仅用于所述一个CSI-RS资源的总端口数为32。In some embodiments, the density of the plurality of CSI-RS port groups is 0.25 and only the total number of ports used for the one CSI-RS resource is 32.
在一些实施例中，所述一个CSI-RS资源包括1/P个CSI-RS端口组，其中，所述P为所述多个CSI-RS端口组的密度。In some embodiments, the one CSI-RS resource includes 1/P CSI-RS port groups, where P is the density of the plurality of CSI-RS port groups.
在一些实施例中，所述P为高层参数，或者，所述P为预定义参数。In some embodiments, the P is a high-level parameter, or the P is a predefined parameter.
在一些实施例中，所述多个CSI-RS端口组的资源块偏移不同。In some embodiments, the resource block offsets of the plurality of CSI-RS port groups are different.
在一些实施例中，所述多个CSI-RS端口组的密度为0.5，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1；或者In some embodiments, the density of the plurality of CSI-RS port groups is 0.5, the resource block offset of the first CSI-RS port group of the plurality of CSI-RS port groups is zero, and the second CSI-RS port group has zero offset. - the resource block offset of the RS port group is 1; or
所述多个CSI-RS端口组的密度为0.25，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1，第三个CSI-RS端口组的资源块偏移为2，第四个CSI-RS端口组的资源块偏移为3。The density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the resources of the second CSI-RS port group The block offset is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述一个CSI-RS资源包括2个密度为0.5的CSI-RS端口组仅用于所述一个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。In some embodiments, the number of CSI-RS ports included in the one CSI-RS resource is a first value, the first value is 16 and/or 8, and the one CSI-RS resource includes 2 ports with a density of 0.5 The total number of ports of the CSI-RS port group used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口数为8，所述一个CSI-RS资源包括4个密度为0.25的CSI-RS端口数仅用于所述一个CSI-RS资源的总端口数为32。In some embodiments, the number of CSI-RS ports included in the one CSI-RS resource is 8, and the number of CSI-RS ports included in the one CSI-RS resource with a density of 0.25 is only used for the one CSI-RS The total number of ports for RS resources is 32.
在一些实施例中，所述一个CSI-RS资源的总的CSI-RS端口数不超过第二阈值。In some embodiments, the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
在一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数相同。In some embodiments, each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports.
在一些实施例中，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数不同。In some embodiments, each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports.
在一些实施例中，所述一个CSI-RS资源包括的CSI-RS端口组的数量由所述终端设备的能力确定，和/或In some embodiments, the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device, and/or
所述多个CSI-RS端口组的密度为0.25由所述终端设备的能力确定。36、根据权利要求23-35中任一项所述的方法，其特征在于，所述CSI-RS端口组为一个或多个码分复用CDM组。The density of the plurality of CSI-RS port groups of 0.25 is determined by the capability of the terminal device. 36. The method according to any one of claims 23-35, wherein the CSI-RS port group is one or more code division multiplexing CDM groups.
在一些实施例中，若所述多个CSI-RS端口组的总端口数为32，所述一个CSI-RS资源包括4个CDM组。In some embodiments, if the total number of ports in the multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM groups.
在一些实施例中，若所述多个CSI-RS端口组的密度为0.25，所述4个CDM组中的每个CDM组对应一个资源块偏移；或者In some embodiments, if the density of the plurality of CSI-RS port groups is 0.25, each of the four CDM groups corresponds to a resource block offset; or
若所述多个CSI-RS端口组的密度为0.5，所述4个CDM组中的两个CDM组对应一个资源块偏移。If the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
在一些实施例中，所述通信单元410还用于：In some embodiments, the communication unit 410 is further configured to:
接收终端设备上报的PMI。Receive the PMI reported by the terminal device.
在一些实施例中，所述通信单元410还用于执行包括以下中的至少一项：In some embodiments, the communication unit 410 is further configured to perform at least one of the following:
接收所述终端设备上报的M个频域基向量；receiving M frequency domain base vectors reported by the terminal device;
接收所述终端设备上报的所述M个频域基向量对应的窗的起始位置；receiving the starting positions of the windows corresponding to the M frequency-domain basis vectors reported by the terminal device;
接收所述终端设备上报的最强系数；receiving the strongest coefficient reported by the terminal device;
接收所述终端设备上报的非零系数；receiving a non-zero coefficient reported by the terminal device;
接收所述终端设备上报的CQI。Receive the CQI reported by the terminal device.
在一些实施例中，所述M个频域基向量是从N个频域基向量中选择的，所述N个频域基向量f∈mod(S+i，N 3)，i＝0,1,…,N-1。 In some embodiments, the M frequency-domain basis vectors are selected from N frequency-domain basis vectors, the N frequency-domain basis vectors f ∈ mod(S+i, N 3 ), i=0, 1,…,N-1.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000072
比特上报每一层或所有层的频域基向量。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000072
The bit reports the frequency domain basis vector of each layer or all layers.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000073
比特上报频域基向量的窗的起始位置，其中，每层分别以
Figure PCTCN2021085408-appb-000074
比特上报，或者每层对应的频域基向量相同。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000073
Bit reports the starting position of the window of the frequency-domain basis vector, where each layer starts with
Figure PCTCN2021085408-appb-000074
bit reporting, or the corresponding frequency domain base vector of each layer is the same.
在一些实施例中，所述终端设备通过
Figure PCTCN2021085408-appb-000075
或
Figure PCTCN2021085408-appb-000076
比特上报所述最强系数，其中，K 1，2L表示所述终端设备选择用于上报CSI的CSI-RS资源的CSI-RS端口数。 In some embodiments, the terminal device is
Figure PCTCN2021085408-appb-000075
or
Figure PCTCN2021085408-appb-000076
The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000077
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000077
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1，所述终端设备通过
Figure PCTCN2021085408-appb-000078
比特上报每一层的最强系数，其中，α为高层参 数或预定义参数，
Figure PCTCN2021085408-appb-000079
P CSI-RS为用于上报CSI的CSI-RS端口的总数量。 If the rank is greater than 1, the terminal device passes the
Figure PCTCN2021085408-appb-000078
Bits report the strongest coefficient of each layer, where α is a high-level parameter or a predefined parameter,
Figure PCTCN2021085408-appb-000079
P CSI-RS is the total number of CSI-RS ports used for reporting CSI.
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000080
比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000080
bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
若秩大于1，所述终端设备通过
Figure PCTCN2021085408-appb-000081
比特上报每一层的最强系数，其中，
Figure PCTCN2021085408-appb-000082
If the rank is greater than 1, the terminal device passes the
Figure PCTCN2021085408-appb-000081
Bits report the strongest coefficient of each layer, where,
Figure PCTCN2021085408-appb-000082
在一些实施例中，若秩等于1，所述终端设备通过
Figure PCTCN2021085408-appb-000083
比特上报所述最强系数；或者 In some embodiments, if the rank is equal to 1, the terminal device passes
Figure PCTCN2021085408-appb-000083
bit reporting the strongest coefficient; or
若秩大于1，所述终端设备上报所述最强系数所在的层，并且通过
Figure PCTCN2021085408-appb-000084
或
Figure PCTCN2021085408-appb-000085
比特上报最强系数在所述层中的位置，其中，α为高层参数或预定义参数，
Figure PCTCN2021085408-appb-000086
If the rank is greater than 1, the terminal device reports the layer where the strongest coefficient is located, and passes the
Figure PCTCN2021085408-appb-000084
or
Figure PCTCN2021085408-appb-000085
The bit reports the position of the strongest coefficient in the layer, where α is a high-level parameter or a predefined parameter,
Figure PCTCN2021085408-appb-000086
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上***的输入输出接口。上述处理单元可以是一个或多个处理器。Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip. The aforementioned processing unit may be one or more processors.
应理解，根据本申请实施例的网络设备400可对应于本申请方法实施例中的网络设备，并且网络设备400中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中网络设备的相应流程，为了简洁，在此不再赘述。It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 400 are respectively for realizing the method shown in FIG. 2 . The corresponding process of the network device in 200 is not repeated here for brevity.
图5是本申请实施例提供的一种通信设备500示意性结构图。图5所示的通信设备500包括处理器510，处理器510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。FIG. 5 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device 500 shown in FIG. 5 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
可选地，如图5所示，通信设备500还可以包括存储器520。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。Optionally, as shown in FIG. 5 , the communication device 500 may further include a memory 520 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.
其中，存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .
可选地，如图5所示，通信设备500还可以包括收发器530，处理器510可以控制该收发器530与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。Optionally, as shown in FIG. 5 , the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by the device.
其中，收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线，天线的数量可以为一个或多个。Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, and the number of the antennas may be one or more.
可选地，该通信设备500具体可为本申请实施例的网络设备，并且该通信设备500可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the communication device 500 may specifically be a network device in this embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .
可选地，该通信设备500具体可为本申请实施例的移动终端/终端设备，并且该通信设备500可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the communication device 500 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and will not be repeated here.
图6是本申请实施例的芯片的示意性结构图。图6所示的芯片600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。FIG. 6 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.
可选地，如图6所示，芯片600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。Optionally, as shown in FIG. 6 , the chip 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
可选地，该芯片600还可以包括输入接口630。其中，处理器610可以控制该输入接口630与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。Optionally, the chip 600 may further include an input interface 630 . The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
可选地，该芯片600还可以包括输出接口640。其中，处理器610可以控制该输出接口640与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。Optionally, the chip 600 may further include an output interface 640 . The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
可选地，该芯片可应用于本申请实施例中的移动终端/终端设备，并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. For brevity, here No longer.
应理解，本申请实施例提到的芯片还可以称为***级芯片，***芯片，芯片***或片上***芯片等。It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
图7是本申请实施例提供的一种通信***700的示意性框图。如图7所示，该通信***700包括终端设备710和网络设备720。FIG. 7 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 7 , the communication system 700 includes a terminal device 710 and a network device 720 .
其中，该终端设备710可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备720可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。The terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施 例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. 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.
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的***和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), 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 link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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 connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , for brevity, will not be repeated here.
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。Embodiments of the present application also provide a computer program product, including computer program instructions.
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.
本申请实施例还提供了一种计算机程序。The embodiments of the present application also provide a computer program.
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.
在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: 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 codes .
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (86)

  1. 一种码本上报的方法，其特征在于，包括：A method for codebook reporting, comprising:
    终端设备接收网络设备发送的信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；The terminal device receives the channel state information reference signal CSI-RS resource set sent by the network device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port, wherein , Ks is an integer greater than or equal to 1;
    所述终端设备根据所述CSI-RS资源集合和/或CSI相关参数，确定信道状态信息CSI，其中，所述CSI包括预编码矩阵指示PMI；The terminal device determines channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
    所述终端设备向所述网络设备上报所述CSI。The terminal device reports the CSI to the network device.
  2. 根据权利要求1所述的方法，其特征在于，所述CSI相关参数包括高层参数和/或预定义参数。The method according to claim 1, wherein the CSI related parameters include high layer parameters and/or predefined parameters.
  3. 根据权利要求1或2所述的方法，其特征在于，所述Ks个CSI-RS资源的密度相同，所述Ks个CSI-RS资源的密度为0.25。The method according to claim 1 or 2, wherein the density of the Ks CSI-RS resources is the same, and the density of the Ks CSI-RS resources is 0.25.
  4. 根据权利要求3所述的方法，其特征在于，所述Ks个CSI-RS资源的密度为0.25仅用于所述Ks个CSI-RS资源的总端口数为32。The method according to claim 3, wherein the density of the Ks CSI-RS resources is 0.25, and only the total number of ports used for the Ks CSI-RS resources is 32.
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述Ks个CSI-RS资源为1/D个CSI-RS资源，其中，所述D为所述Ks个CSI-RS资源的密度。The method according to any one of claims 1-4, wherein the Ks CSI-RS resources are 1/D CSI-RS resources, wherein the D is the Ks CSI-RS resources resource density.
  6. 根据权利要求5所述的方法，其特征在于，所述D为高层参数，或者，所述D为预定义参数。The method according to claim 5, wherein the D is a high-level parameter, or the D is a predefined parameter.
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述Ks个CSI-RS资源的资源块偏移不同。The method according to any one of claims 1-6, wherein resource block offsets of the Ks CSI-RS resources are different.
  8. 根据权利要求7所述的方法，其特征在于，所述Ks个CSI-RS资源的密度为0.5，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1；或者The method according to claim 7, wherein the density of the Ks CSI-RS resources is 0.5, and the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, The resource block offset of the second CSI-RS resource is 1; or
    所述Ks个CSI-RS资源的密度为0.25，所述Ks个CSI-RS资源的第一个CSI-RS资源的资源块偏移为零，第二个CSI-RS资源的资源块偏移为1，第三个CSI-RS资源的资源块偏移为2，第四个CSI-RS资源的资源块偏移为3。The density of the Ks CSI-RS resources is 0.25, the resource block offset of the first CSI-RS resource of the Ks CSI-RS resources is zero, and the resource block offset of the second CSI-RS resource is 1. The resource block offset of the third CSI-RS resource is 2, and the resource block offset of the fourth CSI-RS resource is 3.
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述每个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述Ks个CSI-RS资源包括2个密度为0.5的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。The method according to any one of claims 1-8, wherein the number of CSI-RS ports included in each CSI-RS resource is a first value, and the first value is 16 and/or 8 , the Ks CSI-RS resources include 2 CSI-RS resources with a density of 0.5. The total number of ports only used for the Ks CSI-RS resources is a second value, and the second value is 32 and/or 16.
  10. 根据权利要求1-8中任一项所述的方法，其特征在于，所述每个CSI-RS资源包括的CSI-RS端口数为8，所述Ks个CSI-RS资源包括4个密度为0.25的CSI-RS资源仅用于所述Ks个CSI-RS资源的总端口数为32。The method according to any one of claims 1-8, wherein the number of CSI-RS ports included in each CSI-RS resource is 8, and the Ks CSI-RS resources include 4 ports with a density of The CSI-RS resource of 0.25 is only used for the total number of ports of the Ks CSI-RS resources is 32.
  11. 根据权利要求1-8中任一项所述的方法，其特征在于，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不超过第一阈值。The method according to any one of claims 1-8, wherein the number of CSI-RS ports of all CSI-RS resources in the CSI-RS resource set does not exceed a first threshold.
  12. 根据权利要求1-11中任一项所述的方法，其特征在于，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数相同。The method according to any one of claims 1-11, wherein all CSI-RS resources in the CSI-RS resource set have the same number of CSI-RS ports.
  13. 根据权利要求1-11中任一项所述的方法，其特征在于，所述CSI-RS资源集合中的所有CSI-RS资源的CSI-RS端口数不同。The method according to any one of claims 1-11, wherein all CSI-RS resources in the CSI-RS resource set have different numbers of CSI-RS ports.
  14. 根据权利要求1-13中任一项所述的方法，其特征在于，所述CSI-RS资源集合包括的CSI-RS资源的数量Ks由所述终端设备的能力确定，和/或The method according to any one of claims 1-13, wherein the number Ks of CSI-RS resources included in the CSI-RS resource set is determined by the capability of the terminal device, and/or
    所述Ks个CSI-RS资源的密度为0.25由所述终端设备的能力确定。The density of the Ks CSI-RS resources is 0.25, which is determined by the capability of the terminal device.
  15. 根据权利要求1-14中任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 1-14, wherein the method further comprises:
    所述终端设备在所述Ks个CSI-RS资源中确定目标CSI-RS资源，所述目标CSI-RS资源用于上报所述CSI。The terminal device determines a target CSI-RS resource among the Ks CSI-RS resources, where the target CSI-RS resource is used to report the CSI.
  16. 根据权利要求15所述的方法，其特征在于，所述方法还包括：The method of claim 15, wherein the method further comprises:
    所述终端设备向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述目标CSI-RS资源。The terminal device sends first indication information to the network device, where the first indication information is used to indicate the target CSI-RS resource.
  17. 根据权利要求16所述的方法，其特征在于，所述目标CSI-RS资源包括的CSI-RS资源的数量为一个，所述第一指示信息包括CSI-RS资源指示CRI，所述CRI用于指示所述一个目标CSI-RS资源；或者The method according to claim 16, wherein the number of CSI-RS resources included in the target CSI-RS resource is one, and the first indication information includes a CSI-RS resource indication CRI, and the CRI is used for indicating the one target CSI-RS resource; or
    所述目标CSI-RS资源包括多个CSI-RS资源，所述第一指示信息通过比特位图或组合方式指示所述多个CSI-RS资源。The target CSI-RS resource includes multiple CSI-RS resources, and the first indication information indicates the multiple CSI-RS resources through a bitmap or a combination manner.
  18. 根据权利要求17所述的方法，其特征在于，所述第一指示信息包括Ks个比特，或者，
    Figure PCTCN2021085408-appb-100001
    个比特，其中，所述K为所述多个CSI-RS资源的数量，
    Figure PCTCN2021085408-appb-100002
    表示向上取整。     The method according to claim 17, wherein the first indication information comprises Ks bits, or,
    Figure PCTCN2021085408-appb-100001
    bits, where the K is the number of the multiple CSI-RS resources,
    Figure PCTCN2021085408-appb-100002
    Indicates rounded up.
  19. 根据权利要求18所述的方法，其特征在于，所述K为高层参数或者预定义参数，或者，所 述K根据所述Ks确定。The method according to claim 18, wherein the K is a high-level parameter or a predefined parameter, or the K is determined according to the Ks.
  20. 根据权利要求19所述的方法，其特征在于，所述K根据所述Ks和第一系数确定，所述第一系数为高层参数或者预定义参数。The method according to claim 19, wherein the K is determined according to the Ks and a first coefficient, and the first coefficient is a high-level parameter or a predefined parameter.
  21. 根据权利要求15-21中任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 15-21, wherein the method further comprises:
    在所述目标CSI-RS资源包括所述Ks个CSI-RS资源的情况下，所述终端设备不向所述网络设备发送CRI。In the case that the target CSI-RS resource includes the Ks CSI-RS resources, the terminal device does not send the CRI to the network device.
  22. 根据权利要求1-21中任一项所述的方法，其特征在于，所述目标CSI-RS资源包括多个CSI-RS资源，所述方法还包括：The method according to any one of claims 1-21, wherein the target CSI-RS resource includes multiple CSI-RS resources, and the method further comprises:
    对于所述多个CSI-RS资源中的每个CSI-RS资源，将PMI的端口序号从所述每个CSI-RS资源的第一个CSI-RS端口到所述每个CSI-RS资源的最后一个CSI-RS端口依次映射。For each CSI-RS resource in the plurality of CSI-RS resources, set the port sequence number of the PMI from the first CSI-RS port of each CSI-RS resource to the port number of each CSI-RS resource The last CSI-RS port is mapped sequentially.
  23. 根据权利要求1或2所述的方法，其特征在于，所述Ks个CSI-RS资源为1个CSI-RS资源，所述一个CSI-RS资源包括多个CSI-RS端口组。The method according to claim 1 or 2, wherein the Ks CSI-RS resources are one CSI-RS resource, and the one CSI-RS resource includes multiple CSI-RS port groups.
  24. 根据权利要求23所述的方法，其特征在于，所述多个CSI-RS端口组的密度相同，并且所述多个CSI-RS端口组的密度为0.25。The method according to claim 23, wherein the densities of the multiple CSI-RS port groups are the same, and the density of the multiple CSI-RS port groups is 0.25.
  25. 根据权利要求24所述的方法，其特征在于，所述多个CSI-RS端口组的密度为0.25仅用于所述一个CSI-RS资源的总端口数为32。The method according to claim 24, wherein the density of the plurality of CSI-RS port groups is 0.25, and the total number of ports only used for the one CSI-RS resource is 32.
  26. 根据权利要求23-25中任一项所述的方法，其特征在于，所述一个CSI-RS资源包括1/P个CSI-RS端口组，其中，所述P为所述多个CSI-RS端口组的密度。The method according to any one of claims 23-25, wherein the one CSI-RS resource includes 1/P CSI-RS port groups, wherein the P is the multiple CSI-RSs The density of the port group.
  27. 根据权利要求26所述的方法，其特征在于，所述P为高层参数，或者，所述P为预定义参数。The method according to claim 26, wherein the P is a high-level parameter, or the P is a predefined parameter.
  28. 根据权利要求23-27中任一项所述的方法，其特征在于，所述多个CSI-RS端口组的资源块偏移不同。The method according to any one of claims 23-27, wherein resource block offsets of the multiple CSI-RS port groups are different.
  29. 根据权利要求28所述的方法，其特征在于，所述多个CSI-RS端口组的密度为0.5，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1；或者The method according to claim 28, wherein the density of the multiple CSI-RS port groups is 0.5, and the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups zero, the resource block offset of the second CSI-RS port group is 1; or
    所述多个CSI-RS端口组的密度为0.25，所述多个CSI-RS端口组的第一个CSI-RS端口组的资源块偏移为零，第二个CSI-RS端口组的资源块偏移为1，第三个CSI-RS端口组的资源块偏移为2，第四个CSI-RS端口组的资源块偏移为3。The density of the multiple CSI-RS port groups is 0.25, the resource block offset of the first CSI-RS port group of the multiple CSI-RS port groups is zero, and the resources of the second CSI-RS port group The block offset is 1, the resource block offset of the third CSI-RS port group is 2, and the resource block offset of the fourth CSI-RS port group is 3.
  30. 根据权利要求23-29中任一项所述的方法，其特征在于，所述一个CSI-RS资源包括的CSI-RS端口数为第一值，所述第一值为16和/或8，所述一个CSI-RS资源包括2个密度为0.5的CSI-RS端口组仅用于所述一个CSI-RS资源的总端口数为第二值，所述第二值为32和/或16。The method according to any one of claims 23-29, wherein the number of CSI-RS ports included in the one CSI-RS resource is a first value, and the first value is 16 and/or 8, The one CSI-RS resource includes two CSI-RS port groups with a density of 0.5, and the total number of ports used only for the one CSI-RS resource is a second value, and the second value is 32 and/or 16.
  31. 根据权利要求23-29中任一项所述的方法，其特征在于，所述一个CSI-RS资源包括的CSI-RS端口数为8，所述一个CSI-RS资源包括4个密度为0.25的CSI-RS端口数仅用于所述一个CSI-RS资源的总端口数为32。The method according to any one of claims 23-29, wherein the number of CSI-RS ports included in the one CSI-RS resource is 8, and the one CSI-RS resource includes 4 ports with a density of 0.25 The number of CSI-RS ports is only used for the total number of ports of the one CSI-RS resource is 32.
  32. 根据权利要求23-31中任一项所述的方法，其特征在于，所述一个CSI-RS资源的总的CSI-RS端口数不超过第二阈值。The method according to any one of claims 23-31, wherein the total number of CSI-RS ports of the one CSI-RS resource does not exceed the second threshold.
  33. 根据权利要求23-32中任一项所述的方法，其特征在于，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数相同。The method according to any one of claims 23-32, wherein each CSI-RS port group in the multiple CSI-RS port groups includes the same number of CSI-RS ports.
  34. 根据权利要求23-32中任一项所述的方法，其特征在于，所述多个CSI-RS端口组中的每个CSI-RS端口组包括的CSI-RS端口数不同。The method according to any one of claims 23-32, wherein each CSI-RS port group in the multiple CSI-RS port groups includes a different number of CSI-RS ports.
  35. 根据权利要求23-34中任一项所述的方法，其特征在于，所述一个CSI-RS资源包括的CSI-RS端口组的数量由所述终端设备的能力确定，和/或The method according to any one of claims 23-34, wherein the number of CSI-RS port groups included in the one CSI-RS resource is determined by the capability of the terminal device, and/or
    所述多个CSI-RS端口组的密度为0.25由所述终端设备的能力确定。The density of the plurality of CSI-RS port groups of 0.25 is determined by the capability of the terminal device.
  36. 根据权利要求23-35中任一项所述的方法，其特征在于，所述CSI-RS端口组为一个或多个码分复用CDM组。The method according to any one of claims 23-35, wherein the CSI-RS port group is one or more code division multiplexing CDM groups.
  37. 根据权利要求23-36中任一项所述的方法，其特征在于，若所述多个CSI-RS端口组的总端口数为32，所述一个CSI-RS资源包括4个CDM组。The method according to any one of claims 23-36, wherein if the total number of ports in the multiple CSI-RS port groups is 32, the one CSI-RS resource includes 4 CDM groups.
  38. 根据权利要求37所述的方法，其特征在于，若所述多个CSI-RS端口组的密度为0.25，所述4个CDM组中的每个CDM组对应一个资源块偏移；或者The method according to claim 37, wherein if the density of the multiple CSI-RS port groups is 0.25, each of the four CDM groups corresponds to a resource block offset; or
    若所述多个CSI-RS端口组的密度为0.5，所述4个CDM组中的两个CDM组对应一个资源块偏移。If the density of the multiple CSI-RS port groups is 0.5, two CDM groups in the four CDM groups correspond to one resource block offset.
  39. 根据权利要求1-38中任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 1-38, wherein the method further comprises:
    所述终端设备根据高层参数和/或预定义参数确定以下信息中的至少一个：The terminal device determines at least one of the following information according to high-level parameters and/or predefined parameters:
    所述终端设备上报的频域基向量的数量M，其中，所述M为大于1的整数；The number M of frequency-domain basis vectors reported by the terminal device, where M is an integer greater than 1;
    每个信道质量指示CQI子带的PMI子带数量R；The number R of PMI subbands for each channel quality indication CQI subband;
    所述终端设备测量CSI-RS和/或上报频域基向量的窗口位置S和长度N；The terminal equipment measures the CSI-RS and/or reports the window position S and length N of the frequency domain base vector;
    所述终端设备上报最强系数的位置f 0； the terminal equipment reports the position f 0 of the strongest coefficient;
    所述终端设备上报的最大非零系数个数。The maximum number of non-zero coefficients reported by the terminal device.
  40. 根据权利要求39所述的方法，其特征在于，所述M为素数。The method of claim 39, wherein the M is a prime number.
  41. 根据权利要求39或40所述的方法，其特征在于，所述R为以下集合中一个值：{1,2,4}，{1,2,4,8}。The method according to claim 39 or 40, wherein the R is a value in the following set: {1, 2, 4}, {1, 2, 4, 8}.
  42. 根据权利要求41所述的方法，其特征在于，当且仅当M>1时，所述R为{1,2,4,8}中一个值。The method of claim 41, wherein the R is one of {1, 2, 4, 8} if and only if M>1.
  43. 根据权利要求39-42中任一项所述的方法，其特征在于，所述S为零；或者The method of any one of claims 39-42, wherein the S is zero; or
    所述S＝i×N 3/a，其中，i＝0,1,…,a-1中的一个，其中，所述a为高层参数或预定义参数，所述N 3为PMI子带个数。 The S =i×N 3 /a, where i=one of 0, 1, . number.
  44. 根据权利要求39-43中任一项所述的方法，其特征在于，所述N为素数。The method according to any one of claims 39-43, wherein the N is a prime number.
  45. 根据权利要求39-44中任一项所述的方法，其特征在于，所述f 0为零；或者 The method of any one of claims 39-44, wherein the f 0 is zero; or
    所述f 0＝i×N 3/b，其中，i＝0,1,…,b-1中的一个，其中，所述b为高层参数或预定义参数，所述N 3为PMI子带个数。 The f 0 =i×N 3 /b, where i=one of 0,1,...,b-1, where the b is a high-level parameter or a predefined parameter, and the N 3 is a PMI subband number.
  46. 根据权利要求39-45中任一项所述的方法，其特征在于，所述终端设备上报频域基向量的窗口的起始位置M initial＝mod(f 0-Δ,N 3)，其中，Δ为高层参数或预定义参数； The method according to any one of claims 39-45, wherein the terminal device reports the starting position of the window of the frequency-domain basis vector M initial =mod(f 0 -Δ,N 3 ), wherein, Δ is a high-level parameter or a predefined parameter;
    所述终端设备上报频域基向量的窗口包括的频域基向量f∈mod(M initial+i，N 3)，i＝0,1,…,N-1，其中，mod( )表示取模运算。 The frequency-domain basis vector f∈mod(M initial +i, N 3 ), i=0, 1, . operation.
  47. 根据权利要求39-46中任一项所述的方法，其特征在于，若M＝1，秩等于1，最大非零系数个数为K0，秩大于1，所有层总的最大非零系数个数为
    Figure PCTCN2021085408-appb-100003
    The method according to any one of claims 39-46, wherein if M=1, the rank is equal to 1, the maximum number of non-zero coefficients is K0, the rank is greater than 1, and the total maximum number of non-zero coefficients of all layers is number is
    Figure PCTCN2021085408-appb-100003
    若M>1，秩等于1，最大非零系数个数为
    Figure PCTCN2021085408-appb-100004
    秩大于1，所有层总的最大非零系数个数为
    Figure PCTCN2021085408-appb-100005
    If M>1, the rank is equal to 1, and the maximum number of non-zero coefficients is
    Figure PCTCN2021085408-appb-100004
    If the rank is greater than 1, the total maximum number of non-zero coefficients in all layers is
    Figure PCTCN2021085408-appb-100005
    其中，
    Figure PCTCN2021085408-appb-100006
    P CSI-RS为用于上报CSI的CSI-RS端口的总数量，其中，α≥1，β≥1，γ≥1。     in,
    Figure PCTCN2021085408-appb-100006
    P CSI-RS is the total number of CSI-RS ports used for reporting CSI, where α≥1, β≥1, and γ≥1.
  48. 根据权利要求47所述的方法，其特征在于，所述α为高层参数或预定义参数，所述β为高层参数或预定义参数，所述γ为高层参数或预定义参数。The method according to claim 47, wherein the α is a high-level parameter or a predefined parameter, the β is a high-level parameter or a predefined parameter, and the γ is a high-level parameter or a predefined parameter.
  49. 根据权利要求39-48中任一项所述的方法，其特征在于，所述终端设备向所述网络设备上报所述CSI，包括：The method according to any one of claims 39-48, wherein the terminal device reporting the CSI to the network device comprises:
    所述终端设备向所述网络设备上报所述PMI。The terminal device reports the PMI to the network device.
  50. 根据权利要求49所述的方法，其特征在于，所述终端设备向所述网络设备上报PMI，包括以下中的至少一项：The method according to claim 49, wherein the terminal device reports a PMI to the network device, comprising at least one of the following:
    所述终端设备上报所述M个频域基向量；reporting, by the terminal device, the M frequency domain base vectors;
    所述终端设备上报所述M个频域基向量对应的窗的起始位置；reporting, by the terminal device, the starting positions of the windows corresponding to the M frequency-domain basis vectors;
    所述终端设备上报最强系数；The terminal device reports the strongest coefficient;
    所述终端设备上报非零系数；the terminal device reports a non-zero coefficient;
    所述终端设备上报CQI；the terminal equipment reports the CQI;
    所述终端设备上报第一指示信息，所述第一指示信息用于确定最强系数。The terminal device reports first indication information, where the first indication information is used to determine the strongest coefficient.
  51. 根据权利要求50所述的方法，其特征在于，所述M个频域基向量是从N个频域基向量中选择的，所述N个频域基向量f∈mod(S+i，N 3)，i＝0,1,…,N-1。 The method according to claim 50, wherein the M frequency-domain basis vectors are selected from N frequency-domain basis vectors, and the N frequency-domain basis vectors f∈mod(S+i,N 3 ), i=0,1,...,N-1.
  52. 根据权利要求51所述的方法，其特征在于，所述终端设备通过
    Figure PCTCN2021085408-appb-100007
    比特上报每一层或所有层的频域基向量。     The method according to claim 51, wherein the terminal device passes the
    Figure PCTCN2021085408-appb-100007
    The bit reports the frequency domain basis vector of each layer or all layers.
  53. 根据权利要求50-52中任一项所述的方法，其特征在于，所述终端设备通过
    Figure PCTCN2021085408-appb-100008
    比特上报频域基向量的窗的起始位置，其中，每层分别以
    Figure PCTCN2021085408-appb-100009
    比特上报，或者每层对应的频域基向量相同。     The method according to any one of claims 50-52, wherein the terminal equipment
    Figure PCTCN2021085408-appb-100008
    Bit reports the starting position of the window of the frequency-domain basis vector, where each layer starts with
    Figure PCTCN2021085408-appb-100009
    bit reporting, or the corresponding frequency domain base vector of each layer is the same.
  54. 根据权利要求50-53中任一项所述的方法，其特征在于，所述终端设备通过
    Figure PCTCN2021085408-appb-100010
    或
    Figure PCTCN2021085408-appb-100011
    比特上报所述最强系数，其中，K 1，2L表示所述终端设备选择用于上报CSI的CSI-RS资源的CSI-RS端口数。     The method according to any one of claims 50 to 53, wherein the terminal device passes
    Figure PCTCN2021085408-appb-100010
    or
    Figure PCTCN2021085408-appb-100011
    The strongest coefficient is reported in bits, wherein K 1 , 2L represents the number of CSI-RS ports selected by the terminal device for reporting CSI-RS resources for CSI.
  55. 根据权利要求50-53中任一项所述的方法，其特征在于，若秩等于1，所述终端设备通过
    Figure PCTCN2021085408-appb-100012
    比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者     The method according to any one of claims 50-53, wherein if the rank is equal to 1, the terminal device passes the
    Figure PCTCN2021085408-appb-100012
    bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
    若秩大于1，所述终端设备通过
    Figure PCTCN2021085408-appb-100013
    比特上报每一层的最强系数，其中，α为高层参数或预定义参数，
    Figure PCTCN2021085408-appb-100014
    P CSI-RS为用于上报CSI的CSI-RS端口的总数量。     If the rank is greater than 1, the terminal device passes the
    Figure PCTCN2021085408-appb-100013
    Bits report the strongest coefficient of each layer, where α is a high-level parameter or a predefined parameter,
    Figure PCTCN2021085408-appb-100014
    P CSI-RS is the total number of CSI-RS ports used for reporting CSI.
  56. 根据权利要求50-53中任一项所述的方法，其特征在于，若秩等于1，所述终端设备通过
    Figure PCTCN2021085408-appb-100015
    比特上报所述最强系数，其中，K NZ表示所有层总的非零系数个数；或者     The method according to any one of claims 50-53, wherein if the rank is equal to 1, the terminal device passes the
    Figure PCTCN2021085408-appb-100015
    bit reporting the strongest coefficient, where K NZ represents the total number of non-zero coefficients in all layers; or
    若秩大于1，所述终端设备通过
    Figure PCTCN2021085408-appb-100016
    比特上报每一层的最强系数，其中，
    Figure PCTCN2021085408-appb-100017
    If the rank is greater than 1, the terminal device passes the
    Figure PCTCN2021085408-appb-100016
    Bits report the strongest coefficient of each layer, where,
    Figure PCTCN2021085408-appb-100017
  57. 根据权利要求50-53中任一项所述的方法，其特征在于，若秩等于1，所述终端设备通过
    Figure PCTCN2021085408-appb-100018
    比特上报所述最强系数；或者     The method according to any one of claims 50-53, wherein if the rank is equal to 1, the terminal device passes the
    Figure PCTCN2021085408-appb-100018
    bit reporting the strongest coefficient; or
    若秩大于1，所述终端设备上报所述最强系数所在的层，并且通过
    Figure PCTCN2021085408-appb-100019
    或
    Figure PCTCN2021085408-appb-100020
    比特上报最强系数在所述层中的位置，其中，α为高层参数或预定义参数，
    Figure PCTCN2021085408-appb-100021
    If the rank is greater than 1, the terminal device reports the layer where the strongest coefficient is located, and passes the
    Figure PCTCN2021085408-appb-100019
    or
    Figure PCTCN2021085408-appb-100020
    The bit reports the position of the strongest coefficient in the layer, where α is a high-level parameter or a predefined parameter,
    Figure PCTCN2021085408-appb-100021
  58. 根据权利要求50-57中任一项所述的方法，其特征在于，若M大于1，对于所述终端设备用于上报CSI的每个CSI-RS端口，所述终端设备只上报一个非零系数。The method according to any one of claims 50-57, wherein if M is greater than 1, for each CSI-RS port used by the terminal device to report CSI, the terminal device only reports one non-zero value coefficient.
  59. 根据权利要求50-58中任一项所述的方法，其特征在于，所述终端设备上报CQI，包括：The method according to any one of claims 50-58, wherein the reporting of the CQI by the terminal device comprises:
    所述终端设备仅上报宽带CQI；或者The terminal device only reports the broadband CQI; or
    若M大于1，所述终端设备上报子带CQI。If M is greater than 1, the terminal equipment reports the subband CQI.
  60. 根据权利要求50-59中任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 50-59, wherein the method further comprises:
    所述终端设备根据用于上报CSI的至少一个CSI-RS资源确定CQI。The terminal device determines the CQI according to at least one CSI-RS resource used for reporting CSI.
  61. 根据权利要求50-60中任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 50-60, wherein the method further comprises:
    所述终端设备根据高层参数或预定义参数确定CQI子带大小。The terminal device determines the CQI subband size according to higher layer parameters or predefined parameters.
  62. 根据权利要求61所述的方法，其特征在于，所述CQI子带大小根据上报带宽和第一参数确定，所述第一参数是高层参数或预定义参数。The method according to claim 61, wherein the size of the CQI subband is determined according to a reporting bandwidth and a first parameter, and the first parameter is a high layer parameter or a predefined parameter.
  63. 根据权利要求61所述的方法，其特征在于，所述CQI子带大小根据标称子带大小和第二参数确定，所述第二参数是高层参数或预定义参数，其中，所述标称子带大小根据带宽部分BWP大小和高层参数子带大小确定。The method of claim 61, wherein the CQI subband size is determined according to a nominal subband size and a second parameter, the second parameter is a high layer parameter or a predefined parameter, wherein the nominal The subband size is determined according to the bandwidth part BWP size and the high layer parameter subband size.
  64. 根据权利要求50-63中任一项所述的方法，其特征在于，所述第一指示信息包括端口位置指示信息和/或频域位置指示信息。The method according to any one of claims 50-63, wherein the first indication information includes port location indication information and/or frequency domain location indication information.
  65. 根据权利要求64所述的方法，其特征在于，所述端口位置指示信息用于指示用于上报CSI的CSI-RS资源的CSI-RS端口的位置。The method according to claim 64, wherein the port position indication information is used to indicate the position of a CSI-RS port used for reporting CSI-RS resources of CSI.
  66. 根据权利要求64或65所述的方法，其特征在于，所述频域位置指示信息用于指示最强系数的频域位置信息。The method according to claim 64 or 65, wherein the frequency domain position indication information is used to indicate frequency domain position information of the strongest coefficient.
  67. 根据权利要求66所述的方法，其特征在于，所述频域位置指示信息用于指示最强系数的频域位置相对于所述窗口位置S的偏移量f Δ，或者 The method according to claim 66, wherein the frequency domain position indication information is used to indicate the offset f Δ of the frequency domain position of the strongest coefficient relative to the window position S, or
    所述频域位置指示信息用于指示最强系数的绝对频域位置。The frequency domain position indication information is used to indicate the absolute frequency domain position of the strongest coefficient.
  68. 根据权利要求68所述的方法，其特征在于，所述最强系数的绝对频域位置通过mod(S+f Δ，N3)确定，其中N3表示PMI子带个数，f Δ表示最强系数的频域位置相对于所述窗口位置S的偏移量。 The method according to claim 68, wherein the absolute frequency domain position of the strongest coefficient is determined by mod(S+f Δ , N3), wherein N3 represents the number of PMI subbands, and f Δ represents the strongest coefficient The offset of the frequency domain position relative to the window position S.
  69. 根据权利要求67或68所述的方法，其特征在于，每一层对应的最强系数的频域位置相对于所述窗口位置S的偏移量f Δ相同。 The method according to claim 67 or 68, wherein the offset f Δ of the frequency domain position of the strongest coefficient corresponding to each layer relative to the window position S is the same.
  70. 根据权利要求67-69所述的方法，其特征在于，所述最强系数的频域位置相对窗口位置S的偏移量f Δ根据窗口长度N确定，或者是由网络设备配置的，或者是预定义的。 The method according to claims 67-69, wherein the offset f Δ of the frequency domain position of the strongest coefficient relative to the window position S is determined according to the window length N, or is configured by a network device, or is pre-defined.
  71. 根据权利要求64-69所述的方法，其特征在于，所述端口位置指示信息的位宽可以为K 1比 特或2L比特，或者为
    Figure PCTCN2021085408-appb-100022
    比特或
    Figure PCTCN2021085408-appb-100023
    比特。     The method according to claims 64-69, wherein the bit width of the port position indication information may be K 1 bit or 2L bit, or
    Figure PCTCN2021085408-appb-100022
    bits or
    Figure PCTCN2021085408-appb-100023
    bits.
  72. 根据权利要求64-69所述的方法，其特征在于，所述频域位置指示信息的位宽可以为N比特或
    Figure PCTCN2021085408-appb-100024
    比特，其中，N表示窗口长度。     The method according to claims 64-69, wherein the bit width of the frequency domain location indication information can be N bits or
    Figure PCTCN2021085408-appb-100024
    bits, where N represents the window length.
  73. 根据权利要求64-69所述的方法，其特征在于，所述终端设备上报第一指示信息，包括：The method according to claims 64-69, wherein the terminal device reporting the first indication information includes:
    若层数V大于1，所述终端设备上报V个端口位置指示信息和一个频域位置指示信息。74、根据权利要求39-43中任一项所述的方法，其特征在于，所述S是网络设备配置的或预定义的。If the number of layers V is greater than 1, the terminal device reports V port location indication information and one frequency domain location indication information. 74. The method of any one of claims 39-43, wherein the S is configured or predefined by a network device.
  74. 一种码本上报方法，其特征在于，包括A codebook reporting method, comprising:
    网络设备向终端设备发送信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；The network device sends a channel state information reference signal CSI-RS resource set to the terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port, wherein, Ks is an integer greater than or equal to 1;
    所述网络设备向所述终端设备上报信道状态信息CSI，所述CSI是根据所述CSI-RS资源集合和/或CSI相关参数确定的其中，所述CSI包括预编码矩阵指示PMI。The network device reports channel state information CSI to the terminal device, where the CSI is determined according to the CSI-RS resource set and/or CSI-related parameters, wherein the CSI includes a precoding matrix indication PMI.
  75. 一种终端设备，其特征在于，包括：A terminal device, characterized in that it includes:
    通信单元，用于接收网络设备发送的信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；A communication unit, configured to receive a channel state information reference signal CSI-RS resource set sent by a network device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port, where Ks is an integer greater than or equal to 1;
    处理单元，用于根据所述CSI-RS资源集合和/或CSI相关参数，确定信道状态信息CSI，其中，所述CSI包括预编码矩阵指示PMI；a processing unit, configured to determine channel state information CSI according to the CSI-RS resource set and/or CSI-related parameters, where the CSI includes a precoding matrix indication PMI;
    所述通信单元还用于：向所述网络设备上报所述CSI。The communication unit is further configured to: report the CSI to the network device.
  76. 一种网络设备，其特征在于，包括：A network device, characterized in that it includes:
    通信单元，用于向终端设备发送信道状态信息参考信号CSI-RS资源集合，其中，所述CSI-RS资源集合包括Ks个CSI-RS资源，每个CSI-RS资源包括至少一个CSI-RS端口，其中，Ks为大于等于1的整数；以及A communication unit, configured to send a channel state information reference signal CSI-RS resource set to a terminal device, wherein the CSI-RS resource set includes Ks CSI-RS resources, and each CSI-RS resource includes at least one CSI-RS port , where Ks is an integer greater than or equal to 1; and
    向所述终端设备上报信道状态信息CSI，所述CSI是根据所述CSI-RS资源集合和/或CSI相关参数确定的其中，所述CSI包括预编码矩阵指示PMI。reporting channel state information CSI to the terminal device, where the CSI is determined according to the CSI-RS resource set and/or CSI-related parameters, wherein the CSI includes a precoding matrix indication PMI.
  77. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至73中任一项所述的方法。A terminal device, characterized in that it comprises: 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 73. one of the methods described.
  78. 一种网络设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求74所述的方法。A network device, characterized by comprising: a processor and a memory, where 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 the method as claimed in claim 74 .
  79. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至73中任一项所述的方法。A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device on which the chip is installed executes the method according to any one of claims 1 to 73.
  80. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求74所述的方法。A chip, characterized by comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method as claimed in claim 74 .
  81. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至73中任一项所述的方法。A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 73.
  82. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求74所述的方法。A computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the method of claim 74 .
  83. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至73中任一项所述的方法。A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 73.
  84. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求74所述的方法。A computer program product comprising computer program instructions that cause a computer to perform the method of claim 74.
  85. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至73中任一项所述的方法。A computer program, characterized in that the computer program causes a computer to perform the method as claimed in any one of claims 1 to 73.
  86. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求74所述的方法。A computer program, characterized in that the computer program causes a computer to perform the method of claim 74.
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