WO2021087908A1 - 无线通信的方法和终端设备 - Google Patents

无线通信的方法和终端设备 Download PDF

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Publication number
WO2021087908A1
WO2021087908A1 PCT/CN2019/116396 CN2019116396W WO2021087908A1 WO 2021087908 A1 WO2021087908 A1 WO 2021087908A1 CN 2019116396 W CN2019116396 W CN 2019116396W WO 2021087908 A1 WO2021087908 A1 WO 2021087908A1
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Prior art keywords
subband
pmi
subbands
frequency domain
terminal device
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PCT/CN2019/116396
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English (en)
French (fr)
Inventor
黄莹沛
陈文洪
史志华
方昀
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN201980100071.XA priority Critical patent/CN114342517A/zh
Priority to PCT/CN2019/116396 priority patent/WO2021087908A1/zh
Publication of WO2021087908A1 publication Critical patent/WO2021087908A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular to a method and terminal device for wireless communication.
  • New Radio (NR) type II (type II) codebook can be expressed as Among them, W 1 indicates 2L spatial beams (beam), Indicate M frequency-domain Discrete Fourier Transform (DFT) basis vectors, (2L*M) indicates the weighting coefficient of any pair of spatial beams and frequency domain DFT vectors.
  • DFT Discrete Fourier Transform
  • the terminal reports the channel state information of the network devices may be the L carries the beam W 1,
  • the indicated M frequency-domain DFT basis vectors, and the quantized Among them, the M frequency domain DFT basis vectors are selected from N3 frequency domain DFT vectors.
  • the embodiments of the present application provide a wireless communication method and terminal equipment, which can implement CSI reporting when converting from the frequency domain to the transform domain.
  • a wireless communication method determines channel state information CSI parameters, where the CSI parameters include at least one of the following: the number of discrete Fourier transform DFT vectors N3 in the frequency domain, and the channel quality Indicating the ratio R of the CQI subband size and the precoding matrix indicating the PMI subband size, the number K0 of the largest non-zero element in the weighting coefficient matrix of the codebook, the number L of the spatial domain DFT vectors that the terminal device selects to report, The terminal device selects the number M of frequency-domain DFT vectors to report; the terminal device determines the CSI to report to the network device according to the CSI parameter, and the CSI includes at least one of the following: the strongest coefficient indicates SCI , Space SD indication and frequency domain FD indication.
  • a terminal device which is used to execute the foregoing first aspect or any possible implementation of the first aspect.
  • the terminal device includes a unit for executing the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • a terminal device in a third aspect, includes a processor and a memory.
  • the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a chip is provided, which is used to implement the method in the first aspect or its implementation manners.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the above-mentioned first aspect or each of its implementation manners.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the above-mentioned first aspect or each of its implementation manners.
  • a computer program product including computer program instructions that cause a computer to execute the method in the first aspect or its implementation manners.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect or its implementation manners.
  • the terminal device can determine the CSI parameter, and further can determine the CSI information according to the CSI parameter, so that the CSI information can be reported to the network device.
  • Fig. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of selecting a frequency domain DFT basis vector according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an example of the correspondence relationship between the frequency domain DFT vector and the PMI subband.
  • FIG. 5 is a schematic diagram of another example of the correspondence between the frequency domain DFT vector and the PMI subband.
  • FIG. 6 is a schematic diagram of another example of the correspondence between the frequency domain DFT vector and the PMI subband.
  • FIG. 7 is a schematic diagram of another example of the correspondence relationship between the frequency domain DFT vector and the PMI subband.
  • FIG. 8 is a schematic diagram of another example of the correspondence between the frequency domain DFT vector and the PMI subband.
  • FIG. 9 is a schematic diagram of another example of the correspondence between the frequency domain DFT vector and the PMI subband.
  • FIG. 10 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication device according to another embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • IoT Internet of Things
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 having a communication function and a terminal device 120.
  • 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 network controllers, mobility management entities, and other network entities, which are not limited in the embodiment of the present application.
  • the NR Type II codebook is independently coded in the frequency domain (each subband). Due to the high spatial quantization accuracy, the total amount of feedback may be too large.
  • the domain-space joint codebook can greatly save the amount of feedback under the condition of ensuring NR performance.
  • the R16 NR type II codebook can be expressed as formula (1):
  • W 1 can be used to indicate 2L spatial beams (beam); Can be used to indicate M frequency domain DFT basis vectors (Frequency Basis); (2L*M matrix) can be used to indicate the weighting coefficient of any pair of spatial beam and frequency domain DFT basis vectors.
  • CSI reported by the terminal device may include L indicated by beam W 1, The indicated M frequency-domain DFT basis vectors and quantized After the network device receives the CSI, it can obtain the downlink CSI of each layer through the product of the three.
  • L value that is, the number of spatial (Spatial Dimensions, SD) DFT basis vectors (Spatial Basis), where the L value can be configured by the network device to the terminal device, for example, the network device can send wireless resources to the terminal device Control (Radio Resource Control, RRC) signaling, where the RRC signaling indicates the L value, so that the terminal device can obtain the L value based on the RRC signaling;
  • RRC Radio Resource Control
  • the M value (related to the reported frequency domain bandwidth), that is, the number of frequency domain (Frequency Dimensions, FD) DFT basis vectors (or FD basis) selected by the terminal device for reporting;
  • K0 ⁇ 2LM
  • Nsb the number of subbands reported by CSI
  • R represents the ratio of the channel quality indicator (Channel Quality Indicator, CQI) subband size to the precoding matrix indicator (Precoding Matrix Indicator, PMI) subband size;
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • the quantization precision in, for example, the amplitude can be 3/4bit, and the phase can also be 3/4bit quantization.
  • the amplitude is quantized by 4bit and the phase is quantized by 3bit; while the smaller part of the amplitude can be quantized by 2bit and the phase is quantized by 2bit; or, for the 0th
  • the weighting coefficients corresponding to the frequency-domain basis vectors, both amplitude and phase adopt 4bit quantization, while for the weighting coefficients corresponding to other frequency-domain basis vectors, both amplitude and phase adopt 3bit quantization.
  • the terminal device can indicate the M DFT vectors selected by the terminal device through the FD indicator (indicator); indicate the selected L spatial domain DFT basis vectors through the SD indicator (indicator); and use the strongest coefficient indicator (SCI) to indicate The strongest coefficient.
  • FD indicator indicator
  • SD indicator indicator
  • SCI strongest coefficient indicator
  • the size of the CQI subband can be configured by higher layers, as shown in the following table:
  • the network device can configure the subband for the terminal device to report the CQI.
  • the upper layer can configure it in a bitmap mode.
  • FIG. 3 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the application.
  • the method 200 may be executed by the terminal device in the communication system shown in FIG. 1.
  • the method 200 may include at least part of the following content:
  • the terminal device determines channel state information CSI parameters, where the CSI parameters include at least one of the following: the number N3 of the frequency domain discrete Fourier transform DFT vector, the channel quality indicator CQI subband size, and the precoding matrix indicator PMI
  • the CSI parameters include at least one of the following: the number N3 of the frequency domain discrete Fourier transform DFT vector, the channel quality indicator CQI subband size, and the precoding matrix indicator PMI
  • the ratio of subband size R, the number of the largest non-zero elements K0 in the weighting coefficient matrix of the codebook, the number L of spatial domain DFT vectors that the terminal device chooses to report, and the frequency domain DFT vector that the terminal device chooses to report The number of M;
  • the terminal device determines CSI to report to the network device according to the CSI parameter, where the CSI includes at least one of the following: a strongest coefficient indicator SCI, a spatial SD indicator, and a frequency domain FD indicator.
  • the network device may configure Z PMI subbands for the terminal device, and the Z PMI subbands may include part or all of the multiple PMI subbands.
  • the Z PMI subbands may be continuous or discontinuous.
  • the number of configured PMI subbands is the same as the number N3 of frequency domain DFT vectors, it can be determined that the N3 frequency domain DFT vectors and the N3 PMI subbands have a one-to-one correspondence. Or, if the number of configured PMI subbands is different from the number of frequency domain DFT vectors, the configured PMI subbands can be mapped to the N3 frequency domain DFT vectors according to the situation of the edge PMI subbands, and the following will be combined with specific embodiments Be explained.
  • the ratio R of the CQI subband size to the PMI subband size may be 1 or 2, that is, the size of a CQI subband may be equal to the size of a PMI subband, or the size of a CQI subband may also be equal to 2 PMI subband size.
  • the CQI subband or PMI subband and the frequency domain DFT vector may have a correspondence relationship, for example, the correspondence relationship may be the correspondence between the sequence number of the CQI subband or PMI subband and the index of the frequency domain DFT vector Therefore, the terminal device can determine which frequency domain DFT vector it corresponds to according to the sequence number of the CQI subband or the PMI subband.
  • the PMI subband corresponding to each frequency domain DFT vector may be determined according to the frequency domain order of the CQI subband or the PMI subband (for example, from small to large or from large to small).
  • PMI subbands there are 9 PMI subbands, corresponding to resource blocks (Source Block, SB) 0 ⁇ SB8.
  • the PMI subbands corresponding to the N3 frequency-domain DFT vectors can also be determined according to other rules.
  • the PMI subbands corresponding to each frequency-domain DFT vector can be determined according to the formula (x+d)mod(N3).
  • the correspondence between the N3 frequency domain DFT vectors and the PMI subband can be: FD0 corresponds to the second PMI subband, namely SB2, FD1 corresponds to the third PMI subband, That is, SB4 and FD2 correspond to the fourth PMI subband, namely SB5, and FD1 correspond to the fifth PMI subband, namely SB8.
  • the sequence number of the PMI subband, the sequence number of the CQI subband, and the index of the frequency domain DFT vector start counting from 0, that is, PMI subband 0 represents the first PMI subband , CQI subband 0 represents the first PMI subband, and frequency domain DFT vector 0 represents the first frequency domain DFT vector.
  • the sequence number of the PMI subband in the embodiment of the present application may be the sequence number of the PMI subband in the configured PMI subband, as shown in the example in FIG. 4, SB0 It can correspond to PMI subband 0, that is, the first PMI subband, SB2 corresponds to PMI subband 1, that is, the second subband, and so on.
  • the N3 Nsb*R.
  • the terminal device may also determine the frequency according to at least one of the number of PMI subbands, the number of CQI subbands, the ratio R of the CQI subband size and the PMI subband size.
  • the number of domain DFT vectors is N3.
  • the network device configures the terminal device to report the first subband and/or the last subband, this
  • the size of the first edge subband is determined according to the following formula: among them, Indicates the bandwidth of the CQI subband, Indicates the starting RB sequence number of the bandwidth part (Bandwidth, BWP) (i);
  • the size of the last edge subband is determined according to the following formula:
  • the terminal device determines that the number N3 of frequency domain DFT vectors is equal to the number of PMI subbands N sb ⁇ RX, and further, the N3 frequency domain DFT vectors can be one-to-one corresponding to the N3 PMIs Subband.
  • the N3 frequency-domain DFT vectors correspond to the N3 frequency-domain DFT vectors in the order of the sequence numbers of the PMI subbands, as shown in FIG.
  • the terminal device may determine the corresponding relationship between each of the configured Z PMI subbands and the N3 frequency domain DFT vectors according to the corresponding relationship between the edge CQI subbands and the PMI subbands.
  • the edge CQI subbands correspond to at least two PMI subbands, it can be determined that the number of PMI subbands Z is the same as the number of DFT vectors in the frequency domain N3, and the Z PMI subbands can be mapped to this one by one.
  • N3 frequency domain DFT vectors may be sequentially corresponded to the N3 frequency domain DFT vectors according to the sequence number of the PMI subbands from small to large.
  • the first PMI subband corresponds to the first frequency domain DFT vector
  • the second PMI subband corresponds to the first frequency domain DFT vector
  • the second PMI subband corresponds to the first frequency domain DFT vector.
  • the band corresponds to the second frequency domain DFT vector, and so on; or, it can also correspond to the N3 frequency domain DFT vectors in descending order of the PMI subband sequence number, specifically, the first PMI subband Corresponding to the last frequency domain DFT vector, the second PMI subband corresponds to the penultimate frequency domain DFT vector, and so on.
  • Case 2 If the first CQI subband corresponds to only one PMI subband, the terminal device can determine from the second frequency domain DFT vector of the N3 frequency domain DFT vectors, each frequency domain DFT The vector corresponds to one PMI subband in the Z PMI subbands. That is, the first frequency domain DFT vector does not correspond to the PMI subband.
  • the first PMI subband in the Z PMI subbands corresponds to the second frequency domain DFT vector in the N3 frequency domain DFT vectors
  • the other PMI subbands in the Z PMI subbands follow
  • the sequence numbers of the PMI subbands in descending order correspond to the last N3-2 frequency domain DFT vectors of the N3 DFT vectors, that is, PMI subband 0 corresponds to the second frequency domain DFT vector, that is, FD1
  • PMI subbands Band 1 corresponds to FD2, and so on, as shown in Figure 7.
  • the last PMI subband (ie PMI subband Z-1) in the Z PMI subbands corresponds to the second frequency domain DFT vector in the N3 frequency domain DFT vectors
  • the other PMI subbands in the subband correspond to the last N3-2 frequency domain DFT vectors of the N3 DFT vectors in descending order of the sequence number of the PMI subband, that is, the PMI subband Z-1 corresponds to FD1, and the PMI subband Z-2 corresponds to FD2, and so on.
  • the Z PMI subbands may be corresponded to the last N3-1 frequency domain DFT vectors of the N3 frequency domain DFT vectors in other order, for example, according to the formula (x+d)mod(N3) , Determine the order of the PMI subband corresponding to each frequency domain DFT vector in the configured PMI subband, where x is the index of the frequency domain DFT vector, mod represents the modulus, and d is a positive integer.
  • the terminal device may determine that there is no subband PMI on the frequency domain DFT vector corresponding to the PMI subband.
  • the terminal device may determine the first subband PMI according to the last Z-1 subbands of the Z PMI subbands, for example, for the last Z-1 PMI subbands (ie, PMI subbands) 1 ⁇ Z-1) PMI is interpolated, extrapolated, repeated or zero-filled to obtain the first sub-band PMI, and the other sub-band PMI (including the second to Z-th sub-band PMI) are corresponding respectively
  • the PMI on the PMI subband for example, can be the second subband PMI according to the PMI on the second PMI subband, and so on, these subband PMIs can sequentially correspond to the N3 frequency domain DFT vectors.
  • the terminal device may also determine the first subband CQI according to the first PMI subband (PMI subband 0) and/or the second PMI subband (PMI subband 1), and according to the last PMI subband (PMI subband Z-1) and/or the penultimate PMI subband (PMI subband Z-2), determine the last subband CQI.
  • the terminal device may determine the first subband CQI according to the CQI on the first PMI subband and/or the second PMI subband, and according to the last PMI subband and/or the penultimate
  • the CQI on the PMI subband determines the CQI of the last subband.
  • Case 3 If the last CQI subband corresponds to only one PMI subband, the terminal device may determine to start from the penultimate frequency domain DFT vector of the N3 frequency domain DFT vectors, and each frequency domain DFT The vector corresponds to one of the Z PMI subbands, that is, the last frequency domain DFT vector does not correspond to the PMI subband, as shown in FIG. 8.
  • the last PMI subband in the Z PMI subbands corresponds to the penultimate frequency domain DFT vector in the N3 frequency domain DFT vectors, and the other PMI subbands in the Z PMI subbands follow
  • the sequence numbers of the PMI subbands in descending order correspond to the first N3-2 frequency domain DFT vectors (from large to small) among the N3 DFT vectors, that is, the PMI subband Z-1 corresponds to the penultimate frequency.
  • the domain DFT vector is FD N3-2
  • the PMI subband Z-2 corresponds to the third frequency domain DFT vector from the bottom , that is, FD N3-3, and so on.
  • the first PMI subband in the Z PMI subbands corresponds to the second frequency domain DFT vector in the N3 frequency domain DFT vectors
  • the other PMI subbands in the Z PMI subbands According to the sequence numbers of the PMI subbands, they correspond to the first N3-2 frequency domain DFT vectors (from large to small) among the N3 DFT vectors in order from small to large. That is, PMI subband 0 corresponds to FD N3-2 , PMI subband 1 corresponds to FD N3-3 , and so on.
  • the Z PMI subbands may also correspond to the first N3-1 frequency domain DFT vectors among the N3 frequency domain DFT vectors in other order, for example, according to (x+d)mod(N3) to determine The sequence of the PMI subband corresponding to each frequency domain DFT vector in the configured PMI subband, where x is the index of the frequency domain DFT vector, mod represents the modulus, and d is a positive integer.
  • the terminal device may determine that there is no subband PMI on the frequency domain DFT vector corresponding to the PMI subband.
  • the terminal device may determine the last subband PMI according to the first Z-1 subbands in the Z PMI subbands, for example, for the first Z-1 PMI subbands (ie, PMI subbands 1 to 1 to The PMI on Z-1) is subjected to interpolation, extrapolation, repetition or zero-padded processing to obtain the last subband PMI, and the other subband PMI (including the first to Z-1th subband PMI) are the corresponding PMIs respectively
  • the PMI on the subband for example, the PMI on the first PMI subband is the first subband PMI, and so on, these subband PMIs may correspond to the N3 frequency domain DFT vectors in sequence.
  • the terminal device may also determine the first subband CQI according to the first PMI subband (PMI subband 0) and/or the second PMI subband (PMI subband 1), and according to the last PMI subband (PMI subband Z-1) and/or the penultimate PMI subband (PMI subband Z-2), determine the last subband CQI.
  • the terminal device may determine the first subband CQI according to the CQI on the first PMI subband and/or the second PMI subband, and according to the last PMI subband and/or the penultimate
  • the CQI on the PMI subband determines the CQI of the last subband.
  • N3 can be redefined to reduce the feedback overhead of CSI.
  • the terminal device can also perform processing such as interpolation or extrapolation on the non-edge PMI subbands to determine the edge PMI (that is, the first subband PMI and the last subband PMI), which is beneficial to improve the feedback accuracy.
  • the terminal device may also combine the edge PMI subbands to correspond to the same frequency domain DFT vector.
  • the first A PMI subbands and the last B PMI subbands are combined to correspond to the same DFT vector.
  • the first frequency domain DFT vector corresponds to the first A PMI subbands and the last B PMI subbands, or it can be determined that the last DFT vector corresponds to the previous A PMI subbands and the last B PMI subbands. band.
  • the non-edge PMI subbands may sequentially correspond to other frequency domain DFT vectors.
  • the first PMI subband and the last PMI subband both correspond to FD0
  • the second PMI subband corresponds to FD1
  • so on the first PMI subband and the last PMI subband
  • the terminal device may also determine not to report the FD indication or the SD indication when certain conditions are met, which is beneficial to reducing feedback overhead.
  • the CSI does not include the FD indication, that is, the FD indication is not reported;
  • the SD indication is not reported.
  • the L is 2 or 4, and correspondingly, the number of antenna ports is 4 or 8.
  • the terminal device may determine the K0 according to ⁇ *2LM and a first value, where ⁇ is used to determine the maximum number of non-zero coefficients, where the first value It is a fixed parameter, or preset, or configured by the network device.
  • the first value is 2.
  • the method embodiments of the present application are described in detail above with reference to Figs. 3 to 9, and the device embodiments of the present application are described in detail below in conjunction with Figs. 10 to 12. It should be understood that the device embodiments and the method embodiments correspond to each other and are similar The description can refer to the method embodiment.
  • FIG. 10 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the determining module 410 is configured to determine channel state information CSI parameters, where the CSI parameters include at least one of the following: the number N3 of the frequency domain discrete Fourier transform DFT vector, the channel quality indicator CQI subband size and the precoding matrix Indicate the ratio R of the PMI subband size, the number K0 of the largest non-zero element in the weighting coefficient matrix of the codebook, the terminal device selects the number L of spatial domain DFT vectors to report, and the terminal device selects the frequency domain to report The number of DFT vectors M; and determining the CSI reported to the network device according to the CSI parameters, the CSI including at least one of the following: the strongest coefficient indicator SCI, the spatial SD indicator, and the frequency domain FD indicator.
  • the CSI parameters include at least one of the following: the strongest coefficient indicator SCI, the spatial SD indicator, and the frequency domain FD indicator.
  • the determining module 410 is further configured to:
  • the terminal device determines the PMI subbands respectively corresponding to the N3 frequency domain DFT vectors according to the sequence number of the configured CQI subband or the sequence number of the PMI subband.
  • the determining module 410 is specifically configured to:
  • the PMI subbands corresponding to the N3 frequency domain DFT vectors are determined, where the first correspondence is the CQI subband. Correspondence between band or PMI subband and frequency domain DFT vector.
  • the first frequency domain DFT vector corresponds to the first subband
  • the second frequency domain DFT vector corresponds to the second subband
  • the first frequency domain DFT vector corresponds to the second subband
  • the first frequency domain DFT vector corresponds to the second subband
  • the index of the domain DFT vector is smaller than the index of the second frequency domain DFT vector
  • the sequence number of the first subband is smaller than the sequence number of the second subband
  • the first subband is the first CQI subband
  • the The second subband is a second CQI subband
  • the first subband is a first PMI subband
  • the second subband is a second PMI subband.
  • the determining module 410 is further configured to:
  • the number N3 of the frequency domain DFT vectors is determined.
  • the determining module 410 is specifically configured to:
  • the network device configures the terminal device to report the first subband and/or the last subband, and determines the frequency domain DFT vector
  • the number of N3 N sb ⁇ RX, where the N sb is the number of subbands reported in the CSI, and the X is less than or equal to half of the configuration in the first subband and/or the last subband The number of subband sizes.
  • the number N3 of the frequency domain DFT vectors is equal to the number Z of the PMI subbands, and the N3 DFT vectors in the frequency domain correspond to the Z PMI subbands in a one-to-one correspondence.
  • the determining module 410 is further configured to:
  • the determining module 410 is further configured to:
  • the corresponding relationship between the edge CQI subbands and the PMI subbands is determined.
  • the determining module 410 is specifically configured to:
  • the first CQI subband corresponds to only one PMI subband, determining that the first PMI subband of the Z PMI subbands corresponds to the second frequency domain DFT vector of the N3 frequency domain DFT vectors, and The other PMI subbands in the Z PMI subbands correspond to the last N3-2 frequency domain DFT vectors of the N3 DFT vectors in order according to the sequence numbers of the PMI subbands.
  • the determining module 410 is further configured to:
  • the determining module 410 is further configured to:
  • the last CQI subband corresponds to only one PMI subband
  • the last PMI subband of the Z PMI subbands corresponds to the penultimate frequency domain DFT vector among the N3 frequency domain DFT vectors
  • the Z The other PMI subbands in the PMI subbands correspond to the first N3-2 frequency domain DFT vectors in the N3 frequency domain DFT vectors according to the sequence number of the PMI subband.
  • the determining module 410 is further configured to:
  • the first A PMI subbands and the last B PMI subbands of the Z subbands correspond to the same frequency domain DFT vector, where A is a positive integer, and B Is a positive integer.
  • the determining module 410 is further configured to:
  • the determining module 410 is further configured to:
  • the L is 2 or 4.
  • the determining module 410 is further configured to:
  • the K0 is determined according to ⁇ *2LM and a first value, wherein the ⁇ is used to determine the maximum number of non-zero coefficients, and the first value is preset or configured by a network device.
  • the determining module 410 is specifically configured to:
  • the maximum value of ⁇ *2LM and the first value is determined to be the K0.
  • the first value is 2.
  • the aforementioned determining module may be one or more processors.
  • terminal device 400 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 each unit in the terminal device 400 are to implement the method shown in FIG. 3, respectively.
  • the corresponding process of the terminal equipment in 200 will not be repeated here.
  • FIG. 11 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 shown in FIG. 11 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the application. For the sake of brevity , I won’t repeat it here.
  • FIG. 12 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 700 shown in FIG. 12 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 can control the input interface 730 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous 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 to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

一种无线通信的方法和终端设备,该方法包括:终端设备确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;所述终端设备根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。

Description

无线通信的方法和终端设备 技术领域
本申请实施例涉及通信领域,具体涉及一种无线通信的方法和终端设备。
背景技术
版本(Rel)16中,新无线(New Radio,NR)类型二(type II)码本可以表示为
Figure PCTCN2019116396-appb-000001
其中,W 1指示2L个空间波束(beam),
Figure PCTCN2019116396-appb-000002
指示M个频域离散傅里叶变换(Discrete Fourier Transformation,DFT)基向量,
Figure PCTCN2019116396-appb-000003
(2L*M)指示任意空间波束、频域DFT向量对的加权系数。
终端设备向网络设备的上报信道状态信息(Channel State Information,CSI)中可以承载有W 1的L个beam,
Figure PCTCN2019116396-appb-000004
指示的M个频域DFT基向量,以及量化的
Figure PCTCN2019116396-appb-000005
其中,该M个频域DFT基向量是从N3个频域DFT向量中选择出来的。
对于R16 Type II码本,需要从频域到变换域进行转换,此情况下,如何进行CSI上报是一项亟需解决的问题。
发明内容
本申请实施例提供一种无线通信的方法和终端设备,能够实现从频域到变换域转换时的CSI上报。
第一方面,提供了一种无线通信的方法,终端设备确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;所述终端设备根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。
第二方面,提供了一种终端设备,用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地,该终端设备包括用于执行上述第一方面或第一方面的任一可能的实现方式中的方法的单元。
第三方面,提供了一种终端设备,该终端设备包括: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。
第四方面,提供了一种芯片,用于实现上述第一方面或其各实现方式中的方法。
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,使得安装有该芯片的设备执行如上述第一方面或其各实现方式中的方法。
第五方面,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或其各实现方式中的方法。
第六方面,提供了一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述第一方面或其各实现方式中的方法。
第七方面,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或其各实现方式中的方法。
基于上述技术方案,终端设备可以确定CSI参数,进一步可以根据该CSI参数确定CSI信息,从而可以向网络设备上报CSI信息。
附图说明
图1是本申请实施例提供的一种应用场景的示意性图。
图2是根据本申请实施例的一种选择频域DFT基向量的示意性图。
图3是本申请实施例提供的一种无线通信的方法的示意性图。
图4是频域DFT向量和PMI子带的对应关系的一例示意性图。
图5是频域DFT向量和PMI子带的对应关系的另一例示意性图。
图6是频域DFT向量和PMI子带的对应关系的再一例示意性图。
图7是频域DFT向量和PMI子带的对应关系的再一例示意性图。
图8是频域DFT向量和PMI子带的对应关系的再一例示意性图。
图9是频域DFT向量和PMI子带的对应关系的再一例示意性图。
图10是本申请实施例提供的一种终端设备的示意性框图。
图11是本申请另一实施例提供的一种通信设备的示意性框图。
图12是本申请实施例提供的一种芯片的示意性框图。
具体实施方式
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。基于本申请中的实施例,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。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统或5G系统等。
示例性的,本申请实施例应用的通信系统100如图1所示。该通信系统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。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端设备的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上 型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment,UE)、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。接入终端可以是蜂窝电话、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、个人数字处理(Personal Digital Assistant,PDA)、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、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地,终端设备120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
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,该通信系统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。
可选地,该通信系统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。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统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系统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。
应理解,本文中术语“系统”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。
对于多层码本中每一层码本,NR类型二(Type II)码本在频域(每个子带)独立编码,由于空间量化精度高,可能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。具体地,R16 NR type II码本可以表示为公式(1):
Figure PCTCN2019116396-appb-000006
其中,W 1可以用于指示2L个空间波束(beam);
Figure PCTCN2019116396-appb-000007
可以用于指示M个频域DFT基向量(Frequency Basis);
Figure PCTCN2019116396-appb-000008
(2L*M的矩阵)可以用于指示任意空间beam、频域DFT基向量对的加权系数。
终端设备上报的CSI可以包括W 1指示的L个beam、
Figure PCTCN2019116396-appb-000009
指示的M个频域DFT基向量以及量化的
Figure PCTCN2019116396-appb-000010
网络设备接收到CSI后,可以通过三者积得到每一层下行链路CSI。
其中,对于
Figure PCTCN2019116396-appb-000011
的上报,涉及的主要参数可以包括:
a、L值,即空间域(Spatial Dimensions,SD)DFT基向量(Spatial Basis)的个数,其中,L值可以是网络设备配置给终端设备的,例如,网络设备可以向终端设备发送无线资源控制(Radio Resource Control,RRC)信令,该RRC信令指示L值,从而终端设备可以基于RRC信令获取到L值;
b、M值(与上报频域带宽相关),即终端设备选择的上报的频域(Frequency Dimensions,FD)DFT基向量(或者FD basis)的个数;
c、K0值,用于约束
Figure PCTCN2019116396-appb-000012
上报元素的最大非零系数个数。可选地,K0=β·2LM;
d、Nsb,CSI上报的子带(subband)个数;
e、R,取值为1或2,表示信道质量指示(Channel Quality Indicator,CQI)子带大小和预编码矩阵指示(Precoding Matrix Indicator,PMI)子带大小的比值;
f、N3,频域DFT基向量(FD Basis)的个数,可选地,所述N3=Nsb*R;
g、β,用于确定最大非零系数个数K0;
h、通过一个比特图(bitmap)和/或一个指示确定
Figure PCTCN2019116396-appb-000013
中的非0元素的个数和/或在
Figure PCTCN2019116396-appb-000014
中的位置;
i、通过一组或多组(幅度,相位)参数确定
Figure PCTCN2019116396-appb-000015
中的量化精度,例如,幅度可以采用3/4bit,相位也可以采用3/4bit量化。再比如,对于能量较大的一部分元素(例如前50%),幅度采用4bit量化,相位采用3bit量化;而较小的那部分幅度可以采用2bit量化,相位采用2bit量化;或者,对于第0个频域基向量对应的加权系数,幅度和相位采用均采用4bit量化,而对于其他频域基向量对应的加权系数,幅度和相位采用均采用3bit量化。
其中,M值即
Figure PCTCN2019116396-appb-000016
的列数,M个频域DFT基向量可以是终端设备从N3列DFT向量中选择出来的。例如,如图2所示,N3=13,终端设备从13列DFT向量中选择了[0 4 9],即M=3。
终端设备可以通过FD指示(indicator)指示终端设备选择的M个DFT向量;通过SD指示(indicator)指示选择的L个空间域DFT基向量;以及通过最强系数指示(Strongest coefficient indicator,SCI)指示最强系数。
CQI子带的大小可以由高层配置,如下表所示:
带宽部分(PRBs) 子带大小(PRBs)
<24 N/A
24~72 4,8
73~144 8,16
145~275 16,32
网络设备可以配置终端设备上报CQI的子带,具体地,高层可以通过bitmap方式配置。
对于R16 Type II码本,由于不存在频域概念,即没有定义PMI子带的频域关系,此情况下,如何确定该N3个频域DFT基向量对应的子带以进行CSI上报是一项亟需解决的问题。
应理解,除非另有说明,本申请实施例所使用的所有技术和科学术语与本申请的技术领域的技术人员通常理解的含义相同。本申请中所使用的术语只是为了描述具体的实施例的目的,不是旨在限制本申请的范围。
图3为本申请实施例提供的一种无线通信的方法200的示意性流程图。该方法200可以由图1所示的通信系统中的终端设备执行,如图3所示,该方法200可以包括如下至少部分内容:
S210,终端设备确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;
S220,所述终端设备根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。
应理解,上述CSI参数的含义可以参考前文实施例的相关描述,这里不再赘述。
应理解,在本申请实施例中,可以有多个PMI子带,网络设备可以给终端设备配置Z个PMI子带,该Z个PMI子带可以包括该多个PMI子带中的部分或全部,该Z个PMI子带可以是连续的,或者也可以是不连续的。
在本申请实施例中,若配置的PMI子带的数量和频域DFT向量的数量N3相同,可以确定所述N3个频域DFT向量和所述N3个PMI子带一一对应。或者,若配置的PMI子带的数量和频域DFT向量的数量不同,可以根据边缘PMI子带的情况,将配置的PMI子带对应到所述N3个频域DFT向量,下文结合具体实施例进行说明。
在本申请实施例中,所述CQI子带大小和PMI子带大小的比值R可以为1或2,即一个CQI子带大小可以等于一个PMI子带大小,或者一个CQI子带大小也可以等于2 个PMI子带大小。
当R=1时,可以认为一个CQI子带对应一个PMI子带,当R=2时,可以认为一个CQI子带对应两个PMI子带(边缘的CQI子带除外)。
在一些实施例中,CQI子带或PMI子带和频域DFT向量可以具有对应关系,例如,该对应关系可以是CQI子带或PMI子带的序号和频域DFT向量的索引之间的对应关系,从而,所述终端设备可以根据CQI子带或PMI子带的序号,确定其对应到哪个频域DFT向量。
作为一个实施例,可以按照CQI子带或PMI子带的频域顺序(例如,由小到大或由大到小),确定每个频域DFT向量对应的PMI子带。
如图4所示,共有9个PMI子带,对应资源块(Source Block,SB)0~SB8,其中网络设备给终端设备配置的PMI子带包括SB0,SB2,SB4,SB5和SB8,N3=5,即5个频域DFT向量,记为FD0~FD4,可以按照PMI子带的序号由小到大的顺序对应到5个频域DFT向量。即SB0对应FD0,SB2对应FD1,SB4对应FD2,SB5对应FD3,SB8对应FD4。
在其他实施例中,也可以按照其他规则,确定该N3个频域DFT向量对应的PMI子带,例如,可以根据公式(x+d)mod(N3),确定每个频域DFT向量对应的PMI子带在配置的PMI子带中的顺序,其中x为频域DFT向量的索引,mod表示取模,d为正整数。
假设d=1,结合图4所示示例,该N3个频域DFT向量和PMI子带的对应关系可以为:FD0对应第二个PMI子带,即SB2,FD1对应第三个PMI子带,即SB4,FD2对应第四个PMI子带,即SB5,FD1对应第五个PMI子带,即SB8。
应理解,在本申请实施例中,除非特别说明,PMI子带的序号,CQI子带的序号,频域DFT向量的索引,从0开始计数,即PMI子带0表示第一个PMI子带,CQI子带0表示第一个PMI子带,频域DFT向量0表示第一个频域DFT向量。
还应理解,由于PMI子带可以是不连续的,在本申请实施例中的PMI子带的序号可以是PMI子带在配置的PMI子带中的顺序序号,如图4所示示例,SB0可以对应PMI子带0,即第一个PMI子带,SB2对应PMI子带1,即第二个子带,依次类推。
在一些实施例中,所述N3=Nsb*R。
在本申请另一些实施例中,所述终端设备也可以根据PMI子带的数量、CQI子带的数量,CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3。
作为一个实施例,若所述R为2,边缘子带的大小小于2个PMI子带的大小,并且 网络设备配置所述终端设备上报第一个子带和/或最后一个子带,这种情况下,所述终端设备可以确定所述频域DFT向量的个数N3=N sb×R-X,其中,所述N sb为CSI中上报的子带个数,所述X为第一个子带和/或最后一个子带中小于或等于半个配置的子带大小的个数,其中,X为0,1或2。
应理解,第一个边缘子带的大小根据如下公式确定:
Figure PCTCN2019116396-appb-000017
其中,
Figure PCTCN2019116396-appb-000018
表示CQI子带的带宽,
Figure PCTCN2019116396-appb-000019
表示带宽部分(Bandwidth,BWP)(i)起始的RB序号;
最后一个边缘子带的大小根据如下公式确定:
Figure PCTCN2019116396-appb-000020
时,取值为
Figure PCTCN2019116396-appb-000021
Figure PCTCN2019116396-appb-000022
时,取值为
Figure PCTCN2019116396-appb-000023
其中,
Figure PCTCN2019116396-appb-000024
表示CQI子带的带宽,
Figure PCTCN2019116396-appb-000025
表示BWP(i)起始的RB序号,
Figure PCTCN2019116396-appb-000026
表示BWP(i)的大小。
在该实施例中,所述终端设备确定频域DFT向量的数量N3等于PMI子带的数量N sb×R-X,进一步地,可以将所述N3频域DFT向量一一对应到所述N3个PMI子带。例如,按照PMI子带的序号大小的顺序一一对应于该N3个频域DFT向量,如图5和图6所示。
作为另一实施例,若所述R为2,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,所述终端设备可以确定所述频域DFT向量的个数N3=N sb×R,其中,所述N sb为CSI中上报的子带个数。
进一步地,所述终端设备可以根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系。
情况1:若边缘的CQI子带都至少对应两个PMI子带,可以确定PMI子带的数量Z和频域DFT向量的数量N3相同,进一步可以将该Z个PMI子带一一对应到该N3个频域DFT向量。例如,可以按照PMI子带的序号由小到大的顺序依次对应到所述N3个频域DFT向量,具体地,第一个PMI子带对应第一个频域DFT向量,第二个PMI子带对应第二个频域DFT向量,依次类推;或者,也可以按照PMI子带的序号由大到小的顺序依次对应到所述N3个频域DFT向量,具体地,第一个PMI子带对应最后一个频域DFT向量,第二个PMI子带对应倒数第二个频域DFT向量,依次类推。
情况2:若第一个CQI子带只对应一个PMI子带,所述终端设备可以确定从所述N3个频域DFT向量中的第二个频域DFT向量开始往后,每个频域DFT向量对应所述Z个PMI子带中的一个PMI子带。即第一个频域DFT向量不对应PMI子带。
例如,所述Z个PMI子带中的第一个PMI子带对应所述N3个频域DFT向量中的第二个频域DFT向量,所述Z个PMI子带中的其他PMI子带按照PMI子带的序号由小 到大的顺序依次对应所述N3个DFT向量中的后N3-2个频域DFT向量,即PMI子带0对应第二个频域DFT向量,即FD1,PMI子带1对应FD2,依次类推,如图7所示。
又例如,所述Z个PMI子带中的最后一个PMI子带(即PMI子带Z-1)对应所述N3个频域DFT向量中的第二个频域DFT向量,所述Z个PMI子带中的其他PMI子带按照PMI子带的序号由大到小依次对应所述N3个DFT向量中的后N3-2个频域DFT向量,即PMI子带Z-1对应FD1,PMI子带Z-2对应FD2,依次类推。
或者,也可以按照其他顺序将所述Z个PMI子带对应到所述N3个频域DFT向量中的后N3-1个频域DFT向量,例如,根据公式(x+d)mod(N3),确定每个频域DFT向量对应的PMI子带在配置的PMI子带中的顺序,其中x为频域DFT向量的索引,mod表示取模,d为正整数。
进一步地,所述终端设备可以确定没有PMI子带对应的频域DFT向量上的子带PMI。
例如,所述终端设备可以根据所述Z个PMI子带中的后Z-1个子带,确定第一个子带PMI,例如,对所述后Z-1个PMI子带(即PMI子带1~Z-1)上的PMI进行插值、外推、重复或补零处理,得到所述第一个子带PMI,其他子带PMI(包括第二至第Z个子带PMI)分别为对应的PMI子带上的PMI,例如,可以根据第二个PMI子带上的PMI为第二个子带PMI,依次类推,这些子带PMI可以依次对应所述N3个频域DFT向量。
所述终端设备还可以根据第一个PMI子带(PMI子带0)和/或第二个PMI子带(PMI子带1),确定第一个子带CQI,以及根据最后一个PMI子带(PMI子带Z-1)和/或倒数第二个PMI子带(PMI子带Z-2),确定最后一个子带CQI。
具体地,所述终端设备可以根据第一个PMI子带和/或第二个PMI子带上的CQI确定所述第一个子带CQI,根据最后一个PMI子带和/或倒数第二个PMI子带上的CQI,确定最后一个子带CQI。
情况3:若最后一个CQI子带只对应一个PMI子带,所述终端设备可以确定从所述N3个频域DFT向量中的倒数第二个频域DFT向量开始往前,每个频域DFT向量对应所述Z个PMI子带中的一个PMI子带,即最后一个频域DFT向量不对应PMI子带,如图8所示。
例如,所述Z个PMI子带中的最后一个PMI子带对应所述N3个频域DFT向量中的倒数第二个频域DFT向量,所述Z个PMI子带中的其他PMI子带按照PMI子带的序号由大到小的顺序依次对应所述N3个DFT向量中的前N3-2个频域DFT向量(由大到小),即PMI子带Z-1对应倒数第二个频域DFT向量,即FD N3-2,PMI子带Z-2对应倒数第三个频域DFT向量,即FD N3-3,依次类推。
又例如,所述Z个PMI子带中的第一个PMI子带对应所述N3个频域DFT向量中的第二个频域DFT向量,所述Z个PMI子带中的其他PMI子带按照PMI子带的序号由小到大依次对应所述N3个DFT向量中的前N3-2个频域DFT向量(由大到小)。即PMI子带0对应FD N3-2,PMI子带1对应FD N3-3,依次类推。
或者,也可以按照其他顺序将所述Z个PMI子带对应到所述N3个频域DFT向量中的前N3-1个频域DFT向量,例如,按照(x+d)mod(N3)确定每个频域DFT向量对应的PMI子带在配置的PMI子带中的顺序,其中x为频域DFT向量的索引,mod表示取模,d为正整数。
进一步地,所述终端设备可以确定没有PMI子带对应的频域DFT向量上的子带PMI。
例如,所述终端设备可以根据所述Z个PMI子带中的前Z-1个子带,确定最后一个子带PMI,例如对所述前Z-1个PMI子带(即PMI子带1~Z-1)上的PMI进行插值、外推、重复或补零处理,得到所述最后一个子带PMI,其他子带PMI(包括第一至第Z-1个子带PMI)分别为对应的PMI子带上的PMI,例如,第一个PMI子带上的PMI为第一个子带PMI,依次类推,这些子带PMI可以依次对应所述N3个频域DFT向量。
所述终端设备还可以根据第一个PMI子带(PMI子带0)和/或第二个PMI子带(PMI子带1),确定第一个子带CQI,以及根据最后一个PMI子带(PMI子带Z-1)和/或倒数第二个PMI子带(PMI子带Z-2),确定最后一个子带CQI。
具体地,所述终端设备可以根据第一个PMI子带和/或第二个PMI子带上的CQI确定所述第一个子带CQI,根据最后一个PMI子带和/或倒数第二个PMI子带上的CQI,确定最后一个子带CQI。
因此,在边缘子带对应的资源块(Resource Block,RB)数量较少时,可以通过重新定义N3来降低CSI的反馈开销。并且终端设备还可以对非边缘的PMI子带进行插值或外推等处理确定边缘PMI(即第一个子带PMI和最后一个子带PMI),有利于提升反馈精度。
在本申请另一些实施例中,所述终端设备也可以将边缘PMI子带联合起来对应相同的频域DFT向量,例如,前A个PMI子带和最后B个PMI子带联合起来,对应相同的频域DFT向量,其中,所述A为正整数,所述B为正整数。
例如,可以确定第一个频域DFT向量对应所述前A个PMI子带和所述最后B个PMI子带,或者可以确定最后一个DFT向量对应前A个PMI子带和最后B个PMI子带。进一步地,非边缘的PMI子带可以依次对应于其他频域DFT向量。
如图9所示,第一个PMI子带和最后一个PMI子带都对应FD0,第二个PMI子带 对应FD1,依次类推。
应理解,图4至图9所示示例中的RB的数量,PMI子带的数量以及频域DFT向量的数量等仅为示例,但本申请实施例并不限于此。
在本申请另一些实施例中,所述终端设备也可以在满足特定条件的情况下,确定不上报FD指示或SD指示,有利于降低反馈开销。
作为一个实施例,若所述终端设备选择上报的频域DFT向量的个数M为1或N3-1,确定所述CSI不包括所述FD指示,即不上报FD指示;
作为一个实施例,若2L等于天线端口数,确定所述CSI不包括所述SD指示,即不上报SD指示。
可选地,所述L为2或4,对应地,天线端口数为4或8。
在一些实施例中,网络设备可以给终端设备配置参数L,其中,当天线端口数P (CSI-RS)=4,L=2;当天线端口数P (CSI-RS)=8,12,16,24时,L∈{2,4};如果终端设备的能力支持L=6,那么当P (CSI-RS)=32时,L∈{2,4,6};当终端设备不支持L=6时,当天线端口数P (CSI-RS)=32时,L∈{2,4}(必要条件2L<=P (CSI-RS))。
在本申请另一些实施例中,所述终端设备可以根据β*2LM和第一值,确定所述K0,其中,所述β用于确定最大非零系数个数,其中,所述第一值是固定的参数,或者是预设的,或者由网络设备配置。
作为一个示例,所述终端设备可以确定β*2LM和第一值中的最大值为所述K0。这样,对于Rank=1的非零系数的个数至少为2,对于Rank2/3/4非零系数的个数至少为4。
在一些实施例中,所述第一值为2。上文结合图3至图9,详细描述了本申请的方法实施例,下文结合图10至图12,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。
图10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10所示,该终端设备400包括:
确定模块410,用于确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;以及根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。
可选地,在一些实施例中,所述确定模块410还用于::
所述终端设备根据配置的CQI子带的序号或PMI子带的序号,确定所述N3个频域DFT向量分别对应的PMI子带。
可选地,在一些实施例中,所述确定模块410具体用于:
根据所述配置的CQI子带的序号或PMI子带的序号,以及第一对应关系,确定所述N3个频域DFT向量分别对应的PMI子带,其中,所述第一对应关系为CQI子带或PMI子带和频域DFT向量的对应关系。
可选地,在一些实施例中,在所述第一对应关系中,第一频域DFT向量对应第一子带,第二频域DFT向量对应第二子带,其中,所述第一频域DFT向量的索引小于所述第二频域DFT向量的索引,所述第一子带的序号小于所述第二子带的序号,所述第一子带为第一CQI子带,所述第二子带为第二CQI子带,或者所述第一子带为第一PMI子带,所述第二子带为第二PMI子带。
可选地,在一些实施例中,所述确定模块410还用于:
根据PMI子带的数量、CQI子带的数量,CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3。
可选地,在一些实施例中,所述确定模块410具体用于:
若所述R为2,边缘子带的大小小于2个PMI子带的大小,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R-X,其中,所述N sb为CSI中上报的子带个数,所述X为第一个子带和/或最后一个子带中小于或等于半个配置的子带大小的个数。
可选地,在一些实施例中,所述频域DFT向量的个数N3等于所述PMI子带的数量Z,所述频域N3个DFT向量和所述Z个PMI子带一一对应。
可选地,在一些实施例中,所述确定模块410还用于:
若所述R为2,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R,其中,所述N sb为CSI中上报的子带个数。
可选地,在一些实施例中,所述确定模块410还用于:
根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系。
可选地,在一些实施例中,所述确定模块410具体用于:
若第一个CQI子带只对应一个PMI子带,确定所述Z个PMI子带中的第一个PMI子带对应所述N3个频域DFT向量中的第二个频域DFT向量,以及所述Z个PMI子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个DFT向量中的后N3-2 个频域DFT向量。
可选地,在一些实施例中,所述确定模块410还用于:
根据所述Z个PMI子带中的后Z-1个子带,确定第一个子带PMI。
可选地,在一些实施例中,所述确定模块410还用于:
若最后一个CQI子带只对应一个PMI子带,确定Z个PMI子带中的最后一个PMI子带对应所述N3个频域DFT向量中的倒数第二个频域DFT向量,以及所述Z个PMI子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个频域DFT向量中的前N3-2个频域DFT向量。
可选地,在一些实施例中,所述确定模块410还用于:
根据所述Z个PMI子带中的前Z-1个子带,确定最后一个子带PMI。
可选地,在一些实施例中,所述Z个子带中的前A个PMI子带和最后B个PMI子带对应相同的频域DFT向量,其中,所述A为正整数,所述B为正整数。
可选地,在一些实施例中,所述确定模块410还用于:
根据第一个PMI子带和/或第二个PMI子带,确定第一个子带CQI;和/或
根据最后一个PMI子带和/或倒数第二个PMI子带,确定最后一个子带CQI。
可选地,在一些实施例中,所述确定模块410还用于:
若所述终端设备选择上报的频域DFT向量的个数M为1或N3-1,确定所述CSI不包括所述FD指示;或
若2L等于天线端口数,确定所述CSI不包括所述SD指示。
可选地,在一些实施例中,所述L为2或4。
可选地,在一些实施例中,所述确定模块410还用于:
根据β*2LM和第一值,确定所述K0,其中,所述β用于确定最大非零系数个数,其中,所述第一值是预设的或网络设备配置的。
可选地,在一些实施例中,所述确定模块410具体用于:
确定β*2LM和第一值中的最大值为所述K0。
可选地,在一些实施例中,所述第一值为2。
可选地,在一些实施例中,上述确定模块可以是一个或多个处理器。
应理解,根据本申请实施例的终端设备400可对应于本申请方法实施例中的终端设备,并且终端设备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3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。
图11是本申请实施例提供的一种通信设备600示意性结构图。图11所示的通信设 备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。
可选地,如图11所示,通信设备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。
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。
可选地,如图11所示,通信设备600还可以包括收发器630,处理器610可以控制该收发器630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。
其中,收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备600具体可为本申请实施例的网络设备,并且该通信设备600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。
可选地,该通信设备600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600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。
图12是本申请实施例的芯片的示意性结构图。图12所示的芯片700包括处理器710,处理器710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。
可选地,如图12所示,芯片700还可以包括存储器720。其中,处理器710可以从存储器720中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
可选地,该芯片700还可以包括输入接口730。其中,处理器710可以控制该输入接口730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。
可选地,该芯片700还可以包括输出接口740。其中,处理器710可以控制该输出接口740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。
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。
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。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
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。
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,本文描述的系统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。
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。
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。
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。
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。
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。
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。
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。
本申请实施例还提供了一种计算机程序。
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。
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。
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。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,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系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
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。
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。
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。
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。

Claims (45)

  1. 一种无线通信的方法,其特征在于,包括:
    终端设备确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;
    所述终端设备根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据配置的CQI子带的序号或PMI子带的序号,确定所述N3个频域DFT向量分别对应的PMI子带。
  3. 根据权利要求2所述的方法,其特征在于,所述终端设备根据配置的CQI子带的序号或PMI子带的序号,确定所述N3个频域DFT向量分别对应的PMI子带,包括:
    所述终端设备根据所述配置的CQI子带的序号或PMI子带的序号,以及第一对应关系,确定所述N3个频域DFT向量分别对应的PMI子带,其中,所述第一对应关系为CQI子带或PMI子带和频域DFT向量的对应关系。
  4. 根据权利要求3所述的方法,其特征在于,在所述第一对应关系中,第一频域DFT向量对应第一子带,第二频域DFT向量对应第二子带,其中,所述第一频域DFT向量的索引小于所述第二频域DFT向量的索引,所述第一子带的序号小于所述第二子带的序号,所述第一子带为第一CQI子带,所述第二子带为第二CQI子带,或者所述第一子带为第一PMI子带,所述第二子带为第二PMI子带。
  5. 根据权利要求1所述的方法,其特征在于,所述终端设备确定信道状态信息CSI参数,包括:
    所述终端设备根据PMI子带的数量、CQI子带的数量,CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3。
  6. 根据权利要求5所述的方法,其特征在于,所述终端设备根据PMI子带的数量、CQI子带的数量以及CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3,包括:
    若所述R为2,边缘子带的大小小于2个PMI子带的大小,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R-X,其中,所述N sb为CSI中上报的子带个数,所述X为第一个子带和/或最后一个子 带中小于或等于半个配置的子带大小的个数。
  7. 根据权利要求5或6所述的方法,其特征在于,所述频域DFT向量的个数N3等于所述PMI子带的数量Z,所述频域N3个DFT向量和所述Z个PMI子带一一对应。
  8. 根据权利要求5或7所述的方法,其特征在于,所述终端设备根据PMI子带的数量、CQI子带的数量,CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3,包括:
    若所述R为2,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R,其中,所述N sb为CSI中上报的子带个数。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系。
  10. 根据权利要求9所述的方法,其特征在于,所述根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系,包括:
    若第一个CQI子带只对应一个PMI子带,确定所述Z个PMI子带中的第一个PMI子带对应所述N3个频域DFT向量中的第二个频域DFT向量,以及所述Z个PMI子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个DFT向量中的后N3-2个频域DFT向量。
  11. 根据权利要求10所述的方法,其特征在于,所述方法还包括:
    根据所述Z个PMI子带中的后Z-1个子带,确定第一个子带PMI。
  12. 根据权利要求9所述的方法,其特征在于,所述根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系,包括:
    若最后一个CQI子带只对应一个PMI子带,确定Z个PMI子带中的最后一个PMI子带对应所述N3个频域DFT向量中的倒数第二个频域DFT向量,以及所述Z个PMI子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个频域DFT向量中的前N3-2个频域DFT向量。
  13. 根据权利要求12所述的方法,其特征在于,所述方法还包括:
    根据所述Z个PMI子带中的前Z-1个子带,确定最后一个子带PMI。
  14. 根据权利要求9所述的方法,其特征在于,所述Z个子带中的前A个PMI子带和最后B个PMI子带对应相同的频域DFT向量,其中,所述A为正整数,所述B为正 整数。
  15. 根据权利要求9至14中任一项所述的方法,其特征在于,所述方法还包括:
    根据第一个PMI子带和/或第二个PMI子带,确定第一个子带CQI;和/或
    根据最后一个PMI子带和/或倒数第二个PMI子带,确定最后一个子带CQI。
  16. 根据权利要求1至15中任一项所述的方法,其特征在于,所述终端设备根据所述CSI参数,确定CSI,包括:
    若所述终端设备选择上报的频域DFT向量的个数M为1或N3-1,确定所述CSI不包括所述FD指示;或
    若2L等于天线端口数,确定所述CSI不包括所述SD指示。
  17. 根据权利要求16所述的方法,其特征在于,所述L为2或4。
  18. 根据权利要求1至17中任一项所述的方法,其特征在于,所述终端设备确定信道状态信息CSI参数,包括:根据β*2LM和第一值,确定所述K0,其中,所述β用于确定最大非零系数个数,其中,所述第一值是预设的或网络设备配置的。
  19. 根据权利要求18所述的方法,其特征在于,所述根据β*2LM和第一值,确定所述K0,包括:确定β*2LM和第一值中的最大值为所述K0。
  20. 根据权利要求18或19所述的方法,其特征在于,所述第一值为2。
  21. 一种终端设备,其特征在于,包括:
    确定模块,用于确定信道状态信息CSI参数,所述CSI参数包括以下中的至少一项:频域离散傅里叶变换DFT向量的个数N3,信道质量指示CQI子带大小和预编码矩阵指示PMI子带大小的比值R,码本的加权系数矩阵中最大非零元素的个数K0,所述终端设备选择上报的空间域DFT向量的个数L,所述终端设备选择上报的频域DFT向量的个数M;以及根据所述CSI参数,确定向网络设备上报的CSI,所述CSI包括以下中的至少一项:最强系数指示SCI,空间SD指示和频域FD指示。
  22. 根据权利要求21所述的终端设备,其特征在于,所述确定模块还用于::
    所述终端设备根据配置的CQI子带的序号或PMI子带的序号,确定所述N3个频域DFT向量分别对应的PMI子带。
  23. 根据权利要求22所述的终端设备,其特征在于,所述确定模块具体用于:
    根据所述配置的CQI子带的序号或PMI子带的序号,以及第一对应关系,确定所述N3个频域DFT向量分别对应的PMI子带,其中,所述第一对应关系为CQI子带或PMI子带和频域DFT向量的对应关系。
  24. 根据权利要求23所述的终端设备,其特征在于,在所述第一对应关系中,第一 频域DFT向量对应第一子带,第二频域DFT向量对应第二子带,其中,所述第一频域DFT向量的索引小于所述第二频域DFT向量的索引,所述第一子带的序号小于所述第二子带的序号,所述第一子带为第一CQI子带,所述第二子带为第二CQI子带,或者所述第一子带为第一PMI子带,所述第二子带为第二PMI子带。
  25. 根据权利要求21所述的终端设备,其特征在于,所述确定模块还用于:
    根据PMI子带的数量、CQI子带的数量,CQI子带大小和PMI子带大小的比值R中的至少一项,确定所述频域DFT向量的个数N3。
  26. 根据权利要求25所述的终端设备,其特征在于,所述确定模块具体用于:
    若所述R为2,边缘子带的大小小于2个PMI子带的大小,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R-X,其中,所述N sb为CSI中上报的子带个数,所述X为第一个子带和/或最后一个子带中小于或等于半个配置的子带大小的个数。
  27. 根据权利要求25或26所述的终端设备,其特征在于,所述频域DFT向量的个数N3等于所述PMI子带的数量Z,所述频域N3个DFT向量和所述Z个PMI子带一一对应。
  28. 根据权利要求25或27所述的终端设备,其特征在于,所述确定模块还用于:
    若所述R为2,并且网络设备配置所述终端设备上报第一个子带和/或最后一个子带,确定所述频域DFT向量的个数N3=N sb×R,其中,所述N sb为CSI中上报的子带个数。
  29. 根据权利要求28所述的终端设备,其特征在于,所述确定模块还用于:
    根据边缘的CQI子带和PMI子带的对应关系,确定配置的Z个PMI子带中的每个PMI子带和所述N3个频域DFT向量的对应关系。
  30. 根据权利要求29所述的终端设备,其特征在于,所述确定模块具体用于:
    若第一个CQI子带只对应一个PMI子带,确定所述Z个PMI子带中的第一个PMI子带对应所述N3个频域DFT向量中的第二个频域DFT向量,以及所述Z个PMI子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个DFT向量中的后N3-2个频域DFT向量。
  31. 根据权利要求30所述的终端设备,其特征在于,所述确定模块还用于:
    根据所述Z个PMI子带中的后Z-1个子带,确定第一个子带PMI。
  32. 根据权利要求29所述的终端设备,其特征在于,所述确定模块还用于:
    若最后一个CQI子带只对应一个PMI子带,确定Z个PMI子带中的最后一个PMI子带对应所述N3个频域DFT向量中的倒数第二个频域DFT向量,以及所述Z个PMI 子带中的其他PMI子带按照PMI子带的序号大小依次对应所述N3个频域DFT向量中的前N3-2个频域DFT向量。
  33. 根据权利要求32所述的终端设备,其特征在于,所述确定模块还用于:
    根据所述Z个PMI子带中的前Z-1个子带,确定最后一个子带PMI。
  34. 根据权利要求29所述的终端设备,其特征在于,所述Z个子带中的前A个PMI子带和最后B个PMI子带对应相同的频域DFT向量,其中,所述A为正整数,所述B为正整数。
  35. 根据权利要求39至34中任一项所述的终端设备,其特征在于,所述确定模块还用于:根据第一个PMI子带和/或第二个PMI子带,确定第一个子带CQI;和/或
    根据最后一个PMI子带和/或倒数第二个PMI子带,确定最后一个子带CQI。
  36. 根据权利要求21至35中任一项所述的终端设备,其特征在于,所述确定模块还用于:若所述终端设备选择上报的频域DFT向量的个数M为1或N3-1,确定所述CSI不包括所述FD指示;或若2L等于天线端口数,确定所述CSI不包括所述SD指示。
  37. 根据权利要求36所述的终端设备,其特征在于,所述L为2或4。
  38. 根据权利要求21至37中任一项所述的终端设备,其特征在于,所述确定模块还用于:根据β*2LM和第一值,确定所述K0,其中,所述β用于确定最大非零系数个数,其中,所述第一值是预设的或网络设备配置的。
  39. 根据权利要求38所述的终端设备,其特征在于,所述确定模块具体用于:
    确定β*2LM和第一值中的最大值为所述K0。
  40. 根据权利要求38或39所述的终端设备,其特征在于,所述第一值为2。
  41. 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20中任一项所述的方法。
  42. 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20中任一项所述的方法。
  43. 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20中任一项所述的方法。
  44. 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20中任一项所述的方法。
  45. 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20中任一项所述的方法。
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