WO2022047679A1 - Csi上报及接收方法、装置、终端设备、网络设备 - Google Patents

Csi上报及接收方法、装置、终端设备、网络设备 Download PDF

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Publication number
WO2022047679A1
WO2022047679A1 PCT/CN2020/113101 CN2020113101W WO2022047679A1 WO 2022047679 A1 WO2022047679 A1 WO 2022047679A1 CN 2020113101 W CN2020113101 W CN 2020113101W WO 2022047679 A1 WO2022047679 A1 WO 2022047679A1
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Prior art keywords
csi
information
csi part
value
pmi
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PCT/CN2020/113101
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English (en)
French (fr)
Inventor
陈文洪
方昀
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to KR1020237010209A priority Critical patent/KR20230061420A/ko
Priority to PCT/CN2020/113101 priority patent/WO2022047679A1/zh
Priority to JP2023514484A priority patent/JP7615307B2/ja
Priority to CN202080103620.1A priority patent/CN116018772A/zh
Priority to CN202310922488.2A priority patent/CN117155524B/zh
Priority to EP20951926.3A priority patent/EP4192087B1/en
Priority to ES20951926T priority patent/ES3027204T3/es
Publication of WO2022047679A1 publication Critical patent/WO2022047679A1/zh
Priority to US18/146,643 priority patent/US20230208492A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0675—Space-time coding characterised by the signaling
    • H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

Definitions

  • the embodiments of the present application relate to the field of mobile communication technologies, and in particular, to a method, apparatus, terminal device, and network device for reporting and receiving channel state information (Channel State Information, CSI).
  • CSI Channel State Information
  • the terminal device In order for the network device to perform reasonable scheduling, the terminal device needs to report the CSI, so that the network device can determine the scheduling information of the terminal device.
  • the terminal device performs CSI reporting based on the CSI reporting configuration configured by the network device.
  • the terminal device reports one CSI for each CSI reporting configuration.
  • One CSI can only be used to obtain one Transmission/Reception Point (TRP) under one transmission scheme. channel information.
  • TRP Transmission/Reception Point
  • the network device In order to support multiple transmission schemes, the network device needs to configure multiple CSI reporting configurations for the terminal equipment, so that the terminal equipment reports multiple CSIs based on different transmission schemes.
  • this reporting method requires a large amount of CSI reporting overhead, which affects the uplink transmission performance; in addition, a large CSI feedback delay is introduced, which affects the downlink transmission performance.
  • Embodiments of the present application provide a CSI reporting and receiving method, apparatus, terminal device, and network device.
  • the terminal device determines the second information in the second CSI part according to the first information in the first CSI part; wherein, the first information is hypothesis information or two rank indicator information (Rank Indicator, RI), the hypothesis The information is used to indicate the transmission assumption or measurement assumption on which the CSI reporting is based, the two RIs are obtained by measuring based on different measurement resources, and the second information includes precoding matrix indicator information (Precoding Matrix Indicator, PMI) and/or Channel Quality Indicator (CQI);
  • precoding matrix indicator information Precoding Matrix Indicator, PMI
  • CQI Channel Quality Indicator
  • the terminal equipment reports CSI, where the CSI includes the first CSI part and the second CSI part.
  • the network device receives the CSI reported by the terminal device, the CSI includes a first CSI part and a second CSI part, and the second information in the second CSI part is determined based on the first information in the first CSI part; wherein,
  • the first information is assumption information or two RIs, the assumption information is used to indicate a transmission assumption or a measurement assumption on which CSI reporting is based, the two RIs are obtained by measuring based on different measurement resources, and the second information Include PMI and/or CQI.
  • the CSI reporting apparatus provided by the embodiment of the present application is applied to terminal equipment, and the apparatus includes:
  • a determining unit configured to determine the second information in the second CSI part according to the first information in the first CSI part; wherein the first information is hypothesis information or 2 RIs, and the hypothesis information is used to indicate the CSI
  • the transmission assumption or measurement assumption based on the reporting, the two RIs are obtained by measuring based on different measurement resources, and the second information includes PMI and/or CQI;
  • a sending unit configured to report CSI, where the CSI includes the first CSI part and the second CSI part.
  • the CSI receiving apparatus provided by the embodiment of the present application is applied to network equipment, and the apparatus includes:
  • a receiving unit that receives CSI reported by a terminal device, where the CSI includes a first CSI part and a second CSI part, and the second information in the second CSI part is determined based on the first information in the first CSI part; wherein , the first information is assumption information or two RIs, the assumption information is used to indicate the transmission assumption or measurement assumption on which the CSI reporting is based, the two RIs are obtained by measuring based on different measurement resources, and the second The information includes PMI and/or CQI.
  • the terminal device provided by the embodiments of the present application includes 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 above-mentioned CSI reporting method.
  • the network device provided by the embodiments of the present application includes 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 above-mentioned CSI receiving method.
  • the chip provided by the embodiment of the present application is used to implement the above-mentioned CSI reporting method or CSI receiving method.
  • the chip includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the above-mentioned CSI reporting method or CSI receiving method.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned CSI reporting method or CSI receiving method.
  • the computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned CSI reporting method or CSI receiving method.
  • the computer program provided by the embodiment of the present application when running on a computer, enables the computer to execute the above-mentioned CSI reporting method or CSI receiving method.
  • the assumption information in the first CSI part or the two RIs indicate different transmission schemes
  • the terminal device reports the PMI and/or CQI corresponding to the indicated transmission scheme in the second CSI part, because the second CSI part Part of the overhead is flexibly determined according to the transmission scheme indicated by the first CSI part, and the terminal device only needs to report the CSI corresponding to the best transmission scheme, so that the communication between different transmission schemes can be supported with very low CSI feedback overhead. flexible switching.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2-1 is a schematic diagram 1 of downlink non-coherent transmission provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of different periodic CSI reporting modes provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a CSI reporting and receiving method provided by an embodiment of the present application.
  • FIG. 6-1 is a schematic diagram 1 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 6-2 is a schematic diagram 2 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 6-3 is a schematic diagram 3 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 8-1 is a schematic diagram 4 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 8-2 is a schematic diagram 5 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 8-3 is a schematic diagram 6 of the composition of the CSI provided by the embodiment of the present application.
  • FIG. 9 is a schematic structural composition diagram of a CSI reporting apparatus provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural composition diagram of a CSI receiving apparatus provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication systems or future communication systems etc.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 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 terminals located within the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the
  • the network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system.
  • the communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110 .
  • Terminal includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connections; and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/transmit a communication signal; and/or an Internet of Things (IoT) device.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN Wireless Local Area Networks
  • WLAN Wireless Local Area Networks
  • digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter
  • IoT Internet of Things
  • a terminal arranged to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal” or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radio telephones with data processing, facsimile, and data communication capabilities; may include radio telephones, pagers, Internet/Intranet PDAs with networking access, web browsers, memo pads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or others including radiotelephone transceivers electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • a terminal may refer to an access terminal, user equipment (UE), 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.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks or terminals in future evolved PLMNs, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal (Device to Device, D2D) communication may be performed between the terminals 120 .
  • the 5G communication system or the 5G network may also be referred to as a new radio (New Radio, NR) system or an NR network.
  • New Radio NR
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminals. This embodiment of the present application This is not limited.
  • 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 120 with a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here;
  • the device may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • downlink and uplink non-coherent transmission based on multiple TRPs is introduced.
  • the backhaul connection between TRPs may be ideal or non-ideal.
  • information exchange between TRPs can be carried out quickly and dynamically. Quasi-static exchange of information.
  • multiple TRPs can use different Physical Downlink Control Channel (PDCCH) to independently schedule multiple Physical Downlink Shared Channel (PDSCH) transmissions of a terminal device.
  • the TRP can also use the same PDCCH to schedule multiple PDSCH transmissions of a terminal device (only in the case of ideal backhaul), wherein the data of different TRPs use different transmission layers.
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the scheduled PDSCHs may be transmitted in the same time slot or in different time slots.
  • the terminal equipment needs to support the simultaneous reception of PDCCH and PDSCH from different TRPs.
  • the terminal equipment feeds back positive acknowledgment (Acknowledge, ACK)/negative acknowledgment (Non-Acknowledge, NACK) and CSI
  • the ACK/NACK and CSI can be fed back to different TRPs that transmit the corresponding PDSCH (as shown in Figure 2-1), It can also be combined and reported to one TRP (as shown in Figure 2-2).
  • the former can be applied to ideal backhaul and non-ideal backhaul scenarios, while the latter can only be used in ideal backhaul scenarios.
  • the downlink control information (Downlink Control Information, DCI) used for scheduling PDSCH transmitted by different TRPs can be carried by different control resource sets (Control Resource Set, CORESET), that is, the network device is configured with multiple CORESETs, and each TRP adopts The respective CORESETs are scheduled, that is, different TRPs can be distinguished through CORESETs.
  • the network device may configure an index for each CORESET, and different indexes correspond to different TRPs.
  • the CSI includes contents such as RI, PMI, CQI, etc., and can be used for scheduling of downlink transmission performed by respective TRPs.
  • the same DCI can schedule multiple transmission layers from different TRPs, see Figure 2-3.
  • the transport layers from different TRPs use demodulation reference signal (Demodulation Reference Signal, DMRS) ports in different CDM groups, and use different transmission configuration indicator (Transmission Configuration Indicator, TCI) states.
  • DMRS Demodulation Reference Signal
  • TCI Transmission Configuration Indicator
  • the network device needs to indicate DMRS ports from different CDM groups and TCI states corresponding to different CDM groups in one DCI, so as to support different DMRS ports for transmission using different beams.
  • HARQ-ACK feedback and CSI reporting can reuse mechanisms in existing protocols. This solution can only be used in ideal backhaul scenarios.
  • the terminal device In order for the network device to perform reasonable scheduling, the terminal device needs to feed back downlink CSI, so that the network device can determine the scheduling information of the terminal device, such as the number of transmission layers, precoding matrix, transmit beam, modulation and coding method, etc.
  • the CSI reporting of the terminal device is performed based on the CSI reporting configuration indicated by the network device, and the uplink resources used by the terminal device to report CSI and the downlink reference signal used for CSI measurement are both indicated by the CSI reporting configuration.
  • Each CSI reporting configuration corresponds to one CSI reporting, and each CSI reporting may include information such as CSI-RS Resource Indicator (CRI), RI, PMI, and CQI. in,
  • CRI is used to determine the CSI-RS resource currently used for channel measurement and the current interference measurement resource (Interference Measurement Resource, IMR) used for interference measurement from multiple CSI-RS resources; here, the CSI used for channel measurement -RS resources can also be referred to as channel measurement resources (Channel Measurement Resource, CMR);
  • IMR Interference Measurement Resource
  • RI is used to report the recommended number of transport layers
  • PMI is used to determine the recommended precoding matrix from the predefined codebook
  • ⁇ CQI is used to report the current channel quality and can be determined based on the Signal to Interference plus Noise Ratio (SINR) estimated by the terminal equipment.
  • SINR Signal to Interference plus Noise Ratio
  • the channel part in the SINR is determined based on the non-zero power channel state information reference signal (Channel State Information Reference Signal, CSI-RS) resource configured by the network device for channel measurement
  • the interference part is based on the network device configuration for interference measurement.
  • the channel state information interference measurement (Channel State Information Interference Measurement, CSI-IM) resources or non-zero power CSI-RS resources are determined.
  • the CQI is calculated based on the reported RI and PMI.
  • the periodic CSI is transmitted on the Physical Uplink Control Channel (PUCCH), and its CSI reporting configuration is configured by Radio Resource Control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the terminal device receives the corresponding RRC signaling configuration , and report CSI periodically.
  • Quasi-persistent CSI can be transmitted on PUCCH or Physical Uplink Shared Channel (PUSCH).
  • the CSI reporting configuration corresponding to CSI transmitted on PUCCH is pre-configured by RRC signaling and controlled by Media Access Control , MAC) layer signaling is activated or deactivated, and the CSI reporting configuration corresponding to the CSI transmitted on the PUSCH is dynamically indicated (activated or deactivated) through DCI signaling.
  • the terminal device After receiving the activation signaling configured by the network device, the terminal device periodically transmits CSI on the PUCCH or PUSCH until it stops reporting after receiving the deactivation signaling.
  • the CSI reporting configuration corresponding to aperiodic CSI reporting is also pre-configured through RRC signaling, some of which can be activated through MAC layer signaling, and then the CSI reporting configuration used for CSI reporting is indicated through CSI trigger signaling in DCI. After receiving the CSI trigger signaling, the terminal device reports the corresponding CSI on the scheduled PUSCH at one time according to the indicated CSI reporting configuration.
  • one CSI may be divided into two parts (parts).
  • the CSI information contained in CSI Part 1 (CSI Part 1) and CSI Part 2 (CSI Part 2) is shown in Table 1 below.
  • the number of bits of CSI part 1 is fixed, and is used to carry a small amount of important information such as RI and CQI; the number of bits of CSI part 2 is determined according to CSI part 1, and is used to carry more information such as PMI.
  • the terminal device When the code rate of the uplink channel carrying CSI (such as PUSCH or PUCCH) exceeds a certain value, the terminal device needs to discard some information in CSI part 2 to ensure the transmission performance of the uplink channel (at least the code rate is within a reasonable range). Specifically, the information of the CSI part 1 will not be discarded, and in the CSI part 2, the CSI part 2 corresponding to the CSI with the lower priority is discarded first according to the priority of the CSI report.
  • the priority of the CSI report is determined according to the periodicity of the CSI, the content of the CSI report, the carrier corresponding to the CSI report and the ID of the CSI report configuration.
  • the terminal device reports one CSI for each CSI reporting configuration, and the CSI is calculated based on the CMR and IMR configured by the network device.
  • One CSI can only be used to obtain the channel information of one TRP under one transmission scheme.
  • the network device needs to configure multiple CSI reporting configurations for the terminal device, so that the terminal device reports multiple CSIs based on different transmission schemes.
  • the terminal device obtains the CSI of TRP1 and TRP2 when a single TRP is scheduled based on CSI reporting configuration 1 and CSI reporting configuration 2 respectively (inter-TRP interference is not considered), and obtains simultaneous scheduling of TRP1 and TRP2 based on CSI reporting configuration 3 and CSI reporting configuration 4, respectively CSI of TRP1 and TRP2 (considering inter-TRP interference).
  • This reporting method requires a large amount of CSI reporting overhead, which affects the uplink transmission performance; in addition, a large CSI feedback delay is introduced, which affects the downlink transmission performance. To this end, the following technical solutions of the embodiments of the present application are proposed.
  • FIG. 4 is a schematic flowchart of a CSI reporting and receiving method provided by an embodiment of the present application. As shown in FIG. 4 , the method includes the following steps:
  • Step 401 The terminal device determines the second information in the second CSI part according to the first information in the first CSI part; wherein, the first information is hypothesis information or 2 RIs, and the hypothesis information is used to indicate CSI
  • the transmission assumption or measurement assumption based on the reporting, the two RIs are obtained by measuring based on different measurement resources, and the second information includes PMI and/or CQI.
  • Step 402 The terminal equipment reports CSI, where the CSI includes the first CSI part and the second CSI part.
  • the terminal device reports CSI, and accordingly, the network device receives the CSI reported by the terminal device, where the CSI includes a first CSI part and a second CSI part.
  • the network device may be a base station, such as a gNB.
  • the second information in the second CSI part is determined based on the first information in the first CSI part.
  • the terminal device determines the second information in the second CSI part according to the first information in the first CSI part; wherein, the first information is hypothesis information or two RIs, and the hypothesis information is used to indicate CSI
  • the transmission assumption or measurement assumption based on the reporting, the two RIs are obtained by measuring based on different measurement resources, and the second information includes PMI and/or CQI.
  • the CSI consists of CSI part 1 (ie, the first CSI part) and CSI part 2 (ie, the second CSI part), and the terminal device is based on the assumption information in the CSI part 1 constituting the CSI or according to the information contained in the CSI part 1
  • the values of the two RIs are determined to determine the PMI and/or CQI included in the CSI part 2 that constitutes the CSI.
  • the assumption information is used to indicate a transmission assumption or a measurement assumption on which the CSI reporting is based.
  • the assumption information is used to indicate the transmission assumption on which the CSI reporting is based. Specifically, the assumption information is used to indicate whether the CSI reporting is based on a transmission assumption of a single TRP or a transmission assumption based on multiple TRPs.
  • the hypothesis information may also be referred to as transmission hypothesis information.
  • the assumption information is used to indicate a measurement assumption on which the CSI reporting is based. Specifically, the assumption information is used to indicate whether the CSI reporting is based on a measurement assumption of a single measurement resource or a measurement assumption based on multiple measurement resources.
  • the hypothesis information may also be referred to as measurement hypothesis information.
  • the measurement resources may also be referred to as CSI measurement resources.
  • the measurement resources include CMR and/or IMR.
  • a measurement resource includes a CMR and an IMR.
  • a measurement resource includes a CMR.
  • a measurement resource includes an IMR.
  • the first information is hypothetical information or two RIs, and the following describes the technical solutions of the embodiments of the present application by combining different implementations of the first information.
  • the first information is hypothetical information
  • the terminal device determines the PMI and/or CQI in the second CSI part according to the assumption information in the first CSI part.
  • the terminal device determines that the second CSI part includes one PMI.
  • the first value of the assumption information corresponds to a transmission assumption of a single TRP or a measurement assumption of a single measurement resource.
  • the second CSI part includes one PMI.
  • all the information in the CSI is obtained by measurement based on a single measurement resource.
  • all the information in the CSI is obtained by measurement based on measurement resource 1.
  • the terminal device determines that the second CSI part includes 2 PMIs and k CQIs, and the value of k is 0 or 1.
  • the second value is different from the first value.
  • the terminal device determines that the second CSI part includes 2 PMIs and k CQIs.
  • the second value of the assumption information corresponds to transmission assumptions of multiple TRPs or measurement assumptions of multiple measurement resources.
  • the second CSI part includes 2 PMIs and k CQIs.
  • the two PMIs are obtained by measurement based on different measurement resources.
  • the first PMI of the two PMIs is obtained by measurement based on measurement resource 1
  • the second PMI of the two PMIs is obtained by measurement based on measurement resource 2.
  • the CQI included in the first CSI part is calculated based on the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI in the two PMIs, and the second CSI part The CQI included in the CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is determined according to the CSI reporting configuration corresponding to the CSI, or the number of CORESET group indexes of the control resource set configured by the network device, or the value of the assumption information.
  • the second CSI part includes one RI, and the RI and the RI included in the first CSI part are based on different The measurement resources are measured.
  • the RI included in the first CSI part is obtained by measurement based on measurement resource 1
  • the RI included in the second CSI part is obtained by measurement based on measurement resource 2.
  • the sum of the RI included in the second CSI part and the RI included in the first CSI part is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the second CSI part includes one CRI, and the CRI and the CRI included in the first CSI part are based on different The measurement resource set of .
  • the CRI included in the first CSI part is measured and obtained based on measurement resource set 1
  • the CRI included in the second CSI part is measured and obtained based on measurement resource set 2.
  • the first value is 0, and the second value is 1 or 2.
  • B1) in the above scheme can be implemented alone, or can be implemented in combination with B2) and/or B3).
  • the code rate of the PUSCH or PUCCH carrying the second CSI part needs to be less than or equal to a threshold value (referred to as the first threshold value). If the code rate exceeds the first threshold value, the terminal device discards at least one piece of information in the plurality of pieces of information according to the priority order of the pieces of information in the second CSI part, wherein the discarded piece of information
  • the priority corresponding to the information is lower than the priority corresponding to the information not to be discarded, that is, the information with the lower priority is discarded first, until the code rate of the PUSCH or PUCCH carrying the second CSI part needs to be less than or equal to the first threshold value until.
  • the priority of the first PMI in the second CSI part is higher than the priority of other information in the second CSI part, and the first PMI has a corresponding relationship with the RI in the first CSI part .
  • the priority of the PMI corresponding to the RI in the first CSI part in the second CSI part is higher than the priority of other information in the second CSI part.
  • the first information is 2 RIs
  • the terminal device determines the PMI and/or CQI in the second CSI part according to the values of the two RIs in the first CSI part.
  • the two RIs are obtained by measurement based on different measurement resources.
  • the first RI of the two RIs is obtained by measurement based on measurement resource 1
  • the second RI of the two RIs is obtained by measurement based on measurement resource 2.
  • the sum of the two RIs is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the terminal device determines that the second CSI part includes one PMI.
  • the value of the first RI in the two RIs is 0 and the value of the second RI is not 0, which corresponds to the transmission assumption of a single TRP or the measurement assumption of a single measurement resource.
  • the second RI The CSI part contains 1 PMI.
  • the PMI corresponds to the second RI (ie, a non-zero RI).
  • the PMI and CQI included in the CSI are both calculated and obtained based on the second RI.
  • the terminal device determines that the second CSI part includes two PMIs and k CQIs, and the value of k is 0 or 1, wherein the first PMI of the 2 PMIs corresponds to the first RI, and the second PMI of the 2 PMIs corresponds to the second RI.
  • the values of the first RI and the second RI in the two RIs are both greater than 0, which correspond to transmission assumptions of multiple TRPs or measurement assumptions of multiple measurement resources.
  • the second CSI part includes 2 PMIs and k CQIs.
  • the CQI included in the first CSI part is calculated based on the two RIs and the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI in the two PMIs, and the second CSI part The CQI included in the CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is based on the CSI reporting configuration corresponding to the CSI or the number of CORESET group indexes configured by the network device.
  • the first CSI part or the second CSI part further includes 2 CRIs, and the 2 CRIs are obtained by measurement based on different measurement resource sets. For example, one CRI is obtained by measurement based on measurement resource set 1, and another CRI is obtained by measurement based on measurement resource set 2.
  • the code rate of the PUSCH or PUCCH carrying the second CSI part needs to be less than or equal to a threshold value (referred to as the first threshold value). If the code rate exceeds the first threshold value, the terminal device discards at least one piece of information in the plurality of pieces of information according to the priority order of the pieces of information in the second CSI part, wherein the discarded piece of information
  • the priority corresponding to the information is lower than the priority corresponding to the information not to be discarded, that is, the information with the lower priority is discarded first, until the code rate of the PUSCH or PUCCH carrying the second CSI part needs to be less than or equal to the first threshold value until.
  • the priority of the first PMI in the second CSI part is higher than the priority of other information in the second CSI part, the first PMI and the two RIs included in the first CSI part
  • the first RI in has a corresponding relationship.
  • the priority of the PMI (ie, the first PMI) corresponding to the first RI among the 2 RIs included in the first CSI part in the second CSI part is higher than the priority of other information in the second CSI part.
  • the terminal device determines, according to the assumption information in the first CSI part constituting the CSI or according to the values of the two RIs included in the first CSI part, that the second CSI part constituting the CSI contains PMI and/or CQI, so as to report CSI.
  • different transmission schemes can be indicated through the first CSI part, and the terminal device can report the PMI and/or CQI corresponding to the indicated transmission scheme in the second CSI part, so that the transmission scheme can be transmitted through a very low
  • the CSI feedback overhead supports flexible switching between different transmission schemes.
  • the network device in the following application example may be a base station, such as a gNB.
  • the CSI reporting method of this application example includes the following processes:
  • Step 501 The network device configures two sets of CSI measurement resources in the CSI reporting configuration.
  • each group of CSI measurement resources correspond to two coordinated TRPs, respectively, and each group of CSI measurement resources includes at least one measurement resource (ie, at least one CMR and at least one IMR) corresponding to one TRP.
  • Step 502 The terminal device performs measurement based on the two sets of CSI measurement resources, determines assumption information, and reports the assumption information through the CSI part 1 constituting the CSI.
  • the assumption information is used to indicate whether the CSI reporting is based on the transmission assumption of a single TRP or the transmission assumption based on multiple TRPs, or the assumption information is used to indicate whether the CSI reporting is based on the measurement assumption of a single measurement resource or based on multiple TRPs
  • the measurement assumptions for the measurement resource In an optional manner, if it is a transmission assumption based on a single TRP or a measurement assumption based on a single measurement resource, the CSI reported by the terminal equipment only needs to include uplink control information corresponding to one TRP or one measurement resource.
  • the CSI reported by the terminal device includes uplink control information corresponding to multiple TRPs or multiple measurement resources, Or it includes uplink control information obtained by joint measurement of multiple TRPs or multiple measurement resources.
  • the terminal device may determine the hypothesis information in the following manner: the terminal device may perform CSI measurement based on the transmission hypothesis of a single TRP and the transmission hypothesis of two TRPs, so as to select the better transmission hypothesis and determine the corresponding transmission hypothesis. Assumption information (referred to as hypothetical information for short). Alternatively, the terminal may perform CSI measurement separately based on the measurement hypothesis of a single measurement resource and the measurement hypothesis of two measurement resources, so as to select a better measurement hypothesis among them, and determine corresponding measurement hypothesis information (abbreviated as hypothesis information).
  • the CSI measurement refers to measuring the CMR and/or the IMR. Measurement resources can be replaced by CMR and IMR, or by CMR, or by IMR.
  • Step 503 The terminal device determines the PMI and/or CQI included in the CSI part 2 constituting the CSI according to the assumption information in the CSI part 1, where the assumption information is used to indicate the transmission assumption or measurement on which the CSI reporting is based Suppose.
  • TAI Transmission Assumption Information
  • the CSI part 2 when the value of the TAI in the CSI part 1 is the first value, the CSI part 2 only contains one PMI.
  • the first value is zero.
  • the reporting of CSI is based on the transmission assumption of a single TRP or the reporting of CSI is based on the measurement assumption of a single measurement resource.
  • all the information in the CSI is measured based on the first group of CSI measurement resources (ie, CMR0 and IMR0).
  • the terminal device can reuse the existing CSI reporting mechanism to report CSI.
  • CSI part 1 may contain RI and CQI
  • CSI part 2 may contain one PMI.
  • the CSI part 2 may further include another CQI, wherein the CQI in the CSI part 1 corresponds to the first symbol, and the CQI in the CSI part 2 corresponds to the second code.
  • the second value is 1 or 2.
  • the reporting of CSI is based on transmission assumptions based on multiple TRPs or the reporting of CSI is based on measurement assumptions on multiple measurement resources.
  • the information in the CSI is obtained based on the measurement of the first group of CSI measurement resources (ie, CMR0 and IMR0) and the second group of CSI measurement resources (ie, CMR1 and IMR1).
  • the terminal equipment needs to report uplink control information corresponding to two TRPs or two measurement resources.
  • the value of k may be determined according to the CSI reporting configuration corresponding to the CSI, or the number of CORESET group indexes configured by the network device, or the value of TAI.
  • the content included in the CSI part 1 and the CSI part 2 and the calculation method of the content are described below in conjunction with different values of k.
  • the CSI reporting is based on the transmission assumption of multiple TRPs scheduled by a single DCI (that is, two TRPs are jointly scheduled), and the CQI included in the CSI part 1 is calculated based on the two PMIs, CQI is not included in CSI part 2.
  • the CSI part 2 may further include one RI, and the RI and the RI included in the CSI part 1 are measured and obtained based on different measurement resources.
  • the CSI part 1 includes TAI, RIO and CQI0
  • the CSI part 2 includes RI1, PMI0 and PMI1, where RIO and PMI0 are based on a set of CMR and IMR (ie CMR0 and IMR0) are measured, RI1 and PMI2 are measured based on another set of CMR and IMR (ie CMR1 and IMR1).
  • the CQI0 is calculated based on the channel estimated by the terminal device and PMI0 and PMI1, that is, the CQI0 is the CQI estimated jointly based on the channel measurement results of the two TRPs.
  • the CSI part 2 may further include one CRI, and the The CRI and the CRI included in the CSI part 1 are measured based on different sets of measurement resources.
  • the CSI part 1 includes CRI0
  • the CSI part 2 includes CRI1, wherein CMR0 and IMR0 are a set of CMRs and IMRs corresponding to the CRI0, and CMR1 and IMR1 are a set of CMRs and IMRs corresponding to the CRI1.
  • the reporting of CSI is based on the transmission assumption of multiple TRPs scheduled by multi-DCI (that is, two TRPs are scheduled independently), and the CQI included in CSI part 2 and the CQI included in CSI part 1 are based on the The above 2 PMIs are calculated.
  • the CSI part 2 may further include 1 RI, the RI and the RI included in the CSI part 1 are measured based on different measurement resources, and the 2 PMIs are based on the RI and the RI in the CSI part 1 respectively. The RI in the CSI part 2 is obtained.
  • the CSI part 2 may further include one CRI, and the The CRI and the CRI included in the CSI part 1 are measured based on different sets of measurement resources.
  • a set of CSI measurement resources includes multiple CMRs and multiple IMRs, and the terminal device needs to select one CMR and one IMR from them, and report the corresponding CRI. For example, as shown in Fig.
  • the CSI part 1 includes CRI0, RIO, CQI0 and TAI
  • the CSI part 2 includes CRI1, RI1, PMI0, PMI1 and CQI1, where RIO, PM0 and CQI0 are based on A set of CMR and IMR (ie CMR0 and IMR0) is measured (CMR0 and IMR0 are a set of CMR and IMR corresponding to the CRI0), RI1, PMI1 and CQI1 are obtained based on another set of CMR and IMR (ie CMR1 and IMR1) measurement ( CMR1 and IMR1 are a set of CMRs and IMRs corresponding to this CRI1).
  • the sum of the RIs in the CSI part 1 and the CSI part 2 cannot exceed the maximum number of transmission layers supported by the terminal device. Further, the sum of the RIs in the CSI part 1 and the CSI part 2 cannot exceed 4.
  • the terminal device or the network device may determine the number of information bits included in the CSI part 2 based on the assumption information, so as to generate or detect the CSI part 2 .
  • the assumption information on which CSI reporting is based corresponds to the number of PMI/CQI included in the CSI, so the assumption information may also be information on the number of PMIs or information on the number of CQIs, that is, the assumption information can be used for Indicates the number of PMIs or the number of CQIs contained in the CSI.
  • the terminal device indicates a transmission hypothesis or measurement hypothesis with the best current performance through the hypothesis information, and the network device can perform downlink transmission scheduling based on the transmission hypothesis or measurement hypothesis, thereby supporting communication between different transmission schemes.
  • Flexible switching since the terminal device only needs to report CSI corresponding to one transmission hypothesis or one measurement hypothesis, it does not need to report CSI corresponding to multiple transmission hypotheses or multiple measurement hypotheses, which can significantly reduce the overhead of CSI feedback.
  • the content included in the CSI part 2 is determined according to the assumption information in the CSI part 1, and the bit size and occupied resources of the CSI part 2 can be flexibly adjusted based on different feedback contents, thereby avoiding unnecessary waste of uplink resources.
  • Step 504 The terminal equipment reports CSI according to the determined CSI part 1 and CSI part 2.
  • CSI consists of CSI part 1 and CSI part 2.
  • CSI part 1 and CSI part 2 may be reported with reference to the methods in the related art.
  • the threshold value may be calculated by the terminal device or configured to the terminal device by the network device.
  • the priority of the PMI in CSI part 2 corresponding to the RI in CSI part 1 is higher than the priority of other information in CSI part 2 .
  • the CSI reporting method of this application example includes the following processes:
  • Step 701 The network device configures two sets of CSI measurement resources in the CSI reporting configuration.
  • each group of CSI measurement resources correspond to two coordinated TRPs, respectively, and each group of CSI measurement resources includes at least one measurement resource (ie, at least one CMR and at least one IMR) corresponding to one TRP.
  • Step 702 The terminal device performs measurement based on the two sets of CSI measurement resources, obtains two corresponding RIs, and reports the two RIs through the CSI part 1 constituting the CSI.
  • the first group of CSI measurement resources corresponds to the first RI of the two RIs
  • the second group of CSI measurement resources corresponds to the second RI of the two RIs.
  • Step 703 The terminal device determines the PMI and/or CQI included in the CSI part 2 that constitutes the CSI according to the values of the two RIs in the CSI part 1.
  • the uplink control information included in the CSI part 2 will be described below.
  • the CSI Only one PMI is included in part 2, and the PMI corresponds to the second RI (that is, the number of columns of the PMI is equal to the second RI, or the PMI is calculated based on the second RI).
  • the reporting of CSI is based on the transmission assumption of a single TRP or the reporting of CSI is based on the measurement assumption of a single measurement resource.
  • all the information in the CSI is measured based on the first group of CSI measurement resources (ie, CMR0 and IMR0).
  • CSI part 1 may contain 1 CQI.
  • the CSI part 2 may further include another CQI, wherein the CQI in the CSI part 1 corresponds to the first symbol, and the CQI in the CSI part 2 corresponds to the first symbol. Corresponds to the second codon I.
  • the two PMIs correspond to the two RIs respectively.
  • the two PMIs and the two RIs are respectively obtained by measurement based on the same measurement resource.
  • the first PMI of the two PMIs and the first RI of the two RIs are obtained based on the same measurement resource measurement (eg, the first group of CSI measurement resources), and the second PMI of the two PMIs
  • the second RI in the two RIs is obtained by measurement based on the same measurement resources (eg, the second group of CSI measurement resources).
  • the reporting of CSI is based on transmission assumptions of multiple TRPs or the reporting of CSI is based on measurement assumptions of multiple measurement resources.
  • the information in the CSI is obtained based on the measurement of the first group of CSI measurement resources (ie, CMR0 and IMR0) and the second group of CSI measurement resources (ie, CMR1 and IMR1).
  • the terminal equipment needs to report uplink control information corresponding to two TRPs or two measurement resources.
  • the value of k may be based on the CSI reporting configuration corresponding to the CSI or the number of CORESET group indexes configured by the network device.
  • the content included in the CSI part 1 and the CSI part 2 and the calculation method of the content are described below in conjunction with different values of k.
  • the reporting of CSI is based on the transmission assumption of multiple TRPs scheduled by a single DCI (that is, two TRPs are jointly scheduled), and the CQI included in CSI part 1 is based on the two RIs and the 2 PMIs are calculated, and CQI is not included in CSI part 2.
  • the CSI part 1 includes RI0>0, RI1>0, and CQI0
  • the CSI part 2 includes PMI0 and PMI1, where RI0 and PMI1 are based on a set of CMR and IMR ( That is, CMR0 and IMR0) are measured, and RI1 and PMI1 are measured based on another set of CMRs and IMRs (ie, CMR1 and IMR1).
  • the CQI0 is calculated based on the channel estimated by the terminal device and PMI0 and PMI1, that is, the CQI0 is the CQI estimated jointly based on the channel measurement results of the two TRPs.
  • the CSI part 1 may further include 2 CRIs, and the The two CRIs are measured based on different sets of measurement resources.
  • the CSI part 1 further includes CRI0 and CRI1, wherein CMR0 and IMR0 are a group of CMRs and IMRs corresponding to the CRI0, and CMR1 and IMR1 are a group of CMRs and IMRs corresponding to the CRI1.
  • the reporting of CSI is based on the transmission assumption of multiple TRPs scheduled by multi-DCI (that is, two TRPs are scheduled independently), and the CQI included in CSI part 2 and the CQI included in CSI part 1 are based on the The above 2 PMIs are calculated.
  • the CSI may further include two CRIs, and the two The CRI is measured based on different sets of measurement resources.
  • a set of CSI measurement resources includes multiple CMRs and multiple IMRs, and the terminal device needs to select one CMR and one IMR from them, and report the corresponding CRI.
  • the two sets of CSI measurement resources correspond to two CRIs, and the two CRIs may both be in CSI part 1, or both may be in CSI part 2, or one in CSI part 1 and the other in CSI part 2.
  • the CSI part 1 includes CRI0, CRI1, RI0>0, RI1>0, and CQI0
  • the CSI part 2 includes PMI0, PMI1, and CQI1, where RI0, PMI0 and CQI0 is measured based on a set of CMR and IMR (ie CMR0 and IMR0)
  • CMR0 and IMR0 are a set of CMR and IMR corresponding to the CRI0
  • RI1, PMI1 and CQI1 are measured based on another set of CMR and IMR (ie CMR1 and IMR1)
  • Obtain CMR1 and IMR1 are a set of CMRs and IMRs corresponding to the CRI1).
  • the sum of the two RIs cannot exceed the maximum number of transmission layers supported by the terminal device. Further, the sum of the two RIs cannot exceed 4.
  • the terminal device or the network device may determine the number of information bits included in the CSI part 2 based on the values of the two RIs, so as to generate or detect the CSI part 2.
  • the terminal device indicates different transmission schemes (equivalent to transmission assumptions or measurement assumptions) through the values of two RIs, and the network device may perform downlink transmission based on the transmission schemes corresponding to the values of two RIs scheduling, thereby supporting flexible switching between different transmission schemes.
  • the terminal device since the terminal device only needs to report the CSI corresponding to the best one transmission hypothesis, and does not need to report the CSI corresponding to multiple transmission hypotheses, the overhead of CSI feedback can be significantly reduced.
  • the content contained in CSI part 2 is determined according to the RI value in CSI part 1, and the bit size and occupied resources of CSI part 2 can be flexibly adjusted based on different feedback contents, thereby avoiding unnecessary waste of uplink resources.
  • Step 704 The terminal equipment reports the CSI according to the determined CSI part 1 and CSI part 2.
  • CSI consists of CSI part 1 and CSI part 2.
  • CSI part 1 and CSI part 2 may be reported with reference to the methods in the related art.
  • the threshold value may be calculated by the terminal device or configured to the terminal device by the network device.
  • the priority of the PMI corresponding to the first RI in CSI part 1 in CSI part 2 is higher than the priority of other information in CSI part 2 .
  • FIG. 9 is a schematic structural diagram of a CSI reporting apparatus provided by an embodiment of the present application, which is applied to terminal equipment. As shown in FIG. 9 , the CSI reporting apparatus includes:
  • the determining unit 901 is configured to determine the second information in the second CSI part according to the first information in the first CSI part; wherein, the first information is hypothesis information or 2 RIs, and the hypothesis information is used to indicate The transmission assumption or measurement assumption on which the CSI reporting is based, the two RIs are obtained by measuring based on different measurement resources, and the second information includes PMI and/or CQI;
  • a sending unit 902 configured to report CSI, where the CSI includes the first CSI part and the second CSI part.
  • the assumption information is used to indicate whether the CSI reporting is based on the transmission assumption of a single TRP or the transmission assumption based on multiple TRPs, or is used to indicate whether the CSI reporting is based on the measurement assumption of a single measurement resource or based on multiple TRPs.
  • a measurement hypothesis for a measurement resource is used to indicate whether the CSI reporting is based on the transmission assumption of a single TRP or the transmission assumption based on multiple TRPs.
  • the first information is hypothesis information
  • the determining unit 901 is configured to determine that the second CSI part contains 1 PMI when the assumption information is a first value; in a case where the assumption information is a second value Next, it is determined that the second CSI part includes 2 PMIs and k CQIs, and the value of k is 0 or 1.
  • the value of the assumption information is the first value
  • all the information in the CSI is measured and obtained based on a single measurement resource.
  • the two PMIs are obtained by measurement based on different measurement resources.
  • the CQI included in the first CSI part is calculated based on the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI of the two PMIs, and the second CSI part is The included CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is determined according to the CSI reporting configuration corresponding to the CSI, or the number of CORESET group indexes configured by the network device, or the value of the assumption information.
  • the second CSI part when the value of the assumption information is a second value, the second CSI part includes one RI, and the RI and the RI included in the first CSI part are based on different The measurement resource is measured.
  • the sum of the RI included in the second CSI part and the RI included in the first CSI part is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the second CSI part when the value of the assumption information is a second value, the second CSI part includes one CRI, and the CRI and the CRI included in the first CSI part are based on different CRIs.
  • the measurement resource set is measured.
  • the first information is 2 RIs
  • the determining unit 901 is configured to determine that the second CSI part includes one PMI if the value of the first RI in the two RIs is 0 and the value of the second RI is not 0.
  • both the PMI and the CQI included in the CSI are calculated based on the second RI.
  • the first information is 2 RIs
  • the determining unit 901 is configured to, if the values of the first RI and the second RI in the two RIs are both greater than 0, determine that the second CSI part includes two PMIs and k CQIs, and the value of k is The value is 0 or 1, where the first PMI of the 2 PMIs corresponds to the first RI, and the second PMI of the 2 PMIs corresponds to the second RI.
  • the CQI included in the first CSI part is calculated based on the two RIs and the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI of the two PMIs, and the second CSI part is The included CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is based on the CSI reporting configuration corresponding to the CSI or the number of CORESET group indexes configured by the network device.
  • the first CSI part or the second CSI part includes 2 CRIs, and the 2 CRIs are obtained by measurement based on different measurement resource sets.
  • the sum of the two RIs is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the device further includes:
  • a processing unit (not shown in the figure), configured to, if the code rate of the PUSCH or PUCCH bearing the second CSI part exceeds the first threshold value, according to the priority of the multiple pieces of information in the second CSI part sequence, discarding at least one of the multiple pieces of information, wherein the priority corresponding to the discarded information is lower than the priority corresponding to the information that is not discarded;
  • the priority of the first PMI in the second CSI part is higher than the priority of other information in the second CSI part, and the first PMI has a corresponding relationship with the RI in the first CSI part .
  • the device further includes:
  • a processing unit configured to, if the code rate of the PUSCH or PUCCH bearing the second CSI part exceeds a first threshold value, perform the processing for the multiple pieces of information in the priority order of the multiple pieces of information in the second CSI part At least one piece of information in the information is discarded, wherein the priority corresponding to the discarded information is lower than the priority corresponding to the information that is not discarded;
  • the priority of the first PMI in the second CSI part is higher than the priority of other information in the second CSI part, the first PMI and the two RIs included in the first CSI part
  • the first RI in has a corresponding relationship.
  • the measurement resources include CMR and/or IMR.
  • FIG. 10 is a schematic structural diagram of a CSI receiving apparatus provided by an embodiment of the present application, which is applied to a network device. As shown in FIG. 10 , the CSI receiving apparatus includes:
  • a receiving unit 1001 receiving CSI reported by a terminal device, where the CSI includes a first CSI part and a second CSI part, and the second information in the second CSI part is determined based on the first information in the first CSI part;
  • the first information is assumption information or two RIs, the assumption information is used to indicate a transmission assumption or a measurement assumption on which CSI reporting is based, the two RIs are obtained by measuring based on different measurement resources, and the first
  • the second information includes PMI and/or CQI.
  • the assumption information is used to indicate whether the CSI reporting is based on the transmission assumption of a single TRP or the transmission assumption based on multiple TRPs, or is used to indicate whether the CSI reporting is based on the measurement assumption of a single measurement resource or based on multiple TRPs.
  • a measurement hypothesis for a measurement resource is used to indicate whether the CSI reporting is based on the transmission assumption of a single TRP or the transmission assumption based on multiple TRPs.
  • the first information is hypothesis information
  • the second CSI part includes 1 PMI
  • the second CSI part includes 2 PMIs and k CQIs, and the value of k is 0 or 1.
  • the value of the assumption information is the first value
  • all the information in the CSI is measured and obtained based on a single measurement resource.
  • the two PMIs are obtained by measurement based on different measurement resources.
  • the CQI included in the first CSI part is calculated based on the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI of the two PMIs, and the second CSI part is The included CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is determined according to the CSI reporting configuration corresponding to the CSI, or the number of CORESET group indexes of the control resource set configured by the network device, or the value of the assumption information.
  • the second CSI part when the value of the assumption information is a second value, the second CSI part includes one RI, and the RI and the RI included in the first CSI part are based on different The measurement resource is measured.
  • the sum of the RI included in the second CSI part and the RI included in the first CSI part is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the second CSI part when the value of the assumption information is a second value, the second CSI part includes one CRI, and the CRI and the CRI included in the first CSI part are based on different CRIs.
  • the measurement resource set is measured.
  • the first information is 2 RIs
  • the second CSI part includes 1 PMI.
  • both the PMI and the CQI included in the CSI are calculated based on the second RI.
  • the first information is 2 RIs
  • the second CSI part includes 2 PMIs and k CQIs, where k is 0 or 1, where the The first PMI of the 2 PMIs corresponds to the first RI, and the second PMI of the 2 PMIs corresponds to the second RI.
  • the CQI included in the first CSI part is calculated based on the two RIs and the two PMIs.
  • the CQI included in the first CSI part is calculated based on the first PMI of the two PMIs, and the second CSI part is The included CQI is calculated based on the second PMI of the two PMIs.
  • the value of k is based on the CSI reporting configuration corresponding to the CSI or the number of CORESET group indexes configured by the network device.
  • the first CSI part or the second CSI part includes 2 CRIs, and the 2 CRIs are obtained by measurement based on different measurement resource sets.
  • the sum of the two RIs is less than or equal to the maximum number of transmission layers supported by the terminal device.
  • the measurement resources include CMR and/or IMR.
  • FIG. 11 is a schematic structural diagram of a communication device 1100 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the methods in the embodiments of the present application.
  • the communication device 1100 may further include a memory 1120 .
  • the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in the embodiments of the present application.
  • the memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.
  • the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.
  • the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.
  • the transceiver 1130 may include a transmitter and a receiver.
  • the transceiver 1130 may further include an antenna, and the number of the antenna may be one or more.
  • the communication device 1100 may specifically be a network device in this embodiment of the present application, and the communication device 1100 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 1100 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 1100 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. 12 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from the memory 1220 to implement the methods in the embodiments of the present application, and optionally, further includes an input interface 1230 and an output interface 1240.
  • FIG. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in FIG. 13 , the communication system 1300 includes a terminal device 1310 and a network device 1320 .
  • the terminal device 1310 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 1320 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not 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 the components shown 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

本申请实施例提供一种CSI上报及接收方法、装置、终端设备、网络设备，该方法包括：终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI；所述终端设备进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。

Description

CSI上报及接收方法、装置、终端设备、网络设备 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种信道状态信息(Channel State Information，CSI)上报及接收方法、装置、终端设备、网络设备。
背景技术
为了网络设备能够进行合理的调度，终端设备需要上报CSI，以让网络设备确定终端设备的调度信息。终端设备基于网络设备配置的CSI上报配置进行CSI上报，终端设备针对每个CSI上报配置上报一个CSI，一个CSI只能用于获得一个传输接收点(Transmission/Reception Point，TRP)在一个传输方案下的信道信息。
为了支持多种传输方案，网络设备需要为终端设备配置多个CSI上报配置，使得终端设备上报基于不同传输方案下的多个CSI。然而，这种上报方式需要大量的CSI上报开销，从而影响了上行传输性能；此外，还会引入较大的CSI反馈时延，从而影响了下行传输性能。
发明内容
本申请实施例提供一种CSI上报及接收方法、装置、终端设备、网络设备。
本申请实施例提供的CSI上报方法，包括：
终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个秩指示信息(Rank Indicator，RI)，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括预编码矩阵指示信息(Precoding Matrix Indicator，PMI)和/或信道质量指示信息(Channel Quality Indicator，CQI)；
所述终端设备进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
本申请实施例提供的CSI接收方法，所述方法包括：
网络设备接收终端设备上报的CSI，所述CSI包括第一CSI部分和第二CSI部分，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
本申请实施例提供的CSI上报装置，应用于终端设备，所述装置包括：
确定单元，用于根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI；
发送单元，用于进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
本申请实施例提供的CSI接收装置，应用于网络设备，所述装置包括：
接收单元，接收终端设备上报的CSI，所述CSI包括第一CSI部分和第二CSI部分，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
本申请实施例提供的终端设备，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，执行上述的CSI上报方法。
本申请实施例提供的网络设备，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，执行上述的CSI接收方法。
本申请实施例提供的芯片，用于实现上述的CSI上报方法或者CSI接收方法法。
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 的设备执行上述的CSI上报方法或者CSI接收方法。
本申请实施例提供的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的CSI上报方法或者CSI接收方法。
本申请实施例提供的计算机程序产品，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的CSI上报方法或者CSI接收方法。
本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的CSI上报方法或者CSI接收方法。
通过上述技术方案，通过第一CSI部分中的假设信息或者2个RI指示不同的传输方案，终端设备在第二CSI部分中上报所指示的传输方案对应的PMI和/或CQI，由于第二CSI部分的开销是根据第一CSI部分指示的传输方案灵活确定的，且终端设备只需要上报最好的一种传输方案对应的CSI，从而可以通过很低的CSI反馈开销支持不同的传输方案之间的灵活切换。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本申请实施例提供的一种通信系统架构的示意性图；
图2-1是本申请实施例提供的下行非相干传输的示意图一；
图2-2是本申请实施例提供的下行非相干传输的示意图二；
图2-3是本申请实施例提供的下行非相干传输的示意图三；
图3是本申请实施例提供的不同周期性的CSI上报方式的示意图；
图4是本申请实施例提供的CSI上报及接收方法的流程示意图；
图5是应用示例一的CSI上报方法的流程示意图；
图6-1是本申请实施例提供的CSI的组成示意图一；
图6-2是本申请实施例提供的CSI的组成示意图二；
图6-3是本申请实施例提供的CSI的组成示意图三；
图7是应用示例二的CSI上报方法的流程示意图；
图8-1是本申请实施例提供的CSI的组成示意图四；
图8-2是本申请实施例提供的CSI的组成示意图五；
图8-3是本申请实施例提供的CSI的组成示意图六；
图9是本申请实施例提供的CSI上报装置的结构组成示意图；
图10是本申请实施例提供的CSI接收装置的结构组成示意图；
图11是本申请实施例提供的一种通信设备示意性结构图；
图12是本申请实施例的芯片的示意性结构图；
图13是本申请实施例提供的一种通信系统的示意性框图。
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：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)、系统、5G通信系统或未来的通信系统等。
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进行通信。可选地，该网络设备110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通信系统中的网络设备等。
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120。作为在此使用的“终端”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网络中的终端或者未来演进的PLMN中的终端等。
可选地，终端120之间可以进行终端直连(Device to Device，D2D)通信。
可选地，5G通信系统或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，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，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120，网络设备110和终端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。
为便于理解本申请实施例的技术方案，以下对本申请实施例相关的技术方案进行说明。
下行非相干传输
在NR系统中引入了基于多个TRP的下行和上行的非相干传输。其中，TRP之间的回程(backhaul)连接可以是理想的或者非理想的，理想的backhaul下TRP之间可以快速动态的进行信息交互，非理想的backhaul下由于时延较大TRP之间只能准静态的进行信息交互。在下行非相干传输中，多个TRP可以采用不同的物理下行控制信道(Physical Downlink Control Channel，PDCCH)独立调度一个终端设备的多个物理下行共享信道(Physical Downlink Shared Channel，PDSCH)传输，多个TRP也可以采用同一个PDCCH调度一个终端设备的多个PDSCH传输(只能用于理想backhaul的情况)，其中不同TRP的数据采用不同的传输层。
对于采用多个PDCCH调度的下行传输，所调度的PDSCH可以在相同的时隙或不同的时隙传输。终端设备需要支持同时接收来自不同TRP的PDCCH和PDSCH。终端设备反馈肯定确认(Acknowledge，ACK)/否定确认(Non-Acknowledge，NACK)和CSI时，可以将ACK/NACK和CSI各自反馈给传输相应PDSCH的不同TRP(如图2-1所示)，也可以合并上报给一个TRP(如图2-2所示)。前者可以应用于理想backhaul和非理想backhaul两种场景，后者只能用于理想backhaul的场景。其中，不同TRP传输的用于调度PDSCH的下行控制信息(Downlink Control Information，DCI)可以通过不同的控制资源集(Control Resource Set，CORESET)来承载，即网络设备配置多个CORESET，每个TRP采用各自的CORESET进行调度，即可以通过CORESET来区分不同的TRP。例如，网络设备可以为每个CORESET配置一个索引，不同的索引对应不同的TRP。终端设备反馈CSI时，需要分别反馈每个TRP各自对应的CSI。所述CSI包含RI，PMI，CQI等内容，可以用于各自TRP进行下行传输的调度。
对于采用单个PDCCH调度的多TRP下行传输，同一个DCI可以调度来自不同TRP的多个传输层，参照图2-3。其中，来自不同TRP的传输层采用不同CDM组中的解调参考信号(Demodulation Reference Signal，DMRS)端口，且采用不同的传输配置指示(Transmission Configuration Indicator，TCI)状态。网络设备需要在一个DCI中指示来自不同CDM组的DMRS端口，以及不同CDM组所分别对应的TCI状态，从而支持不同的DMRS端口采用不同的波束来传输。这种情况下，HARQ-ACK反馈和CSI上报可以重用现有协议中的机制。这种方案只能用于理想backhaul的场景。
下行CSI上报
为了网络设备能够进行合理的调度，终端设备需要反馈下行CSI，以让网络设备确定传输层数、预编码矩阵、发送波束、调制编码方式等终端设备的调度信息。具体的，终端设备的CSI上报基于网络设备指示的CSI上报配置进行，终端设备上报CSI所用的上行资源以及进行CSI测量所用的下行参考信号都是通过CSI上报配置指示。每个CSI上报配置对应一个CSI上报，每个CSI上报可以包含CSI-RS资源指示信息(CSI-RS Resource Indicator，CRI)，RI，PMI，CQI等信息。其中，
■CRI用于从多个CSI-RS资源中确定当前用于信道测量的CSI-RS资源，以及当前用于干扰测量的干扰测量资源(Interference Measurement Resource，IMR)；这里，用于信道测量的CSI-RS资源也可以称为信道测量资源(Channel Measurement Resource，CMR)；
■RI用于上报推荐的传输层数；
■PMI用于从预定义的码本中确定推荐的预编码矩阵；
■CQI用于上报当前的信道质量，可以基于终端设备估计的信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)确定。其中，SINR中的信道部分基于网络设备配置的用于信道测量的非零功率信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)资源确定，干扰部分基于网络设备配置的用于干扰测量的信道状态信息干扰测量(Channel State Information Interference Measurement，CSI-IM)资源或者非零功率CSI-RS资源确定。CQI基于上报的RI和PMI计算。
终端设备的CSI上报可以有三种上报方式：周期性CSI，准持续性CSI和非周期CSI。如图3所示。其中，周期性CSI在物理上行控制信道(Physical Uplink Control Channel，PUCCH)上传输，其CSI上报配置由无线资源控制(Radio Resource Control，RRC)信令配置，终端设备接收到相应RRC信令配置后，周期性地上报CSI。准持续性CSI可以在PUCCH或物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上传输，PUCCH上传输的CSI对应的CSI上报配置由RRC信令预配置，并由媒体接入控制(Media Access Control，MAC)层信令进行激活或去激活，PUSCH上传输的CSI对应的CSI上报配置通过DCI信令动态指示(激活或去激活)。终端设备接收到网络设备配置的激活信令后，在PUCCH或PUSCH上周期性传输CSI，直到接收到去激活信令后停止上报。非周期性的CSI上报对应的CSI上报配置也通过RRC信令预配置，可以通过MAC层信令激活其中的部分配置，再通过DCI中的CSI触发信令指示用于CSI上报的CSI上报配置。终端设备接收到CSI触发信令后，根据指示的CSI上报配置在所调度的PUSCH上一次性上报对应的CSI。
当一个CSI中承载的比特数较多时，为了优先传输重要的CSI信息，可以将一个CSI分成两个部分(part)。对于不同类型的码本，CSI部分1(CSI Part 1)和CSI部分2(CSI Part 2)包含的CSI信息如下表1所示。其中CSI部分1的比特数是固定的，用来携带RI，CQI等少量重要信息；CSI部分2的比特数根据CSI部分1确定，用来携带PMI等比特数较多的信息。当携带CSI的上行信道(如PUSCH或者PUCCH)的码率超过一定值时，终端设备需要丢弃一些CSI部分2中的信息来保证上行信道的传输性能(至少码率在合理范围内)。具体的，CSI部分1的信息不会被丢弃，CSI部分2中根据CSI上报的优先级先丢弃优先级较低的CSI对应的CSI部分2。其中，CSI上报的优先级根据CSI的周期性，CSI上报的内容，CSI上报对应的载波和CSI上报配置的ID判断。
Figure PCTCN2020113101-appb-000001
表1
终端设备针对每个CSI上报配置上报一个CSI，所述CSI基于网络设备配置的CMR和IMR计算得到。一个CSI只能用于获得一个TRP在一个传输方案下的信道信息。为了同时支持单TRP传输和多TRP的下行非相干传输，网络设备需要为终端设备配置多个CSI上报配置，使得终端设备上 报基于不同传输方案下的多个CSI。例如，终端设备基于CSI上报配置1和CSI上报配置2分别得到单个TRP调度时TRP1和TRP2的CSI(不考虑TRP间干扰)，基于CSI上报配置3和CSI上报配置4分别得到TRP1和TRP2同时调度时TRP1和TRP2的CSI(考虑TRP间干扰)。这种上报方式需要大量的CSI上报开销，从而影响了上行传输性能；此外，还会引入较大的CSI反馈时延，从而影响下行传输性能。为此，提出了本申请实施例的以下技术方案。
图4为本申请实施例提供的CSI上报及接收方法的流程示意图，如图4所示，所述方法包括以下步骤：
步骤401：终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
步骤402：所述终端设备进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
本申请实施例中，终端设备进行CSI的上报，相应地，网络设备接收终端设备上报的CSI，其中，所述CSI包括第一CSI部分和第二CSI部分。这里，可选地，所述网络设备可以是基站，如gNB。
本申请实施例中，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定。具体地，终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
在一个示例中，CSI由CSI部分1(即第一CSI部分)和CSI部分2(即第二CSI部分)组成，终端设备根据组成CSI的CSI部分1中的假设信息或者根据CSI部分1中包含的2个RI的取值，确定组成所述CSI的CSI部分2中包含的PMI和/或CQI。
上述方案中，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设。
在一可选方式中，所述假设信息用于指示CSI上报所基于的传输假设。具体地，所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设。这里，所述假设信息也可以称为传输假设信息。
在另一可选方式中，所述假设信息用于指示CSI上报所基于的测量假设。具体地，所述假设信息用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。这里，所述假设信息也可以称为测量假设信息。
上述方案中，所述测量资源也可以称为CSI测量资源。进一步，可选地，所述测量资源包括CMR和/或IMR。例如：一个测量资源包括一个CMR和一个IMR。例如：一个测量资源包括一个CMR。例如：一个测量资源包括一个IMR。
本申请实施例中，所述第一信息为假设信息或者2个RI，以下结合第一信息的不同实现方式对本申请实施例的技术方案分情况进行说明。
●所述第一信息为假设信息
终端设备根据第一CSI部分中的假设信息确定第二CSI部分中的PMI和/或CQI。
A)所述假设信息的取值为第一值的情况下，所述终端设备确定所述第二CSI部分包含1个PMI。
所述假设信息的取值为第一值对应于单个TRP的传输假设或者单个测量资源的测量假设，这种情况下，所述第二CSI部分包含1个PMI。
进一步，所述CSI中的所有信息基于单个测量资源进行测量得到。例如：CSI中的所有信息都是基于测量资源1测量得到。
B1)所述假设信息的取值为第二值的情况下，所述终端设备确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
这里，所述第二值与所述第一值不同。换句话说，所述假设信息的取值不为第一值的情况下，所述终端设备确定所述第二CSI部分包含2个PMI和k个CQI。
所述假设信息的取值为第二值对应于多个TRP的传输假设或者多个测量资源的测量假设，这种情况下，所述第二CSI部分包含2个PMI和k个CQI。
进一步，所述2个PMI基于不同的测量资源进行测量得到。例如：所述2个PMI中的第一PMI基于测量资源1测量得到，所述2个PMI中的第二PMI基于测量资源2测量得到。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
在另一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述 2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
上述方案中，可选地，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的控制资源集CORESET组索引的数量、或者所述假设信息的取值确定。例如，k的取值可以在所述CSI对应的CSI上报配置中指示。例如，当网络设备配置的CORESET组索引的数量为1时，k＝0；当网络设备配置的CORESET组索引的数量为2时，k＝1。例如，所述假设信息的取值为1时，k＝0；所述假设信息的取值为2时，k＝1。
B2)进一步，可选地，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。例如：第一CSI部分中包含的RI基于测量资源1进行测量得到，第二CSI部分中包含的RI基于测量资源2进行测量得到。
这里，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
B3)进一步，可选地，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。例如：第一CSI部分中包含的CRI基于测量资源集合1测量得到，第二CSI部分中包含的CRI基于测量资源集合2测量得到。
上述方案中，在一个示例中，所述第一值为0，所述第二值为1或2。
需要说明的是，上述方案中的B1)可以单独实施，也可以与B2)和/或B3)结合起来实施。
本申请实施例中，承载所述第二CSI部分的PUSCH或PUCCH的码率需要小于等于一个门限值(称为第一门限值)，若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则所述终端设备按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级，即先丢弃优先级较低的信息，直到承载所述第二CSI部分的PUSCH或PUCCH的码率需要小于等于第一门限值为止。
这里，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中的RI具有对应关系。换句话说，第二CSI部分中与第一CSI部分中的RI对应的PMI的优先级高于第二CSI部分中的其他信息的优先级。
●所述第一信息为2个RI
终端设备根据第一CSI部分中的2个RI的取值确定第二CSI部分中的PMI和/或CQI。
这里，所述2个RI基于不同的测量资源进行测量得到。例如：所述2个RI中的第一RI基于测量资源1进行测量得到，所述2个RI中的第二RI基于测量资源2进行测量得到。
这里，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
a)若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则所述终端设备确定所述第二CSI部分包含1个PMI。
所述2个RI中的第一RI的取值为0且第二RI的取值不为0，对应于单个TRP的传输假设或者单个测量资源的测量假设，这种情况下，所述第二CSI部分包含1个PMI。这里，所述PMI对应于第二RI(即非零RI)。
这里，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
b)若所述2个RI中的第一RI和第二RI的取值都大于0，则所述终端设备确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
所述2个RI中的第一RI和第二RI的取值都大于0，对应于多个TRP的传输假设或者多个测量资源的测量假设，这种情况下，所述第二CSI部分包含2个PMI和k个CQI。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
在另一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
上述方案中，可选地，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。例如，k的取值可以在所述CSI对应的CSI上报配置中指示。例如，当网络设备配置的CORESET组索引的数量为1时，k＝0；当网络设备配置的CORESET组索引的数量为 2时，k＝1。
进一步，可选地，所述第一CSI部分或所述第二CSI部分还包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。例如：1个CRI基于测量资源集合1进行测量得到，另一个CRI基于测量资源集合2进行测量得到。
本申请实施例中，承载所述第二CSI部分的PUSCH或PUCCH的码率需要小于等于一个门限值(称为第一门限值)，若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则所述终端设备按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级，即先丢弃优先级较低的信息，直到承载所述第二CSI部分的PUSCH或PUCCH的码率需要小于等于第一门限值为止。
这里，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中包含的2个RI中的第一RI具有对应关系。换句话说，第二CSI部分中与第一CSI部分包含的2个RI中第一RI对应的PMI(即第一PMI)的优先级高于第二CSI部分中的其他信息的优先级。
本申请实施例的技术方案，终端设备根据组成CSI的第一CSI部分中的假设信息或根据第一CSI部分中包含的2个RI的取值，确定组成所述CSI的第二CSI部分中包含的PMI和/或CQI，从而进行CSI的上报。采用本申请实施例的技术方案，可以通过第一CSI部分指示不同的传输方案，终端设备在第二CSI部分中可以上报所指示的传输方案对应的PMI和/或CQI，从而可以通过很低的CSI反馈开销支持不同的传输方案之间的灵活切换。
以下结合具体应用示例对本申请实施例的技术方案进行举例说明，需要说明的是，以下应用示例中的CSI部分1对应于本申请实施例中的第一CSI部分，CSI部分2对应于本申请实施例中的第二CSI部分，以下应用示例中的网络设备可以是基站，如gNB。
应用示例一
参照图5，本应用示例的CSI上报方法包括以下流程：
步骤501：网络设备在CSI上报配置中配置两组CSI测量资源。
这里，两组CSI测量资源分别对应协作的两个TRP，每组CSI测量资源包含一个TRP对应的至少一个测量资源(即至少一个CMR和至少一个IMR)。
步骤502：终端设备基于这两组CSI测量资源进行测量，并确定假设信息，并通过组成CSI的CSI部分1上报所述假设信息。
这里，所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，所述假设信息用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。在一可选方式中，如果是基于单个TRP的传输假设或者基于单个测量资源的测量假设，则终端设备上报的CSI中包含一个TRP或一个测量资源对应的上行控制信息即可。在另一可选方式中，如果是基于多个TRP的传输假设或者基于多个测量资源的测量假设，则终端设备上报的CSI中包含多个TRP或者多个测量资源各自对应的上行控制信息，或者包含多个TRP或多个测量资源进行联合测量得到的上行控制信息。
本应用示例中，终端设备可以通过以下方式确定假设信息：终端设备可以基于单个TRP的传输假设和两个TRP的传输假设分别进行CSI测量，从而选取其中较优的传输假设，并确定相应的传输假设信息(简称为假设信息)。或者，终端可以基于单个测量资源的测量假设和两个测量资源的测量假设分别进行CSI测量，从而选取其中较优的测量假设，并确定相应的测量假设信息(简称为假设信息)。
需要说明的是，CSI测量是指针对CMR和/或IMR进行测量。测量资源可以采用CMR和IMR进行替换，或者采用CMR进行替换，或者采用IMR进行替换。
步骤503：终端设备根据所述CSI部分1中的假设信息，确定组成所述CSI的CSI部分2中包含的PMI和/或CQI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设。
为便于描述，以下以假设信息为传输假设信息(Transmission Assumption Information，TAI)为例进行说明。以下对CSI部分2中包含的上行控制信息进行说明。
●在一种实施方式中，当CSI部分1中的TAI的取值为第一值时，CSI部分2中只包含1个PMI。
在一个示例中，第一值为0。此时，CSI的上报基于单个TRP的传输假设或者CSI的上报基于单个测量资源的测量假设。如图5-1所示，CSI中的全部信息都是基于第一组CSI测量资源(即CMR0和IMR0)测量得到。终端设备可以重用现有的CSI上报机制进行CSI的上报。
如图6-1所示，CSI部分1可以包含RI和CQI，CSI部分2可以包含1个PMI。
进一步，可选地，如果所述RI的取值大于4，则CSI部分2还可以包含另一个CQI，其中，CSI部分1中的CQI对应于第一个码子，CSI部分2中的CQI对应于第二个码子。
●在另一种实施方式中，当CSI部分1中的TAI的取值为第二值时，CSI部分2中包含2个PMI和k个CQI，k＝0或1。其中，所述2个PMI基于不同的测量资源测量得到。
在一个示例中，第二值为1或2。此时，CSI的上报基于基于多个TRP的传输假设或者CSI的上报基于多个测量资源的测量假设。如图6-2和图6-3所示，CSI中的信息基于第一组CSI测量资源(即CMR0和IMR0)和第二组CSI测量资源(即CMR1和IMR1)测量得到。终端设备需要上报两个TRP或两个测量资源对应的上行控制信息。
可选地，k的取值可以根据CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量、或者TAI的取值确定。例如，k的取值可以在CSI对应的CSI上报配置中指示。例如，当网络设备配置的CORESET组索引的数量为1时，k＝0；当网络设配置的CORESET组索引的数量为2时，k＝1。例如，当TAI的取值1时，k＝0；当TAI的取值为2时，k＝1。
以下结合k的不同取值情况，来说明CSI部分1和CSI部分2中包含的内容以及内容的计算方式。
情况一：k＝0
这里，当k＝0时，CSI的上报是基于单DCI调度的多个TRP的传输假设(即两个TRP联合调度)，此时CSI部分1中包含的CQI基于所述2个PMI计算得到，CSI部分2中不包含CQI。
进一步，所述CSI部分2中还可以包括1个RI，所述RI与CSI部分1中包含的RI基于不同的测量资源测量得到。
例如，如图6-2所示，所述CSI部分1中包含TAI、RI0和CQI0，所述CSI部分2中包含RI1、PMI0和PMI1，其中，RI0和PMI0基于一组CMR和IMR(即CMR0和IMR0)测量得到，RI1和PMI2基于另一组CMR和IMR(即CMR1和IMR1)测量得到。CQI0基于终端设备估计的信道以及PMI0和PMI1计算得到，即CQI0是基于两个TRP的信道测量结果联合估计的CQI。
需要说明的是，图6-2是假设网络设备配置的两组CSI测量资源均只包含一个CMR和一个IMR，此时终端设备不需要上报CRI。
进一步，可选地，在网络设配置的一组CSI测量资源中包含多个测量资源(如多个CMR和多个IMR)的情况下，所述CSI部分2还可以包括1个CRI，所述CRI与CSI部分1中包含的CRI基于不同的测量资源集合测量得到。例如，所述CSI部分1中包含CRI0，所述CSI部分2中包含CRI1，其中，CMR0和IMR0为该CRI0对应的一组CMR和IMR，CMR1和IMR1为该CRI1对应的一组CMR和IMR。
情况二：k＝1
这里，当k＝1时，CSI的上报是基于多DCI调度的多个TRP的传输假设(即两个TRP独立调度)，CSI部分2中包含的CQI与CSI部分1中包含的CQI分别基于所述2个PMI计算得到。
进一步，所述CSI部分2中还可以包括1个RI，所述RI与CSI部分1中包含的RI基于不同的测量资源测量得到，且所述2个PMI分别基于所述CSI部分1中RI和所述CSI部分2中的RI得到。
进一步，可选地，在网络设备配置的一组CSI测量资源中包含多个测量资源(如多个CMR和多个IMR)的情况下，所述CSI部分2还可以包括1个CRI，所述CRI与CSI部分1中包含的CRI基于不同的测量资源集合测量得到。这里，假设一组CSI测量资源中包含多个CMR和多个IMR，终端设备需要从中选择一个CMR和一个IMR，并上报相应的CRI。例如，如图6-3所示，所述CSI部分1中包含CRI0、RI0、CQI0和TAI，所述CSI部分2中包含CRI1、RI1、PMI0、PMI1和CQI1，其中，RI0、PM0和CQI0基于一组CMR和IMR(即CMR0和IMR0)测量得到(CMR0和IMR0为该CRI0对应的一组CMR和IMR)，RI1、PMI1和CQI1基于另一组CMR和IMR(即CMR1和IMR1)测量得到(CMR1和IMR1为该CRI1对应的一组CMR和IMR)。
在以上两种情况中，所述CSI部分1和所述CSI部分2中的RI的和不能超过终端设备支持的最大传输层数。进一步，所述CSI部分1和所述CSI部分2中的RI的和也不能超过4。
在一种实施方式中，终端设备或者网络设备可以基于所述假设信息，确定CSI部分2包含的信息比特数，从而进行所述CSI部分2的生成或者检测。
需要说明的是，CSI上报所基于的假设信息与CSI中包含的PMI/CQI的数量是对应的，因此所述假设信息也可以是PMI数量信息或者CQI数量信息，即所述假设信息可以用于指示所述CSI中包含的PMI数量或者CQI数量。
本申请实施例的技术方案，终端设备通过假设信息指示当前性能最好的一个传输假设或者测量 假设，网络设备可以基于该传输假设或者测量假设进行下行传输的调度，从而支持不同传输方案之间的灵活切换。同时，由于终端设备只需要上报一个传输假设或者一个测量假设对应的CSI，不需要上报多个传输假设或者多个测量假设对应的CSI，可以明显降低CSI反馈的开销。进一步的，根据CSI部分1中的假设信息确定CSI部分2中包含的内容，可以基于不同的反馈内容灵活调整CSI部分2的比特大小和占用资源，从而避免不必要的上行资源浪费。
步骤504：终端设备根据确定的CSI部分1和CSI部分2，进行CSI的上报。
这里，CSI由CSI部分1和CSI部分2组成。可选地，可以参照相关技术中的方法来上报CSI部分1和CSI部分2。
当承载所述CSI部分2的PUSCH或PUCCH的码率超过预设的门限值时，按照所述CSI部分2中的多个信息的优先级顺序，先丢弃优先级较低的信息。这里，所述门限值可以由终端设备计算得到或者由网络设备配置给终端设备。
在一可选方式中，CSI部分2中与CSI部分1中的RI对应的PMI的优先级高于CSI部分2中的其他信息的优先级。
应用示例二
参照图7，本应用示例的CSI上报方法包括以下流程：
步骤701：网络设备在CSI上报配置中配置两组CSI测量资源。
这里，两组CSI测量资源分别对应协作的两个TRP，每组CSI测量资源包含一个TRP对应的至少一个测量资源(即至少一个CMR和至少一个IMR)。
步骤702：终端设备基于这两组CSI测量资源进行测量，得到对应的2个RI，并通过组成CSI的CSI部分1上报所述2个RI。
这里，第一组CSI测量资源对应2个RI中的第一RI，第二组CSI测量资源对应2个RI中的第二RI。
步骤703：终端设备根据所述CSI部分1中的2个RI的取值，确定组成所述CSI的CSI部分2中包含的PMI和/或CQI。
以下对CSI部分2中包含的上行控制信息进行说明。
●在一种实施方式中，当所述2个RI中有一个RI(即第一RI)取值为0，且另一个RI(即第二RI)的取值不为0时，所述CSI部分2中只包含1个PMI，该PMI对应于第二RI(即该PMI的列数等于第二RI，或者说该PMI基于所述第二RI计算得到)。
此时，CSI的上报基于单个TRP的传输假设或者CSI的上报基于单个测量资源的测量假设。如图8-1所示，CSI中的全部信息都是基于第一组CSI测量资源(即CMR0和IMR0)测量得到。
进一步，CSI部分1可以包含1个CQI。例如：如图8-1所示，所述CSI部分1中包含RI0＞0、RI1＝0和CQI，所述CSI部分2中包含PMI。进一步，可选地，如果所述RI0的取值大于4，则所述CSI部分2还可以包含另一个CQI，其中，CSI部分1中的CQI对应于第一个码子，CSI部分2中的CQI对应于第二个码子I。
而在所述2个RI中有一个RI的取值为0时，对于另一个非零RI的取值没有限制。
●在另一种实施方式中，如果所述2个RI的取值都大于0，则所述CSI部分2中包含2个PMI和k个CQI，k＝0或1。其中，所述2个PMI分别对应于所述2个RI。
这里，所述2个PMI分别与所述2个RI基于相同的测量资源测量得到。例如，所述2个PMI中的第一PMI与所述2个RI中的第一RI基于相同的测量资源测量(如第一组CSI测量资源)得到，所述2个PMI中的第二PMI与所述2个RI中的第二RI基于相同的测量资源(如第二组CSI测量资源)测量得到。
此时，CSI的上报基于多个TRP的传输假设或者CSI的上报基于多个测量资源的测量假设。如图8-2和图8-3所示，CSI中的信息基于第一组CSI测量资源(即CMR0和IMR0)和第二组CSI测量资源(即CMR1和IMR1)测量得到。终端设备需要上报两个TRP或两个测量资源对应的上行控制信息。
可选地，k的取值可以根据CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。例如，k的取值可以在CSI对应的CSI上报配置中指示。例如，当网络设备配置的CORESET组索引的数量为1时，k＝0；当网络设配置的CORESET组索引的数量为2时，k＝1。
以下结合k的不同取值情况，来说明CSI部分1和CSI部分2中包含的内容以及内容的计算方式。
情况一：k＝0
这里，当k＝0时，CSI的上报是基于单DCI调度的多个TRP的传输假设(即两个TRP联合调度)，此时CSI部分1中包含的CQI基于所述2个RI和所述2个PMI计算得到，CSI部分2中不包含CQI。
例如，如图8-2所示，所述CSI部分1中包含RI0＞0、RI1＞0和CQI0，所述CSI部分2中包含PMI0和PMI1，其中，RI0和PMI1基于一组CMR和IMR(即CMR0和IMR0)测量得到，RI1和PMI1基于另一组CMR和IMR(即CMR1和IMR1)测量得到。CQI0基于终端设备估计的信道以及PMI0和PMI1计算得到，即CQI0是基于两个TRP的信道测量结果联合估计的CQI。
需要说明的是，图8-2是假设网络设备配置的两组CSI测量资源均只包含一个CMR和一个IMR，此时终端设备不需要上报CRI。
进一步，可选地，在网络设配置的一组CSI测量资源中包含多个测量资源(如多个CMR和多个IMR)的情况下，所述CSI部分1还可以包括2个CRI，所述2个CRI基于不同的测量资源集合测量得到。例如，所述CSI部分1还包括CRI0和CRI1，其中，CMR0和IMR0为该CRI0对应的一组CMR和IMR，CMR1和IMR1为该CRI1对应的一组CMR和IMR。
情况二：k＝1
这里，当k＝1时，CSI的上报是基于多DCI调度的多个TRP的传输假设(即两个TRP独立调度)，CSI部分2中包含的CQI与CSI部分1中包含的CQI分别基于所述2个PMI计算得到。
进一步，可选地，在网络设备配置的一组CSI测量资源中包含多个测量资源(如多个CMR和多个IMR)的情况下，所述CSI还可以包括2个CRI，所述2个CRI基于不同的测量资源集合测量得到。这里，假设一组CSI测量资源中包含多个CMR和多个IMR，终端设备需要从中选择一个CMR和一个IMR，并上报相应的CRI。两组CSI测量资源对应2个CRI，这2个CRI可以都在CSI部分1中，或者都在CSI部分2中，或者1个在CSI部分1中另一个在CSI部分2中。例如，如图8-3所示，所述CSI部分1中包含CRI0、CRI1、RI0＞0、RI1＞0和CQI0，所述CSI部分2中包含PMI0、PMI1和CQI1，其中，RI0、PMI0和CQI0基于一组CMR和IMR(即CMR0和IMR0)测量得到(CMR0和IMR0为该CRI0对应的一组CMR和IMR)，RI1、PMI1和CQI1基于另一组CMR和IMR(即CMR1和IMR1)测量得到(CMR1和IMR1为该CRI1对应的一组CMR和IMR)。
上述方案中，当所述2个RI均大于0时，所述2个RI的和不能超过终端设备支持的最大传输层数。进一步的，所述2个RI的和也不能超过4。
在一种实施方式中，终端设备或者网络设备可以基于所述2个RI的取值，确定CSI部分2包含的信息比特数，从而进行所述CSI部分2的生成或者检测。
本申请实施例的技术方案，终端设备通过2个RI的取值指示不同的传输方案(等效于传输假设或者测量假设)，网络设备可以基于2个RI的取值对应的传输方案进行下行传输的调度，从而支持不同传输方案之间的灵活切换。同时，由于终端设备只需要上报最佳的一个传输假设对应的CSI，不需要上报多个传输假设对应的CSI，可以明显降低CSI反馈的开销。进一步的，根据CSI部分1中的RI取值确定CSI部分2中包含的内容，可以基于不同的反馈内容灵活调整CSI部分2的比特大小和占用资源，从而避免不必要的上行资源浪费。
步骤704：终端设备根据确定的CSI部分1和CSI部分2，进行所述CSI的上报。
这里，CSI由CSI部分1和CSI部分2组成。可选地，可以参照相关技术中的方法来上报CSI部分1和CSI部分2。
当承载所述CSI部分2的PUSCH或PUCCH的码率超过预设的门限值时，按照所述CSI部分2中的多个信息的优先级顺序，先丢弃优先级较低的信息。这里，所述门限值可以由终端设备计算得到或者由网络设备配置给终端设备。
在一可选方式中，CSI部分2中与CSI部分1中的第一RI对应的PMI的优先级高于CSI部分2中的其他信息的优先级。
图9是本申请实施例提供的CSI上报装置的结构组成示意图，应用于终端设备，如图9所示，所述CSI上报装置包括：
确定单元901，用于根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI；
发送单元902，用于进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
在一可选方式中，所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测 量资源的测量假设。
在一可选方式中，所述第一信息为假设信息，
所述确定单元901，用于在所述假设信息的取值为第一值的情况下，确定所述第二CSI部分包含1个PMI；在所述假设信息的取值为第二值的情况下，确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
在一可选方式中，所述假设信息的取值为第一值的情况下，所述CSI中的所有信息基于单个测量资源进行测量得到。
在一可选方式中，所述2个PMI基于不同的测量资源进行测量得到。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
在一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
在一可选方式中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量、或者所述假设信息的取值确定。
在一可选方式中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
在一可选方式中，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
在一可选方式中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
在一可选方式中，所述第一信息为2个RI，
所述确定单元901，用于若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则确定所述第二CSI部分包含1个PMI。
在一可选方式中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
在一可选方式中，所述第一信息为2个RI，
所述确定单元901，用于若所述2个RI中的第一RI和第二RI的取值都大于0，则确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
在一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
在一可选方式中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
在一可选方式中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
在一可选方式中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
在一可选方式中，所述装置还包括：
处理单元(图中未示出)，用于若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中的RI具有对应关系。
在一可选方式中，所述装置还包括：
处理单元，用于若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中包含的2个RI中的第一RI具有对应关系。
在一可选方式中，所述测量资源包括CMR和/或IMR。
本领域技术人员应当理解，本申请实施例的上述CSI上报装置的相关描述可以参照本申请实施例的CSI上报及接收方法的相关描述进行理解。
图10是本申请实施例提供的CSI接收装置的结构组成示意图，应用于网络设备，如图10所示，所述CSI接收装置包括：
接收单元1001，接收终端设备上报的CSI，所述CSI包括第一CSI部分和第二CSI部分，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
在一可选方式中，所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。
在一可选方式中，所述第一信息为假设信息，
所述假设信息的取值为第一值的情况下，所述第二CSI部分包含1个PMI；
所述假设信息的取值为第二值的情况下，所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
在一可选方式中，所述假设信息的取值为第一值的情况下，所述CSI中的所有信息基于单个测量资源进行测量得到。
在一可选方式中，所述2个PMI基于不同的测量资源进行测量得到。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
在一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
在一可选方式中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的控制资源集CORESET组索引的数量、或者所述假设信息的取值确定。
在一可选方式中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
在一可选方式中，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
在一可选方式中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
在一可选方式中，所述第一信息为2个RI，
若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则所述第二CSI部分包含1个PMI。
在一可选方式中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
在一可选方式中，所述第一信息为2个RI，
若所述2个RI中的第一RI和第二RI的取值都大于0，则所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
在一可选方式中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
在一可选方式中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
在一可选方式中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
在一可选方式中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
在一可选方式中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
在一可选方式中，所述测量资源包括CMR和/或IMR。
本领域技术人员应当理解，本申请实施例的上述CSI接收装置的相关描述可以参照本申请实施例的CSI上报及接收方法的相关描述进行理解。
图11是本申请实施例提供的一种通信设备1100示意性结构图。该通信设备可以是终端设备，也可以是网络设备，图11所示的通信设备1100包括处理器1110，处理器1110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1100还可以包括存储器1120。其中，处理器1110可以从存储器1120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1120可以是独立于处理器1110的一个单独的器件，也可以集成在处理器1110中。
可选地，如图11所示，通信设备1100还可以包括收发器1130，处理器1110可以控制该收发器1130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1130可以包括发射机和接收机。收发器1130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1100具体可为本申请实施例的网络设备，并且该通信设备1100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1100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1100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1200包括处理器1210，处理器1210可以从存储器1220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，还包括输入接口1230和输出接口1240。
图13是本申请实施例提供的一种通信系统1300的示意性框图。如图13所示，该通信系统1300包括终端设备1310和网络设备1320。
其中，该终端设备1310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1320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。
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 (94)

  1. 一种信道状态信息CSI上报方法，所述方法包括：
    终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个秩指示信息RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括预编码矩阵指示信息PMI和/或信道质量指示信息CQI；
    所述终端设备进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
  2. 根据权利要求1所述的方法，其中，
    所述假设信息用于指示CSI上报是基于单个传输接收点TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。
  3. 根据权利要求1或2所述的方法，其中，所述第一信息为假设信息，所述终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息，包括：
    所述假设信息的取值为第一值的情况下，所述终端设备确定所述第二CSI部分包含1个PMI；
    所述假设信息的取值为第二值的情况下，所述终端设备确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
  4. 根据权利要求3所述的方法，其中，所述假设信息的取值为第一值的情况下，所述CSI中的所有信息基于单个测量资源进行测量得到。
  5. 根据权利要求3所述的方法，其中，所述2个PMI基于不同的测量资源进行测量得到。
  6. 根据权利要求3或5所述的方法，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
  7. 根据权利要求3或5所述的方法，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  8. 根据权利要求3、5至7中任一项所述的方法，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的控制资源集CORESET组索引的数量、或者所述假设信息的取值确定。
  9. 根据权利要求3、5至8中任一项所述的方法，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
  10. 根据权利要求9所述的方法，其中，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
  11. 根据权利要求3、5至10中任一项所述的方法，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
  12. 根据权利要求1所述的方法，其中，所述第一信息为2个RI，所述终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息，包括：
    若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则所述终端设备确定所述第二CSI部分包含1个PMI。
  13. 根据权利要求12所述的方法，其中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
  14. 根据权利要求1所述的方法，其中，所述第一信息为2个RI，所述终端设备根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息，包括：
    若所述2个RI中的第一RI和第二RI的取值都大于0，则所述终端设备确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
  15. 根据权利要求14所述的方法，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
  16. 根据权利要求14所述的方法，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  17. 根据权利要求14至16中任一项所述的方法，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
  18. 根据权利要求14至17中任一项所述的方法，其中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
  19. 根据权利要求14至18中任一项所述的方法，其中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
  20. 根据权利要求1至11中任一项所述的方法，其中，所述方法还包括：
    若承载所述第二CSI部分的物理上行共享信道PUSCH或物理上行控制信道PUCCH的码率超过第一门限值，则所述终端设备按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
    其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中的RI具有对应关系。
  21. 根据权利要求1、12至19中任一项所述的方法，其中，所述方法还包括：
    若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则所述终端设备按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
    其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中包含的2个RI中的第一RI具有对应关系。
  22. 根据权利要求2所述的方法，其中，所述测量资源包括信道测量资源CMR和/或干扰测量资源IMR。
  23. 一种CSI接收方法，所述方法包括：
    网络设备接收终端设备上报的CSI，所述CSI包括第一CSI部分和第二CSI部分，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
  24. 根据权利要求23所述的方法，其中，
    所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。
  25. 根据权利要求23或24所述的方法，其中，所述第一信息为假设信息，
    所述假设信息的取值为第一值的情况下，所述第二CSI部分包含1个PMI；
    所述假设信息的取值为第二值的情况下，所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
  26. 根据权利要求25所述的方法，其中，所述假设信息的取值为第一值的情况下，所述CSI中的所有信息基于单个测量资源进行测量得到。
  27. 根据权利要求25所述的方法，其中，所述2个PMI基于不同的测量资源进行测量得到。
  28. 根据权利要求25或27所述的方法，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
  29. 根据权利要求25或27所述的方法，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  30. 根据权利要求25、27至29中任一项所述的方法，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的控制资源集CORESET组索引的数量、或者所述假设信息的取值确定。
  31. 根据权利要求25、27至30中任一项所述的方法，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
  32. 根据权利要求31所述的方法，其中，所述第二CSI部分中包含的RI和所述第一CSI部 分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
  33. 根据权利要求25、27至32中任一项所述的方法，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
  34. 根据权利要求23所述的方法，其中，所述第一信息为2个RI，
    若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则所述第二CSI部分包含1个PMI。
  35. 根据权利要求34所述的方法，其中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
  36. 根据权利要求23所述的方法，其中，所述第一信息为2个RI，
    若所述2个RI中的第一RI和第二RI的取值都大于0，则所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
  37. 根据权利要求36所述的方法，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
  38. 根据权利要求36所述的方法，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  39. 根据权利要求36至38中任一项所述的方法，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
  40. 根据权利要求36至39中任一项所述的方法，其中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
  41. 根据权利要求36至40中任一项所述的方法，其中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
  42. 根据权利要求24所述的方法，其中，所述测量资源包括CMR和/或IMR。
  43. 一种CSI上报装置，应用于终端设备，所述装置包括：
    确定单元，用于根据第一CSI部分中的第一信息，确定第二CSI部分中的第二信息；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI；
    发送单元，用于进行CSI的上报，所述CSI包括所述第一CSI部分和所述第二CSI部分。
  44. 根据权利要求43所述的装置，其中，
    所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。
  45. 根据权利要求43或44所述的装置，其中，所述第一信息为假设信息，
    所述确定单元，用于在所述假设信息的取值为第一值的情况下，确定所述第二CSI部分包含1个PMI；在所述假设信息的取值为第二值的情况下，确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
  46. 根据权利要求45所述的装置，其中，所述假设信息的取值为第一值的情况下，所述CSI中的所有信息基于单个测量资源进行测量得到。
  47. 根据权利要求45所述的装置，其中，所述2个PMI基于不同的测量资源进行测量得到。
  48. 根据权利要求45或47所述的装置，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
  49. 根据权利要求45或47所述的装置，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  50. 根据权利要求45、47至49中任一项所述的装置，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量、或者所述假设信息的取值确定。
  51. 根据权利要求45、47至50中任一项所述的装置，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
  52. 根据权利要求51所述的装置，其中，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
  53. 根据权利要求45、47至52中任一项所述的装置，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
  54. 根据权利要求43所述的装置，其中，所述第一信息为2个RI，
    所述确定单元，用于若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则确定所述第二CSI部分包含1个PMI。
  55. 根据权利要求54所述的装置，其中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
  56. 根据权利要求43所述的装置，其中，所述第一信息为2个RI，
    所述确定单元，用于若所述2个RI中的第一RI和第二RI的取值都大于0，则确定所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
  57. 根据权利要求56所述的装置，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
  58. 根据权利要求56所述的装置，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  59. 根据权利要求56至58中任一项所述的装置，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
  60. 根据权利要求56至59中任一项所述的装置，其中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
  61. 根据权利要求56至60中任一项所述的装置，其中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
  62. 根据权利要求43至53中任一项所述的装置，其中，所述装置还包括：
    处理单元，用于若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
    其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中的RI具有对应关系。
  63. 根据权利要求43、54至61中任一项所述的装置，其中，所述装置还包括：
    处理单元，用于若承载所述第二CSI部分的PUSCH或PUCCH的码率超过第一门限值，则按照所述第二CSI部分中的多个信息的优先级顺序，对所述多个信息中的至少一个信息进行丢弃，其中，被丢弃的信息对应的优先级低于不被丢弃的信息对应的优先级；
    其中，所述第二CSI部分中的第一PMI的优先级高于所述第二CSI部分中的其他信息的优先级，所述第一PMI与所述第一CSI部分中包含的2个RI中的第一RI具有对应关系。
  64. 根据权利要求44所述的装置，其中，所述测量资源包括CMR和/或IMR。
  65. 一种CSI接收装置，应用于网络设备，所述装置包括：
    接收单元，接收终端设备上报的CSI，所述CSI包括第一CSI部分和第二CSI部分，所述第二CSI部分中的第二信息基于所述第一CSI部分中的第一信息确定；其中，所述第一信息为假设信息或者2个RI，所述假设信息用于指示CSI上报所基于的传输假设或者测量假设，所述2个RI基于不同的测量资源进行测量得到，所述第二信息包括PMI和/或CQI。
  66. 根据权利要求65所述的装置，其中，
    所述假设信息用于指示CSI上报是基于单个TRP的传输假设还是基于多个TRP的传输假设，或者，用于指示CSI上报是基于单个测量资源的测量假设还是基于多个测量资源的测量假设。
  67. 根据权利要求65或66所述的装置，其中，所述第一信息为假设信息，
    所述假设信息的取值为第一值的情况下，所述第二CSI部分包含1个PMI；
    所述假设信息的取值为第二值的情况下，所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1。
  68. 根据权利要求67所述的装置，其中，所述假设信息的取值为第一值的情况下，所述CSI 中的所有信息基于单个测量资源进行测量得到。
  69. 根据权利要求67所述的装置，其中，所述2个PMI基于不同的测量资源进行测量得到。
  70. 根据权利要求67或69所述的装置，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI计算得到。
  71. 根据权利要求67或69所述的装置，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  72. 根据权利要求67、69至71中任一项所述的装置，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的控制资源集CORESET组索引的数量、或者所述假设信息的取值确定。
  73. 根据权利要求67、69至72中任一项所述的装置，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个RI，所述RI和所述第一CSI部分中包含的RI基于不同的测量资源进行测量得到。
  74. 根据权利要求73所述的装置，其中，所述第二CSI部分中包含的RI和所述第一CSI部分中包含的RI的和，小于等于所述终端设备支持的最大传输层数。
  75. 根据权利要求67、69至74中任一项所述的装置，其中，所述假设信息的取值为第二值的情况下，所述第二CSI部分包含1个CRI，所述CRI和所述第一CSI部分中包含的CRI基于不同的测量资源集合测量得到。
  76. 根据权利要求65所述的装置，其中，所述第一信息为2个RI，
    若所述2个RI中的第一RI的取值为0，第二RI的取值不为0，则所述第二CSI部分包含1个PMI。
  77. 根据权利要求76所述的装置，其中，所述CSI中包含的PMI和CQI均基于所述第二RI计算得到。
  78. 根据权利要求65所述的装置，其中，所述第一信息为2个RI，
    若所述2个RI中的第一RI和第二RI的取值都大于0，则所述第二CSI部分包含2个PMI和k个CQI，k的取值为0或1，其中，所述2个PMI中的第一PMI对应于所述第一RI，所述2个PMI中的第二PMI对应于所述第二RI。
  79. 根据权利要求78所述的装置，其中，所述k的取值为0的情况下，所述第一CSI部分中包含的CQI基于所述2个RI和所述2个PMI计算得到。
  80. 根据权利要求78所述的装置，其中，所述k的取值为1的情况下，所述第一CSI部分中包含的CQI基于所述2个PMI中的第一PMI计算得到，所述第二CSI部分中包含的CQI基于所述2个PMI中的第二PMI计算得到。
  81. 根据权利要求78至80中任一项所述的装置，其中，所述k的取值根据所述CSI对应的CSI上报配置、或者网络设备配置的CORESET组索引的数量。
  82. 根据权利要求78至81中任一项所述的装置，其中，所述第一CSI部分或所述第二CSI部分包含2个CRI，所述2个CRI基于不同的测量资源集合进行测量得到。
  83. 根据权利要求78至82中任一项所述的装置，其中，所述2个RI的和小于等于所述终端设备支持的最大传输层数。
  84. 根据权利要求66所述的装置，其中，所述测量资源包括CMR和/或IMR。
  85. 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，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22中任一项所述的方法。
  86. 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，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23至42中任一项所述的方法。
  87. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至22中任一项所述的方法。
  88. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求23至42中任一项所述的方法。
  89. 一种计算机可读存储介质，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22中任一项所述的方法。
  90. 一种计算机可读存储介质，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23至42中任一项所述的方法。
  91. 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如权利要求1至22中任一项所述的方法。
  92. 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如权利要求23至42中任一项所述的方法。
  93. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至22中任一项所述的方法。
  94. 一种计算机程序，所述计算机程序使得计算机执行如权利要求23至42中任一项所述的方法。
PCT/CN2020/113101 2020-09-02 2020-09-02 Csi上报及接收方法、装置、终端设备、网络设备 Ceased WO2022047679A1 (zh)

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