WO2020001132A1 - 信息反馈方法及装置，存储介质，电子装置 - Google Patents

信息反馈方法及装置，存储介质，电子装置 Download PDF

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Publication number
WO2020001132A1
WO2020001132A1 PCT/CN2019/082846 CN2019082846W WO2020001132A1 WO 2020001132 A1 WO2020001132 A1 WO 2020001132A1 CN 2019082846 W CN2019082846 W CN 2019082846W WO 2020001132 A1 WO2020001132 A1 WO 2020001132A1
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Prior art keywords
csi
resource
feedback
pieces
cri
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PCT/CN2019/082846
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English (en)
French (fr)
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蒋创新
高波
吴昊
张楠
鲁照华
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中兴通讯股份有限公司
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Priority to US17/256,037 priority Critical patent/US11509371B2/en
Priority to EP19827115.7A priority patent/EP3813415A4/en
Publication of WO2020001132A1 publication Critical patent/WO2020001132A1/zh

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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
    • H04B7/06—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
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • 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
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0091—Signaling for the administration of the divided path

Definitions

  • the present application relates to the field of communications, for example, to an information feedback method and device, a storage medium, and an electronic device.
  • the new wireless technology new radio (NR)
  • NR new radio
  • TRP Total Radiated Power
  • one or two qcl-Types are included in a TCI configuration. These one or two qcl-Types can be regarded as one qcl-set, which provides a quasi-co-location for the target reference signal (
  • the quasi-co-location (QCL) relationship provides a QCL relationship between a reference signal (RS) configured in a qcl-Type and a target reference signal.
  • the target reference signal may be a channel state information reference signal (CSI-RS), a demodulation reference signal (Demodulation Reference Signal, DMRS), and the like.
  • a Transmission Configuration Indication contains one or two RSs (configured in QCL-Info), which can be regarded as one RS-set, which is used to indicate it and the target reference. QCL relationship of the signal. If the TCI contains two RSs, that is, qcl-Type1 and qcl-Type2 are configured, and the QCL types configured in qcl-Type1 and qcl-Type2 are different.
  • the qcl-Type configured in qcl-Type1 is type A (Doppler shift Doppler spread, average delay, delay spread)
  • the qcl-Type configured in qcl-Type2 is type D (Spatial Rx parameter: can be understood as a beam).
  • each TCSI can be configured with a TCI.
  • the general base station will configure the UE with a CSI-RS resource set, and each CSI-RS resource set can be configured with one or more CSI-RS RS resources.
  • the user After performing channel measurement on each CSI-RS resource, the user will feedback a CRI to indicate which CSI-RS resource has the best quality.
  • the UE may also need to feedback RI, PMI, CQI, etc.
  • the type of CSI feedback can include 'cri-RI-PMI-CQI', 'cri-RI-i1-CQI', 'cri-RI-LI-PMI-CQI', cri-RI-i1 ', or' cri- RI-CQI.
  • the type of CSI feedback is configured under the parameter CSI-ReportConfig. It can be seen that for a CSI reporting configuration (CSI reporting configuration, CSI-ReportConfig), the UE only needs to report 1 CRI, 1 RI and 1 PMI, 1 or 2 CQI. If it is subband feedback, then certain components and CQIs in the PMI are one feedback per subband, and one or two CQI feedback per subband.
  • the above feedback mechanism can be applied to single TRP / panel / beam transmission.
  • the above mechanism will have some problems.
  • the UE only feedbacks a CRI, and a CRI corresponds to a CSI-RS resource.
  • the resource is configured with only one TCI, and this TCI contains only one RS corresponding to the QCL type.
  • D Spatial Rx parameter
  • the base station schedules multiple beam transmissions, the CSI fed back by the UE is less accurate (because the feedback assumes a single beam transmission), resulting in a direct mismatch between the scheduling and the actual channel, which further affects the quality of data transmission.
  • the embodiments of the present application provide an information feedback method and device, a storage medium, and an electronic device.
  • an information feedback method including: determining N pieces of feedback information according to a CSI reporting configuration, wherein the feedback information includes at least: a rank indicator RI, a precoding indicator PMI, and A non-zero wideband amplitude coefficient; wherein N is an integer greater than or equal to 1; and sending N said feedback information to a base station.
  • another information feedback method including: receiving N pieces of feedback information configured according to a CSI report sent by a terminal UE, wherein the feedback information includes at least: a rank indication RI, and precoding Indicate PMI, non-zero wideband amplitude coefficient of feedback, where N is an integer greater than or equal to 1.
  • an information feedback device including: a determining module configured to determine N pieces of feedback information according to a CSI reporting configuration, wherein the feedback information includes at least a rank indication RI, The coding indicates PMI, a non-zero wideband amplitude coefficient of feedback, where N is an integer greater than or equal to 1; the sending module is configured to send N pieces of feedback information to the base station.
  • another information feedback device including: a receiving module configured to receive N pieces of feedback information configured according to a CSI report sent by a terminal UE, where the feedback information includes at least: rank Indicates RI, precoding indicates PMI, non-zero wideband amplitude coefficient of feedback, where N is an integer greater than or equal to 1.
  • a storage medium is further provided.
  • the storage medium stores a computer program, and the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • an electronic device which includes a memory and a processor.
  • the memory stores a computer program
  • the processor is configured to run the computer program to execute any one of the foregoing. Steps in a method embodiment.
  • FIG. 1 is a network architecture diagram of an embodiment of the present application
  • FIG. 3 is another flowchart of information feedback according to an embodiment of the present application.
  • FIG. 4 is a structural block diagram of an information feedback device according to an embodiment of the present application.
  • FIG. 5 is a structural block diagram of another information feedback device according to an embodiment of the present application.
  • FIG. 1 is a network architecture diagram of the embodiment of the present application. As shown in FIG. To interact.
  • FIG. 2 is a flowchart of information feedback according to an embodiment of the present application. As shown in FIG. 2, the process includes the following step S202 And step S204.
  • step S202 N feedback information is determined according to a CSI reporting configuration.
  • the feedback information includes at least: a Rank Indication (RI), a Precoding Indication (PMI), and a feedback non-zero wideband amplitude coefficient; wherein N is an integer greater than or equal to 1.
  • RI Rank Indication
  • PMI Precoding Indication
  • N a feedback non-zero wideband amplitude coefficient
  • N feedback information is determined for a CSI reporting configuration and sent to the base station, so that the terminal and the base station can support multiple panel / beam / TRP transmission at the same time, can match the scheduling channel and the actual channel, and solves the related technology.
  • the technical problem of inaccurate CSI feedback has expanded the application scenarios of communication systems.
  • the execution subject of the above steps may be a terminal, such as a mobile phone, a vehicle-mounted device, etc., but is not limited thereto.
  • FIG. 3 is another flowchart of information feedback according to the embodiment of the present application. As shown in FIG. 3, the process includes the following: Step S302.
  • step S302 the N feedback information configured according to one CSI report sent by the terminal UE is received.
  • the feedback information includes: a rank indication RI, a precoding indication PMI, and a feedback non-zero wideband amplitude coefficient, where N is an integer greater than or equal to 1.
  • the execution subject of the above steps may be a network side, such as a base station, but is not limited thereto.
  • the configuration according to one CSI report in this embodiment can be understood as one CSI report configuration.
  • the feedback information when the sum of the N RIs is less than or equal to 4, the feedback information further includes a Channel Quality Indicator (CQI); when the sum of the N RIs is greater than 4, the feedback The information also includes 2 CQIs.
  • CQI Channel Quality Indicator
  • the N pieces of feedback information refer to N RI, N PMI, and N feedback non-zero wideband amplitude coefficients.
  • N is equal to the channel state information reference signal resource indication CRI corresponding to the channel state information reference signal resource CSI-RS.
  • the transmission configuration configured in the resource indicates the number of quasi-co-location QCL sets included in the TCI, where the feedback information CRI is also included. In one embodiment, the number of CRIs is one. In one embodiment, the transmission configuration configured in one CSI-RS resource indicates that the number of TCIs is one.
  • N is equal to the number of TCIs configured in the CSI-RS resource corresponding to the CRI, and the feedback information further includes the CRI.
  • the number of CRIs is one.
  • the number of quasi-co-location QCL sets included in one TCI is one.
  • N is equal to the number of CRIs
  • the feedback information further includes CRIs.
  • the number of QCL sets configured in all CSI-RS resources in the CSI-RS resource set is equal to one.
  • the number of TCIs configured in all CSI-RS resources in the CSI-RS resource set is one, and the number of QCL sets contained in each TCI is equal to one.
  • the maximum value of N is notified to the terminal UE by high-level signaling.
  • the UE selects an appropriate N according to at least one of the above policies within the range of the maximum value of N.
  • the feedback information does not include the CRI.
  • the CSI-RS resource corresponding to the CRI is the CSI-RS resource included in the CSI-RS resource set.
  • the overhead of the RI feedback is determined by the CSI-RS resource with the largest number of QCL sets in the TCI under the CSI-RS resource set.
  • the overhead of the RI feedback is determined by the CSI-RS resource with the largest number of TCIs configured under the CSI-RS resource set.
  • the N RIs are fed back through the same signaling (such as an index).
  • the first PMI is set in the CSI section 2 and the second PMI is set in the CSI section 3.
  • N pieces of feedback information there is a one-to-one correspondence between the N pieces of feedback information.
  • N RIs there is a one-to-one correspondence between N RIs, N PMIs, and N non-zero wideband amplitude coefficients.
  • N CRIs are also included.
  • module may implement a combination of software and / or hardware for a predetermined function.
  • devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and conceived.
  • FIG. 4 is a structural block diagram of an information feedback device according to an embodiment of the present application. As shown in FIG. 4, the device includes a determining module 40 and a sending module 42.
  • the determining module 40 is configured to determine N pieces of feedback information according to a channel state information CSI reporting configuration, where the feedback information includes: a rank indicator RI, a precoding indicator PMI, and a feedback non-zero wideband amplitude coefficient, where N is greater than or An integer equal to 1.
  • the sending module 42 is configured to send N pieces of feedback information to the base station.
  • FIG. 5 is a structural block diagram of another information feedback device according to an embodiment of the present application. As shown in FIG. 5, the device includes a receiving module 50.
  • the receiving module 50 is configured to receive N feedback information configured according to one channel state information CSI report sent by the terminal UE, where the feedback information includes: a rank indication RI, a precoding indication PMI, and a feedback non-zero wideband amplitude coefficient, where: N is an integer greater than or equal to 1.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented by the following methods, but is not limited to the above: the above modules are all located in the same processor; The forms are located in different processors.
  • Embodiment 1-1 is a diagrammatic representation of Embodiment 1-1:
  • the next version of NR may introduce multiple beams, panels, or TRPs to transmit data to the UE at the same time. If only one CRI is fed back, and only one TCI configuration is configured in the CSI-RS resource corresponding to one CRI, and each The TCI configuration includes only one QCL set, and one QCL set corresponds to one beam, panel, or TRP, which makes the feedback and actual scheduling mismatch.
  • a CSI-RS resource base station can be configured with UE feedback up to N CRIs.
  • High-level signaling configuration generally Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling is not excluded).
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the value of N can be configured under the CSI report, and the value of N configured under different CSI reports can be different.
  • the UE After configuring N in the upper layer, the UE needs to select a maximum of N CSI-RS resources from the M CSI-RS resources in the CSI-RS resource set and report them to the base station, that is, report a maximum of N CRIs. It is not always N and may be less than N.
  • the combination is shown in Table 1. There are 10 possibilities Index 0-9. Index 0,4,7,9 indicates that the UE only feedbacks 1 CRI. So multiple CRIs can jointly feedback.
  • the UE needs to feedback N1 RIs.
  • the N1 RIs can be fed back together or they can be fed back together with the CRI index.
  • Table 2 for joint feedback CRI and RI.
  • Different CRIs can be understood as different Panels, beams, or TRPs, so different CRIs should correspond to different PMI transmissions.
  • multiple PMIs actually transmitted can be jointly transmitted.
  • the multiple Panel / beam / TRP may transmit the same TB to the UE.
  • the multiple CRI, RI, and PMI should correspond to the same A CQI. That is, N1 CRI, RI, and PMI correspond to only one CQI. If the sum of multiple reported RIs is greater than 4, two CQIs are required. What is assumed here is wideband PMI and CQI. For sub-band PMI and CQI transmission, for each sub-band, the UE needs to feed back the N1 sub-band PMI, one or two CQIs (if the sum of multiple RIs reported is greater than 4, two CQIs are required. (When the sum of the RIs is not greater than 4, 1 CQI is required.)
  • the CRI, RI, and the first CQI that are fed back jointly can be fed back in the CSI part 1, and all multiple PMIs and the second CQI (if present) are fed back in the CSI part 2.
  • CSI part1 and part2 are independently coded.
  • the feedback content of CSI part 1 determines the size of CSI part 2. This is because the number of CRIs, the number and size of RIs determine the PMI feedback overhead.
  • the size of the CSI part 1 must be fixed, that is, both the UE and the base station know it. After the base station has demodulated the CSI part 1, the content size of the CSI part 2 can be known.
  • the UE may individually feed back up to N CRIs.
  • the UE may also separately feed back up to N RIs.
  • the number of feedback CRIs determines the number of RIs, the number of PMIs, and the sum of the total RIs determines the number of CQIs, and the size of an RI determines the feedback overhead of the corresponding PMI.
  • the number of feedback CRIs determines the number of RIs, the number of PMIs, and the sum of the total RIs determines the number of CQIs, and the size of an RI determines the feedback overhead of the corresponding PMI.
  • the CSI part 1 includes: all CRI reports, all RI reports, and the first CQI.
  • CRI can be reported jointly or separately;
  • RI can report jointly or separately
  • CRI and RI can be reported jointly or separately.
  • the CSI part 2 includes: PMI (the number of PMIs is the same as the number of CRIs) and a second CQI (if the sum of all RIs is greater than 4, there is a second CQI).
  • the CSI part 1 includes: the total number of CRIs, the first CRI, the first RI, and the first CQI.
  • CSI part 2 includes: the remaining CRI (if the total number of CRI is greater than 1), the remaining RI (if the total number of CRI is greater than 1), PMI (the number of PMI is the same as the number of CRI), and the second CQI (if all RI The sum is greater than 4).
  • CSI part 1 includes: all CRIs, the first RI, and the first CQI.
  • the CSI part 2 includes: the remaining RI, PMI (the number of PMI is the same as the number of CRI), and the second CQI (if the sum of all RIs is greater than 4).
  • CSI part 1 includes: all CRIs, the first RI, and the first CQI.
  • the CSI part 2 includes: the PMI corresponding to the first CRI, and the second CQI.
  • CSI part 3 includes: the remaining RI, PMI.
  • CSI part 2 and part 3 are interchangeable.
  • the CSI part1 includes: the first CRI, the first RI, and the first CQI. In one embodiment, the CSI part 1 may also include the total number of CRIs.
  • the CSI part 2 includes: the PMI corresponding to the first CRI, and the second CQI.
  • CSI Part 3 includes: the second CRI, the second RI.
  • the CSI part 4 includes: the PMI corresponding to the second CRI.
  • CSI Part 5 includes: the third CRI, the third RI.
  • the CSI part 6 includes: the PMI corresponding to the third CRI.
  • All CRIs can be fed back individually or individually, each CRI can be fed back to one RI, all RIs can be fed back together or separately, CRI and RI can be fed back individually or separately, each CRI can be fed back to one PMI, and all PMIs can be fed back or individually , If the sum of RI is less than or equal to 4, then 1 CQI is fed back (if it is subband feedback, 1 CQI is fed back for each subband); otherwise 2 CQI is fed back (if it is subband feedback, for each subband) (Both feedback 2 CQI).
  • CSI Part 1 includes RI, CQI, and the number of non-zero wideband amplitude coefficients for each Layer (an indication of non-zero wideband amplitude coefficients layer for the Type II (CSI);
  • Part 2 contains the PMI of the Type II CSI. Part 1 and 2 independent encoding.
  • Each CRI is for one RI
  • Each CRI is for one PMI
  • Embodiment 2-1
  • each QCL set can contain N qcl-types, such as one or two. If a CSI-RS resource set is used for CSI measurement feedback, then the set contains one or more CSI-RS resources. The number of QCL sets contained in the TCI of different CSI-RS resources can be different. After the channel measurement, the UE will select a CSI-RS resource with the strongest channel quality, and the CSI-RS resource corresponds to the CRI fed back by the UE.
  • the UE needs to feedback N RIs.
  • the sum of the N RIs does not exceed the capability of the largest RI that the UE can support.
  • the N feedback RIs correspond to the N QCL sets included in the TCI one-to-one. At this time, it is assumed that only one TCI is configured in each CSI-RS resource, but the number of QCL sets included in the TCI configured under different CSI-RS resources can be different.
  • the UE needs to feedback N PMIs.
  • the N feedback PMIs correspond to the N QCL sets included in the TCI one-to-one, and also correspond to the N RIs of the feedback.
  • PMI contains different components.
  • PMI may include one or more of the parameters such as i1, i2, LI, and i1 can be decomposed into multiple components, such as i 11 , i 12 , i 13 These are described in the NR protocol 38.214.
  • N PMIs can be fed back jointly.
  • the UE if the sum of the N RIs exceeds 4, the UE needs to feed back 2 CQIs, that is, for subband CQI feedback, the UE needs to feed back 2 CQIs for each subband, and for broadband CQI feedback, the UE only Need to feed back 2 CQIs corresponding to the entire configured bandwidth. If the sum of these N RIs does not exceed 4, the UE only needs to feed back 1 CQI, that is, for subband CQI feedback, the UE needs to feed back 1 CQI for each subband, and for broadband CQI feedback, the UE only needs to feed back 1 CQI corresponds to the entire configured bandwidth.
  • the CRI, the feedback information of the N RIs, and the first CQI may be fed back in CSI part1; the second CQI (if present) and the PMI may be fed back in CSI part2.
  • the number of PMI is equal to the number of N.
  • the maximum RI supported by UE0 8.
  • the configuration of RI can be as shown in Table 3. Only 5bits are needed, and index 0-28 can Indicates a combination of any two RIs.
  • CSI part 1 contains the RI index, CRI, and the first CQI; and CSI part 2 contains the PMI and the second CQI.
  • the number of PMI is equal to the number of N.
  • N RIs can also be independently fed back. Since the feedback information of N RIs is in CSI part1, and the payload of CSI part1 needs to be fixed, the feedback overhead of RI in CSI part1 should be in accordance with the maximum N of all CSI-RS resources in the CSI-RS resource set. Value to calculate. In other words, the overhead of the RI feedback is determined by the CSI-RS resource in the TCI under the CSI-RS resource set that contains the largest number of QCL sets.
  • 4 CSI-RS resources are configured under the CSI-RS resource set, which are CSI-RS resources 0, 1, 2, and 3, and the number of QCL sets contained in the TCI configured under these 4 CSI-RS resources are respectively For 1, 2, 3, 1. Then the feedback overhead of the RI is determined based on the CSI-RS resource 3, even if the CRI that the UE eventually opposes is 0 (corresponding to the CSI-RS resource 0). If N RIs are independently feedbacked, and feedback of one RI requires x bits, then 3x bits are required to feedback RI in this case. It is assumed here that all CSI-RS resources under CSI-RS resources are configured with only one TCI.
  • Another possibility is to put the CRI, N RIs, the first CQI in the CSI part 1, the first PMI, the second CQI (if it exists) in the CSI part 2, and then the second And the remaining PMI is placed in CSI part 3 (if N> 1) or the i-th PMI is placed in CSI part i + 1 (i is less than or equal to N).
  • Each CSI part is independently coded.
  • the feedback CRI, one of the N RIs, the first CQI is the first part of the CSI, that is, the CSI part1; the remaining RI, CQI (if any), and the PMI are the second part of the CSI, That is, CSI part 2.
  • the CSI part 1 includes a CRI, a sum of N RIs, and a first CQI; and the CSI part 2 includes a second CQI (if present) and PMI.
  • N RIs and PMIs are fed back for the N QCL sets in the TCI, and then the CQI is calculated based on the N RIs and PMIs.
  • This CQI is calculated by the N RIs and PMIs together.
  • N is a positive integer and can be 1, 2, or 4 etc.
  • the size of the N value in the TCI of each CSI-RS resource can be different, and is configured by higher layer signaling.
  • the base station After receiving the CRI, N RIs, N PMIs and 1 or 2 CQIs fed back by the UE, the base station transmits data corresponding to the N RIs and PMIs fed back by the application on N beam / panel / TRP, and the data The size of the block can be determined by the feedback CQI.
  • the method described in this paper introduces corresponding feedback, and the accuracy is greatly improved.
  • One CQI described in this article is for one codeword, and two CQIs are for two codewords. If it is subband feedback, each subband may feed back 1 or 2 CQIs. PMI feedback may also be subband.
  • the first CQI corresponds to the first two RIs and the corresponding PMI; the last RI and the corresponding PMI correspond to the second CQI.
  • the first CQI corresponds to the second and third RI and the corresponding PMI; the remaining one RI and the corresponding PMI correspond to the second CQI .
  • the first CQI corresponds to the first and third RI and the corresponding PMI; the remaining one RI and the corresponding PMI correspond to the second CQI .
  • the two RIs and the corresponding PMI correspond to the first CQI
  • the remaining RIs and the corresponding PMI correspond to the second CQI.
  • the sum of any two corresponding RIs in the three QCL sets is not more than 4
  • the two RIs and the corresponding PMI correspond to the second CQI
  • the remaining RIs correspond to the corresponding PMI. The first CQI.
  • the first two QCL sets correspond to the first CQI
  • the last two QCL sets correspond to the second CQI.
  • N RI corresponds to N RS sets / QCL sets
  • N RI The feedback can be combined or individually. If the sum of N RIs is less than or equal to 4, one CQI is fed back; otherwise, two CQIs are fed back.
  • Embodiment 2-2
  • CSI Part 1 includes RI, CQI, and the number of non-zero wideband amplitude coefficients for each Layer (an indication of non-zero wideband amplitude coefficients) for the Type II (CSI).
  • Part 2 contains the PMI of the Type II and CSI. Part 1 and 2 independent coding.
  • the CSI-RS resource is configured with one TCI, and the TCI contains N RS sets or QCL sets, the feedback N RIs correspond to the N RS sets / QCL sets, respectively.
  • the N RIs can be fed back jointly or separately
  • N RIs If the sum of N RIs is less than or equal to 4, one CQI is fed back; otherwise, two CQIs are fed back.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • One way to reduce CSI-RS overhead and obtain accurate CSI for multiple beam / panel / TRP simultaneous transmission is to configure more than 1 TCI for a CSI-RS resource.
  • a downlink traffic channel Physical Downlink Shared Channel, PDSCH
  • multiple TCIs may also need to be configured for PDSCH or DMRS.
  • the CSI-RS resource set contains one or more CSI-RS resources, and the number of TCIs included in the configuration of different CSI-RS resources
  • the number can be different, for example, the number of TCIs configured for some CSI-RS resources is 1, and the number of TCIs configured for some CSI-RS resources can be greater than 1, such as 2.
  • the UE will select a CSI-RS resource with the strongest channel quality, and the CSI-RS resource corresponds to the CRI fed back by the UE.
  • N RIs correspond to N PMIs. If the sum of N RIs is not greater than 4, then only 1 CQI is fed back, otherwise 2 CQIs are fed back.
  • the N RIs can be coded jointly or independently.
  • the CSI-RS resource is configured with N TCIs
  • N RIs can be fed back together or individually;
  • N RIs If the sum of N RIs is less than or equal to 4, 1 CQI is fed back; otherwise 2 CQIs are fed back
  • the feedback overhead of RI in CSI part1 should be in accordance with the maximum N of all CSI-RS resources in the CSI-RS resource set Value to calculate.
  • the feedback overhead of the RI is determined by the CSI-RS resource with the largest number of TCIs configured under the CSI-RS resource set.
  • the number of CSI-RS resources configured in the CSI-RS resource set is one, then CRI feedback is not needed.
  • the number of N is determined by the number of TCIs configured under this CSI-RS resource and the number of QCL sets configured under TCI.
  • N is the number of CRIs fed back, the number of TCIs contained in the CSI-RS resource (s) corresponding to the CRI, and the number of QCL sets contained in these TCIs Decide.
  • N is equal to the total number of QCL sets contained in the CSI-RS resources (s) corresponding to all the CRIs fed back. That is, for one channel state information CSI reporting configuration, N pieces of feedback information are determined, where N is equal to the total number of QCL sets included in all TCIs configured in the CSI-RS resources (s) corresponding to all CRIs fed back.
  • the feedback information includes: a rank indication RI, a precoding indication PMI, and a feedback non-zero wideband amplitude coefficient; wherein N is an integer greater than or equal to 1; and in a case where the sum of N RIs is less than or equal to 4,
  • the feedback information further includes 1 channel quality indication CQI; and, in a case where the sum of N RIs is greater than 4, the feedback information further includes 2 CQIs.
  • An embodiment of the present application further provides a storage medium, where a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • the above-mentioned storage medium may be configured to store a computer program for performing the following steps S1 and S2.
  • N feedback information is determined according to a channel state information CSI reporting configuration, where the feedback information includes: a rank indicator RI, a precoding indicator PMI, and a feedback non-zero wideband amplitude coefficient; where N is greater than Or an integer equal to 1.
  • step S2 N pieces of the feedback information are sent to the base station.
  • the storage medium may include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM read-only memory
  • RAM random access memory
  • mobile hard disk a magnetic disk
  • optical disk Various media that can store computer programs.
  • An embodiment of the present application further provides an electronic device including a memory and a processor.
  • the memory stores a computer program
  • the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.
  • the electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the processor, and the input-output device is connected to the processor.
  • the processor may be configured to execute the following steps S1 and S2 by a computer program.
  • N feedback information is determined according to a channel state information CSI reporting configuration, where the feedback information includes: a rank indicator RI, a precoding indicator PMI, and a feedback non-zero wideband amplitude coefficient; where N is greater than Or an integer equal to 1.
  • step S2 N pieces of the feedback information are sent to the base station.
  • modules or steps of the present application may be implemented by a general-purpose computing device, and they may be concentrated on a single computing device or distributed on a network composed of multiple computing devices.
  • they may be implemented with program code executable by a computing device, so that they may be stored in a storage device and executed by the computing device, and in some cases, may be different from here
  • the steps shown or described are performed in sequence, or they are separately made into individual integrated circuit modules, or multiple modules or steps in them are made into a single integrated circuit module for implementation.
  • this application is not limited to any particular combination of hardware and software.

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Abstract

公开了一种信息反馈方法及装置，存储介质，电子装置，其中，该方法包括：根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，所述N个反馈信息包括：N个秩指示RI和N个预编码指示PMI；其中，N为大于或者等于1的整数；向基站发送N个反馈信息。

Description

信息反馈方法及装置，存储介质，电子装置
本申请要求在2018年06月25日提交中国专利局、申请号为201810663295.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，例如涉及一种信息反馈方法及装置，存储介质，电子装置。
背景技术
相关技术中，如果新无线技术(new radio，NR)支持多面板(panel)/波速(beam)/发射及接收点(Total Radiated Power，TRP)同时传输，目前的信道状态信息(Channel state information，CSI)反馈机制的准确性会大打折扣。为了提高多panel/beam/TRP同时传输的CSI反馈准确度，新的反馈机制必须引入。
相关技术的NR中，一个TCI配置下包含了1个或者2个qcl-Type，这1个或者2个qcl-Type可以看作是1个qcl-set，给目标参考信号提供了准共位置(quasi co-location，QCL)关系，即提供了qcl-Type中配置的参考信号(reference signal，RS)和目标参考信号的QCL关系。目标参考信号可以是信道状态信息参考信号(CSI-RS)，解调参考信号(Demodulation Reference Signal，DMRS)等。
也就是说，一个传输配置指示(Transmission Configuration Indicator，TCI)中包含了1个或者2个RS(配置在QCL-Info中)，可以看作是1个RS-set，用于指示它和目标参考信号的QCL关系。如果TCI中包含2个RS，即配置了qcl-Type1和qcl-Type2,qcl-Type1和qcl-Type2中配置的QCL类型不一样，比如qcl-Type1中配置的qcl-Type是type A(Doppler shift,Doppler spread,average delay,delay spread),而qcl-Type2中配置的qcl-Type是type D(Spatial Rx parameter：可以理解为波束)。
如果目标参考信号是CSI-RS，那么一般每个CSI-RS resource都可以配置一个TCI。如果该CSI-RS是用于CSI获取的，那么一般基站会配置给UE一个CSI-RS资源集合(CSI-RS resource set)，每个CSI-RS resource set中可以配置1个或者多个CSI-RS resource。用户在对每个CSI-RS resource进行信道测量后，会反馈一个CRI用于指示哪个CSI-RS resource的质量最好。同时针对不同的反 馈配置，UE可能还需要反馈RI，PMI，CQI等。比如CSI反馈的类型可以包含'cri-RI-PMI-CQI'，'cri-RI-i1-CQI'，'cri-RI-LI-PMI-CQI',cri-RI-i1'，或者'cri-RI-CQI。目前的NR设计架构下，CSI反馈的类型是在参数CSI-ReportConfig下配置的。可以看出，对于一个CSI上报配置(CSI reporting setting or CSI reporting configurations，CSI-ReportConfig)，UE只需上报1个CRI，1个RI和1个PMI，1个或者2个CQI。如果是子带反馈，那么PMI中的某些成分和CQI就是每个子带反馈1个，每个子带反馈1个或者2个CQI。
上面的反馈机制能应用于单TRP/panel/beam传输。然而，如果需要多个TRP，panel或者多beam同时传输给一个用户数据时，上述机制就会出现一些问题。比如对于CSI测量反馈，UE只反馈的是一个CRI，而一个CRI对应的是一个CSI-RS resource，该resource只配置了1个TCI，且这个TCI下只包含了1个RS对应的是QCL type D(Spatial Rx parameter)，即只对应了1个波束。如果基站调度的是多beam传输，UE反馈的CSI就不太准确(因为反馈是假定单beam传输的)，从而导致调度和实际信道直接的不匹配，进一步会影响数据发送质量。
针对相关技术中存在的上述情况，目前尚未发现有效的解决方案。
发明内容
本申请实施例提供了一种信息反馈方法及装置，存储介质，电子装置。
根据本申请的一个实施例，提供了一种信息反馈方法，包括：根据一个CSI上报配置，确定N个反馈信息，其中，所述反馈信息至少包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数；其中，N为大于或者等于1的整数；向基站发送N个所述反馈信息。
根据本申请的一个实施例，提供了另一种信息反馈方法，包括：接收终端UE发送的根据一个CSI上报配置的N个反馈信息，其中，所述反馈信息至少包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数。
根据本申请的另一个实施例，提供了一种信息反馈装置，包括：确定模块，设置为根据一个CSI上报配置，确定N个反馈信息，其中，所述反馈信息至少包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数；发送模块，设置为向基站发送N个反馈信息。
根据本申请的一个实施例，提供了另一种信息反馈装置，包括：接收模块， 设置为接收终端UE发送的根据一个CSI上报配置的N个反馈信息，其中，所述反馈信息至少包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数。
根据本申请的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本申请的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
附图概述
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是本申请实施例的网络构架图；
图2是根据本申请实施例的一种信息反馈的流程图；
图3是根据本申请实施例的另一种信息反馈的流程图；
图4是根据本申请实施例的一种信息反馈装置的结构框图；
图5是根据本申请实施例的另一种信息反馈装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
本申请实施例可以运行于图1所示的网络架构上，图1是本申请实施例的网络构架图，如图1所示，该网络架构包括：基站、终端，其中，基站与之间终端进行交互。
在本实施例中提供了一种运行于上述网络架构的一种信息反馈方法，图2是根据本申请实施例的一种信息反馈的流程图，如图2所示，该流程包括如下 步骤S202和步骤S204。
在步骤S202中，根据一个CSI上报配置，确定N个反馈信息。
其中，反馈信息至少包括：秩指示(Rank Indication，RI)，预编码指示(Precoding Matrix Indication，PMI)，反馈的非零宽带幅度系数；其中，N为大于或者等于1的整数。在步骤S204中，向基站发送N个反馈信息。
通过上述步骤，针对一个CSI上报配置确定N个反馈信息，并发送给基站，从而终端与基站之间可以支持多panel/beam/TRP同时传输，可以匹配调度信道和实际信道，解决了相关技术中CSI反馈不准确的技术问题，扩大了通讯系统的应用场景。
在一实施例中，上述步骤的执行主体可以为终端，如手机，车载设备等，但不限于此。
在本实施例中提供了一种运行于上述网络架构的另一种信息反馈方法，图3是根据本申请实施例的另一种信息反馈的流程图，如图3所示，该流程包括如下步骤S302。
在步骤S302中，接收终端UE发送的根据一个CSI上报配置的N个反馈信息。
其中，反馈信息包括：秩指示RI、预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数。在一实施例中，上述步骤的执行主体可以为网络侧，如基站等，但不限于此。
在一实施例中，本实施例中的根据一个CSI上报配置，可以理解为针对一个CSI上报配置。
在一实施例中，在N个RI之和小于或等于4的情况下，反馈信息还包括1个信道质量指示(Channel quality indicator，CQI)；在N个RI之和大于4的情况下，反馈信息还包括2个CQI。
在本实施例中，N个反馈信息是指，N个RI，N个PMI，N个反馈的非零宽带幅度系数。
在一实施例中，N等于信道状态信息参考信号资源指示CRI对应的信道状态信息参考信号资源CSI-RS resource中配置的传输配置指示TCI里包含的准共位置QCL集合个数，其中，反馈信息还包括CRI。在一实施例中，CRI的个数为1。在一实施例中，一个CSI-RS resource中配置的传输配置指示TCI的个数为1。
在一实施例中，N等于CRI对应的CSI-RS resource中配置的TCI的个数，其中，反馈信息还包括CRI。在一实施例中，CRI的个数为1。在一实施例中，一个TCI中包含的准共位置QCL集合个数为1。
在一实施例中，N等于CRI的个数，其中，反馈信息还包括CRI。在一实施例中，CSI-RS资源集合中的所有CSI-RS resource里配置的QCL集合个数都等于1。或者说，CSI-RS资源集合中的所有CSI-RS resource里配置的TCI的个数都为1，而且每个TCI中包含的QCL集合个数都等于1。
在一实施例中，N的最大取值由高层信令通知给终端UE。UE在N的最大取值的范围下，根据上述策略至少之一选择一个合适的N。
在一实施例中，在CSI-RS resource set中配置的CSI-RS resource只有1个的情况下，反馈信息不包括CRI。CRI对应的CSI-RS resource就是CSI-RS resource set中包含的CSI-RS资源。
在一实施例中，RI反馈的开销由CSI-RS resource set下TCI里包含QCL集合个数最多的CSI-RS resource决定。
在一实施例中，RI反馈的开销由CSI-RS resource set下配置TCI个数最多的CSI-RS resource决定。
在一实施例中，N个RI通过同一个信令(如索引)联合反馈。
在一实施例中，在N>1的情况下，第1个PMI设置在CSI部分2中，第2个PMI设置在CSI部分3中。
在一实施例中，N个反馈信息之间一一对应。包括，N个RI，N个PMI，N个反馈的非零宽带幅度系数之间一一对应，在示例性的场景中，还包括N个CRI。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，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的方法。
实施例2
在本实施例中还提供了一种信息反馈装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图4是根据本申请实施例的一种信息反馈装置的结构框图，如图4所示，该装置包括：确定模块40和发送模块42。
确定模块40，设置为根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，反馈信息包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数。
发送模块42，设置为向基站发送N个反馈信息。
图5是根据本申请实施例的另一种信息反馈装置的结构框图，如图5所示，该装置包括：接收模块50。
接收模块50，设置为接收终端UE发送的根据一个信道状态信息CSI上报配置的N个反馈信息，其中，反馈信息包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数，其中，N为大于或者等于1的整数。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例3
本实施例包括多个实施方式，用于对本申请的方案进行详细说明：
实施方式1-1:
NR下个版本可能要引入多beam，panel或者TRP同时对UE进行数据传输时，如果只反馈1个CRI，而1个CRI对应的CSI-RS resource中只配置了1个TCI配置，且每个TCI配置中只包含了一个QCL集合，1个QCL集合就对应1个beam，panel or TRP，这就使得反馈和实际调度不匹配。
对于TypeI codebok，为了在多TRP/panel/beam传输下提高信道状态质量测量反馈的精度，对于一个CSI上报配置，针对一个CSI-RS resource set基站可以配置UE反馈最多N个CRI，N的值由高层信令配置(一般是无线资源控制(Radio Resource Control，RRC)信令，媒体访问控制(Medium Access Control，MAC)信令也不排除)。不同的CSI上报配置，配置的N可以不同。比如针对CSI上报配置0链接的CSI-RS resource set 0，配置N＝1，而针对CSI上报配置1链接的 CSI-RS resource set 1，N＝2。N的值可以配置在CSI report下，不同的CSI report下配置的N值可以不同。在高层配置N以后，UE需要从CSI-RS resource set中的M个CSI-RS resource挑选最多N个CSI-RS resource上报给基站，即上报最多N个CRI。不一定总是N，可以小于N。例如一个CSI-RS resource set中包含4个CSI-RS resources(CSI-RS resource0，1，2，3)，基站在CSI report配置(CSI-ReportConfig)配置的N＝2，则UE可能反馈CRI的组合如表1所示，有10中可能性Index 0-9。Index 0,4,7,9指示UE只反馈了1个CRI。所以多个CRI可以联合反馈。
表1：联合上报最多N个CRI
CRI index CRI0 CRI1
0 CSI-RS resource 0
1 CSI-RS resource 0 CSI-RS resource 1
2 CSI-RS resource 0 CSI-RS resource 2
3 CSI-RS resource 0 CSI-RS resource 3
4 CSI-RS resource 1
5 CSI-RS resource 1 CSI-RS resource 2
6 CSI-RS resource 1 CSI-RS resource 3
7 CSI-RS resource 2
8 CSI-RS resource 2 CSI-RS resource 3
9 CSI-RS resource 3
如果CRI index对应的CRI的个数实际是N1，那么UE需要反馈N1个RI。
这N1个RI可以联合反馈，也可以和CRI index联合反馈。比如一个UE最大支持RI＝4，即N1个RI之和最大不能超过4。联合反馈CRI和RI可以参考如表2。
表2联合上报多个CRI和RI
index CRI0 CRI1 RI0 RI1
0 CSI-RS resource 0 1
0 CSI-RS resource 0 2
0 CSI-RS resource 0 3
0 CSI-RS resource 0 4
4 CSI-RS resource 0 CSI-RS resource 1 1 1
5 CSI-RS resource 0 CSI-RS resource 1 1 2
6 CSI-RS resource 0 CSI-RS resource 1 2 1
7 CSI-RS resource 0 CSI-RS resource 1 2 2
8 CSI-RS resource 0 CSI-RS resource 1 3 1
9 CSI-RS resource 0 CSI-RS resource 1 1 3
... ... ... ... ...
不同的CRI可以被理解为不同的Panel，beam or TRP，所以不同的CRI应该对应不同的PMI传输。当然实际传输的多个PMI可以进行联合传输。
如果上报的多个RI之和不大于4时，这多个Panel/beam/TRP可能是共同传输相同的TB给UE，为了获得更精准的CQI，那么这多个CRI,RI，PMI应该对应同一个CQI。也就是说，N1个CRI,RI,PMI只对应1个CQI。而如果上报的多个RI之和大于4时，就需要2个CQI。这里假定的是宽带PMI和CQI。如果是子带PMI和CQI传输，针对每个子带，UE需要反馈N1子带PMI，一个或者2个CQI(如果上报的多个RI之和大于4时，就需要2个CQI，如果上报的多个RI之和不大于4时，就需要1个CQI)。
在一实施例中，可以将联合反馈的CRI,RI和第一个CQI在CSI part 1中反馈，所有多个PMI和第二个CQI(如果存在)在CSI part 2中反馈。CSI part1和part2独立编码。CSI part 1的反馈内容决定CSI part 2的大小。这是因为 不同的CRI个数，RI个数及大小决定PMI的反馈开销。CSI part 1的大小必须固定，即UE和基站都知道。当基站解调完CSI part 1后，CSI part 2的内容大小才能得知。
在一实施例中，UE可以单独反馈最多N个CRI。
在一实施例中，UE也可以单独反馈最多N个RI。
实际中，反馈CRI的个数决定了RI的个数，PMI的个数，总的RI的和决定了CQI的个数，而且一个RI的大小决定了对应PMI的反馈开销。为了实现简单，且固定一部分CSI反馈大小，可以有如下方案。
方案1：CSI分成2部分
CSI part 1包括：所有的CRI上报，所有的RI上报，以及第一个CQI。
其中，CRI可以联合上报或者单独上报；
RI可以联合上报或者单独上报；
CRI和RI可以联合上报或者单独上报。
CSI part 2包括：PMI(PMI的个数跟CRI个数相同)以及第二个CQI(如果所有RI之和大于4才有第二个CQI)。
方案2：CSI分成2部分
CSI part 1包括：CRI的总个数，第一个CRI，第一个RI，以及第一个CQI。
CSI part 2包括：其余CRI(如果CRI总个数大于1)，其余RI(如果CRI总个数大于1)，PMI(PMI的个数跟CRI个数相同)以及第二个CQI(如果所有RI之和大于4)。
方案3：CSI分成2部分
CSI part 1包括：所有CRI，第一个RI，以及第一个CQI。
CSI part 2包括：剩余RI，PMI(PMI的个数跟CRI个数相同)以及第二个CQI(如果所有RI之和大于4)。
方案4：CSI分成3部分
CSI part 1包括：所有CRI，第一个RI，以及第一个CQI。
CSI part 2包括：第一个CRI对应的PMI，以及第二个CQI。
CSI part 3包括：剩余的RI，PMI。
在一实施例中，CSI part 2和part 3可以互换。
方案5：CSI分成2N1部分
CSI part 1包括：第一个CRI,第一个RI，以及第一个CQI。在一实施例中， CSI part 1也可以包括CRI的总个数。
CSI part 2包括：第一个CRI对应的PMI，以及第二个CQI。
CSI part 3包括：第2个CRI,第2个RI。
CSI part 4包括：第2个CRI对应的PMI。
如果CRI的总个数不大于1，那么就只有CSI part 1，2。
CSI part 5包括：第3个CRI，第3个RI。
CSI part 6包括：第3个CRI对应的PMI。
如果CRI的总个数等于2，那么就只有CSI part 1-4。
...
对上述方案总结，即UE反馈最多N个CRI，N的由高层信令设置；
所有CRI可以联合反馈或者单独反馈，每个CRI对于一个RI，所有RI可以联合反馈或者单独反馈，CRI和RI可以联合反馈或者单独反馈，每个CRI对于一个PMI，所有PMI可以联合反馈或者单独反馈，如果RI之和小于或者等于4,就反馈1个CQI(如果是子带反馈，对于每个子带都反馈1个CQI)；否则就反馈2个CQI(如果是子带反馈，对于每个子带都反馈2个CQI)。
实施方式1-2:
在相关技术的NR协议中，对于codebook type II,CSI Part 1包括RI,CQI,还有针对每个Layer的非零宽带幅度系数的个数(an indication of the number of non-zero wideband amplitude coefficients per layer for the Type II CSI)；Part 2包含the PMI of the Type II CSI.Part 1 and 2独立编码。
类似于实施例1-1所述的方法，
可以反馈最多N个CRI，N的由高层信令设置；
所有CRI可以联合反馈或者单独反馈；
每个CRI对于一个RI；
每个CRI对于一个非零宽带幅度系数的个数；
每个CRI对于一个PMI；
如果RI之和小于4,就反馈1个CQI；否则就反馈2个CQI。
实施方式2-1:
对于codebook Type I，为了在多TRP/panel/beam传输下提高信道状态质量 测量反馈的精度，可以在CSI-RS resource的TCI(每个CSI-RS resource中配置一个TCI)中配置多个QCL集合，即qcl-set，每个QCL集合可以包含N个qcl-Type，比如1个或者2个。如果一个CSI-RS resource set是用于CSI测量反馈的，那么该set下包含1个或者多个CSI-RS resources，不同的CSI-RS resource的TCI中包含的QCL集合个数可以不同。经过信道测量，UE会挑选信道质量最强的一个CSI-RS resource，该CSI-RS resource对应UE反馈的CRI。也就是说，对于一个CSI上报配置，如果CRI对应的CSI-RS resource中配置的TCI包含的QCL集合个数为N，那么UE需要反馈N个RI。这个N个RI之和不会超过UE所能支持的最大的RI的能力。这N个反馈的RI和TCI中包含的N个QCL集合一一对应。此时假定每个CSI-RS resource中都只配置一个TCI，但是不同CSI-RS resource下配置的TCI中包含的QCL集合个数可以不同。
在一实施例中，如果CRI对应的CSI-RS resource中配置的TCI包含的QCL集合个数为N，且反馈类型中包括PMI的反馈，那么UE需要反馈N个PMI。这N个反馈的PMI和TCI中包含的N个QCL集合一一对应，也和反馈的N个RI一一对应。针对不同的codebook设置，PMI包含的成分可以不同。比如针对Type I Single-Panel Codeboo，PMI可能包括i1,i2,LI等参数中的一个或者多个，而i1又可以分解成多个成分，比如包含i 11,i 12,i 13。这些在NR协议38.214上有描述。为了简单化，N个PMI可以联合反馈。
在一实施例中，如果这N个RI之和超过4，那么UE需要反馈2个CQI，即对于子带CQI反馈，UE需要对于每个子带反馈2个CQI，而对于宽带CQI反馈，UE只需要反馈2个CQI对应整个配置带宽。如果这N个RI之和没有超过4，那么UE只需要反馈1个CQI，即对于子带CQI反馈，UE需要对于每个子带反馈1个CQI，而对于宽带CQI反馈，UE只需要反馈1个CQI对应整个配置带宽。
在一实施例中，可以将CRI，N个RI的反馈信息以及第1个CQI在CSI part1中反馈；将第2个CQI(如果存在)，PMI在CSI part 2中反馈。此处PMI的个数跟N的个数相等。比如UE0支持的最大RI＝8，如果反馈的CRI对应的CSI-RS resource的TCI中包含2个QCL集合，那么RI的配置可以如表3所示，只需要5bits，用index 0-28就可以指示任意2个RI的组合。此时，为了简单化，CSI part 1包含RI的index，CRI以及第一个CQI；而CSI part 2包含PMI,以及第二个CQI。此处PMI的个数跟N的个数相等。当然为了更实际的调度，可以限制 两个QCL集合对应的RI的某些组合，比如对于总RI＝8时，可以删除1，7的组合。当然此时，N个RI也可以独立反馈。由于N个RI的反馈信息在CSI part1中，而CSI part1的Payload需要固定，那么在CSI part 1中的RI的反馈开销应该按照CSI-RS resource set中所有CSI-RS resource的配置的N的最大值来计算。也就是说，RI反馈的开销由CSI-RS resource set下TCI里包含QCL集合个数最多的CSI-RS resource决定。比如CSI-RS resource set下配置了4个CSI-RS resource，分别为CSI-RS resource 0,1,2,3,而且这4个CSI-RS resource下配置的TCI里包含的QCL集合个数分别为1，2，3，1。那么RI的反馈开销就是基于CSI-RS resource 3来决定的，即使UE最终反对的CRI是0(对应CSI-RS resource 0)。如果N个RI独立反馈，且反馈一个RI需要x bits，那么这种情况下需要3x bits来反馈RI。这里假定CSI-RS resource set下的所有CSI-RS resource都只配置1个TCI。
还有一种可能，就是将CRI，N个RI，第一个CQI放在CSI part 1中，将第一个PMI，第二个CQI(如果存在)放在CSI part 2中，然后将第2个以及剩余的PMI放在CSI part 3中(如果N>1)或者将第i个PMI放在CSI part i+1中(i小于等于N)。各个CSI part是独立编码的。
表3：反馈N＝2个RI
Figure PCTCN2019082846-appb-000001
Figure PCTCN2019082846-appb-000002
Figure PCTCN2019082846-appb-000003
在一实施例中，反馈的CRI，N个RI中的某一个，第一个CQI是CSI的第一部分，即CSI part 1；其余RI,CQI(如果存在)以及PMI是CSI的第二部分，即CSI part 2。
在一实施例中，CSI part 1包括CRI，N个RI之和，以及第一个CQI；而CSI part 2包含第二个CQI(如果存在)，PMI。CSI part 2还可以包含区分不同QCL集合对应的RI的信息。比如UE0支持的最大RI＝8，CSI part 2中包含的RI就是第1个QCL集合对应的RI，表示为RI_1，第2个QCL集合对应RI的大小就等于8-RI_1。
综合的，就是针对TCI中的N个QCL集合反馈N个RI，PMI，然后基于这N个RI，PMI来计算CQI，这个CQI是由N个RI，PMI共同计算出来的。N是正整数，可以是1，2，或者4等。每个CSI-RS resource的TCI里N值的大小可以不同，由高层信令配置。基站在接收到UE反馈的CRI，N个RI，N个PMI和1个或者2个CQI后，在N个beam/panel/TRP上对应应用反馈的N个RI，PMI来传输数据，而该数据块的大小就可以由反馈的CQI来确定。所以，针对多beam/panel/TRP同时传输，本文所述的方法引入了对应的反馈，精确度大大提高了。本文所述的1个CQI是针对一个码字的，2个CQI是针对2个码字的。如果是子带反馈，每个子带都可能反馈1个或者2个CQI。PMI的反馈也可能是子带的。
如果反馈的CRI对应的CSI-RS resource内包含的QCL sets是3个，那么：
如果第1个RI和第2个RI之和不超过4，那么第一个CQI就对应前2个RI和对应的PMI；最后1个RI和对应的PMI对应第2个CQI。
如果第2个RI和第3个RI之和不超过4，那么第一个CQI就对应第2个和第3个RI和对应的PMI；剩余的1个RI和对应的PMI对应第2个CQI。
如果第1个RI和第3个RI之和不超过4，那么第一个CQI就对应第1个和第3个RI和对应的PMI；剩余的1个RI和对应的PMI对应第2个CQI。
或者说，3个QCL sets中的任何2个对应的RI之和如果不超过4，那么这2个RI和对应的PMI就对应第1个CQI，剩余的RI和对应的PMI就对应第2个CQI。在一实施例中，3个QCL sets中的任何2个对应的RI之和如果不超过4，那么这2个RI和对应的PMI就对应第2个CQI，剩余的RI和对应的PMI 就对应第1个CQI。
如果反馈的CRI对应的CSI-RS resource内包含的QCL sets是4个，那么：
那么前2个QCL sets对应第1个CQI，后2个QCL sets对应第2个CQI。
简单的对上述方案进行总结，即如果反馈的CRI对应的CSI-RS resource配置一个TCI，包含N个RS sets或者QCL sets，UE反馈N个RI分别对应N个RS sets/QCL sets，N个RI可以联合反馈或者单独反馈，如果N个RI之和小于或者等于4，就反馈1个CQI；否则就反馈2个CQI。
实施方式2-2:
在目前的NR协议中，对于codebook type II，CSI Part 1包括RI,CQI,还有针对每个Layer的非零宽带幅度系数的个数(an indication of the number of non-zero wideband amplitude coefficients per layer for the Type II CSI)。Part 2包含the PMI of the Type II CSI.Part 1 and 2独立编码。
类似于实施例2-1所述的方法，
如果CSI-RS resource配置一个TCI,且TCI中包含N个RS sets或者QCL sets，反馈N个RI分别对应N个RS sets/QCL sets，N个RI可以联合反馈或者单独反馈；
反馈N个非零宽带幅度系数的个数(和N个RS sets/QCL sets分别一一对应)；
反馈N个PMI分别对应N个RS sets；
如果N个RI之和小于或者等于4，就反馈1个CQI；否则就反馈2个CQI。
实施方式3:
如果一个TCI中的QCL sets的个数始终是1个，那么上述实施例2-1就不能工作了。一种减少CSI-RS开销，并且能获得多beam/panel/TRP同时传输的精确CSI的方法就是给一个CSI-RS resource可以配置超过1个TCI。在实际传输下行业务信道(Physical Downlink Shared Channel，PDSCH)时，可能也需要给PDSCH或者DMRS配置多个TCI。所以，如果一个CSI-RS resource set是用于CSI测量反馈的，那么该CSI-RS resource set下包含1个或者多个CSI-RS resources，不同的CSI-RS resource的配置中包含的TCI的个数可以不同，比如有些CSI-RS resource配置的TCI个数是1，而有些CSI-RS resource配置的TCI个数可以大于1，比如是2。经过信道测量，UE会挑选信道质量最强的一个CSI-RS resource,该CSI-RS resource对应UE反馈的CRI。也就是说，对于一个 CSI上报配置，如果CRI对应的CSI-RS resource中配置的TCI的个数为N，那么UE需要反馈N个RI。并且N个RI对应N个PMI。如果N个RI之和不大于4，那么就只反馈1个CQI，否则就反馈2个CQI。这N个RI可以联合编码或者独立编码。
类似的，对于Type II codebook，
如果CSI-RS resource配置N个TCI；
反馈N个RI分别对应N个TCI；
N个RI可以联合反馈或者单独反馈；
反馈N个非零宽带幅度系数的个数(和N个TCI一一对应)；
反馈N个PMI分别对应N个TCI一一对应；
如果N个RI之和小于或者等于4，就反馈1个CQI；否则就反馈2个CQI
对于type II codebook的设计，目前没有CRI反馈，也就是说CSI-RS resource中只配置了1个CSI-RS resource。
如果N个RI的反馈信息在CSI part1中，而CSI part1的Payload需要固定，那么在CSI part 1中的RI的反馈开销应该按照CSI-RS resource set中所有CSI-RS resource的配置的N的最大值来计算。也就是说，RI的反馈开销由CSI-RS resource set下配置TCI个数最多的CSI-RS resource决定。
对于上述所有实施例，如果CSI-RS resource set中配置的CSI-RS resource个数是1，那么CRI反馈是不需要的。此时N的个数由这个CSI-RS resource下配置的TCI的个数和TCI下配置的QCL集合的个数决定。
对于上述所有方案，可以总结出，N的个数由反馈的CRI的个数，CRI对应的CSI-RS resource(s)中包含的TCI的个数，以及这些TCI下包含的QCL集合的个数决定。简单的，N等于反馈的所有CRI对应的CSI-RS resource(s)中包含的QCL集合的总个数。即针对一个信道状态信息CSI上报配置，确定N个反馈信息，N等于反馈的所有CRI对应的CSI-RS resource(s)中配置的所有TCI包含的QCL集合的总个数。其中，所述反馈信息包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数；其中，N为大于或者等于1的整数；在N个RI之和小于或等于4的情况下，所述反馈信息还包括1个信道质量指示CQI；而且，在N个RI之和大于4的情况下，所述反馈信息还包括2个CQI。
实施例4
本申请的实施例还提供了一种存储介质，该存储介质中存储有计算机程序， 其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
在一实施例中，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤S1和步骤S2的计算机程序。
在步骤S1中，根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，所述反馈信息包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数；其中，N为大于或者等于1的整数。
在步骤S2中，向基站发送N个所述反馈信息。
在一实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本申请的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
在一实施例中，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
在一实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤S1和步骤S2。
在步骤S1中，根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，所述反馈信息包括：秩指示RI，预编码指示PMI，反馈的非零宽带幅度系数；其中，N为大于或者等于1的整数。
在步骤S2中，向基站发送N个所述反馈信息。
在一实施例中，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本申请的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，在一实施例中，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本申请不限制于任何特定的硬件和软件结合。

Claims (38)

  1. 一种信息反馈方法，包括：
    根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，所述N个反馈信息包括：N个秩指示RI和N个预编码指示PMI；其中，N为大于或者等于1的整数；
    向基站发送所述N个反馈信息。
  2. 根据权利要求1所述的方法，其中，所述N个反馈信息还包括：N个反馈的非零宽带幅度系数的个数。
  3. 根据权利要求2所述的方法，其中，在N个RI之和小于或等于4的情况下，所述N个反馈信息还包括1个信道质量指示CQI；
    在N个RI之和大于4的情况下，所述N个反馈信息还包括2个CQI。
  4. 根据权利要求2或3所述的方法，其中，N等于信道状态信息参考信号资源指示CRI对应的信道状态信息参考信号资源CSI-RS resource中配置的传输配置指示TCI里包含的准共位置QCL集合个数，其中，所述N个反馈信息还包括所述CRI，其中，CRI对应的CSI-RS resource为信道状态信息参考信号资源配置CSI-RS resource set中包含的CSI-RS资源。
  5. 根据权利要求2或3所述的方法，其中，N等于CRI对应的CSI-RS resource中配置的TCI的个数，其中，所述N个反馈信息还包括所述CRI，其中，CRI对应的CSI-RS resource为CSI-RS resource set中包含的CSI-RS资源。
  6. 根据权利要求2或3所述的方法，其中，N等于CRI的个数，所述N个反馈信息还包括所述CRI。
  7. 根据权利要求4或5所述的方法，其中，所述CRI的个数为1。
  8. 根据权利要求6所述的方法，其中，CSI-RS资源集合中的所有CSI-RS resource里配置的QCL集合个数都等于1。
  9. 根据权利要求6所述的方法，其中，N的最大取值由高层信令通知给终端UE。
  10. 根据权利要求4至9任一项所述的方法，其中，在CSI-RS resource set中配置的CSI-RS resource只有1个的情况下，所述N个反馈信息不包括所述CRI。
  11. 根据权利要求4所述的方法，其中，RI反馈的开销由CSI-RS resource set下TCI里包含QCL集合个数最多的CSI-RS resource决定。
  12. 根据权利要求5所述的方法，其中，RI反馈的开销由CSI-RS resource set下配置TCI个数最多的CSI-RS resource决定。
  13. 根据权利要求2所述的方法，其中，N个RI通过同一个信令联合反馈。
  14. 根据权利要求2所述的方法，其中，在N>1的情况下，第1个PMI设置在CSI部分2中，第2个PMI设置在CSI部分3中。
  15. 根据权利要求2所述的方法，其中，N个所述RI，N个所述PMI，与N个所述反馈的非零宽带幅度系数的个数之间一一对应。
  16. 一种信息反馈方法，包括：
    接收终端UE发送的根据一个CSI上报配置的N个反馈信息，其中，所述N个反馈信息包括：N个秩指示RI和N个预编码指示PMI，其中，N为大于或者等于1的整数。
  17. 根据权利要求16所述的方法，其中，所述N个反馈信息还包括：N个反馈的非零宽带幅度系数的个数。
  18. 根据权利要求17所述的方法，其中，在N个RI之和小于或等于4的情况下，所述N个反馈信息还包括1个信道质量指示CQI；在N个RI之和大于4的情况下，所述N个反馈信息还包括2个CQI。
  19. 根据权利要求17或18所述的方法，其中，N等于信道状态信息参考信号资源指示CRI对应的信道状态信息参考信号资源CSI-RS resource中配置的传输配置指示TCI里包含的准共位置QCL集合个数，其中，所述N个反馈信息还包括所述CRI，其中，CRI对应的CSI-RS resource为信道状态信息参考信号资源配置CSI-RS resource set中包含的CSI-RS资源。
  20. 根据权利要求17或18所述的方法，其中，N等于CRI对应的CSI-RS resource中配置的TCI的个数，其中，所述N个反馈信息还包括所述CRI，其中，CRI对应的CSI-RS resource为CSI-RS resource set中包含的CSI-RS资源。
  21. 根据权利要求17或18所述的方法，其中，N等于CRI的个数，其中，所述N个反馈信息还包括所述CRI。
  22. 根据权利要求19或20所述的方法，其中，所述CRI的个数为1。
  23. 根据权利要求21所述的方法，其中，CSI-RS资源集合中的所有CSI-RS resource里配置的QCL集合个数都等于1。
  24. 根据权利要求21所述的方法，其中，N的最大取值由高层信令通知给终端UE。
  25. 根据权利要求19至24任一项所述的方法，其中，在CSI-RS resource set中配置的CSI-RS resource只有1个的情况下，所述N个反馈信息不包括所述CRI。
  26. 根据权利要求19所述的方法，其中，RI反馈的开销由CSI-RS resource set下TCI里包含QCL集合个数最多的CSI-RS resource决定。
  27. 根据权利要求20所述的方法，其中，RI反馈的开销由CSI-RS resource set下配置TCI个数最多的CSI-RS resource决定。
  28. 根据权利要求17所述的方法，其中，其中，N个RI通过同一个信令联合反馈。
  29. 根据权利要求17所述的方法，其中，在N>1的情况下，第1个PMI设置在CSI部分2中，第2个PMI设置在CSI部分3中。
  30. 根据权利要求17所述的方法，其中，N个所述RI，N个所述PMI，N个所述反馈的非零宽带幅度系数的个数之间一一对应。
  31. 一种信息反馈装置，包括：
    确定模块，设置为根据一个信道状态信息CSI上报配置，确定N个反馈信息，其中，所述N个反馈信息包括：N个秩指示RI和N个预编码指示PMI，其中，N为大于或者等于1的整数；
    发送模块，设置为向基站发送N个反馈信息。
  32. 根据权利要求31所述的装置，其中，所述N个反馈信息还包括：N个反馈的非零宽带幅度系数的个数。
  33. 一种信息反馈装置，包括：
    接收模块，设置为接收终端UE发送的根据一个信道状态信息CSI上报配置的N个反馈信息，其中，所述N个反馈信息包括：N个秩指示RI和N个预编码指示PMI，其中，N为大于或者等于1的整数。
  34. 根据权利要求33所述的装置，其中，所述N个反馈信息还包括：N个反馈的非零宽带幅度系数的个数。
  35. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至15任一项中所述的方法。
  36. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求16至30任一项中所述的方法。
  37. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至15任一项中所述的方法。
  38. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程 序，所述处理器被设置为运行所述计算机程序以执行所述权利要求16至30任一项中所述的方法。
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