WO2022028549A1 - 信道状态信息反馈方法、装置、设备和存储介质 - Google Patents
信道状态信息反馈方法、装置、设备和存储介质 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 100
- 230000005540 biological transmission Effects 0.000 claims abstract description 112
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- 238000004891 communication Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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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]
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- 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
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- 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
Definitions
- the present application relates to the field of communication technologies, for example, to a channel state information feedback method, apparatus, device, and storage medium.
- the base station In the field of communications, for broadcast multicast services, the base station often needs to send a Physical Downlink Shared Channel (PDSCH) to a group of users.
- PDSCH Physical Downlink Shared Channel
- the base station In order to ensure the reliability of transmission, the base station needs to refer to the channel state information (Channel State Information, CSI) feedback of a group of users, so as to obtain a link adaptation effect suitable for a group of users.
- CSI Channel State Information
- the base station needs to determine several transmission attributes for a group of users according to the channel state information fed back by each user, such as Modulation and Coding Scheme (MCS), precoding information, layer information and ports information, etc.
- MCS Modulation and Coding Scheme
- the channel state information fed back by the terminal to the base station may be relatively small, which is not enough to support the base station to make scheduling based on the feedback of a group of users , in order to adapt to multicast and broadcast services, it is necessary to enhance the user's channel state information measurement and feedback mechanism, so that a group of users can feed back more abundant information to the base station and improve the accuracy of the scheduling decision made by the base station based on a group of users .
- Embodiments of the present application provide a channel state information feedback method, apparatus, device, and storage medium, so as to realize channel state information feedback, enrich feedback content, enhance channel state information measurement, and improve the accuracy of base station scheduling decisions.
- the embodiment of the present application provides a channel state feedback method, and the method includes:
- the embodiment of the present application also provides a channel state information feedback device, and the device includes:
- an information measurement module for measuring channel state information CSI
- a feedback sending module configured to send the CSI feedback corresponding to the parameter set according to the channel state information.
- the embodiment of the present application also provides a device, the device includes:
- processors one or more processors
- memory for storing one or more programs
- the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the channel state information feedback method described in any one of the embodiments of this application.
- An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, implements the channel state information feedback method described in any one of the embodiments of the present application.
- the terminal measures the channel state information according to the channel state information parameter set, and then feeds back the acquired channel state information to the base station, so as to realize the feedback of the channel state information.
- the channel state information parameter set is used to enrich the feedback content and enhance the channel state. The measurement of state information improves the accuracy of base station scheduling decisions.
- FIG. 1 is a flowchart of a method for feeding back channel state information provided by an embodiment of the present application
- FIG. 2 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 3 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 4 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 5 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 6 is a flowchart of a channel state information feedback method provided by an embodiment of the present application.
- FIG. 7 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 8 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 9 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 10 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 11 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a channel state information feedback device provided by an embodiment of the present application.
- FIG. 14 is a schematic structural diagram of a device provided by an embodiment of the present application.
- aperiodic CSI feedback it is triggered by the PDCCH that schedules uplink data.
- the triggered aperiodic CSI feedback and uplink data are both carried in the uplink physical shared channel (Physical Uplink Shared Channel, PUSCH). Therefore, it can be considered that aperiodic CSI feedback is transmitted.
- the time-frequency resources are indicated by the Time Domain Resource Allocation (TDRA) domain and the Frequency Domain Resource Allocation (FDRA) domain in the DCI for scheduling uplink data.
- TDRA Time Domain Resource Allocation
- FDRA Frequency Domain Resource Allocation
- the terminal feeds back in PUCCH, and the base station will semi-statically configure PUCCH resources for periodic CSI feedback through Radio Resource Control (RRC) signaling.
- RRC Radio Resource Control
- For semi-persistent CSI feedback there are two bearer modes: one is the semi-persistent CSI feedback activated and deactivated by the Medium Access Control-Control Element (MAC CE), which is carried on PUCCH; One is activated and deactivated by the PDCCH, and is carried on the PUSCH scheduled by the PDCCH.
- the bearing resources of the former mode are similar to periodic CSI feedback, and are borne on PUCCH resources semi-statically configured by the base station.
- the bearing source of the latter mode is similar to the aperiodic CSI feedback, and is borne on the PUSCH resources indicated by the TDRA field and the FDRA field of the PDCCH.
- the base station can only perform link adaptation in a conservative manner.
- the base station will configure many sub-signals related to the channel state information report CSI Report in the RRC signaling channel state information-report configuration CSI-ReportConfig, as well as the reference signal (Reference Signal, RS) resource configuration for measurement.
- CSI Report in the RRC signaling channel state information-report configuration CSI-ReportConfig, as well as the reference signal (Reference Signal, RS) resource configuration for measurement.
- RS Reference Signal
- the RS resource configuration can include one or more RS resource configuration sets RS, a) for the A-CSI feedback that needs to be triggered by the DCI sent by the base station, the CSI feedback field of the DCI will indicate a trigger state trigger state, the The trigger state will be associated with one or more channel state information-associated report configuration information CSI-AssociatedReportConfigInfo, each CSI-AssociatedReportConfigInfo will indicate which RS resource configuration set in the RS resource configuration is based on the associated CSI Report to measure, and indicate the Beam information used by each RS resource in the RS configuration set.
- CSI-AssociatedReportConfigInfo each CSI-AssociatedReportConfigInfo will indicate which RS resource configuration set in the RS resource configuration is based on the associated CSI Report to measure, and indicate the Beam information used by each RS resource in the RS configuration set.
- the RS resource configuration configured in the CSI-ReportConfig for measurement can only contain 1 RS resource configuration set.
- the CSI Request field of the DCI will indicate a trigger state, and the trigger state is one CSI-ReportConfig.
- the base station does not need to send a trigger indication, and the UE will perform P-CSI feedback as scheduled according to the cycle and feedback resources configured in the relevant CSI-ReportConfig.
- the feedback format corresponding to the CSI Report can be configured through the sub-signaling report quantity reportQuantity of the RRC signaling CSI-ReportConfig, which specifically includes the following feedback formats: None, cri-RI-PMI-CQI, cri-RI-LI- PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RSRP, and ssb-Index-RSRP.
- the feedback format specifies which channel state information should be included in the corresponding CSI Report. How the terminal feeds back information more suitable for multicast broadcast transmission adaptive link to the base station.
- FIG. 1 is a flowchart of a method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application can be applied to a situation in which a terminal feeds back channel state information in multicast broadcast transmission.
- the state information feedback device is implemented.
- the device can be implemented in software and/or hardware.
- the device is generally integrated in a terminal.
- the method provided by the embodiment of the present application specifically includes the following steps:
- Step 100 Measure channel state information CSI.
- the terminal can obtain the channel state information CSI by measuring. It can be understood that the channel state information CSI includes at least one type of channel state information, and the values fed back for each state information in the channel state information may include one or more values.
- Step 110 Send the CSI feedback corresponding to the channel state information parameter set.
- the channel state information parameter set may be used to indicate the set of channel state information that the terminal needs to feed back, and may indicate the type of feedback information, and the channel state information parameter set may include one or more pieces of channel state information, for example, a channel quality indicator (Channel- Quality Indicator, CQI), precoding matrix indicator (Precoding matrix Indicator, PMI), and layer indicator (Rank Indicator, RI), etc.
- CQI Channel- Quality Indicator
- PMI precoding matrix indicator
- RI layer indicator
- the terminal can feed back the acquired channel state information CSI to the base station, so that the base station can make a scheduling policy for a group of users according to the fed back CSI.
- the terminal measures the channel state information, and then feeds back the obtained channel state information to the base station, so as to realize the feedback of the channel state information.
- the accuracy of the scheduling decision of the base station under the broadcast multicast service is the accuracy of the scheduling decision of the base station under the broadcast multicast service.
- FIG. 2 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the above-mentioned embodiment. Referring to the figure, the method provided by the embodiment of the present application specifically includes the following steps :
- Step 200 Measure channel state information CSI.
- Step 210 Determine the CSI feedback corresponding to the channel state information parameter set according to the setting conditions.
- the setting conditions may be detected at the terminal, and the number of feedback values for the channel state information parameter set may be determined according to different detected conditions.
- the base station indicates the number of CSI feedback parameters to the terminal.
- the terminal may extract the value in the CSI feedback number parameter as the feedback number corresponding to the set of channel state information parameters that need to be fed back in the CSI feedback.
- Step 220 Send the CSI feedback corresponding to the channel state information parameter set.
- the setting conditions include at least one of the following:
- the configuration situation of the feedback number parameter may be a situation in which the feedback number corresponding to the channel state information parameter set is determined by means of whether to configure the feedback number parameter.
- the feedback number parameter corresponds to the feedback number of the channel state information parameter set.
- the scrambling situation of receiving the associated downlink control information DCI may be the scrambling situation of the base station sending the DCI to the terminal, because the scrambling method may include the Cell-Radio Network Temporary Identifier (C-RNTI), the configured scheduling RNTI (Configured Scheduling RNTI, CS-RNTI) or Modulation and Coding Scheme-Cell-RNTI (Modulcation and Coding Scheme-Cell-RNTI, MCS-C-RNTI), etc., different scrambling situations can be used to represent the corresponding channel state information parameter sets.
- C-RNTI Cell-Radio Network Temporary Identifier
- the configured scheduling RNTI Configured Scheduling RNTI, CS-RNTI
- Modulation and Coding Scheme-Cell-RNTI
- the scheduling data type identifier in the associated DCI may be the scheduling data type identifier in the DCI received by the terminal, for example, the feedback quantities of the channel state information parameter sets corresponding to the unicast data type and the multicast data type may be different.
- the receiving associated DCI format may be the data format of the DCI received by the terminal.
- the time-frequency domain resources associated with receiving the DCI may be time-domain resources or frequency-domain resources occupied by the DCI received by the terminal, and different time-frequency domain resources may correspond to different channel state information parameter sets.
- the received CSI feedback configuration which can be two CSI configurations with the same content but different indexes are received, or there are multiple CSI feedback configurations with the same preset content, and the preset content can be the common content in the CSI feedback configuration.
- the current terminal determines that the above situation occurs, it may determine that the feedback quantity of the channel state information parameter set is a specific quantity.
- FIG. 3 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment of the above-mentioned embodiment. Referring to FIG. 3 , the method provided by the embodiment of the present application specifically includes the following: step:
- Step 300 Measure channel state information CSI.
- Step 310 Determine the CSI feedback corresponding to the channel state information parameter set according to the setting conditions, the CSI feedback includes at least one CSI report report, and the CSI feedback number parameter of the CSI feedback is configured through RRC signaling in the radio resource control layer.
- the CSI feedback may include one or more CSI reports, where the CSI report may be used to feed back channel state information, and the CSI report includes the value fed back for the channel state information parameter set, and the number of CSI feedback parameters may be used in the CSI report. It is determined that the parameter of the number of CSI feedbacks may be configured through RRC signaling.
- the CSI feedback number parameter of the CSI feedback is configured for a specific CSI report, or the CSI feedback number parameter is configured for all CSI reports.
- one or more CSI reports may be included in the CSI feedback, the number of feedback channel state information may be set by the CSI feedback number parameter, and the number of channel state information parameter sets that may be set by the CSI feedback number parameter may be for CSI feedback.
- One or several specific CSI report settings in the CSI report can also be for all CSI report settings in the CSI feedback.
- Step 320 Send the CSI feedback corresponding to the channel state information parameter set.
- FIG. 4 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the above-mentioned embodiment of the application.
- the channel state information parameter set includes a channel state information. Refer to Fig. 4, the method provided by the embodiment of the present application comprises the following steps:
- Step 400 Determine the CSI feedback corresponding to the channel state information parameter set according to the setting conditions, where the channel state information parameter set includes one channel state information, and the channel state information is based on system predefined configuration and/or RRC signaling configuration.
- the channel state information parameter set includes one channel state information
- the terminal may determine the feedback quantity of the channel state information in combination with the setting conditions.
- one channel state information included in the channel state information parameter set may be configured in a system predefined manner or configured by RRC signaling.
- Step 410 Feed back a set of optimal values for the channel state information parameter set when the CSI feedback number parameter of the CSI feedback indicates that the channel state information parameter set feeds back a set of values.
- the CSI feedback includes a set of channel state information values
- the optimal value can be selected from the multiple sets of values determined in the CSI measurement process A set of values of , as the value of CSI feedback for the channel state information parameter set, where optimal may refer to the value of channel state information reflecting the optimal channel quality or channel throughput, which may be specifically included in a certain One or more of the optimal modulation order, coding rate and transmission block size that can be achieved under the condition of bit error rate.
- Step 420 Send the CSI feedback corresponding to the channel state information parameter set.
- the associated DCI in the CSI feedback includes a DCI for triggering the CSI feedback and/or a DCI for scheduling data transmission.
- the embodiment of the present application is an embodiment based on the above-mentioned embodiment of the application.
- the channel state information parameter set includes a plurality of channel state information. Referring to FIG. 5, the method provided by the embodiment of the present application includes the following steps:
- Step 500 Measure channel state information CSI.
- Step 510 Determine the CSI feedback corresponding to the channel state information parameter set according to the setting conditions, the CSI feedback number parameter of the CSI feedback indicates that the channel state information parameter set feedback at least two sets of values, and the channel state information parameter set includes at least two channel state When there is a dependency relationship between the values of the channel state information, the value of the dependent channel state information is determined based on at least two values of the corresponding dependent channel state information.
- the channel state information parameter set includes a plurality of channel state information, and it is determined that at least two sets of values are fed back for the channel state information parameter set, when one of the plurality of channel state information included in the channel state information parameter set is
- the value of the dependent channel state information needs to be determined by multiple values of the corresponding dependent channel state information.
- the determination of the value of the channel state information parameter 1 depends on the value of the channel state information parameter 2.
- the terminal must feed back several different values for the channel state information parameter 2, and obtain the value of the channel state information parameter 1 under each channel state information parameter 2 value, so that the terminal obtains multiple sets of ⁇ channel state information parameter 1 , the value of the channel state information parameter 2 ⁇ .
- Step 520 In the case where the CSI feedback number parameter of the CSI feedback indicates that the channel state information parameter set feeds back at least two groups of values, feedback the optimal value of the preset number of groups for the channel state information parameter set, wherein , the preset number of groups is a positive integer greater than 1, and the preset number of groups is predefined by the system or configured through the CSI feedback number parameter.
- the channel state information acquired by the sounding may be sorted, and the optimal values of the multiple groups of channel state information may be selected for feedback, wherein,
- the number of feedback groups can be predefined by the system or configured through the CSI feedback number parameter.
- Optimal may refer to the value of the channel state information reflecting the optimal channel quality or channel throughput, and may specifically be the corresponding modulation order, coding rate and transmission block size under the condition of a preset bit error rate.
- Step 530 Send the CSI feedback corresponding to the channel state information parameter set.
- the optimum includes at least one of the following: a corresponding modulation order, a coding rate and a transmission block size under a preset bit error rate condition.
- FIG. 6 is a flowchart of a method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the embodiment of the above application. Referring to FIG. 6 , the method provided by the embodiment of the present application specifically includes the following: step:
- Step 600 Measure channel state information CSI.
- Step 610 Feed back a set of values for the channel state information parameter set when the RNTI temporary identifier of the wireless network associated with the scrambled DCI is the first type RNTI.
- the terminal can judge the type of the Radio Network Temporary Identifier (RNTI) of the received scrambled-associated DCI.
- RNTI Radio Network Temporary Identifier
- the RNTI of the DCI is the first type of RNTI, it can The state information parameter set feeds back a set of values.
- Step 620 Feed back the value of the preset number of groups for the channel state information parameter set when the wireless network temporary identifier RNTI associated with the scrambled DCI is the second type RNTI.
- the terminal may judge the RNTI type of the received scramble-related DCI, and when the RNTI of the DCI is the second type RNTI, it may feed back the value of the preset number of groups for the channel state information parameter set, where the preset The number of groups can be predefined by the system or configured through the CSI feedback number parameter.
- Step 630 Send CSI feedback corresponding to the channel state information parameter set.
- the first type of RNTI includes at least one of C-RNTI, CS-RNTI, and MCS-C-RNTI
- the second type of RNTI includes non-terminal-specific RNTI
- the first type of RNTI may be a special type of RNTI, which may include one or more of C-RNTI, CS-RNTI, and MCS-C-RNTI
- the second type of RNTI may be a non-terminal-specific RNTI , for example, the RNTI corresponding to a group of terminals or all terminals.
- FIG. 7 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the embodiment of the above application. Referring to FIG. 7 , the method provided by the embodiment of the present application specifically includes follows the steps below:
- Step 700 Measure channel state information CSI.
- Step 710 Feed back a set of values for the channel state information parameter set when the format of the associated DCI is the format of the first type.
- Step 720 When the format of the associated DCI is the format of the second type, feedback the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is a positive integer greater than 1.
- the number is predefined by the system or configured through the CSI feedback number parameter; the number of bits included in the format of the first type is different from that of the format of the second type.
- the terminal can judge the format of the associated DCI, for example, can judge the number of bits included in the associated DCI, and determine whether the format of the associated DCI is the first type format or the second type format according to the number of bits, When the format is the first type, a set of values is fed back for the channel state information parameter set CSI. When the format is the second type, the value of the preset number of groups is fed back for the channel state information parameter set CSI.
- the preset number of groups is determined by The system is pre-defined or configured through the CSI feedback number parameter.
- Step 730 Send CSI feedback corresponding to the channel state information parameter set.
- FIG. 8 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the embodiment of the above application. Referring to FIG. 8 , the method provided by the embodiment of the present application specifically includes follows the steps below:
- Step 800 Measure channel state information CSI.
- Step 810 Feed back a set of values for the channel state information parameter set when the associated DCI is detected on the first time-frequency domain resource.
- Step 820 In the case where the associated DCI is detected on the second time-frequency domain resource, feed back the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is a positive integer greater than 1.
- the number is predefined by the system or configured through the CSI feedback number parameter; the first time-frequency domain resource and the second time-frequency domain resource are set based on different configuration information.
- the terminal may judge the time-frequency domain resources associated with the DCI, for example, may judge the type of configuration information associated with the DCI time-frequency domain resources, for example, the configuration information may include physical resources (Control Resource Set, CORESET), search space, aggregation level, blind detection opportunity and resource element group (Resource Element Group, REG), etc.
- the configuration information of the time-frequency domain resources it is determined that the format of the associated DCI is the first time-frequency domain resource and the second time-frequency domain resource. value, when it is the second time-frequency domain resource, the value of the preset number of groups for the channel state information parameter set CSI feedback, the preset number of groups is predefined by the system or configured by the number of CSI feedback parameters.
- Step 830 Send CSI feedback corresponding to the channel state information parameter set.
- the configuration information includes at least one of the following: physical resource CORESET, search space, aggregation level, blind detection opportunity and resource element group REG.
- FIG. 9 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the embodiment of the above application. Referring to FIG. 9 , the method provided by the embodiment of the present application specifically includes follows the steps below:
- Step 900 Measure channel state information CSI.
- Step 910 Feed back a set of values for the channel state information parameter set when the scheduling data type identifier indicates that the scheduling data is unicast data transmission.
- Step 920 In the case where the scheduling data type identifier indicates that the scheduling data is non-unicast data transmission, feedback the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is a positive integer greater than 1.
- the number of groups is pre-defined by the system or configured through the CSI feedback number parameter.
- the terminal may judge the indication scheduling data type identifier associated with the DCI. If the scheduling data type identifier is unicast data transmission, the DCI feeds back a set of values corresponding to the channel state information parameter set.
- the data type is identified as non-unicast data transmission such as multicast or broadcast, and the DCI feedbacks the value of the preset number of groups corresponding to the channel state information parameter set.
- the preset number of groups is predefined by the system or configured through the CSI feedback number parameter.
- Step 930 Send CSI feedback corresponding to the channel state information parameter set.
- the scheduling data type identifier includes at least one of the following: carrier indication, bandwidth part (Bandwidth Part, BWP) indication, time domain resource allocation indication, frequency domain resource allocation indication, demodulation reference Signal DMRS sequence related information indication, data transmission channel scrambling code information indication, data type indication, antenna port indication and priority indication.
- the indication, the antenna port indication, and the priority indication indicate whether the DCI's scheduled data type is unicast data transmission or non-unicast data transmission.
- FIG. 10 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is an embodiment based on the embodiment of the above application. Referring to FIG. 10 , the method provided by the embodiment of the present application specifically includes follows the steps below:
- Step 1010 Measure channel state information CSI.
- Step 1020 In the case of receiving at least two CSI feedback configurations with the same content and different indices, feedback the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1,
- the preset number of groups is predefined by the system or configured by a parameter of the number of CSI feedback.
- the terminal when the terminal receives at least two CSI feedback configurations with the same content, and the indices of the two CSI feedback configurations are different, it can determine the channel state information parameter set to feed back multiple groups of values, and the feedback value is The number of groups of values can be predefined by the system or configured through the CSI feedback number parameter.
- Step 1030 Send CSI feedback corresponding to the channel state information parameter set.
- the values of the preset number of groups correspond to CSI feedback configurations with the same content but different indexes in descending order of indexes from good to bad.
- the values of the fed back channel state information when feeding back CSI, may be selected in descending order, and the selected channel state information may correspond to the content in descending order or in descending order.
- FIG. 11 is a flowchart of another method for feeding back channel state information provided by an embodiment of the present application.
- the embodiment of the present application is a specific embodiment based on the embodiment of the above application. Referring to FIG. 11 , the method provided by the embodiment of the present application specifically includes follows the steps below:
- Step 1110 Measure channel state information CSI.
- Step 1120 In the case of receiving at least two CSI feedback configurations with the same preset content, feedback the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is a positive integer greater than 1.
- the number of groups is pre-defined by the system or configured through the CSI feedback number parameter.
- the channel state information parameter set when at least two CSI feedback configurations received by the terminal, and the two CSI feedback configuration values include at least two identical contents, it may be determined that the channel state information parameter set is fed back in multiple groups of values,
- the number of groups of feedback values may be predefined by the system or configured through a parameter of the number of CSI feedbacks.
- the preset content in the received at least two CSI feedback configurations with the same preset content includes at least one of the following: CSI feedback format, reference to channel state information associated with CSI feedback Signal (Channel State Information-Reference Signal, CSI-RS) resource, measurement carrier for CSI feedback, measurement BWP for CSI feedback, and use of CSI feedback.
- CSI feedback format reference to channel state information associated with CSI feedback Signal (Channel State Information-Reference Signal, CSI-RS) resource, measurement carrier for CSI feedback, measurement BWP for CSI feedback, and use of CSI feedback.
- CSI-RS Channel State Information-Reference Signal
- the preset content may be the content included in the CSI feedback, and may be one of the CSI feedback format, the CSI-RS resources associated with the CSI feedback, the measurement carrier for the CSI feedback, the measurement BWP for the CSI feedback, and the purpose of the CSI feedback. or more.
- Step 1130 Send CSI feedback corresponding to the channel state information parameter set.
- FIG. 12 is a flowchart of another channel state information feedback method provided by an embodiment of the present application.
- the embodiment of the present application is a specific embodiment based on the embodiment of the above application. Referring to FIG. 12 , the method provided by the embodiment of the present application specifically includes follow the steps below:
- Step 1200 Determine the beam information of the channel state information measurement resource according to the beam judgment information.
- Step 1210 Determine the CSI feedback corresponding to the channel state information parameter set according to the setting conditions.
- the beam judgment information may be information used for judging the beam information used by the terminal to measure the channel state information, and may include beam information of the downlink data transmission channel; beam information of the DCI scheduling the downlink data transmission channel; Opportunities for blind detection of DCI, etc.
- the terminal can determine the beam information according to one or more of beam information of the downlink data transmission channel; beam information of the DCI scheduling the downlink data transmission channel; receiving a blind detection opportunity of the DCI scheduling the downlink data transmission channel.
- the beam determination information includes at least one of the following:
- the beam information of the downlink data transmission channel ; the beam information of the DCI scheduling the downlink data transmission channel; the blind detection opportunity of receiving the DCI scheduling the downlink data transmission channel.
- Step 1220 Send CSI feedback corresponding to the channel state information parameter set.
- the beam information of the downlink data transmission channel is determined by at least one of the following: indicating in the DCI scheduling the downlink data transmission channel; indicating in the MAC layer control unit CE; Predefined by the system; indicated by RRC signaling.
- the downlink data transmission channel is associated with the channel state information measurement resource, and the association includes at least one of the following: the downlink data transmission channel and the channel state The information measurement resource is sent on the same carrier; the downlink data transmission channel and the channel state information measurement resource are sent on the same BWP; the downlink data transmission channel and the channel state information measurement resource are sent on the same frequency domain resource ;
- the downlink data transmission channel is of the same type as the channel state information measurement resource and the type is a non-unicast type, and the type is indicated by the RRC configuration signaling or the DCI that schedules the downlink data transmission channel;
- the DCI of the downlink data transmission channel and the channel state information measurement resource are sent on the same carrier; the DCI of the downlink data transmission channel and the channel state information measurement resource are scheduled to be sent on the same BWP; the downlink data transmission is scheduled
- the DCI of the channel and the channel state information measurement resource are sent on the same frequency domain resource.
- the channel state information measurement resources include at least one of the following: periodic CSI-RS resources, aperiodic CSI-RS resources, and semi-persistent CSI-RS resources.
- the trigger state is used as an example to associate a CSI-ReportConfig
- the base station indicates to the terminal a parameter of the number of CSI feedbacks through RRC signaling
- the parameter of the number of CSI feedbacks is used to indicate that the relevant CSI Report that the terminal needs to feed back contains a number of parameters.
- the channel state information parameter set contains one or more channel state information, such as CQI, PMI, RI, etc.
- the channel state information contained in the channel state information parameter set may be A subset of all channel state information that needs to be fed back in the CSI Report.
- the terminal needs to feed back four channel state information CRI, RI, PMI and CQI in the relevant CSI Report, and the channel state parameter set includes PMI and CQI, then for other channel state information not included in the channel state information parameter set, such as For the CRI and RI here, the terminal only needs to feed back one value in the relevant CSI Report; for the channel state information contained in the channel state information parameter set, such as the PMI and CQI here, the terminal needs to feed back the number parameter according to the CSI configuration to determine several groups of values for feedback.
- Which channel state information is included in the channel state information parameter set may be predefined by the system or semi-statically configured by the base station.
- the channel state information parameter set may be pre-defined by the system or semi-statically configured by the base station. Further, if the channel state information parameter set contains multiple channel state information, and the determination of the multiple channel state information is dependent on each other, for example, the determination of the value of the channel state information parameter 1 needs to depend on the channel state information parameter 2. value, then the terminal must feed back several different values for the channel state information parameter 2, and obtain the value of the channel state information parameter 1 under each channel state information parameter 2 value, so that the terminal obtains multiple sets of ⁇ channel state information Parameter 1, the value of channel state information parameter 2 ⁇ , and feed it back to the base station.
- the channel state information parameter set may include PMI and CQI, and one PMI value corresponds to one CQI value, indicating that the CQI value is calculated based on the PMI value.
- the specific method for the base station to indicate the number of CSI feedback parameters to the terminal is implemented by the following methods:
- the terminal feeds back N groups of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report.
- the specific N can be equal to a system predefined value, such as equal to 2 or 3 or 4.
- the N values for one channel state information may be optimal N values.
- the optimal channel state information value refers to one or more of the optimal modulation order and coding rate transmission block size that can be achieved under the condition of a certain bit error rate.
- the relevant CSI Report refers to the target CSI Report for which the RRC signaling corresponding to the CSI feedback number parameter configured by the base station takes effect, and may be one or more CSI Reports.
- the UE needs to traverse all the PMI value ranges to obtain the corresponding PMI values.
- the value of the optimal CQI value that is, ⁇ PMI value n, optimal CQI value ⁇ . If the PMI value range includes 4 candidate PMI values, the UE will obtain 4 sets of ⁇ PMI value n, optimal CQI value ⁇ , where n is 1 to 4.
- the terminal must feed back the best first 3 sets for PMI and CQI feedback ⁇ PMI value n, best CQI value ⁇ .
- the optimal 3 groups ⁇ PMI value n, optimal CQI value ⁇ fed back by the terminal, wherein the 'PMI value n' of each group is different, or the 'PMI value n' of each group belongs to different PMI candidate set.
- PMIs in different PMI candidate sets are orthogonal to each other. In this way, the base station can obtain more precoding information, which is convenient for the base station to coordinate the precoding weights when scheduling a group of users.
- the terminal only feeds back one set of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report, that is, the terminal feeds back one set of values for the relevant CSI Report.
- the set of values may be the optimal set of values. In the above specific example, the terminal feeds back an optimal set of ⁇ PMI value n, optimal CQI value ⁇ .
- the base station configures the RRC signaling corresponding to the parameter of the number of CSI feedbacks to the terminal.
- the value of this parameter indicates that the terminal needs to feed back several sets of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report. If the parameter indication is 1, the terminal feeds back 1 set of values for all channel state information contained in the channel state information parameter set in the relevant CSI Report. If the parameter indication is N, the terminal feeds back N groups of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report, where N is greater than 1, for example, N is 2 or 3 or 4. The method for determining the value of the N group is the same as that of method 1.
- the terminal only feeds back one set of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report, that is, the terminal feeds back one set of values for the relevant CSI Report. For all the channel state information that needs to be fed back, only one value is fed back. Further, one value can be the optimal channel state information value, and the optimal channel state information value refers to the optimal modulation order, coding rate and One or more of the transport block sizes.
- the base station configures the RRC signaling corresponding to the CSI feedback number parameter to the terminal, and the parameter is indicated as N, then the terminal needs to feed back N groups of values for all the channel state information contained in the channel state information parameter set in the relevant CSI Report.
- the method for determining the value of the N group is the same as that of method 1.
- RRC signaling corresponding to the parameter of the number of feedback CSI may be introduced into the RRC information element CSI-ReportConfig.
- the base station configures the terminal with multiple CSI-ReportConfigs with exactly the same configuration requirements but different CSI-ReportConfig ids by configuring multiple feedback contents and or feedback amounts. to indicate that the terminal needs to feed back multiple sets of values for all the channel state information contained in a channel state information parameter set.
- channel state information parameter set which can be pre-defined by the system or semi-statically configured by the base station or configured by reportQuantity in CSI-ReportConfig or other RRC signaling, for example, when reportQuantity in CSI-ReportConfig includes PMI, CQI,
- the channel state information parameter set is PMI and CQI.
- the terminal still feeds back only one or the indicated number of values according to the reportQuantity indication in the CSI-ReportConfig.
- N is an integer greater than 1, and the terminal knows that the base station needs to know that the base station needs to know all the channel states contained in a channel state information parameter set by itself.
- Information feedback multiple values According to the system predefined or semi-static configuration of the base station, the terminal feeds back the values from good to bad for the channel state information contained in the channel state information parameter set according to the CSI-ReportConfig id from small to large or from large to small. For other channel state information that needs to be fed back and does not belong to the channel state information parameter set, the same value is fed back for each CSI-ReportConfig.
- CSI-ReportConfig 1 For example, if the feedback content contained in CSI-ReportConfig 1, CSI-ReportConfig 3, and CSI-ReportConfig 4 configured by the base station for the terminal are exactly the same, then the terminal knows that it needs to use the configuration of these CSI-ReportConfigs for a certain channel state. For the channel state information contained in the information parameter set, multiple values are fed back. For the channel state information that does not belong to the channel state information parameter set, only one or a specified number of values are fed back according to the reportQuantity indication in CSI-ReportConfig.
- the terminal determines 3 groups of ⁇ CQI, PMI ⁇ according to the measurement result. Therefore, the determination of the CQI value depends on the PMI value, so the terminal must ensure that the PMI values in the three groups of values are different. Based on this principle, the UE obtains three groups of ⁇ CRI, RI ⁇ corresponding to the same group of ⁇ CQI, PMI ⁇ values, namely ⁇ CQI 1, PMI 1 ⁇ , ⁇ CQI 2, PMI 2 ⁇ and ⁇ CQI 3, PMI 3 ⁇ .
- ⁇ CQI 1, PMI 1 ⁇ correspond to the optimal modulation mode and coding rate that the terminal considers to be achievable, as the CSI feedback corresponding to CSI-ReportConfig 1; where ⁇ CQI 2, PMI 2 ⁇ correspond to the second best that the terminal considers to be achievable.
- the modulation mode and coding rate are used as the CSI feedback corresponding to CSI-ReportConfig 3; where ⁇ CQI 3, PMI 3 ⁇ correspond to the third-best modulation mode and coding rate that the terminal considers to be achievable, as the CSI feedback corresponding to CSI-ReportConfig 4 . Because the calculation of CQI depends on the value of PMI, PMI 1, PMI 2, and PMI 3 are not equal to each other.
- the UE obtains the value of CQI 1 based on the value of PMI 1, the value of CQI 2 based on the value of PMI 3, and the value of CQI 2 based on the value of PMI 3.
- the value gets the CQI 3 value.
- the values of CQI 1, CQI 2, and CQI 3 may be equal or different.
- the number of groups of channel state information feedback values in the channel state information parameter set is indicated by the DCI as an example, and the base station uses the DCI for triggering CSI feedback or the DCI for scheduling data transmission to explicitly or implicitly indicate Whether the terminal feeds back one set or multiple sets of values for all the channel state information contained in a channel state information parameter set.
- the following methods are included:
- the terminal determines, according to the RNTI of the scrambled DCI, whether to feed back one group or multiple groups of values for all the channel state information included in the channel state information parameter set.
- the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, the channel state information parameter All channel state information contained in the set is fed back with one set of values.
- the terminal If the RNTI of the scrambled DCI is not a UE-specific RNTI, such as a group-common RNTI, that is, an RNTI used by multiple users, the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, the channel state information parameter All the channel state information contained in the set are fed back to N groups of values. How to obtain the values of N groups is the same as in Embodiments 1 and 2.
- the domain can be the carrier indication domain, the BWP indication domain, the time domain resource allocation indication domain, the frequency domain resource allocation indication domain, the demodulation reference signal (Demodulation Reference Signal, DMRS) sequence related information indication domain, and the scrambling code information indication of the data transmission channel. , or data type indication field, antenna port indication, priority indication, etc.
- the terminal considers that in the DCI-triggered CSI feedback or the DCI-related CSI feedback, one set of values for all channel state information feedback included in the channel state information parameter set is considered.
- the terminal considers that in the DCI-triggered CSI feedback or the DCI-related CSI feedback, there are N groups of values for all channel state information feedback included in the channel state information parameter set.
- the N groups of values are pre-defined by the system or configured through the CSI feedback number parameter.
- the terminal feeds back one group or multiple groups of values for all the channel state information contained in a channel state information parameter set.
- the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, for all the channel state information feedback contained in the channel state information parameter set 1 set of values.
- the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, for all the channel state information feedback contained in the channel state information parameter set N groups of values. How to get the values of N groups, the same as
- DCI format type 1 is different from DCI format type 2, which can be pre-defined by the system or semi-statically configured by the base station for terminal deblind detection.
- Payload value 1 is different from payload value 2, which can be predefined by the system or semi-statically configured by the base station.
- Method 5 Indicate by the time-frequency resource for sending DCI
- Time-frequency resource 1 and time-frequency resource 2 are predefined by the system or semi-statically configured by the base station to the terminal, which may be specific CORESET configuration, search space configuration, aggregation level configuration, blind detection opportunity configuration, and REG configuration used for sending DCI, etc. .
- the terminal If the base station sends DCI on time-frequency resource 1 and the terminal blindly detects DCI on time-frequency resource 1, the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, for all the parameters included in the channel state information parameter set Channel state information feedback 1 group of values.
- the terminal If the base station sends DCI on time-frequency resource 1 and the terminal blindly detects DCI on time-frequency resource 1, the terminal considers that in the CSI feedback triggered by the DCI or the CSI feedback associated with the DCI, for all the parameters included in the channel state information parameter set
- the channel state information feeds back N groups of values.
- the value of N can be pre-defined by the system or configured through the CSI feedback number parameter.
- the transmission beam information of which may be associated with the beam information for transmission of the downlink data transmission channel.
- the transmission beam information may be Quasi Co-Location (Quasi Co-Location, QCL) information and other information used to reflect the beam direction.
- the base station can use the beam information for sending the downlink data transmission channel to send periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources, so as to allow the terminal to transmit the downlink data transmission channel based on the beam information.
- Receive periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources, so that the terminal can use RS resources are used for channel state information measurement.
- the channel state information measurement includes the measurement of CQI, PMI and other information.
- the base station configures the terminal with one or more periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources for channel state information measurement on specific frequency domain resources, and multiple periodic CSI-RS resources Can belong to the same periodic CSI-RS resource Set, multiple semi-persistent CSI-RS resources can belong to the same semi-persistent CSI-RS resource Set, and multiple aperiodic CSI-RS resources can belong to the same aperiodic CSI-RS resource Set .
- the base station uses RRC signaling to configure frequency domain resources for sending CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources, so that the terminal can measure channel state information on the frequency domain resources.
- the base station schedules downlink data transmission channels on specific frequency domain resources, and uses DCI for scheduling, and the scheduled DCI can be sent on one or more opportunities in a set of PDCCH blind detection opportunities.
- the DCI will indicate the frequency domain resources used to transmit the downlink data transmission channel. For the determination of periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resource beam information, at least one of the following methods is adopted:
- the base station instructs the terminal which beam information to use to send the downlink data transmission channel in the scheduling DCI or MAC CE, then correspondingly, the base station also uses the same beam information to send periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI. -RS resources, then the terminal receives periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources according to the beam information.
- the terminal ignores the RRC signaling configuration
- the beam information of periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources The terminal determines periodic CSI-RS resources, semi-persistent CSI-RS resources, and semi-persistent CSI-RS resources according to the transmission frequency domain resource configuration of periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources, and the transmission frequency domain resource configuration of downlink data transmission.
- the CSI-RS resource or aperiodic CSI-RS resource and which downlink data transmission uses the same transmit beam information can also be sent using different beam information.
- the system pre-defines or the base station uses RRC signaling to semi-statically configure the correspondence between the beam information of periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources and the PDCCH blind detection opportunity for sending scheduled DCI.
- the base station semi-statically configures periodic CSI-RS resource 1 corresponding to PDCCH blind detection opportunity 1 within a specific window length
- periodic CSI-RS resource 2 corresponds to PDCCH blind detection opportunity 2 within a specific window length
- periodic CSI-RS resource 3 Corresponds to PDCCH blind detection opportunity 3 within a specific window length.
- the periodic CSI-RS resource, semi-persistent CSI-RS resource or aperiodic CSI-RS resource is sent using the beam information indicated in the blindly detected scheduling DCI on the associated PDCCH blind detection opportunity. If the terminal blindly detects the scheduled DCI on the PDCCH blind detection opportunity 2, and the scheduled DCI indicates beam information 2, the periodic CSI-RS resource 2 is sent using the beam information 2, and the terminal uses the corresponding beam information to receive the periodic CSI. -RS resource 2. Therefore, as the beam information indicated in the scheduling DCI is different, the associated periodic CSI-RS resources can be sent using different beam information.
- the beam information can be sent and the downlink data transmission can be scheduled.
- the transmission beam information of the scheduling DCI of the channel is associated.
- the downlink data transmission channel sent by the base station on the specific frequency domain resource is scheduled by DCI, and the scheduled DCI may be sent on one or more opportunities in a set of PDCCH blind detection opportunities.
- the base station may use different beam information to transmit the scheduled DCI.
- the corresponding relationship between the periodic CSI-RS resource, the semi-persistent CSI-RS resource or the aperiodic CSI-RS resource and the PDCCH blind detection opportunity is pre-defined by the system or semi-statically configured by the base station.
- the base station uses RRC signaling to semi-statically configure periodic CSI-RS resource 1 corresponding to PDCCH blind detection opportunity 1 within a window length, periodic CSI-RS resource 2 corresponding to PDCCH blind detection opportunity 2 within a window length, and periodic CSI-RS resource 3 Corresponds to PDCCH blind detection opportunity 3 within a window length.
- the base station sends the periodic CSI-RS resource 1 by sending the DCI beam information on the PDCCH blind detection opportunity 1, and sends the DCI beam information on the PDCCH blind detection opportunity 2 to send
- the periodic CSI-RS resource 3 is sent by sending the beam information of the DCI on the PDCCH blind detection opportunity 3. If the transmission beam information configured by the base station for the periodic CSI-RS resource 1 is not equal to the beam information for transmitting the DCI on the PDCCH blind detection opportunity 1, the terminal ignores the transmission beam information configured by the base station for the periodic CSI-RS resource 1. Instead of sending beam information, periodic CSI-RS resource 1 is received using the beam information for receiving the associated PDCCH blind detection opportunity.
- the base station uses the beam information corresponding to the blind detection opportunity to send the associated one or more periodic CSI-RS resources, semi-persistent CSI -RS resources or aperiodic CSI-RS resources, if the base station uses RRC signaling to configure the beam information of the periodic CSI-RS resources, semi-persistent CSI-RS resources or aperiodic CSI-RS resources to correspond to the PDCCH blind detection opportunities If the beam information is different, the terminal ignores the beam information of the periodic CSI-RS resource configured by the RRC signaling, and receives the periodic CSI-RS resource according to the beam information corresponding to the blind detection opportunity.
- the downlink data transmission channel is associated with channel state information measurement resources such as periodic CSI-RS resources, aperiodic CSI-RS resources, and semi-persistent CSI-RS resources, and the association includes at least one of the following:
- the channel state information measurement resource is sent on the same carrier; the downlink data transmission channel and the channel state information measurement resource are sent on the same BWP; the downlink data transmission channel and the channel state information measurement resource are sent on the same frequency.
- the type of the downlink data transmission channel and the channel state information measurement resource is the same and the type is a non-unicast type, and the type is configured by the RRC or the DCI that schedules the downlink data transmission channel instruction; scheduling the DCI of the downlink data transmission channel and the channel state information measurement resource to be sent on the same carrier; scheduling the DCI of the downlink data transmission channel and the channel state information measurement resource to be sent on the same BWP; The DCI of the downlink data transmission channel and the channel state information measurement resource are sent on the same frequency domain resource.
- FIG. 13 is a schematic structural diagram of a channel state information feedback device provided by an embodiment of the present application, which can execute the channel state information feedback method provided by any embodiment of the present application, and has functional modules and beneficial effects corresponding to the execution method.
- the device can be implemented by software and/or hardware, generally integrated in a remote server, and specifically includes: an information measurement module 131 and a feedback sending module 132,
- the information measurement module 131 is used to measure the channel state information CSI.
- the feedback sending module 132 is configured to send the CSI feedback corresponding to the channel state information parameter set.
- the channel state information is measured by the information measurement module, and the feedback sending module feeds back the acquired channel state information to the base station, thereby realizing the feedback of the channel state information, enriching the feedback content through the channel state information parameter set, and enhancing the channel state information It can improve the accuracy of the scheduling decision of the base station under the broadcast multicast service.
- the device further includes:
- the feedback determination module is configured to determine the CSI feedback corresponding to the channel state information parameter set according to the setting condition.
- the setting conditions in the feedback determination module include at least one of the following: the configuration of the CSI feedback number parameter; the parameter value of the CSI feedback number parameter; receiving associated downlink control information DCI The scrambling situation of the associated DCI; the scheduling data type identifier in the associated DCI; the format of the associated DCI is received; the time-frequency domain resources of the associated DCI are received; at least two CSI feedback configurations with the same content and different indexes are received; It is assumed that the CSI feedback configuration with the same content, wherein the preset content includes at least one of the CSI feedback configuration content.
- the CSI feedback in the feedback sending module 132 includes at least one CSI report report, and the parameter of the number of CSI feedbacks of the CSI feedback is configured through RRC signaling in the radio resource control layer.
- the CSI feedback number parameter of the CSI feedback in the feedback sending module 132 is configured for a specific CSI report, or the CSI feedback number parameter is configured for all CSI reports.
- the channel state information parameter set in the feedback sending module 132 includes one channel state information, and the channel state information is based on a system predefined configuration and/or an RRC signaling configuration.
- the feedback determination module includes: a first value unit, configured to feed back a group of values when the CSI feedback number parameter of the CSI feedback indicates that the channel state information parameter set is fed back , and feed back a set of optimal values for the channel state information parameter set.
- the feedback determination module includes: a second value unit, configured to feed back at least two sets of values when the CSI feedback number parameter of the CSI feedback indicates the channel state information parameter set.
- the optimal value of the preset number of groups is fed back for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is predefined by the system or through CSI Feedback number parameter configuration.
- the optimal value in the first value unit and/or the second value unit includes: the corresponding modulation order, coding rate and transmission block size under the preset bit error rate condition. one or more of them.
- the associated DCI in the CSI feedback in the feedback sending module 132 includes the DCI for triggering the CSI feedback and/or the DCI for scheduling data transmission.
- the feedback determination module is specifically configured to: in the case that the wireless network temporary identifier RNTI that scrambles the associated DCI is the first type RNTI, for the channel state information parameter set Feeding back a set of values; in the case that the RNTI of the wireless network temporary RNTI that scrambles the associated DCI is the second type RNTI, feeds back the value of the preset number of groups for the channel state information parameter set, wherein the preset group The number is a positive integer greater than 1, and the preset number of groups is predefined by the system or configured through the CSI feedback number parameter.
- the first type of RNTI includes at least one of C-RNTI, CS-RNTI, and MCS-C-RNTI
- the second type of RNTI includes non-terminal-specific RNTI
- the feedback determination module is specifically configured to: in the case that the scheduling data type identifier indicates that the scheduling data is unicast data transmission, feedback a set of parameters for the channel state information parameter set. value; when the scheduling data type identifier indicates that the scheduling data is non-unicast data transmission, the value of the preset number of groups is fed back for the channel state information parameter set, where the preset number of groups is greater than 1 A positive integer, the preset number of groups is predefined by the system or configured through the CSI feedback number parameter.
- the scheduling data type identifier includes at least one of the following: carrier indication, bandwidth part BWP indication, time domain resource allocation indication, frequency domain resource allocation indication, and DMRS sequence correlation.
- the feedback determination module is specifically configured to: feed back a set of values for the channel state information parameter set when the format of the associated DCI is the format of the first type;
- the format of the associated DCI is the second type format
- the value of the preset number of groups is fed back for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is a positive integer greater than 1.
- the number of groups is predefined by the system or configured through the CSI feedback number parameter; the number of bits included in the format of the first type and the format of the second type are different.
- the feedback determination module is specifically configured to: in the case where the associated DCI is detected on the first time-frequency domain resource, feedback a set of parameters for the channel state information parameter set. value; when the associated DCI is detected on the second time-frequency domain resource, feedback the value of the preset number of groups for the channel state information parameter set, where the preset number of groups is a positive integer greater than 1,
- the preset number of groups is predefined by the system or configured through a CSI feedback number parameter; the first time-frequency domain resource and the second time-frequency domain resource are set based on different configuration information.
- the configuration information includes at least one of the following: physical resource CORESET, search space, aggregation level, blind detection opportunity and resource element group REG.
- the feedback determination module is specifically configured to: in the case of receiving at least two CSI feedback configurations with the same content and different indices, feedback presets for the channel state information parameter set The value of the number of groups, where the preset number of groups is a positive integer greater than 1, and the preset number of groups is predefined by the system or configured through the CSI feedback number parameter.
- the preset content in the CSI feedback configuration with the same at least two preset content received includes at least one of the following:
- CSI feedback format CSI-RS resources associated with CSI feedback, measurement carrier for CSI feedback, measurement BWP for CSI feedback, and use of CSI feedback.
- the values of the preset number of groups correspond to CSI feedback configurations with the same content but different indexes in descending order of indexes from good to bad.
- the information measurement module 131 includes:
- the beam information unit is used to determine the beam information of the channel state information measurement resource according to the beam judgment information.
- the beam judgment information includes at least one of the following:
- a blind detection opportunity for the DCI scheduling the downlink data transmission channel is received.
- the beam information of the downlink data transmission channel is determined by at least one of the following:
- the downlink data transmission channel is associated with the channel state information measurement resource, and the association includes at least one of the following:
- the downlink data transmission channel and the channel state information measurement resource are sent on the same carrier;
- the downlink data transmission channel and the channel state information measurement resource are sent on the same BWP;
- the downlink data transmission channel and the channel state information measurement resource are sent on the same frequency domain resource;
- the downlink data transmission channel is of the same type as the channel state information measurement resource, and the type is a non-unicast type, and the type is indicated by the RRC configuration signaling or the DCI scheduling the downlink data transmission channel;
- the DCI scheduling the downlink data transmission channel and the channel state information measurement resource are sent on the same frequency domain resource.
- the channel state information measurement resources include at least one of the following: periodic CSI-RS resources, aperiodic CSI-RS resources, and semi-persistent CSI-RS resources.
- FIG. 14 is a schematic structural diagram of a device provided by an embodiment of the present application.
- the device includes a processor 140, a memory 141, an input device 142, and an output device 143; the number of processors 140 in the device may be One or more, one processor 140 is taken as an example in FIG. 14 ; the device processor 140, memory 141, input device 142 and output device 143 can be connected by a bus or other means, and FIG. 14 takes the connection by a bus as an example.
- the memory 141 can be used to store software programs, computer-executable programs, and modules, such as the modules (information measuring module 131 and feedback sending module 132) corresponding to the channel state information feedback device in the embodiments of the present application.
- the processor 140 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the memory 141 , that is, to implement the above-mentioned method.
- the memory 141 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Additionally, memory 141 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 141 may further include memory located remotely from processor 140, which may be connected to the device through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
- the input device 142 may be used to receive input numerical or character information, and to generate key signal input related to user settings and function control of the device.
- the output device 143 may include a display device such as a display screen.
- Embodiments of the present application further provide a computer-readable storage medium, where the computer-executable instructions are used to execute a channel state information feedback method when executed by a computer processor, and the method includes:
- a storage medium containing computer-executable instructions provided by the embodiments of the present application, the computer-executable instructions of which are not limited to the above-mentioned method operations, and can also execute the channel state information feedback method provided by any embodiment of the present application. related operations in .
- client encompasses any suitable type of wireless user equipment, such as a mobile telephone, portable data processing device, portable web browser or vehicle mounted mobile station.
- the various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof.
- some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
- Embodiments of the present application may be implemented by the execution of computer program instructions by a data processor of a mobile device, eg in a processor entity, or by hardware, or by a combination of software and hardware.
- Computer program instructions may be assembly instructions, Industry Standard Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
- ISA Industry Standard Architecture
- the block diagrams of any logic flow in the figures of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
- Computer programs can be stored on memory.
- the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, Read-Only Memory (ROM), Random Access Memory (RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disc (CD)), etc.
- Computer-readable media may include non-transitory storage media.
- the data processor can be of any type suitable for the local technical environment, such as, but not limited to, a general purpose computer, a special purpose computer, a microprocessor, a Digital Signal Process (DSP), an Application Specific Integrated Circuit (ASIC) ), programmable logic devices (Field Programmable Gate Array, FPGA) and processors based on multi-core processor architecture.
- DSP Digital Signal Process
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
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Abstract
Description
Claims (30)
- 一种信道状态信息反馈方法,包括:测量信道状态信息CSI;发送对应信道状态信息参数集合的CSI反馈。
- 根据权利要求1所述的方法,还包括:根据设置条件确定对应所述信道状态信息参数集合的CSI反馈。
- 根据权利要求2所述的方法,其中,所述设置条件至少包括以下一种:CSI反馈数目参数的配置情况;CSI反馈数目参数的参数取值;接收关联下行控制信息DCI的加扰情况;关联DCI中的调度数据类型标识;接收关联DCI的格式;接收关联DCI的时频域资源;接收到至少两个内容相同且索引不同的CSI反馈配置;接收到至少两个预设内容相同的CSI反馈配置,其中,预设内容包括至少一种所述CSI反馈配置内容。
- 根据权利要求2所述的方法,其中,所述CSI反馈包括至少一个CSI报告report,所述CSI反馈的CSI反馈数目参数通过无线资源控制层RRC信令配置。
- 根据权利要求4所述的方法,其中,所述CSI反馈的CSI反馈数目参数针对特定CSI report配置,或者,所述CSI反馈数目参数针对所有CSI report配置。
- 根据权利要求2所述的方法,其中,所述信道状态信息参数集合包括至少一个信道状态信息,所述信道状态信息基于系统预定义和RRC信令中的至少之一配置。
- 根据权利要求2所述的方法,其中,在所述CSI反馈的CSI反馈数目参数指示信道状态信息参数集合反馈一组取值的情况下,针对所述信道状态信息 参数集合反馈一组最优的取值。
- 根据权利要求2所述的方法,其中,在所述CSI反馈的CSI反馈数目参数指示信道状态信息参数集合反馈至少两组取值的情况下,针对所述信道状态信息参数集合反馈预设组数的最优的取值,其中,所述预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置。
- 根据权利要求8所述的方法,其中,在所述信道状态信息参数集合至少包括两个信道状态信息,多个所述信道状态信息的取值之间存在依赖关系的情况下,依赖信道状态信息的取值基于对应的被依赖信道状态信息的至少两个取值确定。
- 根据权利要求7或8所述的方法,其中,所述最优包括以下至少一种:预设误码率条件下对应的调制阶数、编码码率和传输块大小。
- 根据权利要求2所述的方法,其中,所述CSI反馈的关联DCI包括触发CSI反馈的DCI和调度数据传输的DCI中的至少之一。
- 根据权利要求3所述的方法,其中,根据所述接收关联下行控制信息DCI的加扰情况确定对应信道状态信息参数集合的CSI反馈,包括:在加扰所述关联DCI的无线网络临时标识RNTI为第一类型RNTI的情况下,针对所述信道状态信息参数集合反馈一组取值;在加扰所述关联DCI的无线网络临时标识RNTI为第二类型RNTI的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置。
- 根据权利要求12所述的方法,其中,所述第一类型RNTI至少包括小区无线网络临时标识C-RNTI、配置的调度无线网络临时标识CS-RNTI、模块化编码方案小区无线网络临时标识MCS-C-RNTI中一种,所述第二类型RNTI包括非终端特定的RNTI。
- 根据权利要求3所述的方法,其中,根据所述关联DCI中的调度数据类型标识确定对应信道状态信息参数集合的CSI反馈,包括:在所述调度数据类型标识指示调度数据为单播数据传输的情况下,针对所述信道状态信息参数集合反馈一组取值;在所述调度数据类型标识指示调度数据为非单播数据传输的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置。
- 根据权利要求3或14所述的方法,其中,所述调度数据类型标识至少包括以下一种:载波指示、带宽部分BWP指示、时域资源分配指示、频域资源分配指示、解调参考信号DMRS序列相关信息指示、数据传输信道的扰码信息指示、数据类型指示、天线端口指示和优先级指示。
- 根据权利要求3所述的方法,其中,根据接收所述关联DCI的格式确定对应信道状态信息参数集合的CSI反馈,包括:在所述关联DCI的格式为第一类型格式的情况下,针对所述信道状态信息参数集合反馈一组取值;在所述关联DCI的格式为第二类型格式的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置;所述第一类型格式与所述第二类型格式包含的比特数目不同。
- 根据权利要求3所述的方法,其中,根据接收所述关联DCI的时频域资源确定对应信道状态信息参数集合的CSI反馈,包括:在第一时频域资源上检测到所述关联DCI的情况下,针对所述信道状态信息参数集合反馈一组取值;在第二时频域资源上检测到所述关联DCI的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置;所述第一时频域资源和所述第二时频域资源基于不同的配置信息设置。
- 根据权利要求17所述的方法,其中,所述配置信息至少包括以下一种:物理资源CORESET、搜索空间、聚合级别、盲检机会和资源元素组REG。
- 根据权利要求3所述的方法,其中,所述接收到至少两个预设内容相同的CSI反馈配置中的预设内容包括以下至少一种:CSI反馈格式、CSI反馈关联的信道状态信息参考信号CSI-RS资源、CSI反馈的测量载波、CSI反馈的测量BWP和CSI反馈的用途。
- 根据权利要求3所述的方法,其中,在接收到至少两个内容相同且索引不同的CSI反馈配置的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置。
- 根据权利要求3所述的方法,其中,在接收到至少两个预设内容相同的CSI反馈配置的情况下,针对所述信道状态信息参数集合反馈预设组数的取值,其中,预设组数为大于1的正整数,所述预设组数由系统预定义或通过CSI反馈数目参数配置。
- 根据权利要求20或21所述的方法,其中,所述预设组数的取值按照从优到劣的顺序对应索引从小到大顺序或从大到小顺序的内容相同且索引不同的CSI反馈配置。
- 根据权利要求1所述的方法,其中,所述测量信道状态信息CSI,包括:根据波束判断信息确定信道状态信息测量资源的波束信息。
- 根据权利要求23所述的方法,其中,所述波束判断信息包括以下至少一种:下行数据传输信道的波束信息;调度下行数据传输信道的DCI的波束信息;接收到调度下行数据传输信道的DCI的盲检机会。
- 根据权利要求24所述的方法,其中,所述下行数据传输信道的波束信息由以下至少一种确定:在调度所述下行数据传输信道的DCI中指示;在媒体接入控制MAC层控制单元CE中指示;系统预定义;通过RRC信令指示。
- 根据权利要求24所述的方法,其中,所述下行数据传输信道与所述信道状态信息测量资源存在关联,所述关联包括以下至少一种:所述下行数据传输信道与所述信道状态信息测量资源在相同载波上发送;所述下行数据传输信道与所述信道状态信息测量资源在相同BWP上发送;所述下行数据传输信道与所述信道状态信息测量资源在相同频域资源上发送;所述下行数据传输信道与所述信道状态信息测量资源的类型相同且所述类型为非单播类型,所述类型由RRC配置信令或调度所述下行数据传输信道的DCI指示;调度所述下行数据传输信道的DCI与所述信道状态信息测量资源在相同载波上发送;调度所述下行数据传输信道的DCI与所述信道状态信息测量资源在相同BWP上发送;调度所述下行数据传输信道的DCI与所述信道状态信息测量资源在相同频域资源上发送。
- 根据权利要求23所述的方法,其中,所述信道状态信息测量资源包括以下至少一种:周期CSI-RS资源、非周期CSI-RS资源、半持续CSI-RS资源。
- 一种信道状态信息反馈装置,包括:信息测量模块,设置为测量信道状态信息CSI;反馈发送模块,设置为发送对应所述按照信道状态信息参数集合的所述CSI反馈。
- 一种设备,包括:至少一个处理器;存储器,设置为存储至少一个程序;当所述至少一个程序被所述至少一个处理器执行,使得所述至少一个处理器实现如权利要求1-27中任一所述的信道状态信息反馈方法。
- 一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1-27中任一所述的信道状态信息反馈方法。
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