CN115150880A - CSI reporting method and device, storage medium, terminal and network equipment - Google Patents
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Abstract
A CSI reporting method and device, a storage medium, a terminal and a network device are provided, wherein the method comprises the following steps: determining the priority of CSI reports when receiving the configuration of calculating and reporting the CSI reports of a plurality of cells, wherein the plurality of cells at least comprise one non-service cell; calculating CSI reports of the plurality of cells according to the priority of the CSI reports; and reporting the CSI reports of the plurality of cells according to the priority of the CSI reports. By the method, when the CSI report of the non-service cell and the CSI report aiming at the service cell need to occupy CSI calculation resources at the same time, or time-frequency resources required by reporting are overlapped in a time domain, the understanding of the terminal and the base station in the aspects of the calculation and the reporting of the CSI report is kept consistent, and the stability of wireless communication is ensured.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a CSI reporting method and apparatus, a storage medium, a terminal, and a network device.
Background
In the 3rd Generation Partnership Project (3 GPP) protocol, only measurement and reporting of Channel State Information (CSI) for a serving cell are currently supported, and different CSI reports have different priorities. When a plurality of CSI reports need to simultaneously occupy CSI calculation resources of User Equipment (User Equipment, UE for short), and when the CSI calculation resources cannot meet the calculation requirements of the plurality of CSI reports, the CSI report with high priority is calculated preferentially, and whether the CSI report with low priority is calculated depends on the size of the residual CSI calculation resources.
In a New Radio (NR) protocol standardization stage of a release 17 (Rel-17) of a 3GPP protocol (one protocol version of the NR protocol corresponding to Rel-17), in order to support rapid cell switching of a terminal and uplink and downlink data communication between the terminal and a non-serving cell, measurement and reporting of CSI for the non-serving cell need to be supported.
However, the prior art does not define the priority of the CSI report for the non-serving cell, and when the CSI report for the non-serving cell and the CSI report for the serving cell need to occupy CSI computation resources simultaneously or time-frequency resources required for reporting overlap in a time domain, it is impossible to determine which CSI reports are not computed or reported, which may affect the stability of wireless communication.
Disclosure of Invention
The technical problem solved by the invention is how to ensure that the understanding of the terminal and the base station in the aspects of the calculation and the reporting of the CSI report is kept consistent when the CSI report of the non-service cell and the CSI report aiming at the service cell need to occupy the CSI calculation resource at the same time or the time-frequency resource required by the reporting is overlapped in the time domain, thereby ensuring the stability of wireless communication.
In order to solve the above problem, an embodiment of the present invention provides a CSI reporting method, where the method includes: determining a priority of a CSI report when a configuration of calculating and reporting the CSI report of a plurality of cells is received, wherein the plurality of cells at least comprise one non-serving cell; calculating CSI reports of the plurality of cells according to the priority of the CSI reports; and reporting the CSI reports of the plurality of cells according to the priority of the CSI reports.
Optionally, the calculating CSI reports for the multiple cells according to the priorities of the CSI reports includes: and when the CSI reports of the plurality of cells need to occupy CSI computing resources simultaneously, preferentially computing the CSI report with high priority according to the size of the CSI computing resources.
Optionally, the reporting the CSI reports of the multiple cells according to the priority of the CSI report includes: and on a single carrier, when time-frequency resources occupied by the CSI reports of the plurality of cells overlap in a time domain, the CSI reports with high priority are reported preferentially.
Optionally, the determining the priority of the CSI report includes: determining the priority of the CSI report according to at least one of rule I, rule II, rule III, rule IV and rule V; wherein the rule one comprises: priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of aperiodic > priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of semi-persistent > priority of CSI report with a bearer channel type of PUCCH and a time domain periodicity of periodic; the second rule comprises: priority of CSI report whose content includes RSRP and/or SINR > priority of CSI report whose content includes at least one of CQI, RI, PMI; the third rule includes: the priority of the CSI report of the non-serving cell is higher/lower than that of the CSI report of the serving cell; the rule four includes: determining the priority of the CSI report of the serving cell according to the index of the serving cell, and determining the priority of the CSI report of the non-serving cell according to the index of the physical layer cell of the non-serving cell; the rule five includes: and determining the priority of the CSI report according to the index value of the CSI report.
Optionally, the smaller the index of the serving cell is, the higher the priority of the CSI report of the serving cell is.
Optionally, the smaller the physical layer cell index of the non-serving cell is, the higher the priority of the CSI report of the non-serving cell is.
Optionally, the smaller the index value of the CSI report is, the higher the priority of the CSI report is.
Optionally, the determining the priority of the CSI report according to at least one of rule one, rule two, rule three, rule four, and rule five includes: and selecting rules in sequence according to the priority order of the rules to determine the priority of the CSI report.
Optionally, the priority order of the rules includes, from high to low: rule one, rule two, rule three, rule four, rule five, or rule one, rule three, rule two, rule four, rule five, or rule three, rule one, rule two, rule four, rule five.
The embodiment of the invention also provides a CSI reporting method, which comprises the following steps: sending a configuration to a terminal, the configuration enabling the terminal to calculate and report CSI reports of a plurality of cells, wherein the plurality of cells at least comprise one non-serving cell; determining a priority of the CSI report; and receiving the CSI report reported by the terminal according to the priority of the CSI report.
Optionally, the CSI report reported by the terminal includes: and when the CSI reports of the plurality of cells need to occupy CSI computing resources simultaneously, the terminal calculates the high-priority CSI report preferentially according to the size of the CSI computing resources.
Optionally, the CSI report reported by the terminal includes: and on a single carrier, when time-frequency resources occupied by the CSI reports of the plurality of cells overlap in a time domain, the terminal reports the CSI reports with high priority preferentially.
Optionally, the determining the priority of the CSI report includes: determining the priority of the CSI report according to at least one of rule I, rule II, rule III, rule IV and rule V; wherein the rule one comprises: priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of aperiodic > priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of semi-persistent > priority of CSI report with a bearer channel type of PUCCH and a time domain periodicity of periodic; the second rule comprises: priority of CSI report whose content includes RSRP and/or SINR > priority of CSI report whose content includes at least one of CQI, RI, PMI; the third rule includes: the priority of the CSI report of the non-serving cell is higher/lower than that of the CSI report of the serving cell; the rule four includes: determining the priority of the CSI report of the serving cell according to the index of the serving cell, and determining the priority of the CSI report of the non-serving cell according to the index of the physical layer cell of the non-serving cell; the rule five includes: and determining the priority of the CSI report according to the index value of the CSI report.
Optionally, the smaller the index of the serving cell is, the higher the priority of the CSI report of the serving cell is.
Optionally, the smaller the physical layer cell index of the non-serving cell is, the higher the priority of the CSI report of the non-serving cell is.
Optionally, the smaller the index value of the CSI report is, the higher the priority of the CSI report is.
Optionally, the determining the priority of the CSI report according to at least one of rule one, rule two, rule three, rule four, and rule five includes: and selecting rules in sequence according to the priority order of the rules to determine the priority of the CSI report.
Optionally, the priority order of the rules includes, from high to low: rule one, rule two, rule three, rule four, rule five, or rule one, rule three, rule two, rule four, rule five, or rule three, rule one, rule two, rule four, rule five.
An embodiment of the present invention further provides a CSI reporting apparatus, where the apparatus includes: a first priority determining module, configured to determine a priority of a CSI report when receiving a configuration to calculate and report the CSI report for a plurality of cells, where the plurality of cells includes at least one non-serving cell; a calculating module, configured to calculate CSI reports for the multiple cells according to the priorities of the CSI reports; and the reporting module is used for reporting the CSI reports of the plurality of cells according to the priority of the CSI reports.
An embodiment of the present invention further provides a CSI reporting apparatus, where the apparatus includes: a configuration module, configured to send, to a terminal, a configuration for enabling the terminal to calculate and report CSI reports of a plurality of cells, where the plurality of cells includes at least one non-serving cell; a second priority determination module that determines a priority of the CSI report; and the receiving module is used for receiving the CSI report reported by the terminal according to the priority of the CSI report.
The embodiment of the invention also provides a storage medium, wherein a computer program is stored on the storage medium, and the computer program executes the steps of the CSI reporting method when being executed by a processor.
An embodiment of the present invention further provides a terminal, which includes the apparatus, or includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor executes the steps of the CSI reporting method when executing the computer program.
The embodiment of the present invention further provides a network device, which includes the apparatus, or includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes the step of the CSI reporting method when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a CSI reporting method, which comprises the following steps: determining a priority of a CSI report when a configuration of calculating and reporting the CSI report of a plurality of cells is received, wherein the plurality of cells at least comprise one non-serving cell; calculating CSI reports of the plurality of cells according to the priority of the CSI reports; and reporting the CSI reports of the plurality of cells according to the priority of the CSI reports. Compared with the prior art, the CSI reporting method can ensure that the terminal and the base station keep consistent understanding in the aspects of CSI report calculation and reporting when the CSI report of the non-service cell and the CSI report aiming at the service cell need to occupy CSI calculation resources simultaneously or time-frequency resources required by reporting are overlapped in the time domain, thereby ensuring the stability of wireless communication.
Further, the terminal and the base station may define a priority determination method for CSI reports by the embodiments of the present invention, and determine priorities of CSI reports of multiple cells when CSI reports of the multiple cells need to be reported simultaneously.
Drawings
Fig. 1 is a diagram illustrating CSI reporting priorities in the prior art;
fig. 2 is a flowchart illustrating a CSI reporting method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of another CSI reporting method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a CSI reporting apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another CSI reporting apparatus according to an embodiment of the present invention.
Detailed Description
In the prior art, the priority of CSI reports for a non-serving cell is not defined in the prior art, and when a CSI report for a non-serving cell and a CSI report for a serving cell need to occupy CSI calculation resources simultaneously or time-frequency resources required for reporting overlap in a time domain, it is impossible to determine which CSI reports are not calculated or reported, which may affect the stability of wireless communication.
Specifically, in the NR protocol standardization phase of Rel-17, there may be both CSI reports for the serving cell and CSI reports for the non-serving cells on one carrier. When a CSI report for a non-serving cell and a CSI report for a serving cell need to occupy CSI calculation resources simultaneously or time-frequency resources required by reporting overlap in a time domain, a new CSI report priority needs to be defined, and which CSI reports are not calculated or reported are determined according to the new CSI report priority.
In addition, on one carrier (carrier) in the existing protocol, when time-frequency resources required by a plurality of CSI reports are overlapped in the time domain, a high-priority CSI report is preferentially transmitted, and the priority of the CSI report is determined according to the time-domain periodicity of the CSI reports and the type of a bearer channel. If the multiple CSI reports have different time domain periodicities and types of bearing channels, the CSI report with low priority is not reported; otherwise, multiplexing the CSI report with low priority and the CSI report with high priority to the same time-frequency resource for reporting.
The priority of CSI reporting of the serving cell may be expressed by the following formula: pri iCSI (y,k,c,s)＝2·N cells ·M s ·y+N cells ·M s ·k+M s C + s; wherein, pri iCSI (y, k, c, s) is the Priority (Pri) value of the ith CSI report; n is a radical of hydrogen cells Represents a maximum number of serving cells supporting the configuration; m s Represents a maximum number of CSI reports supporting the configuration; y =0,1,2,3. When y =0, the type of the bearer Channel indicating the CSI report and the time domain periodicity of the report are respectively a Physical Uplink Shared Channel (PUSCH) bearer and an aperiodic; when y =1, the type and time domain periodicity of the bearer channel representing the CSI report are PUSCH channel bearer and Semi-persistent (SP for short), respectively; when y =2, the type and the time domain periodicity of the bearer Channel indicating the CSI report are Physical Uplink Control Channel (PUCCH) bearer and semi-persistent, respectively; when y =3, the type and time domain periodicity of the bearer channel representing the CSI report are PUCCH channel bearer and periodicity, respectively. k =0,1. Wherein k =0 indicates that the CSI report includes Reference Signal Receiving Power (RSRP) and/or Signal to Interference plus Noise Ratio (SINR); k =1 indicates that the content of the CSI report includes a Channel Quality Indication (CQI), a Rank Indication (RI), and a Precoding Matrix Indicator (PMI). c represents a serving cell Identity (ID) where a reference signal corresponding to the CSI report is located; s denotes an Identification (ID) or an index value (index) of the CSI report. The smaller the value of the priority of the CSI report, the higher the corresponding priority.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating CSI reporting priorities of a serving cell in the prior art; when the CSI report is carried by the PUSCH and is not periodic (that is, corresponds to Y = 0), the value of k may be determined according to the content (RSRP or SINR or CQI, RI, or PMI) of the CSI report, the value of c may be determined by obtaining the serving cell identifier (which may be 0,1, … n, where n is a positive integer), and the value of s may be determined by obtaining the CSI report ID (which may be 0,1, … m, where m is a positive integer). When y =1,2,3, the values of the respective parameters in the formula can also be determined in the aforementioned manner. The priority corresponding to each parameter is changed from high to low along the X-axis direction.
Referring to fig. 2, an embodiment of the present invention provides a CSI reporting method, where the method shown in fig. 2 may be executed by a terminal, such as a UE, and the method includes steps S201 to S203, which are described in detail as follows.
Step S201, when receiving the configuration of calculating and reporting CSI reports of a plurality of cells, determining the priority of the CSI reports, wherein the plurality of cells at least comprise one non-service cell.
In this embodiment, a network device (including a base station (such as a gNB, an eNB, etc.) or an Access Point (AP for short), etc.) can configure a UE, so that the UE calculates and reports a plurality of CSI reports including a non-serving cell. Optionally, the network device sends the configuration to the UE through Radio Resource Control (RRC) signaling.
Optionally, the plurality of cells may include a plurality of non-serving cells, and the plurality of cells may further include one or more serving cells and one or more non-serving cells. For the connected user, a cell with which a communication connection is established or a cell in which data communication is performed is referred to as a serving cell, and a cell with which a communication connection is not established or a cell in which data communication is not performed is referred to as a non-serving cell.
Step S202, the CSI reports of the plurality of cells are calculated according to the priority of the CSI reports.
And step S203, reporting the CSI reports of the plurality of cells according to the priority of the CSI reports.
And the UE calculates and reports the CSI reports of the plurality of cells to the network equipment according to the configuration of the network equipment. When the UE calculates and reports the CSI reports of the multiple cells, the order or importance of calculation and reporting may be determined according to the priority of the CSI reports.
Optionally, the calculating CSI reports of the multiple cells according to the priorities of the CSI reports in step S202 includes: and when the CSI reports of the plurality of cells need to occupy CSI calculation resources at the same time, preferentially calculating the CSI report with high priority according to the size of the CSI calculation resources.
Claims (23)
1. A CSI reporting method, the method comprising:
determining the priority of CSI reports when receiving the configuration of calculating and reporting the CSI reports of a plurality of cells, wherein the plurality of cells at least comprise one non-service cell;
calculating CSI reports of the plurality of cells according to the priorities of the CSI reports;
and reporting the CSI reports of the plurality of cells according to the priority of the CSI reports.
2. The method of claim 1, wherein the calculating the CSI reports for the plurality of cells according to the priorities of the CSI reports comprises:
and when the CSI reports of the plurality of cells need to occupy CSI calculation resources at the same time, preferentially calculating the CSI report with high priority according to the size of the CSI calculation resources.
3. The method of claim 1, wherein reporting the CSI reports for the plurality of cells according to the priority of the CSI reports comprises:
and on a single carrier, when time-frequency resources occupied by the CSI reports of the plurality of cells overlap in a time domain, the CSI reports with high priority are reported preferentially.
4. The method of claim 1, wherein the determining the priority of the CSI report comprises:
determining the priority of the CSI report according to at least one of a rule I, a rule II, a rule III, a rule IV and a rule V;
wherein the rule one comprises: priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of aperiodic > priority of CSI report with a bearer channel type of PUSCH and a time domain periodicity of semi-persistent > priority of CSI report with a bearer channel type of PUCCH and a time domain periodicity of periodic;
the second rule comprises: priority of CSI report whose content includes RSRP and/or SINR > priority of CSI report whose content includes at least one of CQI, RI, PMI;
the third rule includes: the priority of the CSI report of the non-serving cell is higher/lower than that of the CSI report of the serving cell;
the rule four includes: determining the priority of the CSI report of the serving cell according to the index of the serving cell, and determining the priority of the CSI report of the non-serving cell according to the index of the physical layer cell of the non-serving cell;
the rule five includes: and determining the priority of the CSI report according to the index value of the CSI report.
5. The method of claim 4, wherein the smaller the index of the serving cell, the higher the priority of the CSI report of the serving cell.
6. The method of claim 4, wherein the smaller the physical layer cell index of the non-serving cell, the higher the priority of the CSI report of the non-serving cell.
7. The method of claim 4, wherein the smaller the index value of the CSI report, the higher the priority of the CSI report.
8. The method of any of claims 4 to 7, wherein the determining the priority of the CSI report according to at least one of rule one, rule two, rule three, rule four and rule five comprises:
and selecting rules in sequence according to the priority order of the rules to determine the priority of the CSI report.
9. The method of claim 8, wherein the priority order of the rules from high to low comprises:
rule one, rule two, rule three, rule four, rule five, or rule one, rule three, rule two, rule four, rule five, or rule three, rule one, rule two, rule four, rule five.
10. A CSI reporting method, characterized in that the method comprises:
sending a configuration to a terminal, the configuration enabling the terminal to calculate and report CSI reports of a plurality of cells, wherein the plurality of cells at least comprise one non-serving cell;
determining a priority of the CSI report;
and receiving the CSI report reported by the terminal according to the priority of the CSI report.
11. The method of claim 10, wherein the CSI report reported by the terminal comprises:
and when the CSI reports of the plurality of cells need to occupy CSI computing resources simultaneously, the terminal calculates the high-priority CSI report preferentially according to the size of the CSI computing resources.
12. The method of claim 10, wherein the CSI report reported by the terminal comprises:
and on a single carrier, when time-frequency resources occupied by the CSI reports of the plurality of cells overlap in a time domain, the terminal reports the CSI reports with high priority preferentially.
13. The method of claim 10, wherein the determining the priority of the CSI report comprises:
determining the priority of the CSI report according to at least one of rule I, rule II, rule III, rule IV and rule V;
wherein the rule one comprises: priority of CSI report with a bearer channel type of PUSCH and aperiodic time domain periodicity > priority of CSI report with a bearer channel type of PUSCH and semi-persistent time domain periodicity > priority of CSI report with a bearer channel type of PUCCH and periodic time domain periodicity;
the second rule comprises: priority of CSI report whose content includes RSRP and/or SINR > priority of CSI report whose content includes at least one of CQI, RI, PMI;
the third rule includes: the priority of the CSI report of the non-serving cell is higher/lower than that of the CSI report of the serving cell;
the rule four includes: determining the priority of the CSI report of the serving cell according to the index of the serving cell, and determining the priority of the CSI report of the non-serving cell according to the index of the physical layer cell of the non-serving cell;
the rule five includes: and determining the priority of the CSI report according to the index value of the CSI report.
14. The method of claim 13, wherein the smaller the index of the serving cell, the higher the priority of CSI reporting for the serving cell.
15. The method of claim 13, wherein the smaller the physical layer cell index of the non-serving cell, the higher the priority of the CSI report of the non-serving cell.
16. The method of claim 13, wherein the smaller the index value of the CSI report, the higher the priority of the CSI report.
17. The method of any of claims 13 to 16, wherein the prioritizing the CSI reports according to at least one of rule one, rule two, rule three, rule four and rule five comprises:
and selecting rules in sequence according to the priority order of the rules to determine the priority of the CSI report.
18. The method of claim 17, wherein the priority order of the rules from high to low comprises:
rule one, rule two, rule three, rule four, rule five, or rule one, rule three, rule two, rule four, rule five, or rule three, rule one, rule two, rule four, rule five.
19. An apparatus for reporting CSI, the apparatus comprising:
a first priority determining module, configured to determine a priority of a CSI report when receiving a configuration to calculate and report the CSI report for a plurality of cells, where the plurality of cells includes at least one non-serving cell;
a calculating module, configured to calculate CSI reports for the multiple cells according to the priorities of the CSI reports; and the reporting module is used for reporting the CSI reports of the plurality of cells according to the priority of the CSI reports.
20. An apparatus for reporting CSI, the apparatus comprising:
a configuration module, configured to send, to a terminal, a configuration for enabling the terminal to calculate and report CSI reports of a plurality of cells, where the plurality of cells includes at least one non-serving cell;
a second priority determination module that determines a priority of the CSI report;
and the receiving module is used for receiving the CSI report reported by the terminal according to the priority of the CSI report.
21. A storage medium having a computer program stored thereon, the computer program, when being executed by a processor, being adapted to perform the method of any of the claims 1 to 9 or the steps of the method of any of the claims 10 to 18.
22. A terminal comprising an apparatus as claimed in claim 19, or comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 9.
23. A network device comprising the apparatus of claim 20, or comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 10 to 18.
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| WO2024199371A1 (en) * | 2023-03-31 | 2024-10-03 | 中国移动通信有限公司研究院 | Csi processing unit calculation method and apparatus, terminal, and network device |
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| ZTE: "R1-093196 "DL Reference Signal Design for CSI generation in LTE-Advanced"", 3GPP TSG_RAN\\WG1_RL1, no. 1, 19 August 2009 (2009-08-19) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024196539A1 (en) * | 2023-03-17 | 2024-09-26 | Qualcomm Incorporated | Techniques to determine a priority of a channel state information report |
| WO2024199371A1 (en) * | 2023-03-31 | 2024-10-03 | 中国移动通信有限公司研究院 | Csi processing unit calculation method and apparatus, terminal, and network device |
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