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CN-115379489-B - Doppler frequency offset reporting method and device, terminal and network side equipment

CN115379489BCN 115379489 BCN115379489 BCN 115379489BCN-115379489-B

Abstract

The application discloses a Doppler frequency offset reporting method, a device, a terminal and network side equipment, belonging to the technical field of communication; and the terminal sends Doppler frequency offset reporting information to the network side equipment according to the measurement result, wherein the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by the measurement of the terminal.

Inventors

  • ZHENG KAILI
  • SUN PENG
  • TAMARAKA RAGESH

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260512
Application Date
20210518

Claims (20)

  1. 1. The Doppler frequency offset reporting method is characterized by comprising the following steps: The method comprises the steps that a terminal receives first configuration information sent by network side equipment, and the terminal performs Doppler frequency offset measurement corresponding to at least one sending and receiving point TRP according to the first configuration information; the terminal sends Doppler frequency offset reporting information to the network side equipment according to the Doppler frequency offset measurement result; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by the terminal measurement; The first configuration information is used for indicating target measurement resources associated with Doppler frequency offset reporting, wherein the target measurement resources are used for Doppler frequency offset measurement, and the first configuration information comprises: A quasi co-located QCL reference source corresponding to a second measurement resource set in CSI resource allocation, wherein the QCL reference source is the target measurement resource; The second measurement resource set can be divided into a plurality of measurement resource subsets, each resource in each measurement resource subset is associated with a target resource set as a QCL reference source, and the second measurement resource set is a non-zero power channel state information reference signal NZP-CSI-RS resource set; wherein the target measurement resources comprise at least one of the target resource sets.
  2. 2. The method of claim 1, wherein the target measurement resources comprise at least one target set of resources comprising at least one of: Tracking a reference signal TRS resource set; synchronization signal and physical broadcast channel block SSB burst.
  3. 3. The method of claim 1, wherein the first configuration information further comprises at least one of: target measurement resources in Channel State Information (CSI) resource allocation; and the first parameter is used for indicating the binding relation between the first measurement resource set and the target measurement resource in the CSI resource configuration.
  4. 4. A method according to claim 3, wherein the first set of measurement resources is divisible into a plurality of subsets of measurement resources, each resource in each subset of measurement resources being associated with a target set of resources.
  5. 5. The method of claim 1, wherein the sending doppler shift reporting information to the network side device includes: The terminal receives second configuration information sent by the network side equipment; and according to the second configuration information, doppler frequency offset reporting information is sent to the network side equipment.
  6. 6. The method of claim 5, wherein the second configuration information is used to indicate at least one of: reporting amount configuration of the associated CSI reporting by Doppler frequency offset information reporting; Reporting timer configuration of the associated CSI reporting by Doppler frequency offset information reporting.
  7. 7. The method of claim 6, wherein the reporting amount of the CSI report associated with the doppler bias information reporting is configured to indicate that the reporting amount comprises at least one of: the terminal reports independent Doppler frequency offset information; The method comprises the steps that a terminal reports Doppler frequency offset information and first CSI reporting information, wherein the first CSI reporting information comprises at least one of CSI-RS resource indication CRI, precoding matrix indication PMI, rank indication RI, channel quality indication CQI, layer indication LI, reference signal measurement power RSRP and signal to interference plus noise ratio SINR.
  8. 8. The method of claim 7, wherein the doppler shift information comprises at least one of the following forms: Doppler frequency offset value; At least one difference between the Doppler frequency offset value and the reference value; an absolute value of at least one difference between the Doppler frequency deviation value and the reference value; wherein the reference value is one of the Doppler frequency offset values.
  9. 9. The method of claim 8, wherein in the case of reporting the doppler frequency bias value, the terminal reports at least one of: Reporting a differential quantization result of the Doppler frequency offset value; Reporting the positive and negative of the Doppler frequency offset value and the quantification result of the absolute value of the Doppler frequency offset value; And reporting the positive and negative of the Doppler frequency offset value of the first target in the Doppler frequency offset values and the differential quantization result of the Doppler frequency offset value, wherein the Doppler frequency offset value of the first target is the differential calculation reference of the differential quantization.
  10. 10. The method of claim 9, wherein the differential computation benchmark comprises one of: the absolute value of the Doppler frequency offset value is the largest; the absolute value of the Doppler frequency offset value is the smallest; And (5) an average value of the Doppler frequency offset values.
  11. 11. The method of claim 8 wherein the baseline value indicates a measured doppler bias value for a set of target resources in the TCI state providing a frequency offset QCL reference for the transmission configuration indicated by the network side device.
  12. 12. The method according to claim 8, wherein first reference information corresponding to the reference value is configured to the terminal by the network side device through RRC signaling, and the first reference information is used to determine the reference value.
  13. 13. The method of claim 8 wherein the doppler bias reporting information includes first identification information, the first identification information being used to indicate second reference information corresponding to a reference value for obtaining a doppler bias value, the second reference information being used to determine the reference value.
  14. 14. The method of claim 8, wherein in the case of reporting an absolute value of at least one difference between the doppler bias value and a reference value, the method further comprises: and reporting the positive and negative of the difference value between the Doppler frequency offset value and the reference value.
  15. 15. The method as recited in claim 8, further comprising: and receiving first reporting indication information sent by network side equipment, wherein the first reporting indication information is used for indicating the switching of reporting the Doppler frequency offset information.
  16. 16. The method of claim 6, wherein the reporting timer configuration comprises at least one of: Periodically reporting; semi-continuous reporting; and reporting in a non-periodic manner.
  17. 17. The method of claim 7, wherein in the case that the reporting amount configuration of the CSI report associated with the doppler shift information report indicates that the terminal reports the doppler shift information and the first CSI report information, further comprising: receiving a first reporting period of Doppler frequency offset reporting information sent by network side equipment; wherein the first reporting period includes at least one of: periodically taking values; And the relation between the reporting period of the Doppler frequency offset reporting information and the reporting period of the first CSI reporting information is multiple.
  18. 18. The method as recited in claim 1, further comprising: Transmitting terminal capability information to network equipment; The terminal capability information is used for indicating whether the terminal supports reporting of Doppler frequency offset information.
  19. 19. The method as recited in claim 1, further comprising: receiving first indication information sent by network side equipment through Radio Resource Control (RRC) signaling; the first indication information is used for indicating whether to report Doppler frequency offset information or not.
  20. 20. The Doppler frequency offset reporting method is characterized by comprising the following steps: The method comprises the steps that network side equipment sends first configuration information to a terminal, wherein the first configuration information is used for indicating target measurement resources associated with Doppler frequency offset reporting, and the target measurement resources are used for Doppler frequency offset measurement; the network side equipment receives Doppler frequency offset reporting information sent by the terminal; The Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one transmitting and receiving point TRP obtained by terminal measurement; Wherein the first configuration information includes: A quasi co-located QCL reference source corresponding to a second measurement resource set in CSI resource allocation, wherein the QCL reference source is the target measurement resource; The second measurement resource set can be divided into a plurality of measurement resource subsets, each resource in each measurement resource subset is associated with a target resource set as a QCL reference source, and the second measurement resource set is a non-zero power channel state information reference signal NZP-CSI-RS resource set; wherein the target measurement resources comprise at least one of the target resource sets.

Description

Doppler frequency offset reporting method and device, terminal and network side equipment Technical Field The present application belongs to the field of communications, and in particular, to a method, an apparatus, a terminal, and a network side device for reporting a doppler frequency offset. Background In a scenario with multiple transmission and reception points (TRANSMIT RECEIVE points, TRP), especially a single frequency network (Single Frequency Network, SFN) transmission scenario, there are multiple TRPs in the network transmitting data to a User Equipment (UE, also called a terminal), but due to the different distances between the UE and the multiple TRPs, the delay, phase and doppler frequency offset of the transmission signal from each TRP reaching the UE are different. In particular, the difference in doppler frequency offset from each TRP is large, which may seriously affect the reception performance of the UE. Disclosure of Invention The embodiment of the application provides a Doppler frequency offset reporting method, a device, a terminal and network side equipment, which can solve the problem that the receiving performance of UE is affected due to different time delay, phase and Doppler frequency offset of transmission signals from various TRPs reaching the UE due to different distances between the UE and the TRPs. In a first aspect, a method for reporting doppler frequency offset is provided, including: the terminal performs Doppler frequency offset measurement corresponding to at least one transmitting and receiving point TRP; The terminal sends Doppler frequency offset reporting information to network side equipment according to the measurement result; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a second aspect, a method for reporting doppler frequency offset is provided, including: the network side equipment receives Doppler frequency offset reporting information sent by the terminal; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a third aspect, a doppler frequency offset reporting apparatus is provided, including: the measuring module is used for measuring Doppler frequency offset corresponding to at least one transmitting and receiving point TRP; The first reporting module is used for sending Doppler frequency offset reporting information to the network side equipment according to the measurement result; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a fourth aspect, there is provided a terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect. In a fifth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to perform doppler frequency offset measurement corresponding to at least one transmission and reception point TRP; according to the measurement result, doppler frequency offset reporting information is sent to network side equipment; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a sixth aspect, there is provided a network-side device, including: The second receiving module is used for receiving Doppler frequency offset reporting information sent by the terminal; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a seventh aspect, a network side device is provided, the network side device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions implementing the steps of the method according to the second aspect when executed by the processor. An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to receive doppler frequency offset reporting information sent by a terminal; the Doppler frequency offset reporting information is used for indicating Doppler frequency offset information corresponding to at least one TRP obtained by terminal measurement. In a ninth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the met