Signal processing method and device

Patent metadata

Field	Value
Publication number	US-12316564-B2
Application number	US-202017756040-A
Country	US
Kind code	B2
Filing date	Oct 20, 2020
Priority date	Nov 14, 2019
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A signal processing method includes: sending first information to a terminal, the first information including: relation information of a TRS or a CSI-RS with an SRS, and the first information being used to indicate that the terminal adjust a sending frequency of the SRS according to a TRS or CSI-RS estimated frequency.

First claim

What is claimed is:

1. A signal processing method, applied to a network device, the method comprising:
determining, by the network device, a plurality of Tracking Reference Signals (TRSs) or Channel State Information-Reference Signals (CSI-RSs) with which a terminal performs frequency estimation;
transmitting, by the network device, each of the plurality of TRSs or CSI-RSs to the terminal through a respective one of a plurality of antenna panels of the network device;
transmitting, to the terminal, first information,
wherein the first information comprises information of association of the plurality of TRSs or CSI-RSs with a plurality of sounding reference signals (SRSs), wherein each of the plurality of SRSs is associated with a respective one of the plurality of TRSs or CSI-RS, and the first information indicates the terminal to adjust a transmission frequency of each of the plurality of SRSs according to frequency information estimated by the terminal based on a respective one of the plurality of TRSs or CSI-RSs,
wherein the frequency information comprises Doppler frequency offset.

2. The method of claim 1 , wherein the information of the plurality of TRSs or CSI-RSs associated with the plurality of SRSs comprises at least one of:
parameters of the plurality of SRSs comprising TRS identifiers (IDs) or CSI-RS IDs; or
transmission configuration indication (TCI) states of the plurality of SRSs, wherein quasi-colocations (QCLs) in the TCI states are associated with the TRS IDs or the CSI-RS IDs.

3. The method of claim 2 , wherein each of the parameters of the plurality of SRSs is any one of:
a radio resource control (RRC) parameter;
a media access control control element (MAC CE) parameter; or
a downlink control information (DCI) parameter.

4. The method of claim 1 , wherein the determining, by the network device, the plurality of TRSs or CSI-RSs with which the terminal performs the frequency estimation comprises:
determining, according to downlink channel quality, the plurality of TRSs or CSI-RSs with which the terminal performs the frequency estimation; or
determining, according to uplink channel quality, the plurality of TRSs or CSI-RSs with which the terminal performs the frequency estimation.

5. The method of claim 1 , wherein the determining, by the network device, the plurality of TRSs or the CSI-RSs with which the terminal performs the frequency estimation comprises:
determining, according to indication information reported by the terminal, the plurality of TRSs or the CSI-RSs with which the terminal performs the frequency estimation, the indication information comprising a TRS identifier (ID) or a CSI-RS ID, or one or more SRSs corresponding to one or more TRSs or CSI-RSs.

6. The method of claim 1 , further comprising:
receiving an SRS from the terminal; and
determining, according to the received SRS, frequency information estimated by the network device.

7. The method of claim 6 , further comprising at least one of:
determining a first frequency which is half of the frequency information estimated by the network device, and transmitting, through an Xn interface, the first frequency to other network devices around the network device; or
transmitting a subsequent physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) or a downlink reference signal with the first frequency.

8. The method of claim 6 , wherein before receiving the SRS from the terminal, the method further comprises:
transmitting the plurality of TRSs or CSI-RSs to the terminal with a frequency not subjected to frequency offset adjustment.

9. A non-transitory computer-readable storage medium, having stored thereon a computer program, wherein the computer program, when executed by the processor, implements steps of the signal processing method of claim 1 .

10. A signal processing method, applied to a terminal, the method comprising:
receiving, from a network device, a plurality of Tracking Reference Signals (TRSs) or Channel State Information-Reference Signals (CSI-RSs), wherein each of the plurality of TRSs or CSI-RSs is transmitted through a respective one of a plurality of antenna panels of the network device;
receiving first information, wherein the first information comprises information of association of the plurality of TRSs or CSI-RSs with a plurality of sounding reference signals (SRSs), wherein each of the plurality of SRSs is associated with a respective one of the plurality of TRSs or CSI-RS, and the first information indicates the terminal to adjust a transmission frequency of each of the plurality of SRSs according to frequency information estimated by the terminal based on a respective one of the plurality of TRSs or CSI-RSs,
wherein the frequency information comprises Doppler frequency offset.

11. The method of claim 10 , wherein the information of the plurality of TRSs or CSI-RSs associated with the plurality of SRSs comprises at least one of:
parameters of the plurality of SRSs comprising TRS identifiers (IDs) or CSI-RS IDs; or
transmission configuration indication (TCI) states of the plurality of SRSs, wherein quasi-colocation (QCLs) in the TCI states is associated with the TRS IDs or the CSI-RS IDs.

12. The method of claim 10 , wherein each of parameters of the plurality of SRSs is any one of:
a radio resource control (RRC) parameter;
a media access control control element (MAC CE) parameter; or a downlink control information (DCI) parameter.

13. The method of claim 10 , further comprising:
reporting indication information to the network device, wherein the indication information indicates a TRS or a CSI-RS with which the terminal performs frequency offset estimation, and comprises a TRS identifier (ID) or a CSI-RS ID, or one or more SRSs corresponding to one or more TRSs or CSI-RSs.

14. A terminal, comprising:
a second processor; and
a second transceiver, configured to implement steps of the signal processing method of claim 10 .

15. A network device, comprising:
a first processor; and
a first transceiver,
wherein the first processor is configured to determine a plurality of Tracking Reference Signals (TRSs) or Channel State Information-Reference Signals (CSI-RSs) with which a terminal performs frequency estimation,
wherein the first transceiver is configured to:
transmit each of the plurality of TRSs or CSI-RSs to the terminal through a respective one of a plurality of antenna panels of the network device; and
transmit first information to the terminal, wherein the first information comprises information of association of the plurality of TRSs or CSI-RSs with a plurality of sounding reference signals (SRSs), wherein each of the plurality of SRSs is associated with a respective one of the plurality of TRSs or CSI-RS, and the first information indicates the terminal to adjust a transmission frequency of each of the plurality of SRSs according to frequency information estimated by the terminal based on a respective one of the plurality of TRSs or CSI-RS,
wherein the frequency information comprises Doppler frequency offset.

16. The network device of claim 15 , wherein the information of the plurality of TRSs or CSI-RSs associated with the plurality of SRSs comprises at least one of:
parameters of the plurality of SRSs comprising TRS identifiers (IDs) or CSI-RS IDs; or
transmission configuration indication (TCI) states of the plurality of SRSs, wherein quasi-colocations (QCLs) in the TCI states are associated with the TRS IDs or the CSI-RS IDs.

17. The network device of claim 16 , wherein each of the p

Assignees

• China Mobile Comm Co Ltd Res Inst
• China Mobile Communications Group Co Ltd

Inventors

• Li Yan
• Wang Fei
• Xia Liang
• Jin Jing
• Zheng Yi
• Wang Qixing

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W92/20

  between access points · CPC title

• H04W72/1273

  of downlink data flows · CPC title

• H04W88/085

  Access point devices with remote components · CPC title

• H04L2027/0093

  Intermittant signals · CPC title