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US-12621806-B2 - Wireless communication method, and device

US12621806B2US 12621806 B2US12621806 B2US 12621806B2US-12621806-B2

Abstract

Provided in the embodiments of the present application are a wireless communication method and a device. The method comprises: a first terminal receiving sidelink data, which is sent by a second terminal on a plurality of carriers; and according to at least one of the following: the plurality of carriers, first indication information, carrier configuration information of a PSFCH, and a CBR, the first terminal selecting at least one carrier for transmitting the PSFCH.

Inventors

  • Zhenshan Zhao
  • Shichang Zhang

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260505
Application Date
20231019

Claims (14)

  1. 1 . A wireless communication method, comprising: receiving, by a first terminal, sidelink data sent by a second terminal on multiple carriers; and selecting, by the first terminal, at least one carrier for transmission a physical sidelink feedback channel (PSFCH) according to a channel busy ratio (CBR), wherein, the PSFCH is configured to carry sidelink feedback information of the sidelink data on the multiple carriers, wherein the method further comprises: determining, by the first terminal, a set formed by carriers whose CBR is smaller than a first threshold among the multiple carriers as a third carrier set; and selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set.
  2. 2 . The method according to claim 1 , wherein the at least one carrier for transmission the PSFCH is further selected according to multiple carriers, and the method comprises: selecting, by the first terminal, at least one carrier for transmitting the PSFCH among the multiple carriers.
  3. 3 . The method according to claim 1 , wherein the at least one carrier for transmission the PSFCH is further selected according to first indication information, and the first indication information is configured to indicate at least one carrier for transmitting the PSFCH, and the method further comprises: selecting, by the first terminal, at least one carrier for transmitting the PSFCH according to the index information.
  4. 4 . The method according to claim 3 , wherein the index information is carrier index information, and the selecting, by the first terminal, at least one carrier for transmitting the PSFCH according to the index information, comprises: selecting, by the first terminal, a carrier corresponding to the carrier index information as the carrier for transmitting the PSFCH.
  5. 5 . The method according to claim 1 , wherein the at least one carrier for transmission the PSFCH is further selected according to carrier configuration information of the PSFCH, and wherein the carrier configuration information of the PSFCH is used to configure a first carrier set for transmitting the PSFCH.
  6. 6 . The method according to claim 1 , wherein the selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set, comprises: selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set in an order of CBR from low to high.
  7. 7 . The method according to claim 1 , wherein the selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set, comprises: determining, by the first terminal, a first intersection set of the third carrier set and a fourth set of carriers formed by the multiple carriers; and selecting, by the first terminal, at least one carrier for transmission the PSFCH from the first intersection set.
  8. 8 . The method according to claim 1 , wherein the selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set, comprises: determining, by the first terminal, a second intersection set of the third carrier set and a fifth carrier set, wherein the fifth carrier set is a carrier set formed by at least one carrier indicated by the first indication information; and selecting, by the first terminal, at least one carrier for transmission the PSFCH from the second intersection set.
  9. 9 . The method according to claim 1 , wherein the selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third carrier set, comprises: determining, by the first terminal, a third intersection set of the third carrier set and a first carrier set, wherein the first carrier set is a carrier set configured by the carrier configuration information of the PSFCH; and selecting, by the first terminal, at least one carrier for transmission the PSFCH from the third intersection set.
  10. 10 . The method according to claim 1 , wherein the sidelink data sent on the multiple carriers comprises: sidelink data sent simultaneously, and/or sidelink data not sent simultaneously.
  11. 11 . The method according to claim 1 , wherein the sidelink data sent on the multiple carriers belong to a same data block or different data blocks.
  12. 12 . The method according to claim 1 , wherein the sidelink feedback information corresponding to the sidelink data sent on the multiple carriers is carried on one PSFCH, or carried on different PSFCHs.
  13. 13 . The method according to claim 1 , wherein the carrier for transmitting the first sidelink data is different from the carrier for transmitting the PSFCH corresponding to the first sidelink data; and wherein, the first sidelink data is one piece of sidelink data among the sidelink data sent on the plurality of carriers.
  14. 14 . A terminal device, comprising: a processor and a memory, the memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, to execute a wireless communication method, comprising: receiving, by the terminal device, sidelink data sent by a second terminal on multiple carriers; and selecting, by the terminal device, at least one carrier for transmission a physical sidelink feedback channel (PSFCH) according to a channel busy ratio (CBR), wherein, the PSFCH is configured to carry sidelink feedback information of the sidelink data on the multiple carriers wherein the processor is further configured to: determine a set formed by carriers whose CBR is smaller than a first threshold among the multiple carriers as a third carrier set; and select at least one carrier for transmission the PSFCH from the third carrier set.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a continuation application of International Application No. PCT/CN2021/089013, filed on Apr. 22, 2021, and the entire contents thereof are incorporated herein by reference. TECHNICAL FIELD The embodiments of the present application relate to the communication field, and more specifically, to a wireless communication method and device. BACKGROUND In the new radio (NR)-vehicle to everything (V2X), in order to improve reliability, a sidelink feedback channel is introduced. For example, for unicast transmission, the sending terminal sends sidelink data to the receiving terminal, and the receiving terminal sends Hybrid Automatic Repeat request (HARQ) feedback information to the sending terminal, such as acknowledge (Acknowledge, ACK) information or negative acknowledge (NACK) information, the sending terminal judges whether it needs to retransmit the sidelink data according to the feedback information of the receiving terminal. Wherein, the HARQ feedback information is carried in the sidelink feedback channel, such as a physical sidelink feedback channel (PSFCH). At present, the transmission of the sidelink data adopts a single-carrier transmission mode. Correspondingly, when sending the PSFCH, the terminal at the receiving end uses the same carrier as that of the sidelink data for information transmission. SUMMARY Embodiments of the present application provides a method and device for wireless communication. In a first aspect, a wireless communication method is provided, including: a first terminal receive sidelink data sent by a second terminal on multiple carriers; and the first terminal selects at least one carrier for transmission a PSFCH according to at least one of first indication information, carrier configuration information of the PSFCH, CBR and the multiple carriers; wherein, the PSFCH is configured to carry sidelink feedback information of the sidelink data, and the first indication information is configured to indicate at least one carrier for transmitting the PSFCH. In a second aspect, a wireless communication method is provided, including: a second terminal sends sidelink data to a first terminal on multiple carriers; and the second terminal sends first indication information to the first terminal, or the sidelink data includes the first indication information; wherein, the first indication information is configured to indicate at least one carrier for transmitting a PSFCH, and the PSFCH is configured to carry sidelink feedback information of the sidelink data. In a third aspect, there is provided a terminal device, the terminal device is a first terminal, including: a communication unit and a processing unit, the communication unit is configured to receive sidelink data sent by a second terminal on multiple carriers; and the processing unit is configured to select at least one carrier for transmission a PSFCH according to at least one of first indication information, carrier configuration information of the PSFCH, CBR, and the multiple carriers; wherein, the PSFCH is configured to carry sidelink feedback information of the sidelink data, and the first indication information is configured to indicate at least one carrier for transmitting the PSFCH. In a fourth aspect, a terminal device is provided, the terminal device is a second terminal, and includes: a communication unit configured to: send sidelink data to a first terminal on multiple carriers; and send first indication information to the first terminal, or, the sidelink data includes first indication information; wherein, the first indication information is configured to indicate at least one carrier for transmitting a PSFCH, and the PSFCH is configured to carry sidelink feedback information of the sidelink data. In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to execute the method in the above first aspect or its implementable manner. In a sixth aspect, a terminal device is provided, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to execute the method in the above second aspect or its implementable manner. In a seventh aspect, an apparatus is provided for realizing the method in any one of the first aspect to the second aspect above. Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, to cause a device installed with the apparatus to execute the method in any one of the first aspect to the second aspect above. In an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in any one of the above first