Feedback information transmission method and apparatus
This application may be applied to Internet of Vehicles, for example, V2X, LTE-V, and V2V, or may be used in fields such as intelligent driving and intelligent Internet of Vehicles. A terminal device determines at least one piece of to-be-sent feedback information or at least one piece of to-be-received feedback information in at least one piece of candidate feedback information, where the at least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and/or at least one piece of candidate feedback information that needs to be received; and the terminal device sends the at least one piece of to-be-sent feedback information, or receives the at least one piece of to-be-received feedback information.
1. A method, performed by a terminal device or a chip in a terminal device, the method comprising:
determining at least one piece of to-be-sent feedback information in a plurality of pieces of candidate feedback information that are to-be-sent, wherein the plurality of pieces of candidate feedback information that are to-be-sent overlap on a time domain resource, and a quantity of the at least one piece of to-be-sent feedback information is less than a quantity of the plurality of pieces of candidate feedback information that are to-be-sent; and
sending the at least one piece of to-be-sent feedback information; and
wherein determining the at least one piece of to-be-sent feedback information in the plurality of pieces of candidate feedback information comprises:
when a quantity of the plurality of pieces of candidate feedback information that are to be sent is greater than or equal to a first threshold, determining the at least one piece of to-be-sent feedback information, wherein the at least one piece of to-be-sent feedback information belongs to the plurality of pieces of candidate feedback information that are to be sent; and
wherein a quantity of the at least one piece of to-be-sent feedback information does not exceed a transmission capability of the terminal device, and the transmission capability comprises a transmission power limit.
2. The method according to claim 1 , wherein the time domain resource is a first time domain resource; and
the sending the at least one piece of to-be-sent feedback information comprises:
sending, by the terminal device, the at least one piece of to-be-sent feedback information on a second time domain resource, wherein the second time domain resource is the same as the first time domain resource, the second time domain resource comprises the first time domain resource, or the second time domain resource partially overlaps the first time domain resource.
3. The method according to claim 1 , wherein the first threshold is determined by the terminal device based on the transmission capability of the terminal device, and the transmission capability further comprises a quantity limit on feedback information simultaneously transmitted.
4. The method according to claim 1 , wherein the at least one piece of to-be-sent feedback information is physical sidelink feedback channel (PSFCH) information.
5. The method according to claim 1 , wherein the plurality of pieces of candidate feedback information comprises feedback information of a sidelink and feedback information of an uplink/a downlink between the terminal device and a network device.
6. An apparatus, comprising:
one or more processors; and
a memory, wherein the memory stores a computer program, and when executing the computer program stored in the memory, the one or more processors execute operations comprising:
determining at least one piece of to-be-sent feedback information in a plurality of pieces of candidate feedback information that are to be sent, wherein the plurality of pieces of candidate feedback information that are to be sent overlap on a time domain resource, and a quantity of the at least one piece of to-be-sent feedback information is less than a quantity of the plurality of pieces of candidate feedback information that are to-be-sent;
sending the at least one piece of to-be-sent feedback information; and
wherein determining the at least one piece of to-be-sent feedback information in the plurality of pieces of candidate feedback information comprises:
when a quantity of the plurality of pieces of candidate feedback information that are to be sent is greater than or equal to a first threshold, determining the at least one piece of to-be-sent feedback information, wherein the at least one piece of to-be-sent feedback information belongs to the plurality of pieces of candidate feedback information that are to be sent; and
wherein a quantity of the at least one piece of to-be-sent feedback information does not exceed a transmission capability of the apparatus, and the transmission capability comprises a transmission power limit.
7. The apparatus according to claim 6 , wherein the time domain resource is a first time domain resource; and
the one or more processors further execute operations comprising:
sending the at least one piece of to-be-sent feedback information on a second time domain resource, wherein the second time domain resource is the same as the first time domain resource, the second time domain resource comprises the first time domain resource, or the second time domain resource partially overlaps the first time domain resource.
8. The apparatus according to claim 6 , wherein the first threshold is determined based on the transmission capability of the apparatus, and the transmission capability further comprises a quantity limit on feedback information simultaneously transmitted.
9. The apparatus according to claim 6 , wherein the at least one piece of to-be-sent feedback information is physical sidelink feedback channel (PSFCH) information.
10. The apparatus according to claim 6 , wherein the plurality of pieces of candidate feedback information comprises feedback information of a sidelink and feedback information of an uplink/a downlink between the apparatus and a network device.