Communication method and communications apparatus
A method includes: a first terminal device receives first information from a network device, where the first information includes an indication information of a first unicast connection and a reference signal configuration corresponding to the first unicast connection, the reference signal configuration is used by the first terminal device to send a reference signal to a second terminal device; and the first terminal device sends the reference signal to the second terminal device on a sidelink based on the reference signal configuration.
1. A communication apparatus, applied to a first terminal device, comprising:
at least one processor, and a memory storing instructions for execution by the at least one processor;
wherein, when executed, the instructions cause the communication apparatus to perform operations comprising:
receiving first information from a network device, wherein the first information comprises a reference signal configuration of a first unicast connection and an identifier of the first unicast connection, and the first unicast connection is a unicast connection established on a sidelink between the communication apparatus and a second terminal device; and
sending a reference signal to the second terminal device on the sidelink based on the reference signal configuration.
2. The communication apparatus according to claim 1 , wherein the reference signal configuration comprises a first parameter configuration, and the first parameter configuration comprises a configuration used by the communication apparatus to send the reference signal to the second terminal device.
3. The communication apparatus according to claim 2 , wherein the first parameter configuration comprises a time-frequency domain position parameter.
4. The communication apparatus according to claim 1 , wherein the first information further comprises a measurement configuration of the first unicast connection, and the measurement configuration is used by the second terminal device to perform measurement.
5. The communication apparatus according to claim 4 , wherein the measurement configuration comprises a second parameter configuration, the second parameter configuration comprises a parameter configuration used by the second terminal device to perform measurement, and the second parameter configuration comprises one or more of the following:
a measurement quantity configuration, a measurement report configuration, or a measurement identifier.
6. The communication apparatus according to claim 4 , wherein the operations further comprise:
receiving second information from the second terminal device, wherein the second information indicates that the second terminal device successfully completes configuration.
7. The communication apparatus according to claim 4 , wherein the operations further comprise:
sending the measurement configuration to the second terminal device.
8. The communication apparatus according to claim 1 , wherein the operations further comprise:
receiving a measurement result from the second terminal device, wherein the measurement result is a result obtained by the second terminal device by measuring the reference signal on the first unicast connection.
9. A communication apparatus, applied to a network device, comprising:
at least one processor, and a memory storing instructions for execution by the at least one processor;
wherein, when executed, the instructions cause the communication apparatus to perform operations comprising:
generating first information, wherein the first information comprises a reference signal configuration of a first unicast connection and an identifier of the first unicast connection, the reference signal configuration is used by a first terminal device to send a reference signal to a second terminal device, and the first unicast connection is a unicast connection established on a sidelink between the first terminal device and the second terminal device; and
sending the first information to the first terminal device.
10. The communication apparatus according to claim 9 , wherein the reference signal configuration comprises a first parameter configuration, and the first parameter configuration comprises a parameter configuration used by the first terminal device to send the reference signal to the second terminal device.
11. The communication apparatus according to claim 10 , wherein the first parameter configuration comprises a time-frequency domain position parameter.
12. The communication apparatus according to claim 9 , wherein the first information further comprises a measurement configuration of the first unicast connection, and the measurement configuration is used by the second terminal device to perform measurement.
13. A communication method, comprising:
receiving, by a first terminal device, first information from a network device, wherein the first information comprises a reference signal configuration of a first unicast connection and an identifier of the first unicast connection, and the first unicast connection is a unicast connection established on a sidelink between the first terminal device and a second terminal device; and
sending, by the first terminal device, a reference signal to the second terminal device on the sidelink based on the reference signal configuration.
14. The communication method according to claim 13 , wherein the reference signal configuration comprises a first parameter configuration, and the first parameter configuration comprises a configuration used by the first terminal device to send the reference signal to the second terminal device.
15. The communication method according to claim 14 , wherein the first parameter configuration comprises a time-frequency domain position parameter.
16. The communication method according to claim 13 , wherein the first information further comprises a measurement configuration of the first unicast connection, and the measurement configuration is used by the second terminal device to perform measurement.
17. The communication method according to claim 16 , wherein the measurement configuration comprises a second parameter configuration, the second parameter configuration comprises a parameter configuration used by the second terminal device to perform measurement, and the second parameter configuration comprises one or more of the following:
a measurement quantity configuration, a measurement report configuration, or a measurement identifier.
18. The communication method according to claim 16 , further comprising:
receiving, by the first terminal device, second information sent from the second terminal device, wherein the second information indicates that the second terminal device successfully completes configuration.
19. The communication method according to claim 16 , further comprising:
receiving, by the first terminal device, a measurement result from the second terminal device, wherein the measurement result is a result obtained by the second terminal device by measuring the reference signal on the first unicast connection.
20. The communication method according to claim 16 , wherein the method further comprises:
sending the measurement configuration to the second terminal device.
21. A non-transitory computer readable storage medium, storing at least one instruction, which when executed by at least one processor, causes a communication apparatus comprising the at least one processor to:
receive first information sent from a network device, wherein the first information comprises a reference signal configuration of a first unicast connection and an identifier of the first unicast connection, and the first unicast connection is a unicast connection established on a sidelink between the communication apparatus and a second terminal device; and
send a reference signal to the second terminal device on the sidelink based on the reference signal configuration.
22. The non-transitory computer readable storage medium according to claim 20 , wherein the reference signal configuration comprises a first parameter configuration, and the first parameter configuration comprises a configuration used by the communication apparatus to send the reference signal to the second terminal device.
23. The non-transitory computer readable storage medium according to claim 22 , wherein the first parameter configuration comprises a time-frequency domain position parameter.
24. The non-transitory computer readable storage medium according to claim 21 , wherein the first information further comprises a measurement configuration of the first unicast connection, and the measurement configuration is used by the second terminal device to perform measurement.
25. The non-transitory computer readable storage medium according to claim 24 , wherein the measurement configuration comprises a second parameter configuration, the second parameter configuration comprises a parameter configuration used by the second terminal device to perform measurement, and the second parameter configuration comprises one or more of the following:
a measurement quantity configuration, a measurement report configuration, or a measurement identifier.
26. The non-transitory computer readable storage medium according to claim 24 , wherein the at least one instruction, when executed by the at least one processor, further causes the communication apparatus comprising the at least one processor to:
receive second information sent from the second terminal device, wherein the second information indicates that the second terminal device successfully completes configuration.
27. The non-transitory computer readable storage medium according to claim 24 , wherein the at least one instruction, when executed by the at least one processor, further causes the communication apparatus comprising the at least one processor to:
receive a measurement result from the second terminal device, wherein the measurement result is a result obtained by the second terminal device by measuring the reference signal on the first unicast connection.
28. The non-transitory computer readable storage medium according to claim 24 , wherein the at least one instruction, when executed by the at least one processor, further causes the communication apparatus comprising the at least one processor to:
send the measurement configuration to the second terminal device.