Measurement reporting method, terminal device, and network device
This application discloses a measurement reporting method, a terminal device, and a network device. The method is applied to a first terminal device and includes: sending configuration information for a sidelink reference signal received power (RSRP) to a second terminal device; and receiving a measurement result of an RSRP reported by the second terminal device based on the configuration information for the sidelink RSRP. In the embodiments of this application, reporting of an RSRP is triggered through related configuration of the sidelink RSRP, so that a sidelink can support the reporting of the RSRP, and the first terminal device, as a sending device, can know the latest channel state information, so as to better adjust a sending parameter.
1. A method of measurement reporting, performed by a first terminal device, comprising:
sending configuration information for a sidelink reference signal received power (RSRP) to a second terminal device, wherein the configuration information for the sidelink RSRP comprises a threshold for RSRP reporting and a time interval for the RSRP measurement; and
receiving a measurement result of an RSRP reported by the second terminal device when the measurement result of the RSRP reaches the threshold for RSRP reporting and remains above the threshold for RSRP reporting within the time interval for the RSRP measurement.
2. The method according to claim 1 , wherein before sending configuration information for the sidelink RSRP to the second terminal device, the method further comprises:
determining the configuration information for the sidelink RSRP according to pre-configured information or a stipulation in a protocol; or
receiving the configuration information for the sidelink RSRP sent by a network device, wherein the network device is a network device to which the first terminal device belongs.
3. The method according to claim 2 , wherein receiving the configuration information for the sidelink RSRP sent by the network device comprises:
receiving the configuration information for the sidelink RSRP sent by the network device through radio resource control (RRC) signaling or a system information block (SIB) message.
4. The method according to claim 1 , wherein sending configuration information for the sidelink RSRP to the second terminal device comprises:
sending the configuration information for the sidelink RSRP to the second terminal device through radio resource control (RRC) signaling of a PC5 interface.
5. The method according to claim 1 , wherein the configuration information for the sidelink RSRP further comprises:
a cycle for RSRP reporting.
6. The method according to claim 5 , wherein the configuration information for the sidelink RSRP further comprises preset times for which the measurement result of the RSRP reaches the threshold for RSRP reporting within the time interval for the RSRP measurement.
7. The method according to claim 1 , wherein the configuration information for the sidelink RSRP further comprises a quantity of RSRP reporting.
8. The method according to claim 1 , wherein the configuration information for the sidelink RSRP further comprises a reference signal used for sidelink RSRP measurement, wherein the reference signal is triggered semi-persistently or aperiodically.
9. The method according to claim 1 , wherein the configuration information for the sidelink RSRP further comprises a first resource for RSRP reporting, wherein the first resource for RSRP reporting is used for the second terminal device to report the measurement result of the RSRP.
10. The method according to claim 1 , further comprising:
sending the measurement result of the RSRP to a network device, wherein the network device is a network device to which the first terminal device belongs.
11. The method according to claim 10 , wherein before sending the measurement result of the RSRP to the network device, the method further comprises:
receiving configuration information transmitted through a Uu interface and corresponding to the sidelink RSRP sent by the network device; and
wherein sending the measurement result of the RSRP to the network device comprises:
sending the measurement result of the RSRP to the network device according to a target resource and the configuration information transmitted through the Uu interface.
12. The method according to claim 11 , wherein the target resource comprises one of the following:
a pre-allocated resource;
a resource dynamically sent by the network device through L1 signaling or media access control (MAC); or
a resource obtained based on a resource request sent to the network device.
13. The method according to claim 1 , further comprising:
receiving a second resource for RSRP reporting sent by the second terminal device, wherein the second resource for RSRP reporting is used to report the measurement result of the RSRP, and the second resource for RSRP reporting is requested by the second terminal device from a network device to which the second terminal device belongs.
14. A method of measurement reporting, performed by a second terminal device, comprising:
receiving configuration information for a sidelink reference signal received power (RSRP) sent by a first terminal device, wherein the configuration information for the sidelink RSRP comprises a threshold for RSRP reporting and a time interval for the RSRP measurement; and
reporting a measurement result of an RSRP when the measurement result of the RSRP reaches the threshold for RSRP reporting and remains above the threshold for RSRP reporting within the time interval for the RSRP measurement.
15. The method according to claim 14 , wherein receiving configuration information for the sidelink RSRP sent by the first terminal device comprises:
receiving the configuration information for the sidelink RSRP sent by the first terminal device through radio resource control (RRC) signaling of a PC5 interface.
16. The method according to claim 14 , wherein the configuration information for the sidelink RSRP is determined based on pre-configured information or a stipulation in a protocol; or
the configuration information for the sidelink RSRP is sent to the first terminal device by a network device to which the first terminal device belongs.
17. The method according to claim 14 , wherein the configuration information for the sidelink RSRP further comprises
a cycle for RSRP reporting.
18. A method of measurement reporting, performed by a network device, comprising:
setting configuration information for a sidelink reference signal received power (RSRP), wherein the configuration information for the sidelink RSRP comprises a threshold for RSRP reporting and a time interval for the RSRP measurement; and
sending the configuration information for the sidelink RSRP to a first terminal device, wherein the configuration information for the sidelink RSRP, after being sent by the first terminal device to a second terminal device, is used for the second terminal device to report a measurement result of an RSRP when the measurement result of the RSRP reaches the threshold for RSRP reporting and remains above the threshold for RSRP reporting within the time interval for the RSRP measurement.
19. The method according to claim 18 , wherein sending the configuration information for the sidelink RSRP to the first terminal device comprises:
sending the configuration information for the sidelink RSRP to the first terminal device through radio resource control (RRC) signaling or a system information block (SIB) message.
20. The method according to claim 18 , wherein the configuration information for the sidelink RSRP further comprises
a cycle for RSRP reporting.