Granted Patent B2

US 12,342,289 · App. 17/626,473 · Granted Jun 24, 2025

Inventor: Xing Yang (Beijing, CN)

Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

H04W52/24H04W4/40H04W24/10H04W52/383

Abstract

Claims (81)

1. A method of power control for Sidelink communication, comprising:

obtaining, by a first User Equipment (UE) in Vehicle to Everything (V2X), a measurement result by measuring a reference signal sent by a second UE; and

reporting, by the first UE, upon a variation value of the measurement result of the reference signal being greater than a threshold value, a measurement report of the reference signal to the second UE based on the measurement result of the reference signal, the measurement report being used for power control performed by the second UE,

wherein the variation value indicates a change in the measurement result of the reference signal relative to a last reported measurement result; and

wherein the method further comprises:

receiving, by the first UE, a first signal type of the reference signal and a first threshold value configured by the second UE before receiving the reference signal from the second UE.

2. The method of claim 1 , wherein reporting the measurement report of the reference signal to the second UE based on the measurement result of the reference signal comprises:

sending a first unicast Sidelink Radio Resource Control (RRC) message to the second UE, wherein

the first unicast Sidelink RRC message comprises a signal type of the reference signal and higher layer filtered measurement result.

3. The method of claim 1 , further comprising:

wherein receiving, by the first UE, the first signal type of the reference signal and the first threshold value configured by the second UE comprises:

receiving, by the first UE, a second unicast Sidelink Radio Resource Control (RRC) message from the second UE, wherein the second unicast Sidelink RRC message comprises the first signal type of the reference signal and the first threshold value.

4. The method of claim 1 , further comprising:

receiving, by the first UE, a second signal type of the reference signal and a second threshold value configured by an access network device before receiving the reference signal from the second UE;

wherein receiving, by the first UE, the second signal type of the reference signal and the second threshold value configured by the access network device comprises at least one of following steps:

receiving, by the first UE, a broadcast signaling from the access network device, wherein the broadcast signaling comprises the second signal type of the reference signal and the second threshold value; or

receiving, by the first UE, a dedicated signaling from the access network device, wherein the dedicated signaling comprises the second signal type of the reference signal and the second threshold value.

5. The method of claim 1 , further comprising:

receiving, by the first UE, the first signal type and the first threshold value configured by the second UE before receiving the reference signal from the second UE;

receiving, by the first UE, a second signal type and a second threshold value configured by an access network device before receiving the reference signal from the second UE; and

determining, by the first UE, the first signal type as a signal type of the reference signal and determining the first threshold value as the threshold value.

6. The method of claim 1 , wherein a signal type of the reference signal comprises at least one of following types:

Sidelink Synchronization Signal (SLSS);

Sidelink Channel State Information Reference Signal (Sidelink CSI-RS); or

Demodulation Reference Signal (DMRS).

7. A non-transitory computer-readable storage medium, storing at least one instruction, at least one segment of a program, a code set or an instruction set, wherein

the at least one instruction, the at least one segment of a program, the code set or the instruction set is loaded and executed by a processor to implement the method of power control for Sidelink communication of claim 1 .

8. A method of power control for Sidelink communication, comprising:

sending, by a second User Equipment (UE) in Vehicle to Everything (V2X), a reference signal to a first UE;

receiving, by the second UE, a measurement report of the reference signal reported by the first UE, wherein:

the measurement report is reported by the first UE upon a variation value of a measurement result of the reference signal being greater than a threshold value, and

the variation value indicates a change in the measurement result of the reference signal relative to a last reported measurement result; and

performing, by the second UE, power control during V2X communication based on the measurement report of the reference signal;

wherein the method further comprises:

configuring, by the second UE, a first signal type of the reference signal and a first threshold value to the first UE before sending the reference signal to the first UE.

9. The method of claim 8 , wherein the second UE receiving the measurement report of the reference signal reported by the first UE comprises:

receiving, by the second UE, a first unicast Sidelink Radio Resource Control (RRC) message from the first UE, wherein

the first unicast Sidelink RRC message comprises a signal type of the reference signal and higher layer filtered measurement result.

10. The method of claim 8 ,

wherein the second UE configuring the first signal type of the reference signal and the first threshold value to the first UE comprises:

sending, by the second UE, a second unicast Sidelink RRC message to the first UE, wherein the second unicast Sidelink RRC message comprises the first signal type of the reference signal and the first threshold value.

11. The method of claim 10 , wherein a signal type of the reference signal comprises at least one of following types:

Sidelink Synchronization Signal (SLSS);

Sidelink Channel State Information Reference Signal (Sidelink CSI-RS); or

Demodulation Reference Signal (DMRS).

12. A Vehicle to Everything (V2X) device, comprising:

a processor; and

a transceiver connected to the processor,

wherein the processor is configured to load and execute executable instructions to implement the method of power control for Sidelink communication of claim 8 .

13. The V2X device of claim 12 , wherein the processor is further configured to:

receive a first unicast Sidelink Radio Resource Control (RRC) message from the first UE, wherein the first unicast Sidelink RRC message comprises a signal type of the reference signal and higher layer filtered measurement result.

14. The V2X device of claim 12 ,

wherein the processor configures the first signal type of the reference signal and the first threshold value to the first UE by:

sending a second unicast Sidelink Radio Resource Control (RRC) message to the first UE, wherein the second unicast Sidelink RRC message comprises the first signal type of the reference signal and the first threshold value.

15. A Vehicle to Everything (V2X) device, comprising:

a processor; and

a transceiver connected to the processor,

wherein the processor is configured to load and execute executable instructions to:

obtain a measurement result by measuring a reference signal sent by a second UE; and

report, upon a variation value of the measurement result of the reference signal being greater than a threshold value, a measurement report of the reference signal to the second UE based on the measurement result of the reference signal, the measurement report being used for power control performed by the second UE,

wherein the variation value indicates a change in the measurement result of the reference signal relative to a last reported measurement result; and

wherein the processor is further configured to:

receive a first signal type of the reference signal and the first threshold value configured by the second UE before receiving the reference signal from the second UE.

16. The V2X device of claim 15 , wherein the processor is further configured to:

send a first unicast Sidelink Radio Resource Control (RRC) message to the second UE, wherein the first unicast Sidelink RRC message comprises a signal type of the reference signal and high-layer filtered measurement result.

17. The V2X device of claim 15 ,

wherein the processor is configured to receive the first signal type of the reference signal and the first threshold value configured by the second UE by:

receiving a second unicast Sidelink Radio Resource Control (RRC) message from the second UE, wherein the second unicast Sidelink RRC message comprises the first signal type of the reference signal and the first threshold value.

18. The V2X device of claim 15 , wherein the processor is further configured to:

receive a second signal type of the reference signal and a second threshold value configured by an access network device before receiving the reference signal from the second UE;

wherein the processor is configured to receive the second signal type of the reference signal and the second threshold value configured by the access network device by at least one of following steps:

receiving a broadcast signaling from the access network device, wherein the broadcast signaling comprises the second signal type of the reference signal and the second threshold value; or

receiving a dedicated signaling from the access network device, wherein the dedicated signaling comprises the second signal type of the reference signal and the second threshold value.

19. The V2X device of claim 15 , wherein the processor is further configured to:

receive the first signal type and the first threshold value configured by the second UE before receiving the reference signal from the second UE;

receive a second signal type and a second threshold value configured by an access network device before receiving the reference signal from the second UE; and

determine the first signal type as a signal type of the reference signal and determine the first threshold value as the threshold value.

20. The V2X device of claim 15 , wherein a signal type of the reference signal comprises at least one of following types:

Sidelink Synchronization Signal (SLSS);

Sidelink Channel State Information Reference Signal (Sidelink CSI-RS); or

Demodulation Reference Signal (DMRS).

Assignments (1)

Continuity (1)

References Cited (12)