CN-122002527-A - Communication method and device

Abstract

The embodiment of the application provides a communication method and a communication device, which can improve the positioning accuracy of a terminal. The method includes the first terminal device sending a first reference signal to the network device, the first reference signal being used to determine location information of the first terminal device, the first terminal device sending a third reference signal to the second terminal device, the second terminal device sending a second reference signal to the first terminal device, the first terminal device determining first information based on the second reference signal, the first information being used to determine location information of the second terminal device, the second terminal device determining second information based on the third reference signal, the second information being used to determine location information of the second terminal device, the location information of the second terminal device being determined based on the location information of the first terminal device.

Inventors

• LIU MENGTING
• GAO XIN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A communication method applied to a first terminal device, the method comprising: Transmitting a first reference signal, wherein the first reference signal is used for determining position information of the first terminal device; receiving a second reference signal from a second terminal device; and determining first information based on the second reference signal, wherein the first information is used for determining the position information of the second terminal device, and the position information of the second terminal device is determined based on the second reference signal and the position information of the first terminal device.
2. 2. The method according to claim 1, wherein the method further comprises: and receiving indication information, wherein the indication information is used for indicating the first terminal device.
3. 3. The method according to claim 2, wherein the method further comprises: the second reference signal from the second terminal device is received based on the indication information.
4. 4. The method of claim 2, wherein the indication information comprises at least one of identification information of the first terminal device, identification information or configuration information of the first reference signal, and acknowledgement information ACK.
5. 5. The method of claim 2, wherein the indication information is from a satellite.
6. 6. The method of claim 1, wherein the first information comprises first measurement information, the first measurement information being derived based on the second reference signal.
7. 7. The method of claim 6, wherein the first measurement information comprises at least one of delay information, angle information, phase information, received signal strength information, frequency information.
8. 8. The method of claim 6, wherein the first measurement information further comprises at least one of identification information of the second terminal device, a measurement time of the second reference signal, and a measurement quality of the second reference signal.
9. 9. The method according to claim 1, wherein the method further comprises: and transmitting a third reference signal, wherein the measurement result of the third reference signal is used for determining the position information of the second terminal device.
10. 10. The method according to claim 1, wherein the method further comprises: and receiving the position information of the first terminal device.
11. 11. The method of claim 1, wherein the first information comprises location information of the second terminal device.
12. 12. The method of claim 11, wherein the method further comprises: Determining first measurement information, the first measurement information being obtained based on the second reference signal, and/or receiving second information from the second terminal device, the second information including second measurement information, the second measurement information being obtained based on a third reference signal transmitted by the first terminal device; determining location information of the second terminal device based on the location information of the first terminal device and at least one of the first measurement information or the second measurement information.
13. 13. The method of claim 11, wherein the second measurement information comprises at least one of delay information, angle information, phase information, received signal strength information, frequency information.
14. 14. The method according to claim 12 or 13, wherein the second measurement information further comprises at least one of identification information of the first terminal device, identification information of the second terminal device, measurement time of the third reference signal, measurement quality of the third reference signal.
15. 15. The method according to claim 6 or 11, characterized in that the method further comprises: and sending the first information.
16. 16. The method according to claim 1, wherein the method further comprises: And receiving reference signal configuration information, wherein the reference signal configuration information is used for indicating at least one of configuration information of the second reference signal, configuration information of the third reference signal, association relation between the second reference signal and the second terminal device and association relation between the third reference signal and the first terminal device.
17. 17. A communication method applied to a second terminal device, the method comprising: Receiving a third reference signal from the first terminal device; And determining second information based on the third reference signal, wherein the second information is used for determining the position information of the second terminal device, and the position information of the second terminal device is determined based on the third reference signal and the position information of the first terminal device.
18. 18. The method of claim 17, wherein the method further comprises: and receiving indication information, wherein the indication information is used for indicating the first terminal device.
19. 19. The method of claim 18, wherein the method further comprises: the third reference signal from the first terminal device is received based on the indication information.
20. 20. The method of claim 17, wherein the indication information comprises at least one of identification information of the first terminal device, identification information or configuration information of the first reference signal, and acknowledgement information ACK.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background With the development of communication technology, a terminal can generally realize accurate positioning through interaction with a satellite, a base station and other network devices. In order to ensure positioning accuracy, a certain number of network devices capable of participating in the terminal positioning process are to be satisfied. If the number of network devices capable of participating in the terminal positioning process is insufficient, the positioning accuracy of the terminal can be seriously affected. In some scenes, due to the shielding of obstacles such as trees, high buildings and the like or the influence of factors such as deployment density of network devices, the network devices which can participate in the terminal positioning process are possibly insufficient, the high-precision positioning requirement cannot be met, and therefore the positioning performance of the terminal cannot be guaranteed. Disclosure of Invention The application provides a communication method and a communication device, which can improve the positioning accuracy of a terminal to a certain extent. In order to achieve the above purpose, the application adopts the following technical scheme: In a first aspect, an embodiment of the present application provides a communication method, which may be performed by a first terminal device. The first terminal device may be a terminal device, a component (such as a circuit, a chip, a system on a chip, or a processor) in the terminal device, or a logic node, a logic module, or software that can implement all or part of the functions of the terminal device. The method includes transmitting a first reference signal for determining location information of a first terminal device. A reference signal from a second terminal device is received and first information for determining location information of the second terminal device is determined based on the second reference signal. Wherein the location information of the second terminal device is determined based on the second reference signal and the location information of the first terminal device. Based on the above technical solution, the first terminal device may send a first reference signal, which may be used to determine the location information of the first terminal device. The first terminal device may obtain first information for determining the second terminal device location information based on the second reference signal from the second terminal device. For example, the first terminal device may determine relative position information with the second terminal device based on the second reference signal to determine the first information. In this way, if the position information of the first terminal device is determined and the relative position information between the first terminal device and the second terminal device is determined, the position information of the second terminal device can be determined based on the position information of the first terminal device and the relative position information between the first terminal device and the second terminal device. In this way, the positioning performance of the second terminal device can be ensured or improved by determining the position information of the second terminal device by means of the first terminal device. With reference to the first aspect, in certain implementations of the first aspect, the first terminal device may further receive indication information for indicating the first terminal device. Alternatively, the first terminal apparatus may receive the second reference signal from the second terminal apparatus based on the indication information. For example, the indication information itself may indicate the first terminal device, and the terminal device may determine the type of the terminal device based on whether the indication information can be received. If a certain terminal device can receive the instruction information, the terminal device is indicated as a first terminal device. Also exemplary, the information content of the indication information may indicate the first terminal device, and the terminal device may determine the type of the terminal device based on the content of the indication information. If a certain terminal device receives the instruction information and determines that the terminal device is the first terminal device indicated by the instruction information content, the terminal device is indicated as the first terminal device. The location information of the first terminal device is directly available. The position information of the first terminal device can be determined by satellite positioning or other positioning means based on the first reference signal, and is obtained directly without the aid of other termina