KR-20260064741-A - Method and communication device for sidelink communication

Abstract

A method and a communication device for sidelink communication are provided, wherein the method comprises the steps of: a first device receiving first information used to indicate synchronization information of a first terminal device and/or synchronization information of a second terminal device; and the first device performing a position determination for a third terminal device according to the first information.

Inventors

• 자오, 정

Assignees

• 켁텔 와이어리스 솔루션즈 코퍼레이션 리미티드

Dates

Publication Date

20260507

Application Date

20230929

Claims (20)

1. As a method for sidelink communication, A step in which a first device receives first information used to indicate synchronization information of a first terminal device and/or synchronization information of a second terminal device; and A method characterized by including the step of the first device performing a position determination for a third terminal device according to the first information.
2. In paragraph 1, The above first information is, Information associated with the synchronization source of the first terminal device and/or the second terminal device; Time difference information associated with the first terminal device and/or the second terminal device; and A method characterized by including one or more round-trip delays between the first terminal device and the second terminal device.
3. In paragraph 2, The information associated with the above synchronization source is, Type of synchronization source; Coverage range of the synchronization source; Synchronization connection status of the synchronization source; Cell identifier information corresponding to the synchronization source; and A method characterized by including one or more of the synchronization precision information of a synchronization source.
4. In paragraph 3, The above synchronization precision information includes the accuracy unit of the synchronization estimate, and the above synchronization estimate accuracy unit is, Integer multiple of the sampling interval; nanoseconds (ns); microseconds (us); and A method characterized by including one or more of milliseconds (ms).
5. In paragraph 3 or 4, The step of the first device performing a location determination for the third terminal device according to the first information is If the above synchronization precision does not satisfy the preset requirement, the first device includes the step of performing operations to perform a position determination for the third terminal device, and the operations are, The first device divides the first synchronization quantization interval into M equal parts to obtain M second synchronization quantization intervals, wherein the first synchronization quantization interval corresponds to the synchronization precision; Determining an assumed synchronization value on each second synchronization quantization interval; By performing a position determination calculation based on the above assumed synchronization value, the estimated position coordinates , obtaining (j=1,2,... ..., M); Estimated error according to the formula below Calculating; ; and Estimation error The position coordinates corresponding to the minimum value of are taken as the position determination result, and the value of j When, the estimated error Includes the smallest value of; In the above formula, N is the number of terminal devices that transmit a pilot signal to the third terminal device or measure the pilot signal transmitted by the third terminal device, and represents the location coordinates of the i-th terminal device that transmits a pilot signal to the third terminal device or measures the pilot signal transmitted by the third terminal device, and A method characterized in that the distance between the location of the third terminal device and the i-th terminal device that transmits a pilot signal to the third terminal device or measures the pilot signal transmitted by the third terminal device is a pilot signal used for position determination.
6. In any one of paragraphs 2 through 5, The above time difference information is, Synchronization time difference between the first terminal device and the second terminal device; The time difference between the timing of the first terminal device and the timing of the first synchronization source; and It includes one or more of the time differences between the timing of the second terminal device and the timing of the second synchronization source; A method characterized in that the first terminal device is synchronized with the first synchronization source, and the second terminal device is synchronized with the second synchronization source.
7. In paragraph 6, A method characterized in that the first synchronization source and the second synchronization source are identical.
8. In paragraph 6 or 7, A method characterized in that the first information further includes the timing of the first synchronization source and/or the timing of the second synchronization source.
9. In any one of paragraphs 1 through 8, The above first information is, The above first terminal device; The above second terminal device; First synchronization source; Second synchronization source; A network device corresponding to the first synchronization source above; and Reported to the first device by one or more network devices corresponding to the second synchronization source; A method characterized in that the first terminal device is synchronized with the first synchronization source, and the second terminal device is synchronized with the second synchronization source.
10. In Paragraph 9, The first information is actively reported to the first device by the first synchronization source and/or the second synchronization source; and/or A method characterized in that the first information is actively reported to the first device via the first terminal device and/or the second terminal device by the first synchronization source and/or the second synchronization source.
11. In Paragraph 9, Before the step in which the first device receives the first information, the method is, A method further comprising the step of the first device transmitting second information, wherein the second information is used to request target synchronization information, and the target synchronization information includes synchronization information of the first terminal device and/or synchronization information of the second terminal device.
12. In Paragraph 11, The above second information is, The above target synchronization information; A device identifier of a device associated with the above target synchronization information; and A method characterized by including one or more of the expected synchronization precision information corresponding to the above target synchronization information.
13. In any one of paragraphs 1 through 12, The first terminal device and the second terminal device are both reference terminal devices participating in sidelink position determination; A method characterized in that the third terminal device is a target terminal device participating in side link position determination.
14. In any one of paragraphs 1 through 13, A method characterized in that the first device is a position determination server.
15. As a method for sidelink communication, A method comprising the step of a first terminal device transmitting first information to a first device, wherein the first information is used to indicate synchronization information of the first terminal device and/or synchronization information of a second terminal device, and wherein the first information is used for the first device to perform a position determination with respect to a third terminal device.
16. In paragraph 15, The above method is, A method further comprising the step of the first terminal device transmitting a pilot signal to a third terminal device and/or the first terminal device receiving the pilot signal transmitted by the third terminal device, wherein the pilot signal is a signal used for determining a side link location.
17. In paragraph 15 or 16, The above first information is, Information associated with the synchronization source of the first terminal device and/or the second terminal device; Time difference information associated with the first terminal device and/or the second terminal device; and A method characterized by including one or more round-trip delays between the first terminal device and the second terminal device.
18. In Paragraph 17, The information associated with the above synchronization source is, Type of synchronization source; Coverage range of the synchronization source; Synchronization connection status of the synchronization source; Cell identifier information corresponding to the synchronization source; and A method characterized by including one or more of the synchronization precision information of a synchronization source.
19. In Paragraph 18, The above synchronization precision information includes the accuracy unit of the synchronization estimate, and the above synchronization estimate accuracy unit is, Integer multiple of the sampling interval; nanoseconds (ns); microseconds (us); and A method characterized by including one or more of milliseconds (ms).
20. In any one of paragraphs 17 through 19, The above time difference information is, Synchronization time difference between the first terminal device and the second terminal device; The time difference between the timing of the first terminal device and the timing of the first synchronization source; and It includes one or more of the time differences between the timing of the second terminal device and the timing of the second synchronization source; A method characterized in that the first terminal device is synchronized to the first synchronization source, and the second terminal device is synchronized to the second synchronization source.

Description

Method and communication device for sidelink communication The present application relates to the field of communication technology, and more specifically, to a method and a communication device for sidelink communication. In a sidelink communication system, terminal devices can perform synchronization based on different synchronization sources. If two terminal devices do not synchronize through each other, a synchronization timing difference may occur between them, and this timing difference can lead to many problems. The present application provides a method and a communication device for sidelink communication. Below, each aspect relating to an embodiment of the present application is described in detail. In a first embodiment, a method for sidelink communication is provided, comprising: a step in which a first device receives first information used to indicate synchronization information of a first terminal device and/or synchronization information of a second terminal device; and a step in which the first device performs a position determination for a third terminal device according to the first information. In a second embodiment, a method for sidelink communication is provided, comprising the step of a first terminal device transmitting first information to a first device, wherein the first information is used to indicate synchronization information of the first terminal device and/or synchronization information of a second terminal device, and the first information is used for the first device to perform a location determination with respect to a third terminal device. In a third embodiment, a method for sidelink communication is provided, comprising the step of a second terminal device transmitting first information to a first device, wherein the first information is used to indicate synchronization information of the first terminal device and/or synchronization information of the second terminal device, and the first information is used for the first device to perform a location determination with respect to the third terminal device. In a fourth embodiment, a communication device is provided, wherein the communication device is a first device, and the device comprises: a receiving unit that receives first information used to indicate synchronization information of a first terminal device and/or synchronization information of a second terminal device; and a positioning unit that performs a positioning determination for a third terminal device according to the first information. In a fifth embodiment, a communication device is provided, wherein the communication device is a first terminal device, and the device includes a first transmitting unit that transmits first information to the first device, wherein the first information is used to indicate synchronization information of the first terminal device and/or synchronization information of a second terminal device, and wherein the first information is used for the first device to perform a position determination with respect to the third terminal device. In a sixth embodiment, a communication device is provided, wherein the communication device is a second terminal device, and the device includes a transmitting unit that transmits first information to a first device, wherein the first information is used to indicate synchronization information of the first terminal device and/or synchronization information of the second terminal device, and wherein the first information is used for the first device to perform a position determination with respect to the third terminal device. In a seventh embodiment, a communication device is provided, comprising a transceiver, a memory, and a processor, wherein the memory is used to store a program, and the processor is used to call a program in the memory and to control the transceiver to receive or transmit a signal, thereby enabling the communication device to perform a method according to any one of the first to third embodiments. In an eighth embodiment, a device is provided, which includes a processor used to call a program from memory to enable the device to perform a method according to any one of the first to third embodiments. In a ninth embodiment, a chip is provided, which includes a processor used to call a program from memory so that a device equipped with the chip performs a method according to any one of the first to third embodiments. In the tenth embodiment, a computer-readable storage medium is provided that stores a program that enables a computer to perform a method according to any one of the first to third embodiments. In the eleventh embodiment, a computer program product is provided that includes a program that enables a computer to perform a method according to any one of the first to third embodiments. In the 12th embodiment, a computer program is provided that enables the computer to perform a method according to any one of the first to third embodiments. In an embodiment of the presen