US 12,477,501 B2
Position determination method, apparatus and V2X device
Rui Zhao, Beijing (CN)
Assigned to DATANG GOHIGH INTELLIGENT AND CONNECTED TECHNOLOGY (CHONGQING) CO., LTD., Chongqing (CN)
Appl. No. 18/255,406
Filed by DATANG GOHIGH INTELLIGENT AND CONNECTED TECHNOLOGY (CHONGQING) CO., LTD., Chongqing (CN)
PCT Filed Nov. 8, 2021, PCT No. PCT/CN2021/129333
§ 371(c)(1), (2) Date Jun. 1, 2023,
PCT Pub. No. WO2022/116777, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 202011387718.2 (CN), filed on Dec. 2, 2020.
Prior Publication US 2024/0023050 A1, Jan. 18, 2024
Int. Cl. H04W 64/00 (2009.01); H04L 5/00 (2006.01)
CPC H04W 64/00 (2013.01) [H04L 5/0048 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A position determination method performed by a first device, comprising:
periodically broadcasting a first Positioning Reference Signal (PRS);
receiving a second PRS fed back according to the first PRS by a second device;
transmitting a third PRS to the second device according to the second PRS;
wherein, the second device determines a position based on the first PRS, the second PRS, and the third PRS;
wherein, after transmitting the third PRS to the second device according to the second PRS, the method further comprises:
determining third time information and fourth time information;
transmitting the third time information and the fourth time information to the second device;
wherein, the third time information is third time difference between a time instant of receiving the second PRS and a time instant of transmitting the first PRS; the fourth time information is fourth time difference between a time instant of transmitting the third PRS and a time instant of receiving the second PRS;
wherein, the third time information and the fourth time information are used by the second device to determine the position;
wherein transmitting the third time information and the fourth time information to the second device comprises:
when time instants of periodically transmitting the first PRS are reached, broadcasting the first PRS which simultaneously carries the fourth time information or both the third time information and the fourth time information, and simultaneously carries at least one of the following:
identification information of the second device;
sequence information of the second PRS;
resource assignment information of transmitting the second PRS;
a resource index of transmitting the second PRS.