US 12,259,489 B2
Method for determining location of V2X device in wireless communication system supporting sidelink, and apparatus therefor
Jaeho Hwang, Seoul (KR); Woosuk Ko, Seoul (KR); and Hanbyul Seo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/790,786
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jan. 25, 2021, PCT No. PCT/KR2021/000958
§ 371(c)(1), (2) Date Jul. 5, 2022,
PCT Pub. No. WO2021/150081, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 10-2020-0009335 (KR), filed on Jan. 23, 2020.
Prior Publication US 2023/0051251 A1, Feb. 16, 2023
Int. Cl. G01S 5/12 (2006.01); H04W 4/40 (2018.01); H04W 64/00 (2009.01)
CPC G01S 5/12 (2013.01) [H04W 4/40 (2018.02); H04W 64/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a first signal from a second device;
receiving a second signal from a third device;
calculating a first time difference of arrival (TDoA) related to the first signal using a first antenna and a second antenna of a first device;
calculating a second TDoA related to the second signal using the first antenna and the second antenna of the first device; and
determining a position of the first device based on the first TDoA and the second TDoA;
wherein the first signal includes first position information of the second device,
wherein the second signal includes second position information of the third device,
wherein the first device calculates a first hyperbola based on the first TDoA and the first position information, and calculates a second hyperbola calculated based on the second TDoA and the second position information,
wherein the position is determined based on an intersection of the first hyperbola shifted by a first offset and the second hyperbola shifted by a second offset, and
wherein the first offset is determined based on the first TDoA and a first distance, and the second offset is determined based on the second TDoA and the first distance.