US 12,085,660 B2
Sidelink TDOA-based positioning
Woosuk Ko, Seoul (KR); Hanbyul Seo, Seoul (KR); and Seungmin Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/596,895
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jun. 15, 2020, PCT No. PCT/KR2020/007698
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2020/256365, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 10-2019-0073831 (KR), filed on Jun. 21, 2019.
Prior Publication US 2022/0326335 A1, Oct. 13, 2022
Int. Cl. G01S 5/00 (2006.01); H04L 5/00 (2006.01); H04W 56/00 (2009.01); H04W 64/00 (2009.01); H04W 92/18 (2009.01)
CPC G01S 5/0072 (2013.01) [H04L 5/0051 (2013.01); H04W 56/001 (2013.01); H04W 64/00 (2013.01); H04W 92/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for performing wireless communication by a first device, the method comprising:
transmitting, to a plurality of servers, positioning reference signals (PRSs);
receiving, from an anchor server among the plurality of servers, information on reference signal time difference (RSTD) values for differences between times when the plurality of servers received the PRSs and information on an absolute position of each of the plurality of servers; and
determining a location of the first device based on the information on the RSTD values and the information on the absolute position of each of the plurality of servers,
wherein the information on the RSTD values received from the anchor server and the information on the absolute position of each of the plurality of servers received from the anchor server have a higher priority than data transmitted from remaining group members except for the anchor server in a positioning group.