US 11,902,928 B2
Method for locating terminal in wireless communication system and device therefor
Youngsub Kim, Seoul (KR); Kijun Kim, Seoul (KR); Hyunsu Cha, Seoul (KR); Hyunsoo Ko, Seoul (KR); and Sukhyon Yoon, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/274,747
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 16, 2019, PCT No. PCT/KR2019/011919
§ 371(c)(1), (2) Date Mar. 9, 2021,
PCT Pub. No. WO2020/060199, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 10-2018-0114204 (KR), filed on Sep. 21, 2018; and application No. 10-2019-0012522 (KR), filed on Jan. 31, 2019.
Prior Publication US 2022/0053443 A1, Feb. 17, 2022
Int. Cl. H04W 24/10 (2009.01); H04W 56/00 (2009.01); H04L 5/00 (2006.01); H04W 64/00 (2009.01); G01S 5/02 (2010.01); H04W 76/10 (2018.01)
CPC H04W 56/0055 (2013.01) [G01S 5/0244 (2020.05); H04L 5/0051 (2013.01); H04W 24/10 (2013.01); H04W 64/00 (2013.01); H04W 76/10 (2018.02)] 14 Claims
OG exemplary drawing
 
1. A method of reporting a Reference Signal Timing Difference (RSTD) value by a user equipment (UE) in a wireless communication system, the method comprising:
transmitting a random access preamble related to a Synchronization Signal/Physical Broadcast Channel Block (SS/PBCH) block received from a specific cell included in a plurality of cells;
establishing an RRC connection to the specific cell by requesting a Radio Resource Control (RRC) connection based on a Random Access Response (RAR) received from the specific cell;
receiving, from a location server, a cell group identifier for a cell group including the plurality of the cells and cell-independent information for each of the plurality of cells;
generating a first Positioning Reference Signal (PRS) sequence based on the cell group identifier;
detecting second PRS sequences transmitted from the plurality of cells,
wherein the first PRS sequence and the second PRS sequences are based on a same sequence with different cyclic shift values; and
reporting, to the location server, Reference Signal Timing Difference (RSTD) information based on the first PRS sequence, the second PRS sequences and the cell-independent information.