US 11,856,541 B2
Method for transmitting synchronization reference signal for device-to-device (D2D) communication in wireless communication system and apparatus therefor
Seungmin Lee, Seoul (KR); Hanbyul Seo, Seoul (KR); and Jihyun Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Dec. 29, 2022, as Appl. No. 18/090,887.
Application 18/090,887 is a continuation of application No. 17/109,920, filed on Dec. 2, 2020, granted, now 11,546,865.
Application 17/109,920 is a continuation of application No. 16/248,362, filed on Jan. 15, 2019, granted, now 10,863,462, issued on Dec. 8, 2020.
Application 16/248,362 is a continuation of application No. 15/021,244, granted, now 10,212,676, issued on Feb. 19, 2019, previously published as PCT/KR2014/009099, filed on Sep. 29, 2014.
Claims priority of provisional application 62/032,629, filed on Aug. 3, 2014.
Claims priority of provisional application 61/977,646, filed on Apr. 10, 2014.
Claims priority of provisional application 61/936,891, filed on Feb. 7, 2014.
Claims priority of provisional application 61/932,758, filed on Jan. 28, 2014.
Claims priority of provisional application 61/929,495, filed on Jan. 20, 2014.
Claims priority of provisional application 61/900,967, filed on Nov. 6, 2013.
Claims priority of provisional application 61/896,642, filed on Oct. 28, 2013.
Claims priority of provisional application 61/883,256, filed on Sep. 27, 2013.
Prior Publication US 2023/0145590 A1, May 11, 2023
Int. Cl. H04W 56/00 (2009.01); H04L 5/00 (2006.01); H04W 72/04 (2023.01)
CPC H04W 56/001 (2013.01) [H04L 5/0048 (2013.01); H04W 56/00 (2013.01); H04W 72/04 (2013.01); H04W 56/0015 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of transmitting a signal by a user equipment (UE) for wireless communication, the method comprising:
performing a search to detect synchronization signal (SS) candidates;
selecting, by the UE based on each received signal power measurement for each SS candidate, a synchronization reference among one or more SS candidates for which a result of the measurement exceeds a threshold configured in the UE; and
transmitting, by the UE, a signal including a SS with a same identifier (ID) as an ID of the selected synchronization reference,
wherein the selected synchronization reference is a synchronization reference UE,
wherein the UE determines, based on time resource information including time offset information, a time resource in which the UE transmits the SS, and
wherein the time resource is different from an SS transmission timing of the synchronization reference UE.