US 12,192,886 B2
Communication method and apparatus in wireless communication system supporting D2D communication
Sung-Hoon Kim, Suwon-si (KR); and Young-Kyo Baek, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 3, 2022, as Appl. No. 17/832,043.
Application 17/832,043 is a continuation of application No. 16/680,971, filed on Nov. 12, 2019, granted, now 11,356,933.
Application 16/680,971 is a continuation of application No. 14/858,337, filed on Sep. 18, 2015, granted, now 10,477,460, issued on Nov. 12, 2019.
Claims priority of provisional application 62/052,680, filed on Sep. 19, 2014.
Prior Publication US 2022/0295389 A1, Sep. 15, 2022
Int. Cl. H04W 48/16 (2009.01); H04W 4/70 (2018.01); H04W 4/90 (2018.01); H04W 8/00 (2009.01); H04W 52/02 (2009.01); H04W 76/14 (2018.01); H04W 88/04 (2009.01)
CPC H04W 48/16 (2013.01) [H04W 4/70 (2018.02); H04W 4/90 (2018.02); H04W 8/005 (2013.01); H04W 52/0229 (2013.01); H04W 76/14 (2018.02); H04W 52/0261 (2013.01); H04W 88/04 (2013.01); Y02D 30/70 (2020.08)] 8 Claims
OG exemplary drawing
 
1. A method performed by a relay user equipment (UE) in a wireless communication system supporting device-to-device (D2D) communication between a remote UE and the relay UE connected to a network via a base station, the method comprising:
receiving, from the remote UE, a discovery message including information about the remote UE and information for identifying a relay service to discover the relay UE, the information for identifying the relay service including a relay service code related to the relay service;
transmitting, to the remote UE, a discovery response message including the relay service code;
establishing, by the relay UE, a D2D link with the remote UE, based on the relay service code included in the discovery response message;
identifying whether the remote UE is non-responsive in the D2D link based on a timer; and
initiating, by the relay UE, a procedure to release the D2D link established for the relay service between the relay UE and the remote UE upon an expiry of the timer in case that the remote UE has been non-responsive,
wherein the relay UE is one relay UE among at least one relay UE having received the discovery message.