US 11,751,021 B2
Method and apparatus for performing direct communication with at least one other user equipment
Yun-Sun Baek, Gyeonggi-do (KR); Hyeon-Mok Ko, Gyeonggi-do (KR); and Sung-Jin Park, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Feb. 9, 2022, as Appl. No. 17/668,043.
Application 17/668,043 is a continuation of application No. 16/895,699, filed on Jun. 8, 2020, granted, now 11,259,150.
Application 16/895,699 is a continuation of application No. 15/752,113, granted, now 10,681,505, issued on Jun. 9, 2020, previously published as PCT/KR2016/008946, filed on Aug. 12, 2016.
Claims priority of provisional application 62/279,339, filed on Jan. 15, 2016.
Claims priority of provisional application 62/275,541, filed on Jan. 6, 2016.
Claims priority of provisional application 62/258,809, filed on Nov. 23, 2015.
Claims priority of provisional application 62/241,856, filed on Oct. 15, 2015.
Claims priority of provisional application 62/238,333, filed on Oct. 7, 2015.
Claims priority of provisional application 62/235,873, filed on Oct. 1, 2015.
Claims priority of provisional application 62/204,171, filed on Aug. 12, 2015.
Prior Publication US 2022/0167126 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/10 (2009.01); H04L 12/18 (2006.01); H04W 12/08 (2021.01); H04W 76/18 (2018.01); H04W 76/14 (2018.01); H04L 9/40 (2022.01); H04W 72/30 (2023.01); H04L 65/403 (2022.01)
CPC H04W 4/10 (2013.01) [H04L 9/40 (2022.05); H04L 12/18 (2013.01); H04L 12/1822 (2013.01); H04L 65/4046 (2013.01); H04W 12/08 (2013.01); H04W 72/30 (2023.01); H04W 76/14 (2018.02); H04W 76/18 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE), the method comprising:
transmitting, to at least one other UE included in a group call with the UE, a first message requesting permission for transmission;
starting a timer upon transmitting the first message;
restarting the timer in response to the timer expiring before receiving a second message in response to the first message;
stopping the timer in response to receiving the second message before the timer expires;
retransmitting the first message each time the timer expires before receiving the second message until a total number of transmissions of the first message reaches a predetermined number of times;
transmitting, to the at least one other UE, a third message indicating that the permission for transmission is granted to the UE after the first message is transmitted the predetermined number of times and the timer expires before receiving the second message; and
transmitting media data to the at least one other UE after transmitting the third message.