US 12,284,573 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, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Sep. 5, 2023, as Appl. No. 18/461,048.
Application 18/461,048 is a continuation of application No. 17/668,043, filed on Feb. 9, 2022, granted, now 11,751,021.
Application 17/668,043 is a continuation of application No. 16/895,699, filed on Jun. 8, 2020, granted, now 11,259,150, issued on Feb. 22, 2022.
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 2023/0422001 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/10 (2009.01); H04L 9/40 (2022.01); H04L 12/18 (2006.01); H04L 65/403 (2022.01); H04W 12/08 (2021.01); H04W 72/30 (2023.01); H04W 76/14 (2018.01); H04W 76/18 (2018.01)
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 mission critical push to talk (MCPTT) client device, the method comprising:
transmitting, to at least one client device, a floor request message requesting permission to send media for an off-network group call;
starting a timer upon transmitting the floor request message;
restarting the timer in response to the timer expiring before receiving a response message responding to the floor request message;
stopping the timer in response to receiving a response message responding to the floor request message before the timer expires;
retransmitting the floor request message each time the timer expires before receiving a response message responding to the floor request message until a total number of transmissions of the floor request message reaches a predetermined number of times;
transmitting, to the at least one client device, a floor taken message indicating that the permission to send is granted to the MCPTT client device based on the total number of transmissions of the floor request message reaching the predetermined number of times; and
transmitting first media data to the at least one client device after transmitting the floor taken message.