US 12,382,254 B2
Method and apparatus for sharing reason cause for MCX communication over pre-established session
Vengataraaman Ramamoorthy, Bangalore (IN); Kiran Gurudev Kapale, Bangalore (IN); Siva Prasad Gundur, Bangalore (IN); and Vijay Sangameshwara, Bangalore (IN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 8, 2022, as Appl. No. 17/883,060.
Application 17/883,060 is a continuation of application No. PCT/KR2021/006370, filed on May 21, 2021.
Claims priority of application No. 202041021661 (IN), filed on May 22, 2020; and application No. 2020 41021661 (IN), filed on Apr. 28, 2021.
Prior Publication US 2022/0408230 A1, Dec. 22, 2022
Int. Cl. H04W 4/10 (2009.01); H04L 67/14 (2022.01); H04W 4/90 (2018.01); H04W 76/45 (2018.01); H04W 76/50 (2018.01)
CPC H04W 4/10 (2013.01) [H04L 67/14 (2013.01); H04W 4/90 (2018.02); H04W 76/45 (2018.02); H04W 76/50 (2018.02)] 13 Claims
OG exemplary drawing
 
1. A method performed by a first user equipment (UE) in a wireless communication system, the method comprising:
transmitting, to a server, an initiation request to initiate a mission critical push-to-talk (MCPTT) call over a pre-established session;
receiving, from the server, a mission critical pre-established session control (MCPC) connect message including a MIKEY-SAKKE I_MESSAGE; and
transmitting, to the server, an MCPC acknowledgement message including a reason code field containing a reason for rejecting the MCPTT call in response to determining that the first UE does not accept the MCPTT call based on the received MCPC connect message,
wherein the reason code field includes a reason code field identity, a reason code length, and a reason code value, and
wherein the reason code value is one of a plurality of predetermined values, and the plurality of predetermined values comprise at least one of:
a first value indicating “authentication of the MIKEY-SAKKE I MESSAGE failed,”
a second value indicating “integrity protection check failed,” or
a third value indicating “unable to decrypt XML content”.