US 11,843,998 B2
Method and apparatus for supporting multicast service in a wireless communication
Youngkyo Baek, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Feb. 9, 2022, as Appl. No. 17/667,768.
Claims priority of application No. 10-2021-0018670 (KR), filed on Feb. 9, 2021.
Prior Publication US 2022/0272498 A1, Aug. 25, 2022
Int. Cl. H04H 20/71 (2008.01); H04W 4/08 (2009.01); H04W 76/40 (2018.01)
CPC H04W 4/08 (2013.01) [H04W 76/40 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a service announcement including a public land mobile network (PLMN) identifier (ID);
in case that there is an existing protocol data unit (PDU) session, transmitting, to a network entity, a PDU session modification request message containing a join request for a multicast/broadcast service (MBS) session; and
in case that there is no PDU session established with a data network name (DNN) and a single-network slice selection assistance information (S-NSSAI) for the MBS session, transmitting, to a network entity, a PDU session establishment request message for a PDU session containing the join request.