US 12,225,435 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 Dec. 6, 2023, as Appl. No. 18/530,827.
Application 18/530,827 is a continuation of application No. 17/667,768, filed on Feb. 9, 2022, granted, now 11,843,998.
Claims priority of application No. 10-2021-0018670 (KR), filed on Feb. 9, 2021.
Prior Publication US 2024/0107276 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
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)] 8 Claims
OG exemplary drawing
 
1. A method performed by a first network entity in a wireless communication system, the method comprising:
in case that there is an existing protocol data unit (PDU) session, receiving, from a user equipment (UE) receiving a service announcement, a PDU session modification request message containing a join request for a multicast/broadcast service (MBS) session;
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, receiving, from the UE, a PDU session establishment request message for a PDU session containing the join request;
transmitting, to a second network entity, the join request; and
receiving, from the second network entity, information about the MBS session and the PDU session,
wherein the service announcement includes a public land mobile network (PLMN) identifier (ID), and
wherein the first network entity is an access management function (AMF) and the second network entity is a session management function (SMF).