US 12,490,059 B2
Mobility support method and device for multicast service in next generation mobile communication system
Donggun Kim, Suwon-si (KR); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 18/010,639
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Jun. 18, 2021, PCT No. PCT/KR2021/007689
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2021/256898, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 10-2020-0074842 (KR), filed on Jun. 19, 2020.
Prior Publication US 2023/0232189 A1, Jul. 20, 2023
Int. Cl. H04W 4/06 (2009.01); H04W 76/40 (2018.01)
CPC H04W 4/06 (2013.01) [H04W 76/40 (2018.02)] 8 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) for a multicast broadcast service (MBS) in a wireless communication system, the method comprising:
receiving a radio resource control (RRC) message including configuration information for the MBS and information on a data inactivity timer, wherein the configuration information for the MBS includes configuration information on a bearer for the MBS:
identifying whether a medium access control (MAC) service data unit (SDU) for an MBS traffic channel (MTCH) is received when the data inactivity timer is configured; and
starting the data inactivity timer based on the reception of the MAC SDU for the MTCH,
wherein the configuration information on the bearer for the MBS includes information associated with a service data adaptation protocol (SDAP).