US 12,446,111 B2
MBS processing method, communication apparatus and storage medium
Xin Zhang, Guangdong (CN); and Jia Sheng, Guangdong (CN)
Assigned to JRD COMMUNICATION (SHENZHEN) LTD., Guangdong (CN)
Appl. No. 18/044,773
Filed by JRD COMMUNICATION (SHENZHEN) LTD., Guangdong (CN)
PCT Filed Oct. 23, 2020, PCT No. PCT/CN2020/123452
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/082802, PCT Pub. Date Apr. 28, 2022.
Prior Publication US 2023/0371124 A1, Nov. 16, 2023
Int. Cl. H04W 76/40 (2018.01); H04W 76/10 (2018.01); H04W 76/20 (2018.01); H04W 76/30 (2018.01)
CPC H04W 76/40 (2018.02) [H04W 76/10 (2018.02); H04W 76/20 (2018.02); H04W 76/30 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A multicast broadcast service (MBS) processing method executable in a user equipment (UE), comprising:
receiving, in a non-connected state, an MBS start notification transmitted from a first base station, wherein the non-connected state comprises an Radio Resource Control_INACTIVE state or an RRC_IDLE state;
establishing a connection with the first base station in response to the MBS start notification so as to transit from the non-connected state to an RRC_CONNECTED state;
receiving, in the RRC_CONNECTED state, a first MBS configuration transmitted from the first base station; and
receiving a plurality of MBS data transmitted from the first base station based on the first MBS configuration;
wherein the MBS processing method comprises:
receiving the MBS start notification only in the non-connected state, which comprises the RRC_INACTIVE state or the RRC_IDLE state, and maintaining context information with the first base station;
wherein the MBS start notification and the first MBS configuration are transmitted only via system information block (SIB) or multicast control channel (MCCH);
wherein, in the RRC_CONNECTED state, the MBS configuration is transmitted only via the RRC message;
wherein, based on the first MBS configuration, the MBS data is received only via the MCCH;
wherein the first MBS configuration is carried only via the RRC connection release message;
wherein, in the non-connected state, the UE receives an MBS modification notification and establishes an RRC connection after receiving the MBS modification notification to update the MBS configuration; and
wherein, in the non-connected state, the UE receives an MBS stop notification.