MBS data processing method and device

1 . A method for processing multicast and broadcast services (MBS) data by a user equipment (UE), the method comprising:

switching a radio resource control (RRC) state to an RRC inactive state;

receiving a paging message transmitted from a base station according to MBS session activation or MBS data reception of the base station; and

initiating an RRC connection resume procedure for an RRC state change based on the paging message,

wherein initiating the RRC connection resume procedure is triggering the RRC connection resume procedure based on identifying that the MBS session included in the paging message is a session that the UE has joined.

2 . The method of claim 1 ,

wherein the paging message includes one or more pieces of MBS session identification information, and

wherein the MBS session identification information includes at least one of temporary mobile group identity (TMGI), MBS session identifier (ID), and internet protocol (IP) multicast address information.

3 . The method of claim 1 , wherein the switching further includes suspending an MBS radio bearer for the MBS session.

4 . A method for controlling, by a base station, multicast and broadcast services (MBS) data processing of a user equipment (UE), the method comprising:

transmitting, to the UE, a radio resource control (RRC) connection release message including information for indicating whether to activate an MBS session;

transmitting a paging message to the UE according to MBS session activation or MBS data reception in a state in which the UE switches to an RRC inactive state; and

receiving an RRC connection request message from the UE when the UE initiates an RRC connection resume procedure based on the paging message,

wherein the UE initiates the RRC connection resume procedure based on identifying that the MBS session included in the paging message is a session that the UE has joined.

5 . The method of claim 4 ,

wherein the paging message includes one or more pieces of MBS session identification information, and

wherein the MBS session identification information includes at least one of temporary mobile group identity (TMGI), MBS session identifier (ID), and internal protocol (IP) multicast address information.

6 . The method of claim 4 , wherein the UE suspends an MBS radio bearer for the MBS session to switch to the RRC inactive state.

7 . A user equipment (UE) for processing multicast and broadcast services (MBS) data, comprising:

a controller configured to control switching a radio resource control (RRC) state to an RRC inactive state; and

a receiver configured to receive a paging message transmitted from a base station according to MBS session activation or MBBS data reception of the base station, wherein the controller initiates an RRC connection resume procedure for an RRC state change based on the paging message,

wherein the controller controls to trigger initiation of the RRC connection resume procedure based on identifying that the MBS session included in the paging message is a session that the UE has joined.

8 . The UE of claim 7 , wherein the paging message includes one or more pieces of MBS session identification information, and wherein the MBS session identification information includes at least one of temporary mobile group identity (TMGI), MBS session identifier (ID), and internet protocol (IP) multicast address information.

9 . The UE of claim 7 , wherein the controller controls to suspend an MBS radio bearer for the MBS session and switch to the RRC inactive state.