The NAS is informed if the cell selection and reselection results in changes in the received NAS system information. The UE shall monitor the Paging Occasions (POs) as described in clause 7.1 to receive System Information change notifications in RRC_IDLE and RRC_INACTIVE. The changes in the system information are notified by the network using a Short Message as specified in TS 38.331. When the Short Message notifies system information changes, then the UE shall acquire or re-acquire the concerned system information as specified in TS 38.331. A L2 U2N Remote UE when in RRC_IDLE or RRC_INACTIVE may not monitor POs as described in clause 7.1 to receive Short Message when connected with a U2N Relay UE, as specified in TS 38.331. A L2 U2N Remote UE in RRC_IDLE or RRC_INACTIVE does not receive Short Message from a L2 U2N Relay UE. When receiving a Short Message, the L2 U2N Relay UE may forward to the L2 U2N Remote UE only Public Warning System information (e.g., SIB6, SIB7, and SIB8). When system information changes, the L2 U2N Remote UE, when in RRC_IDLE or RRC_INACTIVE, relies on the U2N L2 Relay UE to acquire or re-acquire the concerned system information and forward them. Further, the L2 U2N Remote UE, when in RRC_CONNECTED, relies on the network to receive concerned system information that has changed.

A UE receiving or interested to receive MBS broadcast services shall apply the MCCH information acquisition procedure as specified in TS 38.331 to receive the MCCH information. A UE interested to receive MBS broadcast services identifies if a service that it is interested to receive is started or ongoing by receiving the MCCH information, and then receives a MTCH(s) configured using the Broadcast MRB establishment procedure as specified in TS 38.331 and using the DL-SCH reception and MBS broadcast DRX procedure as specified in TS 38.321. A UE which has joined multicast session(s) and configured to receive MBS multicast services in RRC_INACTIVE state shall apply the multicast MCCH information acquisition procedure as specified in TS 38.331 to receive the multicast MCCH information when UE is in RRC_INACTIVE state and the multicast MCCH is configured in the cell. The UE identifies whether a session is active or not by receiving the indication in RRCRelease, multicast MCCH information, or group notification in paging message, and receives the multicast MTCH(s) in RRC_INACTIVE state using the multicast MRB configuration procedure as specified in TS 38.331 and using the DL-SCH reception and MBS multicast DRX procedure as specified in TS 38.321. UEs which have joined a multicast session(s) and are in RRC_IDLE/RRC_INACTIVE state shall apply the reception of the paging message procedure as specified in TS 38.331 when the UE expects MBS group notification as specified in clause 16.10.5.2 in TS 38.300.