A method for managing information on user equipments (UEs) in a mobile
communication system supporting an MBMS (Multimedia Broadcast/Multicast
Service) service. A radio network controller (RNC) provides a packet
switched (PS) service and a circuit switched (CS) service to the UEs. A
UE that is in a Packet Mobility Management-Idle (PMM-Idle) mode after
joining at least one MBMS service, transmits MBMS service-related
information thereof to the RNC, and the RNC stores the MBMS
service-related information in a first service context for the MBMS
service held in the RNC, together with information on the UE.