Patent ID: 7171212

Claim:
A method for providing a predetermined MBMS (Multimedia Broadcast/Multicast Service) service to at least two cells among a plurality of cells desiring to receive a predetermined MBMS service among a plurality of MBMS services from an MB-SC (MBMS Source Center) in a system including a radio network controller (RNC) connected to the plurality of the cells, an SGSN (Serving GPRS (General Packet Radio Service) Supporting Node) connected to the RNC, and the MB-SC connected to the SGSN, the method comprising the steps of: transmitting, from the SGSN to the RNC, an MBMS service message including service identification information indicating the predetermined MBMS service; and delivering the predetermined MBMS service message to the plurality of the cells acquired from cell information corresponding to MBMS service identification information received from the SGSN in an RNC service context stored in the RNC, the RNC service context including the MBMS service identification information indicating the MBMS services and the cell information indicating a cell list where cells desiring to receive each of the MBMS services are registered.