Patent ID: 7672670

Claim:
A method for providing a Broadcast/Multicast Service (BCMCS) from a base station to a mobile station in a mobile communication system including a BCMCS content server for storing a plurality of BCMCS contents, a BCMCS controller connected to the BCMCS content server, and at least one mobile station located in an area occupied by the base station, the mobile station being connected to the BCMCS controller and a packet data service node (PDSN) via the base station, the method comprising the steps of: receiving a BCMCS registration message from the mobile station; and transmitting a broadcast order message in response to the BCMCS registration message; wherein the BCMCS registration message includes a BCMCS flow identifier (ID) indicating at least one BCMCS content, and the broadcast order message includes BCMCS Unavailable Information indicating that the at least one BCMCS content, requested by the mobile station, corresponding to the BCMCS flow ID is unavailable.