Patent ID: 7536176

Claim:
A method for controlling a Mobile Station (MS) to receive BCMCS (Broadcast/Multicast Service) data in a mobile communication system including at least one BCMCS controllers and the MS for receiving the BCMCS data through a BSs (Base stations), comprising the steps of: receiving, from a new BS, a new BCMCS zone ID that is different from a prestored old BCMCS zone ID, while receiving the BCMCS data from an old BS; requesting the BCMCS data to the new BS; establishing a channel with the new BS; receiving a BCMCS information from the new BS; transmitting a registration message to the new BS to provide the BCMCS data by using a new BCMCS controller; and receiving the BCMCS data from the new BS using the BCMCS information; wherein the BCMCS zone ID is received with an indicator indicating whether the BCMCS is supported in the new BS.