System and method for multicast and broadcast service

Abstract

The present invention relates to a system and method for providing MultiCast and BroadCast Service (MCBCS). According to the present invention, the MCBCS system and method supports session start and data path registration procedures, join and leave procedure for providing the MCBCS with static or dynamic multicast service schemes, and supports procedures for providing to mobile stations operating in idle mode. Accordingly, the present invention enables effectively implementing the MCBCS in a wireless communication system, particularly in WiMAX system, and provides the MCBCS according to the mobile stations operating in idle mode.

1 . A method for providing Multicast and Broadcast Service (MCBCS) in a wireless communication system, comprising:
 performing a session procedure including receiving a session start request message from an MCBCS serve if there is a MBS data to send, transmitting data path request messages to base stations providing the MCBCS to a mobile station and transmitting a session start response message after data path establishment;   receiving, at Access Service Network Gateway (ASN GW), a join initiate message from a mobile station to be provided with an MCBCS based on a service announce information;   transmitting a join request message to a serving ASN GW upon receipt of the join initiate message at an anchor ASN GW;   receiving the join request message and transmitting an access request message to a server; and   requesting, at the base station, to perform a dynamic service addition procedure with the mobile station based on the join request message.