Method for synchronizing of broadcast service stream in a mobile communication system

The present invention is an invention to provide a method for synchronizing the broadcast service stream in a mobile communication system. When such the present invention provides a method of transmitting a broadcast content frame in a mobile communication system is connected to the broadcast server providing the broadcast service, the packet data service node receiving the broadcast content, the frame provided by the broadcast server, and a sequence number and GRE (Generic Routing Encapsulation) packet broadcast contents frame the process to transfer to the lower and, each node connected to a subset of the PDSN are the received GRE packet broadcast contents frame including a time stamp value indicating a transmission time the validated by using the sequence number included in, and transmitting if the validity of the GRE packet broadcast contents frame using the time stamp value to match the transmission synchronization of the GRE packet broadcast contents frame to the lower of the respective node it involves. BCMCS (Broadcast Multicast Service), a packet data service node, a packet control function, a content server, GRE (Generic Routing Encapsulation)