Patent ID: 8873450

Claim:
A synchronization processing method for multimedia broadcast multicast service, comprising: an upper layer network element sending a synchronization sequence including a plurality of synchronization protocol data frames to a plurality of lower layer network elements, wherein the upper layer network element is a Broadcast Multicast Service Center (BMSC), and each of the lower layer network elements is a base station or a radio network controller; the upper layer network element sending a synchronization protocol control frame to each of the lower layer network elements, wherein said synchronization protocol control frame carries the number of the synchronization protocol data frames included in the synchronization sequence and data packet length information of each of the synchronization protocol data frames; and when at least two consecutive frames of the plurality of synchronization protocol data frames are lost, obtaining by the lower layer network element the length of each of the at least two consecutively synchronization protocol data frames that are lost to keep synchronization with other lower layer network elements receiving data packets successfully.