Patent ID: 8483205

Claim:
A synchronization method of common control messages among network elements, applied to a networking in which multimedia broadcast multicast services are carried out in manner of multimedia broadcast multicast service single frequency network, wherein the networking includes a central network element and at least one distributed network element, the method including: instructing, by the central network element, the distributed network elements to synchronously update common control messages of their respective specific cells, wherein the central network element sends a first control plane message containing an update condition to instruct the distributed network elements to update their respective common control messages; and the distributed network elements update the common control messages according to the first control plane message; wherein the update condition includes at least one of the following: update time, and information on specific target cells in which message update is carried out; wherein the specific target cells refer to all cells or cells specified by the target cell information contained in the update condition; wherein the common control messages include at least one of the following: system messages, multimedia broadcast multicast service point-to-multipoint control channel messages, and multimedia broadcast multicast service notification indicator channel messages; wherein in the case where the common control messages in need of update are multimedia broadcast multicast service point-to-multipoint control channel messages, an update condition includes identifiers of the multimedia broadcast multicast service point-to-multipoint control channels; wherein the target cell information includes an identifier of a synchronization area of the multimedia broadcast multicast service single frequency network; and wherein the update time specifically includes one of the following: system frame number of a radio interface, connection frame number of a radio interface, time, and coordination time of the network elements in the networking; when the common control messages in need of update are multimedia broadcast multicast service point-to-multipoint control channel messages or multimedia broadcast multicast service notification indicator channel messages, the update time further includes information of a specific modification period after reception of the first control plane message, wherein updating is started from the specific modification period.