Patent ID: 8116268

Claim:
A method for controlling data transmission by a Radio Network Controller (RNC) in a communication system, comprising steps of: obtaining transmission delays and time differences between the RNC and each of a plurality of Node Bs managed by the RNC; configuring an offset of a System Frame Number (SFN) for each cell in which each of the plurality of Node Bs is located relative to a Node B Frame Number (BFN) of each of the plurality of Node Bs using one of the plurality of Node Bs as a reference Node B; configuring a common channel for data transmission; transmitting configuration parameters for each cell and configuration parameters of the common channel to a first Node B which is one of the plurality of Node Bs; and informing a User Equipment (UE) of the configuration parameters of the common channel, wherein the configuration parameters for the each cell include the offset for the each cell and a start time indicated by a reference frame, wherein the configuration parameters of the common channel include a frame offset and chip offset which are determined by a CHoff which indicates a frame offset of Channel Frame Number (CFN) in different Multicast Broadcast and Multicast Service (MBMS) transmission channels with respect to the SFN for the each cell, and a Soff which indicates a time offset of the common channel with respect to the SFN for the each cell within one frame.