Patent ID: 7283815

Claim:
A method for providing MBMS (Multimedia Broadcast/Multicast Service) data in an asynchronous mobile communication system, the method comprising the steps of: measuring, by a radio network controller (RNC), a round trip delay (RTD) of a primary cell in which user equipment (UE) is located and each RTD of at least one neighbor cell; transmitting the MBMS data to the primary cell and each neighbor cell by considering the each measured RTD of the primary cell and the neighbor cells; receiving, by the UE, the MBMS data from the primary cell and each neighbor cell at the same time, and performing soft combining on the received MBMS data; wherein the measuring, by the RNC, of the RTDs of the primary cell and each neighbor cell comprises transmitting a predetermined test frame and receiving response signals for the test frame; and copying the MBMS data according to the number of the primary cell and the neighbor cells and transmitting, by the RNC, the copied MBMS data to the primary cell and each neighbor cell.