<p>It is possible to solve the problems of the conventional multi-cast communication system, improve the reception quality at a mobile station, and effectively use the radio resource. There is provided a mobile communication system for transmitting the same information to a plurality of cells via one or more base stations and subjecting the same information received by a mobile station, to maximum ratio synthesis or selection synthesis. The mobile communication system includes a control unit for setting a cycle of performing a transmission timing synchronization process or accuracy of the transmission timing synchronization process for each of the control devices for performing the transmission timing synchronization process of the same information between the plurality of cells.</p>
