A mobile communication system comprising a mobile station, base stations, each of which being configured to form a cell and to transmit MBMS data to a mobile station existing in the cell, and control stations, each of which being configured to control a base station connected thereto, wherein the control stations include: at least a first control station; and a second control station configured to determine an indicator which indicates a combination of a value for a radio resource and a value for transmission timing of the MBMS data and to instruct the first control station of the indicator, and each of the first and second control stations (400-2, 400-1) being configured to store a database in which the indicator is associated with the combination of the value for a radio resource and the value for transmission timing of the MBMS data in advance, to select the combination of the value for a radio resource and the value for transmission timing of the MBMS data which is associated with the indicator determined by the second control station, with reference to the database, to establish time synchronization with another control station, to instruct the base station connected thereto to set the cell to the value for a radio resource determined by the second control station, and to transmit the MBMS data to the connected base station in accordance with the value for transmission timing determined by the second control station, and the mobile station is configured to receive the MBMS data, characterized in that the second control station is configured to inform the first control station of candidates to be used for the indicator, and the first control station is configured to inform the second control station of an available indicator from among the candidates to be used for the indicator, and the second control station is configured to determine the indicator to instruct the first control station based on the available indicator in the second control station and the first control station. at least a first control station; and a second control station configured to determine an indicator which indicates a combination of a value for a radio resource and a value for transmission timing of the MBMS data and to instruct the first control station of the indicator, and each of the first and second control stations (400-2, 400-1) being configured to store a database in which the indicator is associated with the combination of the value for a radio resource and the value for transmission timing of the MBMS data in advance, to select the combination of the value for a radio resource and the value for transmission timing of the MBMS data which is associated with the indicator determined by the second control station, with reference to the database, to establish time synchronization with another control station, to instruct the base station connected thereto to set the cell to the value for a radio resource determined by the second control station, and to transmit the MBMS data to the connected base station in accordance with the value for transmission timing determined by the second control station, and the mobile station is configured to receive the MBMS data, characterized in that the second control station is configured to inform the first control station of candidates to be used for the indicator, and the first control station is configured to inform the second control station of an available indicator from among the candidates to be used for the indicator, and the second control station is configured to determine the indicator to instruct the first control station based on the available indicator in the second control station and the first control station.