Patent ID: 8588133

Claim:
A mobile communication system comprising: a plurality of base stations including a first base station covering a first range and a second base station covering a second range larger than the first range; and a transmitting node that is connected to the base stations via a network and changes its own operation to the base station according to a type of the base station; each of the base stations including: a receiving unit that receives a predetermined signal transmitted from the transmitting node, and the transmitting node including: a type determining unit that determines whether the base station is the first base station or the second base station, a transmission period setting unit that sets a transmission period of the predetermined signal for the base station determined to be the first base station, to be longer than a transmission period of the predetermined signal for the base station determined to be the second base station, the transmission period setting unit sets a different transmission period for each of more than one second base station irrespective of a number of mobile terminals in the range of the second base station, and a transmitting unit that transmits the predetermined signal to the base stations, based on a transmission period set for each of the base stations by the transmission period setting unit.