Patent ID: 8005037

Claim:
A communication control method for a mobile communication system, which comprises a plurality of mobile stations, a radio base station capable of communicating with the plurality of mobile stations, and a radio control station, which is able to communicate with the radio base station and which controls communications between the radio base station and the plurality of mobile stations, the communication control method comprising: a measurement step of measuring a plurality of congestion parameters related to factors generating congestion in the mobile communication system; an evaluation step of evaluating, by the radio control station, congestion degrees corresponding to each of the plurality of congestion parameters measured in the measurement step, each congestion parameters set to one of at least three congestion degrees; and a control step of performing a prescribed operation with respect to a communication setting between the radio base station and at least one of the plurality of mobile stations in accordance with a control instruction transmitted from the radio control station to the radio base station when at least one of the plurality of congestion degrees acquired by the evaluation step is a prescribed level or more, and not performing the prescribed operation with respect to the communication setting when all of the plurality of congestion degrees are less than the prescribed level.