COMMUNICATION RANGE CONTROL DEVICE, METHOD, AND PROGRAM

When data transmitted from devices is processed by servers in a shared manner, the data is processed in a constantly stable manner when the devices move. Based on information indicating installation positions and processing capabilities of the servers SV1 and SV2, information on installation positions of base stations BS1 to BS5, and acquired location information of the devices, the coverage area control apparatus CS performs, at a certain time interval, a clustering calculation for obtaining an optimum coverage area for the servers SV1 and SV2 that satisfies the requirements that the communication distances between the servers SV1 and SV2 and the respective devices be minimized and the servers SV1 and SV2 not be overloaded. Based on the information indicating the optimum coverage area obtained by the clustering calculation, assignments of the base stations BS1 to BS5 to the servers SV1 and SV2 are updated.