Abstract: An object of the present invention is to provide a wireless communication system that can quickly accomplish the selection and switching of a base station with which a mobile station is to connect, and that can efficiently distribute base station load resulting from the connection with the mobile station. The mobile station MT comprises: an adaptive array antenna 10 whose directivity can be controlled in any desired direction; a directivity control unit 20 which controls the direction of directivity of the adaptive array antenna 10; a base station identifying unit 21 which gathers identification information from each of the base stations in a surrounding area by changing the direction of directivity of the adaptive array antenna 10 under control of the directivity control unit 20; and a base station selecting unit 22 which selects an appropriate one of the base stations whose identification information has been gathered.