A wireless communication system that includes a plurality of base stations (20-1, 20-2) that are adapted to switch to either a first communication method or a second communication method and to carry out wireless communication with terminals (10A, 10B) by the switched communication method, and a control apparatus adapted to manage said plurality of base stations; wherein: each of said plurality of base stations includes: a first communication unit adapted to carry out wireless communication by said first communication method; a second communication unit adapted to carry out wireless communication by said second communication method; a switch unit adapted to switch the communication unit used in wireless communication to either said first communication unit or said second communication unit according to instruction from said control apparatus, and a throughput measurement unit adapted to measure throughput of its own station and transmit information of throughput that was measured to said control apparatus; and said control apparatus includes: an acquisition unit adapted to acquire information of throughput from each of said plurality of base stations; and a switching instruction unit adapted to, when there is among said plurality of base stations a base station in which throughput drops within a fixed interval, instruct switching of a current communication method among the first and second communication method to each of said plurality of base stations, and further, to instruct re-switching to the communication method that preceded switching to, among said plurality of base stations, base stations in which throughput dropped from before to after switching of the communication method. each of said plurality of base stations includes: a first communication unit adapted to carry out wireless communication by said first communication method; a second communication unit adapted to carry out wireless communication by said second communication method; a first communication unit adapted to carry out wireless communication by said first communication method; a second communication unit adapted to carry out wireless communication by said second communication method; a switch unit adapted to switch the communication unit used in wireless communication to either said first communication unit or said second communication unit according to instruction from said control apparatus, and a throughput measurement unit adapted to measure throughput of its own station and transmit information of throughput that was measured to said control apparatus; and said control apparatus includes: an acquisition unit adapted to acquire information of throughput from each of said plurality of base stations; and a switching instruction unit adapted to, when there is among said plurality of base stations a base station in which throughput drops within a fixed interval, instruct switching of a current communication method among the first and second communication method to each of said plurality of base stations, and further, to instruct re-switching to the communication method that preceded switching to, among said plurality of base stations, base stations in which throughput dropped from before to after switching of the communication method. an acquisition unit adapted to acquire information of throughput from each of said plurality of base stations; and a switching instruction unit adapted to, when there is among said plurality of base stations a base station in which throughput drops within a fixed interval, instruct switching of a current communication method among the first and second communication method to each of said plurality of base stations, and further, to instruct re-switching to the communication method that preceded switching to, among said plurality of base stations, base stations in which throughput dropped from before to after switching of the communication method.