A radio communication method of a radio communication system, the radio communication system including: a plurality of base stations (10A, 10B) mounted with a plurality of radio communication units for which different communication schemes are settable; a terminal station (20A; 20B; 30A; 30B) configured to perform radio communication with each of the plurality of radio communication units of each of the plurality of base stations (10A, 10B) in a certain communication scheme; and a centralized control station configured to control the plurality of base stations (10A, 10B), the method comprising: calculating, by the centralized control station, a setting policy of a communication scheme for the radio communication unit of the base station (10A, 10B) and a switching policy for the terminal station (20A; 20B; 30A; 30B) and the radio communication unit, and notifying the base station (10A, 10B) of the policies; setting, by the base station (10A, 10B), the setting policy and the switching policy, notified from the centralized control station, for the radio communication unit; collecting, by the base station (10A, 10B), communication scheme information of communication schemes selectable by the terminal station (20A; 20B; 30A; 30B) from the terminal station (20A; 20B; 30A; 30B) to be connected; selecting, by the base station (10A, 10B), a radio communication unit to be connected by the terminal station (20A; 20B; 30A; 30B) in accordance with the communication scheme information, the setting policy, and the switching policy; updating, by the centralized control station, the setting policy, based on the communication scheme information of the terminal station (20A; 20B; 30A; 30B) acquired from the base station (10A, 10B), and notifying the base station (10A, 10B) of the updated setting policy; and updating, by the base station (10A, 10B), a setting of the communication scheme to the radio communication unit, with the notified update information of the setting policy. a plurality of base stations (10A, 10B) mounted with a plurality of radio communication units for which different communication schemes are settable; a terminal station (20A; 20B; 30A; 30B) configured to perform radio communication with each of the plurality of radio communication units of each of the plurality of base stations (10A, 10B) in a certain communication scheme; and a centralized control station configured to control the plurality of base stations (10A, 10B), the method comprising: calculating, by the centralized control station, a setting policy of a communication scheme for the radio communication unit of the base station (10A, 10B) and a switching policy for the terminal station (20A; 20B; 30A; 30B) and the radio communication unit, and notifying the base station (10A, 10B) of the policies; setting, by the base station (10A, 10B), the setting policy and the switching policy, notified from the centralized control station, for the radio communication unit; collecting, by the base station (10A, 10B), communication scheme information of communication schemes selectable by the terminal station (20A; 20B; 30A; 30B) from the terminal station (20A; 20B; 30A; 30B) to be connected; selecting, by the base station (10A, 10B), a radio communication unit to be connected by the terminal station (20A; 20B; 30A; 30B) in accordance with the communication scheme information, the setting policy, and the switching policy; updating, by the centralized control station, the setting policy, based on the communication scheme information of the terminal station (20A; 20B; 30A; 30B) acquired from the base station (10A, 10B), and notifying the base station (10A, 10B) of the updated setting policy; and updating, by the base station (10A, 10B), a setting of the communication scheme to the radio communication unit, with the notified update information of the setting policy. calculating, by the centralized control station, a setting policy of a communication scheme for the radio communication unit of the base station (10A, 10B) and a switching policy for the terminal station (20A; 20B; 30A; 30B) and the radio communication unit, and notifying the base station (10A, 10B) of the policies; setting, by the base station (10A, 10B), the setting policy and the switching policy, notified from the centralized control station, for the radio communication unit; collecting, by the base station (10A, 10B), communication scheme information of communication schemes selectable by the terminal station (20A; 20B; 30A; 30B) from the terminal station (20A; 20B; 30A; 30B) to be connected; selecting, by the base station (10A, 10B), a radio communication unit to be connected by the terminal station (20A; 20B; 30A; 30B) in accordance with the communication scheme information, the setting policy, and the switching policy; updating, by the centralized control station, the setting policy, based on the communication scheme information of the terminal station (20A; 20B; 30A; 30B) acquired from the base station (10A, 10B), and notifying the base station (10A, 10B) of the updated setting policy; and updating, by the base station (10A, 10B), a setting of the communication scheme to the radio communication unit, with the notified update information of the setting policy.