A radio communication system, preventing communication disconnection when a communication failure occurs in a base station, is provided. The radio communication system includes a common base station (BTS-C) communicable with each communication area of the plurality of BTS (FIG. 1A), in addition to a plurality of base stations (BTS) each located in each communication area. In place of a base station BTS which becomes a communication impossible state with a terminal in the communication area, the BTS-C communicates with the terminal MS in the communication area concerned.