There is provided a radio communication system provided with a first base station, a second base station that communicates with the first base station, and user equipment that communicates with the first base station, the radio communication system including a determiner that determines, based on a predetermined reference value, sharing between signal processing that is to be performed by the first base station and signal processing that is to be performed by the second base station; a first signal processor for the first base station to perform the signal processing in accordance with the sharing determined by the determiner; and a second signal processor for the second base station to perform the signal processing in accordance with the sharing determined by the determiner.