Patent ID: 7990910

Claim:
A mobile station comprising: a communication control unit which sets a predetermined period including a synchronizing timing for a first radio base station, in response to an instruction from the first radio base station forming a cell in which the mobile station exists, for measuring a reception quality of a signal sent by a second radio base station forming a cell with a frequency different from a frequency used in the cell of the first radio base station; a timing setting unit which sets a plurality of measurement timings in the period set by the communication control unit so as to initiate, at each of the measurement timings, a measurement of the reception quality of the signal sent by the second radio base station; a reception quality comparing unit which compares the reception qualities measured at the measurement timings set by the timing setting unit, and selects an optimum reception quality therefrom; and a control information generating unit which reports the optimum reception quality selected by the reception quality comparing unit to the first radio base station as the reception quality of the signal sent by the second radio base station.