A radio terminal (1100A) comprises a communication unit (1120), a measurement unit (1140A), a measurement unit (1140B), and a control unit (1160A). The communication unit (1120) selects one of the CDMA (Code Division Multiple Access) scheme and the OFDM (Orthogonal Frequency Division Multiplexing) scheme as a communication scheme to be used in a cell formed by a radio base station and performs radio communication. The measurement unit (1140A) measures the receiving quality relating to the time difference between the preceding wave of a received signal and the delayed wave thereof in the OFDM scheme. The measurement unit (1140B) measures the receiving quality of a received signal in the CDMA scheme. In the case where the OFDM scheme is selected as the communication scheme to be used in an idle state, when the receiving quality relating to the time difference which is obtained by the measurement unit (1140A) is deteriorated below a threshold value corresponding to a guard interval used in the OFDM scheme, the control unit (1160A) causes the measurement unit (1140B) to measure the receiving quality of the received signal in the CDMA scheme.