Disclosed user equipment performs intermittent reception in a different frequency from a frequency of a serving cell belonging to a current radio access network or in a different radio access network from the current radio access network. The user equipment includes a receiving unit for receiving and demodulating a control signal and a cell search unit for performing a cell search in a specified frequency. When a release signal is received, the user equipment switches to a preliminary intermittent reception mode where the receiving unit intermittently receives the control signal in the serving cell and the cell search unit performs the cell search in the different frequency or the different radio access network between intermittent reception timings. Then, the user equipment switches to a normal intermittent reception mode where the receiving unit intermittently receives the control signal in the different frequency or the different radio access network.