To reduce power consumption without lowering a call origination rate or a call acceptance rate.

A judging unit 142 judges whether a communication is possible or not with a base station whose spread code and spread timing are detected. A counting unit 143 counts the number of the communicable base stations in which the diffusion code and the timing are detected. When this number is a predetermined threshold value or more, the unit 143 judges that it is not necessary to newly detect a base station, and informs to end without normal cell searching for detecting the new base station to a timer 144. When this number is less than the predetermined threshold value, the unit 143 judges that it is necessary to detect a new base station, and designates a delay profile calculating unit 133 to conduct a normal cell searching for detecting a new base station.