Patent ID: 7003315

Claim:
A mobile terminal for connecting to a plurality of mobile communication systems having different communication standards, comprising: a system acquiring section configured to acquire a first system from the plurality of mobile communication systems, and proceed to a standby state; a first determination section configured to detect a first reception quality of a signal transmitted from the first system, and check whether the detected first reception quality satisfies a first condition; a first reacquiring section configured to acquire from a plurality of mobile communication systems a second system having a second reception quality that satisfies a second condition if the first determination section determines that the detected first reception quality does not satisfy the first condition, and proceed to a standby state; a second determination section configured to detect a reception quality of a signal transmitted from a system other than the second system, and check whether there is a third system whose reception quality satisfies a third condition; and a second reacquiring section configured to acquire the third system satisfying the third condition if the second determination section determines that there is the third system whose reception quality satisfies the third condition, and proceed to a standby state, wherein the second system reacquiring section acquires the first system if the third system satisfying the third condition includes the first system.