CELL SEARCH CONTROL METHOD AND MOBILE MACHINE USING SAME

摘要

A cell search control method suppressing the power consumption of a mobile machine and making an appropriate judgment on whether or not the mobile machine is in a coverage area. A mobile machine comprises a cell search executing section (120) for executing a cell search by detecting a broadcast signal from a base station, a signal reception judging section (130) for comparing a measurement value X of a signal from the base station with a reception judgment threshold A for a report signal and judging whether or not to receive the report signal from the base station, and a presence-in-cell judging section (170) for comparing the measurement value X with a presence-in-cell permission threshold B included in the report signal and judging whether or not to enter the cell of the base station. According to the result of the judgment by the presence-in-cell judging section, the reception judgment threshold A or the waiting time for cell search can be adjusted, or base stations for cell search can be selected. With this, the power consumption of a mobile machine can be suppressed, and appropriate presence-in-cell judgment can be performed even if the presence-in-cell permission threshold B is changed.