| 摘要 |
PURPOSE: To attain reduced price, miniaturization in size and saved power consumption of a device without the need of stabilizing this telephone system by switching a frequency in a short time. CONSTITUTION: Plural mobile stations are controlled by using a control channel 10 in a state in which a base station performs no information communication with any of mobile stations, and the control channel 10 is not used in a state in which the base station performs the information communication with at least one or more mobile stations by using information channels 11, 12, 13 and 14. |
