| 摘要 |
In a wireless telephone system, a wireless section of the base station for informing talking mobile wireless terminals of a connection request through a first frequency and for transmitting/receiving control data to a mobile wireless terminal which is in a reception waiting state through a second frequency during talking between the mobile wireless terminals is further simply constituted. Synchronous information is transmitted from the base station through the first frequency, and the first and the second mobile wireless terminals which have received the synchronous information perform a bi-directional and direct talking in a synchronized manner with the base station on the basis of the synchronous information. In this way, the base station is able to ensure a free period which is allocated to switching of the oscillation frequency of a frequency-selecting oscillators and to transmission/reception of the control data by using the second frequency, in addition to a period for transmitting the synchronous information through the first frequency.
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