| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a digital radio system falls into a state where a terminal station entering dedicated channel communication can not be monitored, and reliability of the digital radio system may be damaged as a result. SOLUTION: A digital radio system includes a control station, at least one base station coupled with the control station and a plurality of terminal stations connected with the base station through a radio channel. The control station includes at least a first control section and a first storage section, and the first control section of the control station includes a function for setting a dedicated channel to a communication channel of the radio channel and a function for monitoring position registrations of the plurality of terminal stations. The first control section is configured to transmit a position registration request transmission signal, at predetermined period intervals, through the dedicated channel to a terminal station entering the dedicated channel in the plurality of terminal stations. COPYRIGHT: (C)2009,JPO&INPIT
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