| 摘要 |
PURPOSE:To ensure the communication channel by utilizing a multi-channel access system so as to send a carrier from a station under processing of data in two stations in charge of data transmission during the period. CONSTITUTION:In applying data transmission between a mobile station 1 and a command station 3 while utilizing the multi-channel access system, a control station 2 is interposed inbetween and the period of no transmission by any of the stations 1, 3 is consecutive for a prescribed time or over, the control station 2 cancels the allocation of the communication channel. In sending data from the mobile station 1 of the command station 3, the mobile station 1 applies data processing as required and in this case, a radio equipment 5 of the station 1 starts a transmission section 9 to send a carrier continuously or at an interval of a prescribed time. Thus, the allocation of the channel is not cancelled by the control station 2 and the channel is ensured. |
