| 摘要 |
<p>A conversation channel allocation method is provided for a mobile communication system of MCA method to perform allocation of conversation channels between base stations and mobile stations. At a congestion state where all of the conversation channels are used for conversations respectively, when a new conversation request is given from a mobile station, a control channel, which is originally used for transmission of a control signal, is allocated to such a mobile station as a new conversation channel. Thus, the mobile station is capable of performing radio communication with the base station by using the control channel, so that a calling party is capable of performing conversation with a called party without interruption. When the conversation completes, the control channel is restored by canceling its function as the new conversation channel. If any one of the conversation channels ends conversation prior to completion of the conversation using the control channel so that it is now placed as a vacant conversation channel, the control channel is restored by canceling its function as the new conversation channel while such a vacant conversation channel is used for the conversation of the mobile station. Incidentally, in order to avoid jamming, the base station transmits a signal of low frequency tone, which is out of a prescribed conversation band, to other mobile stations to inform of utilization of the control channel for the conversation of the mobile station, while adjacent base stations stop transmitting control signals.</p> |
