| 摘要 |
<p>A wireless communication system in which a communication apparatus (101) performs a packet communication with a radio network controller (103) through a base transceiver station (102) stores identification information about a communication line in a first state in which communications are performed using an individual channel and line information including a setting parameter. When an index of an amount of data communication in the first state falls below a threshold, the individual channel is released and a transition to a second state in which communications are performed using a common channel is performed. When an index in the second state exceeds the threshold, recovery to the first state is performed using the setting parameter.
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