Patent ID: 7558581

Claim:
A communication apparatus, comprising: a communication device performing a packet communication with a radio network controller through a base transceiver station using an individual channel or a common channel in a wireless communication system as a physical channel; a storage device storing identification information about a communication line in a first state in which a packet communication is performed with the radio network controller using the individual channel, and line information, including a setting parameter of the communication line in the first state; and a control device releasing the individual channel with line information about the communication line held when an index of an amount of packet data communication in the first state is compared with a predetermined threshold and the index falls below the threshold, performing control of changing to a second state in which a packet communication is performed with the radio network controller using the common channel, and performing control of recovery to the first state using the setting parameter when an index of an amount of packet data communication in the second state is compared with the threshold, and when the index exceeds the threshold wherein the communication device transmits a reset request for the individual channel to the radio network controller when the index of the amount of packet data communication in the second state exceeds the threshold and receives a resume request from the radio network controller, and the control device performs control for recovery to the first state using a setting parameter corresponding to identification information about the communication line included in the resume request.