Gateway device, mobile terminal, mobile communication method, and program

摘要

A gateway device connects a packet transfer device on a mobile high-speed network and a radio network controller on a mobile circuit-switched network via an IMS network, and if the gateway device receives from the packet transfer device a request signal for changing a bit rate of audio, the gateway device converts an audio compressed-and-encoded bit stream, stored in a packet transmitted from the packet transfer device or the radio network controller, into a bit rate requested in the request signal and transmits the converted bit stream to the radio network controller or the packet transfer device.

主权项

1. A gateway device configured to connect a packet transfer device on a mobile high-speed network and a radio network controller on a mobile circuit-switched network via an IP multimedia subsystem (IMS) network, the gateway device comprising:
a reception device configured to receive a request signal for changing a bit rate of audio from the packet transfer device; one or more processing devices configured to convert an audio compressed-and-encoded bit stream, stored in a packet transmitted from the packet transfer device or the radio network controller, into a bit rate requested in the request signal when the gateway device receives the request signal for changing the bit rate of audio at the transmission and reception device; and a transmission device configured to transmit the converted bit stream to the radio network controller or the packet transfer device.