| 摘要 |
PURPOSE: A packet data network gateway changing a CP(Charging Profile) according to connection networks, a mobile communication system thereof, and a method thereof are provided to change a CP of a previous connection network to a CP set in a changed connection network by searching for a CP defined according to each connection network. CONSTITUTION: When a terminal device is connected to an LTE(Long Term Evolution) network, an S-GW(Serving-GateWay)(320) processes the call of the terminal device in the LTE network. When the terminal device is connected to a WCDMA(Wideband Code Division Multiple Access) network, an SGSN(Serving GPRS Support Node)(230) processes the call of the terminal device in the WCDMA network. A PDN-GW(Packet Data Network-GateWay)(350) sets different CPs according to connection networks for the terminal device. If the connection network for the terminal device is changed, the PDN-GW changes a CP for the terminal device into a CP corresponding to the changed connection network and applies the same.
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