PROXY SERVER DEVICE FOR MOBILE MULTIMEDIA SERVICE AND POLICY CONTROL METHOD

摘要

PURPOSE: A proxy server device for a mobile multimedia service is provided to enable a proxy server to function as a termination of a mobile multimedia subsystem by separating functions of a mobile communication network and a mobile multimedia network, thereby easily adding a service logic or expanding a network node in the mobile multimedia network. CONSTITUTION: An SIP(Session Initiation Protocol) processor(111) receives an SIP message from a mobile terminal. An SIP access processor(112) interfaces the SIP processor(111) with an upper application layer. A DNS access processor(114) is used to know an address of a location register having location information of the mobile terminal. A policy controller(113) controls a new QoS bearer setup with a mobile communication network according to QoS changes. A proxy server call controller(115) carries out a call processing procedure. A subscriber information manager(116) connects the proxy server call controller(115).