Dual Stack Mobile Communication System

PURPOSE: A dual stack mobile communication system is provided to smoothly perform an inter-network interworking with respect to all services independently embodied in a conventional network and a new network. CONSTITUTION: A dual stack HLR(Home Location Register)(500) connects to an SS7(Signaling System 7) network(30), unitedly manages location registration with respect to a synchronous network or asynchronous network subscriber, and searches information for generating two output signaling points according to a synchronous protocol or an asynchronous protocol. The dual stack HLR(500) generates a corresponding one output signaling point, and transmits a message to the corresponding output signaling point. A dual stack SMC(Short Message service Center)(600) connects to the SS7 network(30), unitedly manages a short message service with respect to the synchronous network or asynchronous network subscriber, and generates information for generating two output signaling points according to a 2.5G(Generation) synchronous protocol or a 3G asynchronous protocol, with respect to one input signaling point according to the synchronous protocol or the asynchronous protocol. The dual stack SMC(600) generates a corresponding one output signaling point, and transmits a message to the corresponding output signaling point. A dual stack SCP(Service Control Point)(700) connects to the SS7 network(30), unitedly manages an intelligent network service with respect to the synchronous network or asynchronous network subscriber, and searches information for generating two output signaling points according to the synchronous protocol or the 3G asynchronous protocol, with respect to one input signaling point according to the synchronous protocol or the 3G asynchronous protocol. The dual stack SCP(700) generates a corresponding one output signaling point, and transmits a message to the corresponding output signaling point.