Method for operating network link with mobile telecommunication and wireless broadband internet

The present invention provides mobile communication and that, upon request for a handoff to the mobile at the user terminal are processed outgoing call on a mobile internet access network release the radio access network of a portable Internet network and the connection to the mobile communication network on the network interface technology between a mobile Internet attempts; and setting a base station controller and a packet connection between the data service node in the mobile communication network to perform the connection set-up process in the base station system of a mobile communication network according to the access attempt of the UE, the connection establishment the base station system from a base station controller notification method comprising, a terminal and a packet data service authentication in internet steps and, realm information obtained from the terminal and then proceed to the PPP setting process between the nodes to configure the pseudo-realm information to try the authentication process by the packet data serving node / and transmitting to the authorization server, the layer-2 tunneling Pro After the step of transmitting to the packet data service node to the interworking unit information to form a protocol in the authentication / authorization server, forming a layer-2 tunneling protocol between the packet data service node and the interworking unit interworking unit and a user terminal accessed in step with, the interworking unit using the method to proceed between the PPP access, the user ID and the realm information configured using the server domain of the access control router in a portable Internet network to perform an authentication process between the terminal and the interworking unit by allocating step and, IP information that was allocated through the portable Internet network to the method for notifying the handoff occurs to control the router, updating the traffic route information from the access control router to the access control router, an interworking unit between the terminal station, base station control system, the base station controller, a packet data serving node, inter Through King unit, the access control router, and a step for transmitting and receiving data traffic. According to the present invention, data loss, and by using the L2TP interface that can reduce the delay implementing the network interface technology between the mobile and portable Internet, it can reduce the mobile communication network and the hand of data loss and delay during OFF of the portable Internet manganese not only have the effect, while providing seamless mobility for users that can be operated independently of each network. Handoff, WLAN, CDMA2000, WiBro, L2TP