Inter-working method of wireless internet networks (gateways)

An inter-working method of wireless Internet gateways comprising the steps of:

• (a) requesting a wireless channel of a wireless network and configuring a packet network to provide data service;
• (b) when a subscriber connects to the wireless network, authenticating the wireless Internet, connecting to wireless internet gateway(ex WAP gateway) thereof, receiving a connection menu, and requesting connection to a wireless internet gateway(ex WAP gateway) of external wireless Internet by means of Internet from its wireless internet gateway(ex WAP gateway) to an AAA authentication server of a home network;
• (c) performing a registration authentication including a negotiation process and a subscriber registration authentication at the AAA authentication server of the home network;
• (d) upon registration authentication, requesting, at the AAA authentication server of the home network, a service to a wireless internet gateway(ex WAP gateway) of an external network through an AAA authentication server of the external network;
• (e) negotiating registration authentication with a corresponding mobile communications provider network of a subscriber at the WAP gateway of the external network before the subscriber connects to the mobile communications provider network according to a policy, transmitting and receiving information on principal connection protocol, identifying an object ID, and reporting supportable functions thereof to each other thereby defining concrete service specification when connecting transmission layer to each other;
• (f) performing authentication process at an authentication client of an authentication server of the home network which is requested the service by the wireless internet gateway(ex WAP gateway) of the external network;
• and
• (g) if the authentication process requested from the external network is completed, negotiating a way of accounting between the home network and the external network, granting access to the network to receive a service portal menu and a new menu from the external network granted access and to provide service by using the menus.