Efficient mobility management scheme for a wireless internet access system

A wireless data network comprising:

• a home network that includes a home mobile switching center and a wireless end system, the home mobile switching center including a home registration server and a home inter-working function, the wireless end system including an end registration agent, the end registration agent being coupled to the home registration server;
• a PPP server, a message being coupleable from the end system through the home inter-working function to the PPP server;
• a foreign network that includes a foreign mobile switching center and a base station, the foreign mobile switching center including a serving registration server, the base station including an access hub, the access hub including a proxy registration agent;
• and
• a second end system subscribed to the home network and operating within the foreign network, the second end system including an end registration agent, the end registration agent being coupled to the proxy registration agent, the proxy registration agent being coupled to the serving registration server, the serving registration server being coupled to the home registration server,
• wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the end system;
• wherein the home registration server includes a module to authenticate that the end system is authorized to receive services of the home network;
• wherein the serving registration server includes a module to authenticate that the end system is a subscriber of the home network;
• wherein the home network further includes a home billing processor;
• wherein the foreign network further includes a foreign accounting server and a foreign billing processor;
• and
• wherein the first serving inter-working function includes a foreign accounting collection module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

A wireless data network comprising:

• a home network that includes a home mobile switching center and a wireless end system, the home moble switching center including a home registration server and a home inter-working function, the wireless end system including an end registration agent, the end registration agent being coupled to the home registration server;
• a PPP server, a message being coupleable from the end system through the home inter-working function to the PPP server;
• a foreign network that includes a base station with an access hub and a foreign mobile switching center with a serving registration server, the access hub including a serving inter-working function, the serving inter-working function including a foreign accounting collection module;
• the home inter-working function including a home accounting collection module, and
• a second end system subscribed to the wireless data network and coupl cable to the foreign access hub, the home and server accounting collection modules collecting accounting data on message traffic transported between the second end system and a communications server through the home inter-working function and through the serving inter-working function.

A wireless data network comprising:

• a home network that includes a home mobile switching center and a wireless end system, the home mobile switching center including a home registration server and a home inter-working function, the wireless end system including an end registration agent, the end registration agent being coupled to the home registration server;
• a PPP server, a message being coupleable from the end system through the home inter-working function to the PPP server;
• a foreign network that includes a foreign mobile switching center with a serving registration server;
• the home mobile switching center includes a plurality of unassigned home inter-working functions;
• and
• a second end system subscribed to the home network and operating within the foreign network, the second end system including an end registration agent to form a registration request, the end registration agent sending the registration request through the serving registration server to the home registration server, the home registration server including a module to select an active home inter-working function from the plurality of unassigned home inter-working functions based on the registration request.

A wireless data network comprising:

• a home network that includes a home mobile switching center and a wireless end system, the home mobile switching center including a home registration server and a home inter-working function, the wireless end system including an end registration agent, the end registration agent being coupled to the home registration server;
• a PPP server, a message being coupleable from the end system through the home inter-working function to the PPP server;
• a foreign network that includes a foreign mobile switching center and a base station, the base station including an access hub with a serving inter-working function;
• and
• a roaming end system subscribed to the home network and operating within the foreign network, a message being transportable between the roaming end system and the home inter-working function through the serving inter-working function using a protocol that ensures in sequence delivery of data packets.