Achieving PPP mobility via the mobile IP infrastructure

Details Achieving PPP mobility via the mobile IP infrastructure Achieving PPP mobility via the mobile IP infrastructure

2005-09-20

2005-09-20

Ngo, Ricky (Department: 2663)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S401000, C370S338000, C370S475000

Reexamination Certificate

active

06947400

ABSTRACT:
A method and system is provided for transmitting information from a mobile computer to a server utilizing point-to-point protocol (PPP). The system enables a PPP session to be maintained between a mobile user device and a PPP termination device. A Mobile IP address is assigned to customer premise equipment (CPE) associated with the user device, e.g., a PC. The CPE includes a Mobile IP Mobile Node and L2TP access concentrator (LAC). The Mobile IP address is registered with a Home Agent. The PC initiates a PPP session to the LAC, which initiates an L2TP session to an L2TP Network Server (LNS) via a tunel between the Home Agent and a Foreign Agent. The Mobile IP Mobile Node registers with the Home Agent each time it detects a new base station. Thus, the Home Agent is informed of the new location to forward IP packets for the mobile computer.

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C. Perkins, “IP Mobility Support”, Network Working Group, RFC 2002, Oct. 1996, pp. 1-79.

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