InterDigital Inc (IDCC)

[Gamco]

United States Patent 7,843,884
Heller November 30, 2010

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Achieving PPP mobility via the mobile IP infrastructure


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 tunnel between the Home Agent and the 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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Inventors: Heller; Howard Andrew (Indialantic, FL)
Assignee: IPR Licensing, Inc. (Wilmington, DE)

Appl. No.: 11/169,104
Filed: June 28, 2005

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
09773364 Jan., 2001 6947400


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Current U.S. Class: 370/331 ; 455/436
Current International Class: H04W 4/00 (20090101)
Field of Search: 455/440-442