Apparatus and methods for home agent resiliency for mobile IPv4

Details Apparatus and methods for home agent resiliency for mobile IPv4 Apparatus and methods for home agent resiliency for mobile IPv4

2005-11-08

2008-10-28

Kincaid, Lester (Department: 2617)

Multiplex communications

Fault recovery

C370S217000, C370S218000

Reexamination Certificate

active

07443786

ABSTRACT:
Providing resiliency for mobile terminal data sessions, wherein the data sessions rely on Internet Protocol Version 4 and wherein at least one Home Agent node maintains a mobility bindings database for all registered mobile terminals while they are away from a home network. A first aspect of the invention provides physical Home Agent redundancy, perceived by each mobile node as Home Agent IP address redundancy, and a second aspect provides session resiliency. While the second aspect of the invention provides for session resiliency, it uses a mechanism of the former for master failure detection and Home Agent IP address take-over by a backup Home Agent.

REFERENCES:
patent: 7227863 (2007-06-01), Leung et al.
patent: 2002/0080752 (2002-06-01), Johansson et al.
patent: 2004/0202126 (2004-10-01), Leung
patent: 1523140 (2005-04-01), None

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