Continuous mobility across wireless networks by integrating...

Details Continuous mobility across wireless networks by integrating... Continuous mobility across wireless networks by integrating...

2006-05-02

2006-05-02

Trinh, Sonny (Department: 2687)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S445000, C370S351000, C709S229000

Reexamination Certificate

active

07039404

ABSTRACT:
The present invention supports mobility for a mobile node between different packet data services. In one embodiment, the invention includes listening for a registration message from a mobile node at an external interface of a gateway node of a wireless packet service, the registration message containing a care-of address for the mobile node that is outside of the wireless packet service, accepting a registration message from the mobile node at the external interface, and registering the mobile node to the care-of address contained in the registration message. This embodiment further includes sending a registration reply message to the mobile node via the care-of address, the registration reply message indicating successful registration, creating a binding for the mobile node, tunneling packets addressed to the mobile node to the care-of address, and receiving tunneled packets from the mobile node, decapsulating the tunneled packets and sending them to the appropriate address.

REFERENCES:
patent: 6061650 (2000-05-01), Malkin et al.
patent: 6289377 (2001-09-01), Lalwaney et al.
patent: 6539225 (2003-03-01), Lee
patent: 2002/0066036 (2002-05-01), Makineni et al.
patent: 2002/0161905 (2002-10-01), Haverinen et al.
patent: 2002/0181448 (2002-12-01), Uskela et al.
patent: 2003/0053453 (2003-03-01), Ono et al.

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