Smooth handoff via state exchange in wireless networks

Details Smooth handoff via state exchange in wireless networks Smooth handoff via state exchange in wireless networks

2006-12-26

2006-12-26

Kizou, Hassan (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S338000

Reexamination Certificate

active

07154868

ABSTRACT:
A system and method for providing a handoff of a call from a mobile node. The call has associated state information. The call is established between the mobile node and a first RNN and the mobile node and a first PDSN. Thereafter, the mobile node roams and establishes a link between the mobile node and a second RNN. A second PDSN is selected to service the mobile node. A direct communication path is established between the first PDSN and the second PDSN.State information of the call is exchanged between the first PDSN and the second PDSN using the communication path.

REFERENCES:
patent: 6904033 (2005-06-01), Perras et al.
patent: 2002/0021681 (2002-02-01), Madour
Choi et al. (A new multimedia network architecture using 3G CDMA2000 Vehicular Technology Conference, 2000. IEEE VTS-Fall VTC 2000. 52nd vol. 6, Sep. 24-28, 2000 pp. 2937-2944 vol. 6).
3rdGeneration Partnership Project 2 “3GPP2”,Wireless IP Architecture Based on IETF Protocols, www.3gpp2.org, Version 1.0.0, Jul. 14, 2000, pp. 1-51.

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