Non-encapsulation mobile IP

Details Non-encapsulation mobile IP Non-encapsulation mobile IP

2005-01-11

2005-01-11

Patel, Ajit (Department: 2664)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S352000, C370S338000, C370S466000

Reexamination Certificate

active

06842456

ABSTRACT:
A method is provided of directing an internet protocol (IP) packet to a mobile node. The mobile node has a home address in a home network and is temporarily connectable in a foreign network having a foreign agent. The IP packet has a header portion including the destination address to which the IP packet is to be sent. The method comprises the steps of: receiving, in the home network, the IP packet including a destination address corresponding to the home address of the mobile node; modifying the IP packet by removing the home address of the mobile node from the header portion of the IP packet and replacing it with the foreign agent care-of address, and appending a mobile node identifier to the IP packet, and transmitting the modified IP packet.

REFERENCES:
patent: 5862345 (1999-01-01), Okanoue et al.
patent: 6130892 (2000-10-01), Short et al.
patent: 6195705 (2001-02-01), Leung
patent: 6230012 (2001-05-01), Willkie et al.
patent: 6501746 (2002-12-01), Leung
Willkie et al. (US 20020159465A1) discloses IP mobility support proxy mobile node registration.*
C. Perkins, “Minimal Encapsulation Within IP”,Network Working Group, Request for Comments: 2004, Category: Standards Track, IBM (Oct. 1996), pp 1-6.
C. Perkins, “IP Mobility Support”,Network Working Group, Request for Comments: 2002, Category: Standards Track, IBM (Oct. 1996), pp 1-79.
Singh, R. et al “RAT: a quick (and dirty?) push for mobility support” Proceedings WMCSA '99, Second IEEE Workshop On Mobile Computing Systems And Applications, New Orleans, LA, Feb. 25-26, 1999, pp. 32-40, p. 32, left-hand column, paragraph 5, p. 33, right-hand column, paragraph 4, p. 37, right-hand column, paragraph 6, p. 38, left-hand column, paragraph 5.
Perkins, C.E. “Mobile IP”, IEEE Communications Magazine, vol. 35, No. 5, May 1, 1997 pp. 84-86, 91-99, p. 85, left-hand column, paragraph 5, p. 86, right-hand column, paragraph 2, p. 92, right-hand column, paragraph 4—paragraph 7.

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