Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2008-03-11
2008-03-11
To, Doris H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S393000
Reexamination Certificate
active
07342932
ABSTRACT:
A packet transmission system includes a home agent providing a home link and a home address to a mobile node, one or more access routers, each providing a foreign link and a c/o address to the mobile node, and one or more mobility support routers that relay a packet to the destination between the mobile node and the home agent or a counterpart correspondent node. When the mobile node moves into a new foreign link, the corresponding access router transmits a registration request to the home agent and/or the correspondent node. When acquiring a registration request on the way to the destination, each mobility support router stores an entry having the home address of the mobile node and the c/o address contained in the registration request, and produces and transmits a new registration request updating the c/o address to its own address. When receiving a packet addressed to the home address recorded in the entry, the mobility support router encapsulates this packet to produce a tunneling packet and relays the tunneling packet to the c/o address that is recorded in the entry in association with the home address, thereby correctly forwarding the data packet to the destination.
REFERENCES:
patent: 6230012 (2001-05-01), Willkie et al.
patent: 6973086 (2005-12-01), Patil et al.
patent: 2001/0014917 (2001-08-01), Ishiyama et al.
patent: 2001/0046223 (2001-11-01), Malki et al.
patent: 2004/0100951 (2004-05-01), O'neill
patent: 1 009 134 (2000-06-01), None
patent: 1 030 491 (2000-08-01), None
patent: 1 032 178 (2000-08-01), None
patent: 2000-0046185 (2000-07-01), None
patent: WO 00/44183 (2000-07-01), None
patent: WO 01/06734 (2001-01-01), None
S. F. Foo, et al., “Regional Aware Foreign Agent (RAFA) for Fast Local Handoffs”, Internet Engineering Task Force, XP-015011797, Nov. 1998, pp. i-iii and 1-21.
Farid Adrangi, et al., “Mobile IPv4 Traversal Across NAT and VPN Gateways”, XP-015009933, Jul. 2001, pp. 1-30 and cover page.
Gihwan Cho, et al., “An Efficient Location and Routing Scheme for Mobile Computing Environments”, IEEE Journal on Selected Areas in Communications, XP-000499093, vol. 13, No. 5, Jun. 1995, pp. 868-879.
Pravin Bhagwat, et al., “Network Layer Mobility: An Architecture and Survey”, IEEE Personal Communications, XP-000593928, vol. 3, No. 3, Jun. 1996, pp. 54-64.
Ikeda Takehiro
Okajima Ichiro
Omae Koji
Umeda Narumi
Haile Feben Micael
NTT Docomo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
To Doris H.
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