Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-28
2006-03-28
Cumming, William D. (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S433000, C455S435100, C455S445000, C455S456100, C709S228000, C709S229000, C709S239000, C709S245000
Reexamination Certificate
active
07020464
ABSTRACT:
A system and method for mobility support handles address changes of a mobile host to provide transparent session continuity without packet overhead or the need for assistance of an agent on the network. When the mobile host changes to a new address, its old address is deprecated. The mobile host sends an address change message to each of its correspondent hosts over a secured control channel and preferably through a tunnel created based on the old and new addresses. Upon receiving the notification, the correspondent host returns an acknowledgment through the control channel and modifies its security filters and transport control parameters corresponding to the connection with the mobile host to use the new address. After receiving the acknowledgment, the mobile host modifies its security filters and transport control parameters for the connection to use the new address. As a result, the connection between the mobile host and the correspondent host has migrated to the new mobile host address. The migration is transparent to applications on the mobile and correspondent hosts and without the assistance of an agent.
REFERENCES:
patent: 6061650 (2000-05-01), Malkin et al.
patent: 6104929 (2000-08-01), Josse et al.
patent: 6195705 (2001-02-01), Leung
patent: 6230012 (2001-05-01), Willkie et al.
patent: 6360269 (2002-03-01), Mamros et al.
patent: 6456621 (2002-09-01), Wada et al.
patent: 6505047 (2003-01-01), Palkisto
patent: 6526033 (2003-02-01), Wang et al.
patent: 6535493 (2003-03-01), Lee et al.
patent: 6574214 (2003-06-01), Khalil et al.
patent: 6651105 (2003-11-01), Bhagwat et al.
patent: 6697354 (2004-02-01), Borella et al.
patent: 6728536 (2004-04-01), Basilier et al.
Handley et al., “SDP: Session Description Protocol,”Internet Engineering Task Force, pp. 1-31 (Mar. 2001).
Handley et al., “SIP: Session Initiation Protocol,”Network Working Group, Request for Comments 2543, pp. 1-153 (Mar. 1999).
Maughan, D., Internet Security Association and Key Management Protocol (ISAKMP),Network Working Group, Request for Comments 2408, pp. 1-71 (Nov. 1998).
Orman, H., “ The Oakley Key Determination Protocol,”Network Working Group, Request for Comments 2412, pp. 1-46 (Nov. 1998).
Vakil, F., “Supporting Service Mobility with SIP,”Internet Engineering Task Force, pp. 1-10 (Dec. 2000).
Bellovin et al., “On the Use of SCTP with IPsec,”Network Working Group—Internet Draft, pp. 1-6 (2000) printed at p.potaroo.net/ietf/all-ids/draft-ietf-ipsec-sctp-00.txt.
Johnson et al., “Mobility Support in IPv6,”IETF Mobile IP Working Group—Internet Draft, pp. 1-149 (Mar. 2002) printed at lug.org/˜griswold/Drafts-RFCs/draft-ietf-mobileip-ipv6-16.txt.
Kelly, Scott, “Content Requirements for ISAKMP Notify Messages,”IPSEC Working Group—Internet Draft, pp. 1-27 (Nov. 2000) printed at ietf.org/proceedings/01mar/l-D/ipsec-notifymsg-04.txt.
Piper, D., “The Internet IP Security Domain of Interpretation for ISAKMP,”Network Working Group, Request for Comments 2407, pp. 1-32 (Nov. 1998) printed at faqs.org/ftp/rfc/pdf/rfc2407.txt.pdf.
Bahl Pradeep
Srinivas Nelamangala Krishanaswamy
Cumming William D.
Wolf Greenfield & Sacks P.C.
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