Methods and apparatus for vpn support in mobility management

H - Electricity – 04 – L

Patent

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Details

H04L 12/56 (2006.01) H04W 8/08 (2009.01) H04W 80/02 (2009.01) H04W 80/04 (2009.01) H04L 29/08 (2006.01)

Patent

CA 2577058

MIP forwarding methods are described that use additional access link-layer identifiers and redirecting data packet identifiers to provide unambiguous forwarding through the MIP Foreign Agent when the Mobile Node has multiple Home Addresses, and/or when the Home Agent, or some intermediate MIP node between the Foreign Agent and the Home Agent, supports multiple pools of home addresses from overlapping address spaces. New identifiers are used to ensure that sufficient forwarding information exists in conjunction with the information in transmitted packets, to uniquely identify each packet flow. Each packet flow is a globally unique quartet of the MN identity, the HA, the HA address pool and the HoA.

La présente invention a trait à des procédés de renvoi automatique d'appels de téléphone mobile IP mettant en oeuvre des identifiants de couches de liaison d'accès supplémentaires et le réacheminement d'identifiants de paquets de données pour assurer un renvoi d'appel sans ambiguïté à travers un agent étranger lorsque le noeud mobile possède plusieurs adresses locales, et/ou lorsque l'agent local, ou un noeud mobile IP intermédiaire entre l'agent étranger et l'agent local, supporte une pluralité de groupements d'adresses locales à partir d'espaces d'adresses se recouvrant. De nouveaux identifiants sont utilisés pour assurer qu'une information de renvoi automatique d'appel suffisante existe conjointement avec l'information dans des paquets transmis, pour l'identification unique de chaque flux de paquets. Chaque flux de paquets est un groupe de quatre éléments constitué de l'identité de noeud mobile, de l'agent local, du groupement d'adresses locales et de l'adresse locale.

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