Methods and apparatus for updating mobile node location...

H - Electricity – 04 – W

Patent

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H04W 64/00 (2009.01) H04W 68/00 (2009.01)

Patent

CA 2555818

Location update techniques are described. A dormant mobile node updates its location information by sending a first message over a wireless link to an access node. The access node generates a second update message in response to the first message. The second message includes a mobile node identifier and, in some embodiments is directed to the mobile node. The second message is received by a tracking agent, which updates location information corresponding to the mobile node. In the case where second message is an IP message and is routed to the mobile node using Mobile IP, a Mobile IP home agent routes the second message to the mobile node's last point of network attachment where the tracking agent is located and intercepts the message. The tracking agent may send a response message to the access node sending the second message.

L'invention concerne des techniques de mise à jour de localisation. Un noeud mobile dormant met à jour ses informations de localisation en envoyant un premier message sur une liaison sans fil à un noeud d'accès. Le noeud d'accès génère un second message de mise à jour en réponse au premier message. Le second message comprend un identificateur de noeud mobile et, dans certains modes de réalisation est envoyé au noeud mobile. Le second message est reçu par un agent de suivi, lequel met à jour les informations de localisation correspondant au noeud mobile. Lorsque le second message est un message IP et qu'il est acheminé vers le noeud mobile par IP mobile, un agent domestique IP Mobile achemine le second message vers le dernier point du noeud mobile d'un raccordement de réseau où l'agent de suivi se trouve et intercepte le message. L'agent de suivi peut envoyer un message de réponse au noeud d'accès envoyant le second message.

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