Method and apparatus for authentication in a wireless...

Details Method and apparatus for authentication in a wireless... Method and apparatus for authentication in a wireless...

H - Electricity

04

L

H04L 29/06 (2006.01) H04Q 7/38 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2391413

A method and apparatus for allowing a mobile station (110) in a wireless network to perform network authentication in association with mobile packet data services. The packet data serving node (PDSN) does not authenticate the mobile station with an authentication server prior to sending a CHAP success message. Rather, a mobile station is authenticated via an authentication server after the PDSN (130) receives an IPCP message indicating whether the mobile station desires to use Mobile IP in the current session. If the mobile station (110) desires to use Mobile IP, the PDSN (130) uses authentication techniques in accordance with Mobile IP protocols. In the preferred embodiment, if the mobile station (110) does not desire to use Mobile IP, the PDSN (130) authenticates the mobile station querying an authentication server with the buffered contents of a previously received CHAP challenge response.

La présente invention concerne un procédé et un appareil permettant à une station mobile (110) d'un réseau sans fil d'effectuer une authentification de réseau en association avec des services de communication par paquets entre terminaux mobiles. Le noeud de desserte de données par paquets (PDSN) n'authentifie pas la station mobile via un serveur d'authentification avant d'envoyer un message de réussite CHAP (Challenge Handshake Authentication Protocol-protocole d'authentification par identification et validation de transfert). La station mobile est authentifiée via un serveur d'authentification après que le PDSN (130) a reçu un message IPCP (Internet Protocol Control Protocol-protocole de contrôle pour le protocole Internet) indiquant si la station mobile (110) souhaite utiliser le protocole Mobile-IP pour la séance en cours. Si tel est le cas, le PDSN (130) utilise les techniques d'authentification conformément aux protocoles Mobile-IP. Dans le mode de réalisation préféré, si la station mobile (110) ne souhaite pas utiliser le protocole Mobile-IP, le PDSN (130) authentifie la station mobile en demandant à un serveur d'authentification le contenu mis en tampon d'une <= challenge-response >= (réponse à une chaîne unique) CHAP déjà reçue.

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