Method of providing security for relay station

Details Method of providing security for relay station Method of providing security for relay station

H - Electricity

04

W

H04W 12/04 (2009.01)

Patent

CA 2625085

A method of providing security of a relay station is disclosed, by which the security can be provided for the relay station in a broadband wireless access system having the relay station. In a mobile communication system to relay a signal transfer between a base station and a mobile station, the present invention includes the steps of performing a relay station authentication from an authentication server using an authentication protocol, receiving a master key from the authentication server, deriving an authentication key from the received master key, deriving a message authentication code (MAC) key using the derived authentication key, and relaying a signal exchanged between the mobile station and the base station using the derived message authentication code key.

L'invention concerne un procédé de sécurisation d'une station relais, qui permet de sécuriser la station relais dans un système d'accès sans fil à large bande comprenant ladite station. Dans un système de télécommunication mobile relayant le transfert d'un signal entre une station de base et une station mobile, le procédé comporte les étapes consistant à: faire authentifier une station relais par un serveur d'authentification à l'aide d'un protocole d'authentification; recevoir une clé maître du serveur d'authentification; produire une clé d'authentification à partir de la clé maître reçue; produire une clé de code d'authentification de message (MAC) à l'aide de la clé d'authentification produite; et relayer le signal échangé entre la station mobile et la station de base à l'aide de la clé de code d'authentification de message produite.

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