Method for switching and managing frequency access in...

H - Electricity – 04 – B

Patent

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H04B 7/26 (2006.01)

Patent

CA 2629880

Provided are a channel switching method for effectively performing channel switching in a cognitive radio system while protecting an incumbent user, a method of managing a frequency channel, and a base station and customer premises equipment (CPE) using the methods. In the channel switching method performed by the base station, a currently unavailable first frequency channel is detected from among at least one uplink/downlink frequency channel which is set as a communication channel with the CPE; a channel switching request message requesting switching from the first frequency channel to a second frequency channel is transmitted to the CPE; and the first frequency channel is switched to the second frequency channel when a channel switching report message reporting that channel switching is to be performed in response to the channel switching request message is received from the CPE.

L'invention concerne une méthode de commutation de canal destinée à effectuer une commutation de canal de manière efficace dans un système de radio cognitive. Cette méthode offre une protection à un utilisateur autorisé. L'invention concerne également une méthode de gestion d'un canal de fréquences, et une station de base, ainsi qu'un équipement de bâtiment client (CPE) faisant appel à ces méthodes. Dans la méthode de commutation de canal effectuée par la station de base, un premier canal de fréquences non disponible à l'instant présent est détecté à partir d'au moins un canal de fréquences de liaison montante/descendante qui est défini comme un canal de communication avec le CPE; un message de demande de commutation de canal demandant une commutation du premier canal de fréquences à un second canal de fréquences est transmis au CPE; et le premier canal de fréquences est commuté sur le second canal de fréquences, lorsqu'un message de rapport de commutation de canal rapporte qu'une commutation de canal doit être effectuée, en réponse au message de demande de commutation de canal reçu par le CPE.

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