Method and apparatus for optimizing spectrum utilization by...

H - Electricity – 04 – W

Patent

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H04W 16/14 (2009.01) H04W 72/02 (2009.01)

Patent

CA 2728838

A technique for a secondary communication system to utilize spectrum designated to another (or primary) communication system is provided. By ranking a plurality of secondary base stations based on base station transmit power, calculated required transmit power and path loss, a set of cri-teria is developed for selecting a highest ranked secondary base station for operation within a primary's spectrum. The ranking may be adapted based on mobility of the secondary's subscriber; and as such the secondary system communicates within the primary's spectrum using the adaptively ranked base stations. Channel selection may also be ranked. The technique and apparatus allows a cognitive radio (CR) net-work to operate within an incumbent network's spectrum.

La présente invention concerne une technique pour un système de communication secondaire pour utiliser un spectre conçu pour un autre système de communication (ou système de communication primaire). En rangeant une pluralité de stations de base secondaires sur la base dune puissance de transmission de station de base, dune puissance de transmission nécessaire calculée et dun affaiblissement de propagation, un jeu de critères est développé pour sélectionner une station de base secondaire de rang le plus élevé pour le fonctionnement au sein dun spectre du système primaire. Le classement en rangs peut être adapté sur la base de la mobilité de labonné du système secondaire, et en tant que tel, le système secondaire communique au sein du spectre du système primaire en utilisant les stations de base qui ont subi un classement adaptatif. La sélection de canal peut également être classée en rangs. La technique et lappareil permettent à un réseau radio cognitif (CR) de fonctionner au sein dun spectre du réseau titulaire.

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