System and method for dynamic channel assignment

Details System and method for dynamic channel assignment System and method for dynamic channel assignment

H - Electricity

04

Q

H04Q 7/38 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2217288

A system and method for providing dynamic channel assignments in a microcellular system surrounded by a macrocellular system. The method characterizes the RF environment of the microcellular system and the macrocellular environment. Channels are then ranked according to the signal-to-interference ratio computed from the measured RF characteristics. A call is assigned to a highest ranked idle channel. All active calls are monitored to ensure voice quality and call performance by forcing hand-off to another channel before degradation occurs. In another embodiment, the system is self-configurable to changes in the macrocellular configuration by including remote power adjustment and remote Supervisory Audio Tone assignment functionality.

Système et méthode permettant l'affectation dynamique de canaux dans un système microcellulaire entouré par un système macrocellulaire. La méthode caractérise l'environnement RF du système microcellulaire et l'environnement macrocellulaire. Les canaux sont ensuite classés selon le rapport signal-bruit calculé à partir des caractéristiques RF mesurées. Un appel est affecté à un canal libre de la classe la plus élevée. Le contrôle de tous les appels actifs assure la qualité de la voix et la transmission efficace des appels, les appels étant transférés d'un canal à un autre avant que se produise une dégradation. Dans une autre version, le système peut s'autoconfigurer selon les modifications de la configuration macrocellulaire. Il comprend à cette fin des fonctions de téléréglage de puissance et de télé-affectation par tonalité audio de contrôle.

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