Channel communication device and method for mobile...

Details Channel communication device and method for mobile... Channel communication device and method for mobile...

H - Electricity

04

B

H04B 7/06 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2305871

A channel communication device and method for a mobile communication system using transmission antenna diversity. A base station alternatively transmits signals on a common channel via at least two antennas at first and second intervals. A mobile station estimates a time relationship between the alternatively switched common channel and a user channel and measures the power of the received signals corresponding to the first and second intervals. The mobile station selects an antenna having stronger power by comparing the power of the signal corresponding to the first interval with the power of the signal corresponding to the second interval, and informs the base station of the selected antenna. The base station transmits a dedicated channel via the selected antenna.

Cette invention a trait à une unité de communication à canaux et à une technique relative à un système mobile de communications utilisant une antenne d'émission en diversité. Une station de base émet, tour à tour, des signaux sur un canal commun par le biais d'au moins deux antennes et ce, à un premier et à un second intervalle de temps. Une station mobile, qui évalue les relations d'ordre temporel existant entre le canal commun commuté alternativement et un canal d'usager, mesure la puissance des signaux reçus correspondant aux deux intervalles de temps. Cette station mobile sélectionne une antenne dotée d'une plus grande puissance en comparant la puissance du signal correspondant au premier intervalle de temps à celle du signal correspondant au second intervalle de temps et indique à la station de base quelle est l'antenne sélectionnée. La station de base émet alors un canal spécialisé par le biais de l'antenne sélectionnée.

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