Forward link power control device and methods for a mobile...

H - Electricity – 04 – B

Patent

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Details

H04B 7/005 (2006.01) H04Q 7/20 (2006.01)

Patent

CA 2295485

A forward link power control device for a mobile communication system supporting a transmission diversity function. The power control device comprises a base station device and mobile station device. The base station device transmits a traffic signal via at least two antennas, switches the traffic signal to be transmitted to any one of the two antennas based on a power control group period, and equally controls transmission power of the traffic signal being transmitted to the antennas according to power control information received via a reverse link. The mobile station device receives signals output from the antennas of the base station using one antenna, separately measures power of a traffic signal and an interference signal received for a power control group duration which is at least twice an antenna switching time of the base station device, averages the measured value to generate a power control information and multiplexes the power control information to a reverse link transmission signal to transmit the power control information to the base station.

L'invention concerne un dispositif de commande de puissance de liaison aval pour un système mobile de communications, supportant une fonction de diversité de transmissions. Ce dispositif comprend une station de base et une station mobile. La station de base émet un signal de trafic via au moins deux antennes, commute ledit signal de trafic à transmettre à l'une des deux antennes en fonction d'un intervalle de groupe de commande de puissance, et commande également la puissance d'émission du signal de trafic transmis vers les antennes en fonction des informations de commande de puissance reçues via une liaison inverse. La station mobile reçoit une sortie de signaux provenant des antennes de la station de base au moyen d'une antenne, mesure séparément la puissance d'un signal de trafic et d'un signal d'interférence reçu pendant une durée de groupe de commande de puissance égale à au moins deux fois le temps de commutation d'une antenne de la station de base, moyenne les valeurs mesurées pour produire des informations de commande de puissance et multiplexe ces informations avec un signal de transmission de liaison, inverse afin de transmettre lesdites informations de commande de puissance à la station de base.

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