Power control device and method for controlling a reverse...

Details Power control device and method for controlling a reverse... Power control device and method for controlling a reverse...

H - Electricity

04

B

H04B 7/216 (2006.01) H04B 7/005 (2006.01) H04B 1/707 (2006.01) H04Q 7/30 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2324450

A common power control channel transmission device for a base station in a CDMA communication system is provided having a selector (350) for receiving power control commands to be transmitted to multiple subscribers and multiplexing the received power control commands; and a spreading modulator (372) for spreading an output of the selector by multiplying the output of the selector by a spreading sequence. The common power control channel transmission device can be used to control power of a reverse link common channel. For the power control of the reverse link common channel, the base station receives a signal from a mobile station via the reverse link common channel, and transmits to the mobile station a power control command for controlling a transmission power of the reverse link common channel according to a measured strength of the received signal.

Cette invention se rapporte à un dispositif de transmission à canal de commande de puissance commun, qui est destiné à une station de base d'un système de communication CDMA et qui comprend à cet effet un sélecteur (350) servant à recevoir des instructions de commande de puissance à transmettre à plusieurs abonnés et à multiplexer les instructions de commande de puissance reçues, ainsi qu'un modulateur d'étalement (372) servant à étaler la sortie du sélecteur en la multipliant par une séquence d'étalement. Ce dispositif de transmission à canal de commande de puissance commun peut être utilisé pour commander la puissance d'un canal commun de liaison retour. A cet effet, la station de base reçoit un signal provenant d'une station mobile via le canal commun de liaison inverse et elle transmet à la station mobile une instruction de commande de puissance permettant de commander la puissance de transmission du canal commun de liaison retour en fonction de l'intensité mesurée du signal reçu.

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