Scheme for controlling transmission powers during soft...

H - Electricity – 04 – B

Patent

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H04B 7/005 (2006.01) H04Q 7/38 (2006.01) H04Q 7/32 (2006.01) H04Q 7/30 (2006.01)

Patent

CA 2205714

A scheme for controlling transmission powers during a soft handover in a CDMA mobile communication system, in which the receiving quality can always satisfy the reference quality even when a relationship between the receiving qualities at the base stations is reversed within the selective combination interval. In this transmission power control scheme, one radio channel among a plurality of radio channels is selected as a reference radio channel at the prescribed selective combination interval, and then a transmission power control is carried out at a prescribed transmission power control interval so that a receiving quality of the reference radio channel satisfies a prescribed reference quality, while not switching the reference radio channel within the prescribed selective combination interval.

L'invention est une méthode de commande des puissances d'émission au moment d'un transfert dans un système de communication mobile AMDC dans laquelle la qualité de la réception peut rester égale à la qualité de référence même quand la relation entre les qualités des réceptions aux stations de base est inversée dans l'intervalle de combinaison. Dans cette méthode, un canal radio faisant partie d'une pluralité de canaux radio est sélectionné comme canal radio de référence à l'intervalle de combinaison prescrit, puis une opération de commande des puissances d'émission est effectuée dans l'intervalle de commande prescrit de façon à ce que la qualité de réception du canal radio de référence ait la valeur prescrite, sans qu'il soit nécessaire de commuter ce canal dans l'intervalle de combinaison prescrit.

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