Method and apparatus for adaptive closed loop power control...

H - Electricity – 04 – B

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H04B 7/005 (2006.01)

Patent

CA 2311288

A method and apparatus for controlling a parameter associated with a first signal (410) transmitted from a first station (120) to a second station (124) in a communication system (100) monitors a second signal (420) transmitted from the second station to the first station (120) to determine a propagation state associated with the transmitted signals (410, 420). A loop gain is adjusted based on the propagation state. The loop gain is used to adjust the size of commands used to adjust (i.e., increase or decrease) the parameter being controlled. If the propagation state is a quiescent state, the loop gain is set to one. If the propagation state is an active state, the loop gain is set to some value greater than one thereby increasing the size of the commands (555, 655) used to control the parameter. In a preferred embodiment of the present invention, the controlled parameter is a transmit power level of the first signal (410).

L'invention concerne un procédé et un dispositif de réglage d'un paramètre associé à un premier signal (410) émis à partir d'une première station (120) en direction d'une seconde station (124), dans un système de communication (100), le dispositif contrôlant un second signal (420) émis à partir de la seconde station en direction de la première (120), afin de déterminer un état de propagation associé aux signaux émis (410, 420). Un gain de boucle est réglé en fonction de l'état de propagation et il est utilisé pour régler la grandeur des commandes utilisées pour régler (c'est-à-dire pour augmenter ou diminuer) le paramètre en cours de réglage. Si l'état de propagation est un état silencieux, le gain de boucle est réglé sur un, et si c'est un état actif, le gain de boucle est réglé sur une valeur supérieure à un, augmentant ainsi la grandeur des commandes (555, 655) utilisées pour régler le paramètre. Dans un mode de réalisation préféré de l'invention, le paramètre réglé est un niveau de puissance d'émission du premier signal (410).

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