Adaptive reacquisition time in a slotted paging environment

Details Adaptive reacquisition time in a slotted paging environment Adaptive reacquisition time in a slotted paging environment

H - Electricity

04

B

H04B 1/7117 (2011.01) H04W 24/00 (2009.01) H04W 68/00 (2009.01) H04B 1/76 (2006.01)

Patent

CA 2323585

A method and circuit for adaptively determining a pilot signal reacquisition time. A searcher subsystem (55) measures a phase of the pilot signal. A control processor (62) measures a magnitude of a shift in the pilot signal phase, compares the measured magnitude to a shift threshold, and decreases the reacquisition time if the measured magnitude is not greater than the shift threshold. The control processor (62) also may compare the reacquisition time to a minimum reacquisition time, and decrease the reacquisition time only if the reacquisition time is greater than the minimum reacquisition time. Additionally, the control processor (62) may increase the reacquisition time to a maximum reacquisition time if the measured magnitude is greater than said shift threshold.

L'invention concerne un procédé et un circuit permettant de déterminer de manière adaptative un temps de réacquisition de signal pilote. Un sous-système (55) de recherche mesure une phase du signal pilote. Un processeur de commande (62) mesure une grandeur d'un décalage dans la phase du signal pilote, compare la grandeur mesurée à un seuil de décalage et réduit le temps de réacquisition si la grandeur mesurée ne dépasse pas le seuil de décalage. Le processeur de commande (62) peut aussi comparer le temps de réacquisition avec un temps de réacquisition minimum et diminuer le temps de réacquisition uniquement si le temps de réacquisition dépasse le temps de réacquisition maximum. En outre, le processeur de commande (62) peut augmenter le temps de réacquisition pour atteindre un temps de réacquisition maximum si la grandeur mesurée dépasse ledit seuil de décalage.

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