Method and apparatus for improving acquisition probability...

H - Electricity – 04 – W

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H04W 52/02 (2009.01)

Patent

CA 2722789

A method and an apparatus for system acquisition at a wireless device while maintaining a predetermined battery life span, include determining a level of remaining battery power upon entering an out of service state. A duty cycle, comprising a search time and sleep time, of acquisition attempts is determined such that the level of remaining battery power lasts for the defined battery life span. The duty cycle is determined by adjusting at least one of the search time and the sleep time, depending on how long the remaining battery power is required to last.

La présente invention concerne un procédé et un appareil permettant à l'acquisition de système par un dispositif radio de préserver une durée de vie de batterie définie. Ce procédé consiste à déterminer le niveau de la charge qui reste dans la batterie dès qu'elle arrive à l'état "hors service". En l'occurrence, on détermine un cycle de service de tentatives d'acquisition, englobant un temps de recherche et un temps de veille, de façon que le niveau de la charge qui reste dans la batterie soit suffisant pour la durée de vie de batterie définie. Pour déterminer le cycle de service, le procédé consiste alors à ajuster l'un au moins des deux temps que sont le temps de recherche et le temps de veille, en fonction de la durée pendant laquelle la charge restant dans la batterie doit pouvoir tenir.

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