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System and method for preserving battery life for a mobile station

  • US 8,619,653 B2
  • Filed: 11/24/2009
  • Issued: 12/31/2013
  • Est. Priority Date: 05/27/2009
  • Status: Active Grant
First Claim
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1. A mobile station capable of accessing a wireless communication network comprising a plurality of base stations, the mobile station comprising processing circuitry configured to:

  • determine if a battery level of the mobile station is below a selected one of a plurality of power level thresholds;

    upon a determination that the battery level is below the selected power level threshold, send a battery report describing the battery level is below the selected power level threshold to a first base station of the wireless communication network, and enter a battery power preservation mode;

    in case of handover being triggered, conduct the handover from the first station to a second base station, maintaining the battery power preservation mode;

    determine if the battery level of the mobile station rises to the selected power level threshold;

    upon a determination that the battery level of the mobile station rises to the selected power level threshold, send a cancellation message cancelling the battery report to either the first base station or the second base station if the handover has been conducted, and exit the battery power preservation mode; and

    upon receiving a denial of entering the battery power preservation mode from the base station, refrain from entering the power reservation mode.

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