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Sensor uses in communication systems

  • US 8,843,181 B2
  • Filed: 05/27/2009
  • Issued: 09/23/2014
  • Est. Priority Date: 05/27/2009
  • Status: Active Grant
First Claim
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1. A method for reducing power consumption in a mobile device, comprising:

  • receiving movement information;

    establishing movement data based on uncertainty of the movement information, wherein the movement information is received from a movement sensor and/or a Satellite Position System (SPS) receiver;

    determining a probability that the mobile device is stationary using the movement data;

    combining the movement information from the movement sensor and the SPS receiver to refine the movement data;

    determining that the mobile device is stationary when the determined probability is greater than a threshold probability; and

    reducing a frequency of searching for a signal source when the mobile device is stationary, wherein the signal source comprises a base station and/or an SPS satellite.

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