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Energy efficient location detection

  • US 9,880,604 B2
  • Filed: 04/20/2011
  • Issued: 01/30/2018
  • Est. Priority Date: 04/20/2011
  • Status: Active Grant
First Claim
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1. A method in a device, the method comprising:

  • using, at the device, one or more low energy sensors to determine a mobility state of the device;

    determining, based on both the mobility state of the device and one or more places of interest for the device, an amount of time that is to elapse before the device reaches one of the one or more places of interest, the one place of interest having been defined prior to determining the amount of time, the device having one of multiple mobility states and each of the multiple mobility states corresponding to a different amount of time that is to elapse, each of the one or more places of interest including one or more attributes that define a respective place of interest using data received from the one or more low energy sensors, the one or more attributes including signals that are detected when the device is within a particular place of interest;

    determining to not activate a high energy sensor to determine a location of the device until the amount of time has elapsed; and

    determining that the location of the device is within the one place of interest based on the one or more attributes that define the one place of interest, the one place of interest having multiple locations that are not physically adjacent geographic locations, each of the multiple locations including a signal indicating the one place of interest as a same place of interest.

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