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ESTIMATION OF SPEED AND DIRECTION OF TRAVEL IN A WLAN POSITIONING SYSTEM

  • US 20120100872A1
  • Filed: 12/30/2011
  • Published: 04/26/2012
  • Est. Priority Date: 05/08/2006
  • Status: Active Grant
First Claim
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1. A method of inferring that a Wi-Fi enabled device is substantially stationary, comprising:

  • receiving information from signals transmitted by at least one Wi-Fi access point and received by a Wi-Fi enabled device, the receiving occurring over time;

    measuring at least one amount of time during which the Wi-Fi enabled device detects signals transmitted by the at least one Wi-Fi access point; and

    inferring that the Wi-Fi enabled device is substantially stationary based on the at least one amount of time during which signals from the at least one Wi-Fi access points were detected.

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