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Floor determination for a wireless device

  • US 7,894,412 B2
  • Filed: 09/07/2007
  • Issued: 02/22/2011
  • Est. Priority Date: 09/07/2007
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a communication interface configured to acquire received signal strength indicator (RSSI) data for a wireless device from a plurality of access points on a plurality of floors; and

    floor determination logic in data communication with the communication interface, the floor determination logic is configured to determine a floor that the wireless device is located on by analyzing the RSSI data acquired by the communication interface;

    wherein the floor determination logic is configured to calculate an adjusted RSSI from the acquired RSSI data for the wireless device received by every access point by one of a group consisting of adding and subtracting a predetermined value from the RSSI data acquired from each access point;

    wherein the floor determination logic is configured to sum the adjusted RSSI for each floor; and

    wherein the floor determination logic is configured to select the floor with the highest sum.

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