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Method providing positioning and navigation inside large buildings

  • US 8,259,692 B2
  • Filed: 07/11/2008
  • Issued: 09/04/2012
  • Est. Priority Date: 07/11/2008
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • scanning for available wireless local area network access points within a structure;

    detecting a signal from at least one available wireless local area network access point among the available wireless local area network access points; and

    retrieving location information of the at least one available wireless local area network access point, by querying the at least one available wireless local area network access point for locally configured data while in an unauthenticated state, via a query protocol, wherein the locally configured data comprises an 802.11u native query protocol AP location information definition extension indicative of the location information,wherein the scanning, the detecting, and the retrieving are performed by a mobile user device without associating with the at least one available wireless local area network access point.

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