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Techniques for caching Wi-Fi access point data on a mobile client device using tiles

  • US 9,888,345 B2
  • Filed: 07/11/2016
  • Issued: 02/06/2018
  • Est. Priority Date: 10/29/2004
  • Status: Active Grant
First Claim
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1. A method of caching Wi-Fi access point data on a mobile client device, comprising:

  • identifying one or more Wi-Fi access points in range of the mobile client device based on signals received by a Wi-Fi radio of the mobile client device;

    estimating a location of a mobile client device utilizing the identified one or more Wi-Fi access points and Wi-Fi access point data of one or more Wi-Fi positioning system (WPS) tiles in a WPS tile store on the mobile client device;

    based on the estimated location, determining the mobile client device is within a threshold distance of a boundary of the one or more WPS tiles present in the WPS tile store on the mobile client device;

    requesting, by WPS client software executing on the mobile client device, one or more new WPS tiles from a reference database of a remote server;

    receiving the one or more new WPS tiles from the remote server;

    caching, by the WPS client software, the one or more new WPS tiles in the WPS tile store on the mobile client device;

    estimating one or more further locations of the mobile client device based on one or more new Wi-Fi access points now in range of the mobile client device and Wi-Fi access point data of the one or more new WPS cached tiles now in the WPS tile store on the mobile client device; and

    utilizing at least the estimated location or the one or more further estimated locations by a location-based application to provide a service to a user of the mobile client device.

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