Systems and methods for using a satellite positioning system to detect moved wlan access points
AssigneeSkyhook Wireless, Inc.
InventorFarshid ALIZADEH-SHABDIZ
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Abstract
The disclosed subject matter generally relates to hybrid positioning systems and methods and, more specifically, systems and methods of detecting moved WLAN assess points using a wireless local area network based positioning system (WLAN-PS) and a satellite-based positioning system (SPS) with at least two satellites measurement.
Claims10
A method of using a Wireless Local Area Network (WLAN) and satellite enabled device to infer that a reference location associated with a detected WLAN access point (AP) is not the present location of the AP, the method comprising:
- identifying at least one WLAN AP detected by the WLAN and satellite enabled device;
- accessing a reference database to obtain a reference location associated with the at least one WLAN AP and a quality measurement associated with the reference location;
- receiving a position estimate for the device from a Satellite Positioning System (SPS);
- estimating a distance between the reference location associated with the WLAN AP and the position estimate of the device from the SPS;
- and
- inferring that the reference location associated with the WLAN AP is not the present location of the WLAN AP based on (i) the distance between the reference location associated with the WLAN AP and the position estimate of the device from the SPS and (ii) the quality measurement associated with the reference location.
A system for using a Wireless Local Area Network (WLAN) and satellite enabled device to infer that a reference location associated with a detected WLAN access point (AP) is not the present location of the AP, the system comprising:
- logic for identifying at least one WLAN AP detected by the WLAN and satellite enabled device;
- logic for accessing a reference database to obtain a reference location associated with the at least one WLAN AP and a quality measurement associated with the reference location;
- logic for providing a position estimate for the device from a Satellite Positioning System (SPS);
- logic for estimating a distance between the reference location associated with the WLAN AP and the position estimate of the device from the SPS;
- and
- logic for inferring that the reference location associated with the WLAN AP is not the present location of the WLAN AP based on (i) the distance between the reference location associated with the WLAN AP and the position estimate of the device from the SPS and (ii) the quality measurement associated with the reference location.
Dependencies are inferred from the claim text.