Systems and methods for using a satellite positioning system to detect moved WLAN access points
DCFirst Claim
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1. A method of using a WLAN and satellite enabled device is to detect WLAN access points (APs) that have moved, the method comprising:
- detecting WLAN APs in range of the WLAN and satellite enabled device;
accessing a reference database to obtain a reference location of each WLAN AP;
obtaining satellite measurements from at least two satellites to provide a plurality of possible SPS location solutions of the device;
calculating a distance between each reference WLAN AP location and the possible SPS location solutions; and
if the distance between the reference WLAN AP location and the SPS location solutions is far, determining that the WLAN AP location in the reference database is not correct.
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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.
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Citations
17 Claims
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1. A method of using a WLAN and satellite enabled device is to detect WLAN access points (APs) that have moved, the method comprising:
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detecting WLAN APs in range of the WLAN and satellite enabled device; accessing a reference database to obtain a reference location of each WLAN AP; obtaining satellite measurements from at least two satellites to provide a plurality of possible SPS location solutions of the device; calculating a distance between each reference WLAN AP location and the possible SPS location solutions; and if the distance between the reference WLAN AP location and the SPS location solutions is far, determining that the WLAN AP location in the reference database is not correct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for determining the location of a WLAN and satellite enabled device to detect moved WLAN access points (APs) comprising:
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a hybrid positioning module comprising; a WLAN module for receiving information from one or more WLAN access points; a satellite positioning module for providing a plurality of possible device locations of the device based on satellite information from at least two different satellites; a reference database for storing reference locations for each WLAN AP; and logic contained in the positioning module for calculating a distance between each reference WLAN AP location and the possible SPS location solutions and if the distance between the reference WLAN AP location and the SPS location solutions is far, determining that the reference WLAN AP location is incorrect. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification