TECHNIQUES FOR SELECTING SPS MEASUREMENTS TO USE IN DETERMINING A FINAL LOCATION ESTIMATE BASED ON A WLAN-BASED LOCATION ESTIMATE
First Claim
1. A method comprising:
- detecting, by a mobile device, one or more wireless local area network (WLAN) access points (APs);
determining a WLAN-based location estimate for the mobile device using a wireless local area network based positioning system (WLAN-PS), the WLAN-based location estimate based on the one or more detected WLAN APs and information maintained in a reference database associated with the one or more detected WLAN APs;
obtaining, by the mobile device, a plurality of satellite-based positioning system (SPS) measurements;
selecting a set of SPS measurements from the plurality of SPS measurements based on consistency of the set of SPS measurements with the WLAN based location estimate; and
using the selected set of SPS measurements in determining a final location estimate of the of the mobile device.
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Abstract
In one embodiment, a mobile device detects one or more wireless local area network (WLAN) access points (APs) and a WLAN-based location estimate is determined for the mobile device using a wireless local area network based positioning system (WLAN-PS). The WLAN-based location estimate is based on the one or more detected WLAN APs and information maintained in a reference database associated with the one or more detected WLAN APs. The mobile device also obtains a plurality of satellite-based positioning system (SPS) measurements. A selection of a set of SPS measurements is made from the plurality of SPS measurements based on consistency of the set of SPS measurements with the WLAN based location estimate. The selected set of SPS measurements is used in determining a final location estimate of the mobile device.
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Citations
20 Claims
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1. A method comprising:
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detecting, by a mobile device, one or more wireless local area network (WLAN) access points (APs); determining a WLAN-based location estimate for the mobile device using a wireless local area network based positioning system (WLAN-PS), the WLAN-based location estimate based on the one or more detected WLAN APs and information maintained in a reference database associated with the one or more detected WLAN APs; obtaining, by the mobile device, a plurality of satellite-based positioning system (SPS) measurements; selecting a set of SPS measurements from the plurality of SPS measurements based on consistency of the set of SPS measurements with the WLAN based location estimate; and using the selected set of SPS measurements in determining a final location estimate of the of the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a processor; positioning system software configured to be executed on the processor, the software including; wireless local area network based positioning system (WLAN-PS) software configured to determine a WLAN-based location estimate for a mobile device, the WLAN-based location estimate based on one or more WLAN APs detected by the mobile device and information maintained in a reference database associated with the one or more detected WLAN APs; and satellite-based positioning system (SPS) software configured to select a set of SPS measurements from a plurality of SPS measurements based on consistency of the set of SPS measurements with the WLAN based location estimate, wherein the selected set of SPS measurements is used by the positioning system software to determine a final location estimate of the mobile device. - View Dependent Claims (11, 12, 13, 14, 15)
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16. Software encoded in a non-transitory computer readable medium, the software when executed on one or more processors operable to:
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determine one or more wireless local area network (WLAN) access points (APs) that are in range of a mobile device; obtain a plurality of satellite-based positioning system (SPS) measurements; determine two or more sets of SPS measurements from the plurality of SPS measurements; select a set of SPS measurements from the plurality of SPS measurements based on consistency of the set of SPS measurements with the one or more wireless local area network (WLAN) access points (APs) that are in range of a mobile device; and use SPS measurements of the selected set of SPS measurements in determining a final location estimate of the of the mobile device, while excluding SPS measurements from use that are only members of a non-selected set of SPS measurements. - View Dependent Claims (17, 18, 19, 20)
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Specification