System and method for using a satellite positioning system to filter WLAN access points in a hybrid positioning system
First Claim
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1. A method of determining the location of a WLAN and satellite enabled device by using satellite measurements and satellite information to weigh WLAN access points (APs), the method comprising:
- identifying WLAN APs in range of the WLAN and satellite enabled device;
retrieving location estimates of the WLAN APs;
grouping the WLAN APs into clusters of at least one WLAN AP based on the location estimates of the WLAN APs;
obtaining satellite measurements and satellite information from at least two satellites to provide a plurality of possible satellite-based locations of the device; and
providing a weight for each cluster of WLAN APs based on a distance from the clusters of WLAN APs to the nearest location among the plurality of possible satellite-based locations of the device.
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Abstract
This disclosure describes a system and method for using a satellite positioning system to filter WLAN access points in a hybrid positioning system. In some embodiments, the method can include detecting WLAN APs in range of the WLAN and satellite enabled device, obtaining satellite measurements from at least two satellites to provide a plurality of possible satellite locations of the device, and providing a weight for each AP based on the distance from the WLAN APs to the possible satellite locations of the device.
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32 Claims
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1. A method of determining the location of a WLAN and satellite enabled device by using satellite measurements and satellite information to weigh WLAN access points (APs), the method comprising:
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identifying WLAN APs in range of the WLAN and satellite enabled device; retrieving location estimates of the WLAN APs; grouping the WLAN APs into clusters of at least one WLAN AP based on the location estimates of the WLAN APs; obtaining satellite measurements and satellite information from at least two satellites to provide a plurality of possible satellite-based locations of the device; and providing a weight for each cluster of WLAN APs based on a distance from the clusters of WLAN APs to the nearest location among the plurality of possible satellite-based locations of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for determining the location of a WLAN and satellite enabled device by using satellite measurements and satellite information to weigh WLAN access points (APs), the system comprising:
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a hybrid positioning module comprising; a WLAN positioning module for receiving information from one or more WLAN APs, for receiving location estimates of the one or more WLAN APs, and for grouping the WLAN APs into clusters of one or more WLAN APs based on the location estimates of the one or more WLAN APs; a satellite positioning module for providing a plurality of possible locations of the WLAN and satellite enabled device based on satellite measurements and satellite information from at least two different satellites; and logic contained in the hybrid positioning module for providing a weight for each cluster of WLAN APs based on the distance from the clusters of WLAN APs to the nearest location estimate among the plurality of possible satellite-based locations of the device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification