Positioning With Wireless Local Area Networks And WLAN-Aided Global Positioning Systems
First Claim
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1. A method comprising:
- determining a location of a wireless device in a communications system based on location information received from one or more access points, wherein the location information includes a position associated with at least one of the one or more access points; and
acquiring a satellite positioning system signal at the wireless device based at least in part on the determined location.
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Abstract
Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the WLAN. Before a wireless device disassociates with the access point, the WLAN can periodically provide time, location, and decoded GPS data to the wireless device. In this manner, the wireless device can significantly reduce the time to acquire the necessary GPS satellite data (i.e. on the order of seconds instead of minutes) to determine its coordinate position.
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Citations
33 Claims
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1. A method comprising:
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determining a location of a wireless device in a communications system based on location information received from one or more access points, wherein the location information includes a position associated with at least one of the one or more access points; and acquiring a satellite positioning system signal at the wireless device based at least in part on the determined location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless device comprising:
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a wireless local area network (WLAN) baseband for communicating with one or more access points, wherein the WLAN baseband is configured to receive location information from at least one of the one or more access points, and determine a location of the wireless device based on the location information; and a global positioning system (GPS) baseband configured to acquire a satellite positioning system signal based on the determined location of the wireless device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A wireless device comprising:
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means for determining a location of a wireless device in a communications system based on location information received from one or more access points, wherein the location information includes a position associated with at least one of the one or more access points; and means for acquiring a satellite positioning system signal at the wireless device based at least in part on the determined location. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification