Positioning With Wireless Local Area Networks And WLAN-Aided Global Positioning Systems
First Claim
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1. A method comprising:
- determining a plurality of access points in a communications system;
determining a location of a wireless device in the communications system based at least in part on information from the plurality of access points, the information including received signal strength indicators; and
acquiring a satellite positioning system signal at the wireless device based at least in part on the 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.
9 Citations
22 Claims
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1. A method comprising:
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determining a plurality of access points in a communications system; determining a location of a wireless device in the communications system based at least in part on information from the plurality of access points, the information including received signal strength indicators; and acquiring a satellite positioning system signal at the wireless device based at least in part on the location. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless device for operating with a communications system, the wireless device to perform a location technique comprising:
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determining a plurality of access points in the communications system; determining a location of the wireless device based at least in part on information from the plurality of access points, the information including received signal strength indicators; and acquiring a satellite positioning system signal at the wireless device based at least in part on the location. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An wireless device comprising:
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means for determining a plurality of access points in a communications system; means for determining a location of the wireless device based at least in part on information from the plurality of access points, the information including received signal strength indicators; and means for acquiring a satellite positioning system signal at the wireless device based at least in part on the location. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A communications system including a plurality of access points, a wireless device, and a server, the wireless device and the server to perform a technique comprising:
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determining a plurality of access points using the wireless device; determining a location of the wireless device using the server based on information from the plurality of access points, the information including received signal strength indicators of at least some of the plurality of access points; and acquiring a satellite positioning system signal at the wireless device based at least in part on the location. - View Dependent Claims (20, 21, 22)
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Specification