Positioning with wireless local area networks and WLAN-aided global positioning systems
First Claim
Patent Images
1. A wireless device comprising:
- a wireless local area network (WLAN) baseband configured to;
identify a plurality of access points in a communication system;
determine received signal strength indicator information of the plurality of access points; and
communicate with a server to determine location information of at least one access point of the plurality of access points; and
a global positioning system (GPS) baseband configured to;
determine a location of the wireless device based at least in part on the received signal strength indicator information and the location information of the at least one access point; and
acquire a satellite positioning system signal based on the determined location.
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Accused Products
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
15 Claims
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1. A wireless device comprising:
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a wireless local area network (WLAN) baseband configured to; identify a plurality of access points in a communication system; determine received signal strength indicator information of the plurality of access points; and communicate with a server to determine location information of at least one access point of the plurality of access points; and a global positioning system (GPS) baseband configured to; determine a location of the wireless device based at least in part on the received signal strength indicator information and the location information of the at least one access point; and acquire a satellite positioning system signal based on the determined location. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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identifying, at a wireless device, a plurality of access points in a communication system; determining received signal strength indicator information of the plurality of access points; communicating with a server to determine location information of at least one access point of the plurality of access points; determining a location of the wireless device based at least in part on the received signal strength indicator information and the location information of the at least one access point; and acquiring a satellite positioning system signal at the wireless device based at least in part on the determined location. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless device comprising:
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a wireless local area network (WLAN) baseband; and a global positioning system (GPS) baseband, the wireless device configured to; identify a plurality of access points in a communication system; determine received signal strength indicator information of the plurality of access points; communicate with a server to determine location information of at least one access point of the plurality of access points; determine a location of the wireless device based at least in part on the received signal strength indicator information and the location information of the at least one access point; and acquire a satellite positioning system signal based on the determined location. - View Dependent Claims (12, 13, 14, 15)
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Specification