Positioning With Wireless Local Area Networks And WLAN-Aided Global Positioning Systems
First Claim
1. A method of determining a new common position of a first device and a second device, the first and second devices having wireless networking capability, the method including:
- exchanging information between the first device and the second device in an ad hoc communication mode, wherein the exchanged information includes last positions of the first and second devices and update times associated with the last positions.
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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
4 Claims
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1. A method of determining a new common position of a first device and a second device, the first and second devices having wireless networking capability, the method including:
exchanging information between the first device and the second device in an ad hoc communication mode, wherein the exchanged information includes last positions of the first and second devices and update times associated with the last positions. - View Dependent Claims (2)
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3. A wireless local area network (WLAN) system for facilitating providing a global positioning system (GPS) position of a client, the system including:
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analog means for associating with the client, the analog means including a frequency synthesizer receiving one of a first signal associated with WLAN baseband operation and a second signal associated with GPS baseband operation; an analog to digital conversion means; and digital means for providing the WLAN baseband operation and the GPS baseband operation. - View Dependent Claims (4)
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Specification