CO-OPERATIVE GEOLOCATION
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United States of America Patent
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Issued Date -
Dec 1, 2011
app pub date -
Nov 24, 2010
filing date -
Nov 25, 2009
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for extending the coverage of geolocation to indoor locations through cooperative geolocation. The method includes establishing an ad-hoc wireless network comprising a plurality of devices including a first device. The method includes receiving, at the first device, position information from the plurality of devices and determining a physical location of the first device based on the received position information. In an embodiment, the position information is transmitted in response to a request by the first device. In an embodiment, the position information may include a time of arrival of the request received by each of the plurality of devices; and the time of arrival may be associated with a GNSS time. In an embodiment, the ad-hoc wireless network may be a Wi-Fi network, which is associated with one of the IEEE 802.11 standards.
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