Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-05-08
2009-06-23
Appiah, Charles N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456500, C455S456300
Reexamination Certificate
active
07551929
ABSTRACT:
A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.
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Alizadeh-Shabdiz Farshid
Morgan Edward J.
Pahlavan Kaveh
Appiah Charles N
Doan Kiet
Skyhook Wireless, Inc.
Wilmer Cutler Pickering Hale & Dorr LLP
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