Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2004-05-19
2009-02-10
Bhattacharya, Sam (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456200, C455S456500
Reexamination Certificate
active
07489935
ABSTRACT:
A method of locating mobiles via a dynamic base station. The method includes transmitting a first wireless signal from the dynamic base station at a first time, and receiving the first wireless signal at the mobile. The method also includes transmitting a second wireless signal from the mobile in response to receiving the first wireless signal, and receiving the second wireless signal at the dynamic base station at a second time. The method also includes determining a time difference between the first time and the second time, determining an angle of arrival of the second wireless signal, and locating the mobile based on the angle of arrival and the time difference.
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Bhattacharya Sam
Michael & Best & Friedrich LLP
Michigan Technological University
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