Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-06-09
2009-10-13
Trinh, Sonny (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456600, C455S414200
Reexamination Certificate
active
07603128
ABSTRACT:
A system for providing coordinate-based location information may include first, second and third wireless location transmitters. The wireless location transmitters may be located at fixed positions within an enclosure, such as a building. The wireless locations transmitters may each be programmed with a respective coordinate-based location, which the wireless location transmitters can in turn wirelessly transmit to a wireless device. The wireless device can then use the three respective coordinated-based locations of the wireless location transmitters to determine a coordinate-based location for the wireless device.
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Delker Jason R.
Everson John M.
Jones Bryce A.
Sprint Spectrum L.P.
Trinh Sonny
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