Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-09-09
2010-02-09
Maung, Nay A (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S067110, C455S423000, C455S513000, C342S360000, C342S465000, C370S254000, C370S332000, C370S336000
Reexamination Certificate
active
07660591
ABSTRACT:
A method and apparatus for determining a location of a transmitter includes taking a Received Signal Strength (RSSI) measurement at a plurality of locations. Next, a known transmit power is subtracted from each of the RSSI measurements to produce a Propagation Loss Vector (PLV) for each location of the plurality of locations. A model is developed from the PLVs, the model including a plurality of grid points. A candidate Transmit Power Vector (TPV) is produced by subtracting the PLV for a candidate location from the RSSI measurement. Each of the RSSI measurements are matched against each TPV of the model. Once all the grid points have been evaluated, the grid point having a best match is selected as a location of the transmitter.
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Krishnakumar Anjur Sundaresan
Krishnan Parameshwaran
Stiles Jay Munro
Avaya Inc.
Chapin IP Law LLC
Maung Nay A
Tran Paul P
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