Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-10-31
2010-06-22
Pérez-Gutiérrez, Rafael (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404100, C455S404200, C455S456600, C342S118000, C342S126000, C342S139000, C342S140000
Reexamination Certificate
active
07742773
ABSTRACT:
A system and method are disclosed for determining a position of a wireless communication device. A method includes determining a respective (x,y) position of two wireless communication devices, determining a distance between the two wireless communication devices, and determining a relative elevational differential between the two wireless communication devices. The relative elevational differential is determined based on the determined (x,y) positions of the two wireless communication devices and the determined distance between the first and second wireless communication devices. The (x,y) positions may be determined using GPS receivers incorporated in the wireless communication devices. Determining the distance between the devices may be accomplished using RF ranging. The relative elevational differential may be derived using the Pythagorean theorem.
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patent
Doerre Jeremy C.
Nobile Daniel
Perez-Gutierrez Rafael
Terahop Networks, Inc.
Tillman Chad D.
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