Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-04-12
2011-04-12
Phuong, Dai A (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S432100, C455S433000, C455S436000, C455S456200, C455S456300
Reexamination Certificate
active
07925274
ABSTRACT:
A method and system for enhancing the accuracy and robustness of locations determined for a mobile wireless transceiver in a cellular telephone communications system integrating location-related information both from an assisted GPS device embedded in the mobile unit and from infrastructure-based facilities that extract signal characteristic data at networked base stations. Available supporting collateral information may be additionally evaluated in the location determinations to provide location estimates of enhanced robustness and accuracy.
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Anderson Robert J.
Maloney John E.
Ward Matthew L.
Phuong Dai A
TruePosition, Inc.
Woodcock & Washburn LLP
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