Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2010-05-18
2011-11-29
Nguyen, David Q (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S414200, C455S456300, C455S456200, C455S457000
Reexamination Certificate
active
08068855
ABSTRACT:
A method for determining the location of a mobile unit (MU) in a wireless communication system and presenting it to a remote party. The location of a remote MU is determined by comparing a snapshot of a predefined portion of the radio-frequency (RF) spectrum taken by the MU to a reference database containing multiple snapshots taken at various locations. The result of the comparison is used to determine if the MU is at a specific location. The comparison may be made in the MU, or at some other location situated remotely from the MU. In the latter case, sufficient information regarding the captured fingerprint is transmitted from the MU to the remote location. The database may be pre-compiled or generated on-line.
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Dressler Robert Morris
Spain, Jr. David Stevenson
DeMont & Breyer LLC
Nguyen David Q
Polaris Wireless, Inc.
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