Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-05-15
2007-05-15
Le, Danh Cong (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S439000, C455S438000, C455S436000, C370S331000, C370S332000
Reexamination Certificate
active
11075983
ABSTRACT:
Disclosed is a cellular network handoff decision mechanism which comprising the steps of: determining a sampling interval using a carrier wavelength; determining a local averaging interval that is larger than the sampling interval; determining a handoff decision interval that is larger than the local averaging interval; selecting at least two base stations from a multitude of base stations having a pilot signal from a reference cellular network using a selection criterion; determining a received signal strength from the pilot signal strength for each of the selected base stations once during every sampling interval; calculating a local average signal strength value using each of the received signal strengths once during every local averaging interval; determining an assignment region in which the local average signal strength value lies using a hysteresis range; and calculating a handoff decision once during every handoff decision interval using a handoff calculation.
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Leu Alexe E.
Mark Brian
George Mason Intellectual Properties, Inc.
Grossman David G.
Le Danh Cong
Yee David
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