Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-06-12
2007-06-12
Trinh, Sonny (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S422100, C455S456100
Reexamination Certificate
active
10322057
ABSTRACT:
A mechanism is provided for detecting when a wireless device is entering a quiet zone. An out-of-range condition is created in an entryway to a quiet zone. When a wireless device is in a transition zone, the device transmits a re-scan message with a unit identification in an attempt to reestablish communication with the communication tower. A re-scan receiver is provided in the entryway to receive re-scan messages and notify a mobile telephone switching office that the device is entering a quiet zone. The switching office then sends a ring type modifier property to the device when the device leaves the transition zone and reestablishes communications with the communication tower.
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Curtis Bryce Allen
Hsu Jimmy Ming-Der
Pierre-Louis Marc-Arthur
LaBaw Jeffrey S.
Skarsten James O.
Trinh Sonny
Yee Duke W.
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