Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-06-07
2005-06-07
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S574000, C455S522000, C455S422100, C455S552100, C370S320000, C370S335000, C370S337000, C370S342000
Reexamination Certificate
active
06904282
ABSTRACT:
In a mobile station having an acquired wireless communications system, the mobile station performs preliminary searches for more desirable wireless communications systems in between paging channel and quick paging channel assigned slots, while successfully monitoring the mobile station's assigned slots. The mobile station then analyzes the preliminary search results and attempts to acquire the more desirable wireless communications systems that meets preliminary search criteria. The mobile station includes a communications transceiver that facilitates wireless communications with a local base station and processing circuitry adapted to control a slotted operation mode of the mobile station. The processing circuitry is adapted to instruct the communications transceiver to listen for incoming messages from the acquired communications system during slot modes and listen for candidate communications systems during slot-off modes. The preliminary searches include performing tests on the signal received on a candidate communications system channel. The tests may include measuring the signal strength, calculating the ratio Ec/Ioand demodulating a synchronization signal.
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Greenhaus Bruce W.
Kordich Donald C.
Le Danh C
Qualcomm Incorporated
Trost William
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