WIRELESS COMMUNICATION DEVICE AND ASSOCIATED METHOD INCLUDING CONTROL OF POSITIONING-SYSTEM RECEIVER AND SHARED OSCILLATOR
4 Assignments
0 Petitions
Accused Products
Abstract
The wireless communication device includes a wireless communication transceiver to generate an oscillator control signal and an activation signal, a positioning-system receiver (e.g. a GPS receiver) to process received positioning signals, and a shared oscillator (e.g. a temperature compensated and voltage controlled crystal oscillator TCVCXO) responsive to the oscillator control signal and to generate a reference frequency signal for the wireless communication transceiver and the positioning-system receiver. The positioning-system receiver may control processing of the received positioning signals based upon the activation signal to reduce a noise contribution (e.g. phase noise) due to frequency control of the shared oscillator based upon the oscillator control signal. The activation signal may indicate that the oscillator control signal is being varied to provide frequency control or adjustment of the shared oscillator.
12 Citations
43 Claims
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1-21. -21. (canceled)
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22. A mobile wireless communication device comprising:
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a cellular transceiver configured to generate an oscillator control signal and an activation signal; a global positioning system (GPS) receiver; and a shared oscillator configured to generate a reference frequency signal for the cellular transceiver and the GPS receiver based upon the oscillator control signal; the GPS receiver configured to control coherent correlation of received positioning signals based upon the activation signal. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A mobile wireless communication device comprising:
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a wireless transceiver configured to generate an oscillator control signal and an activation signal, the activation signal indicating that the oscillator control signal is being varied to provide frequency control; a global positioning system (GPS) receiver; and a shared voltage controlled crystal oscillator (VCXO) configured to generate a reference frequency signal for the wireless transceiver and the GPS receiver; the GPS receiver configured to control coherent correlation of received positioning signals based upon the activation signal. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method of operating a mobile wireless communication device comprising:
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generating an oscillator control signal and an activation signal with a cellular transceiver; processing received positioning signals with a global positioning system (GPS) receiver; generating a reference frequency signal for the cellular transceiver and the GPS receiver with a shared oscillator responsive to the oscillator control signal; and controlling coherent correlation of the received positioning signals based upon the activation signal. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification