Satellite positioning system receiver with reference oscillator circuit and methods therefor
First Claim
1. A method in a satellite position system enabled mobile wireless communication device having an oscillator, comprising:
- determining a change in cellular network based frequency error of the oscillator based on a difference between a cellular network based frequency error of the oscillator and a reference cellular network based frequency error of the oscillator;
determining a first frequency error of the oscillator by summing a reference satellite positioning system receiver based oscillator frequency error with the change in cellular network based frequency error of the oscillator.
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Abstract
A method in a location enabled mobile wireless receiver having an oscillator, including determining a change in cellular network based frequency error of the oscillator (250), based on a difference (230) between a cellular network based frequency error of the oscillator and a reference cellular network based frequency error (210) of the oscillator, determining a first frequency error of the oscillator by summing (250) a reference satellite positioning system receiver based oscillator frequency error (220) with the change in cellular network based frequency error of the oscillator.
96 Citations
27 Claims
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1. A method in a satellite position system enabled mobile wireless communication device having an oscillator, comprising:
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determining a change in cellular network based frequency error of the oscillator based on a difference between a cellular network based frequency error of the oscillator and a reference cellular network based frequency error of the oscillator;
determining a first frequency error of the oscillator by summing a reference satellite positioning system receiver based oscillator frequency error with the change in cellular network based frequency error of the oscillator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method in a location enabled mobile wireless receiver having an oscillator, comprising:
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determining a first frequency error of the oscillator;
determining a temperature based time rate of change of the frequency error of the oscillator;
determining a subsequent frequency error based on the temperature based time rate of change of frequency error and the first frequency error. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for compensating an oscillator in a satellite positioning system enabled mobile device having an RF receiver, comprising:
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determining a change in RF signal based frequency error of the oscillator based on a difference between an RF signal based frequency error of the oscillator and a reference RF signal based frequency error of the oscillator;
determining a first frequency error of the oscillator by summing a reference satellite positioning system receiver based oscillator frequency error with the change in RF signal based frequency error of the oscillator. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification