Reference oscillator management for wireless devices having position determination functionality
First Claim
1. A method for managing a reference oscillator within a wireless device, comprising:
- selecting reference oscillator parameters associated with a lowest reference oscillator error, wherein the selection is determined within the wireless device based upon processing a first frequency bias parameter determined based on a first wireless technology and a second frequency bias parameter determined based on a second wireless technology;
incrementing a confidence counter indicative of a confidence in the selected reference oscillator parameters at least partially in response to selecting the reference oscillator parameters;
acquiring a satellite based upon the selected reference oscillator parameters;
acquiring a satellite-based position fix;
determining the quality of the satellite-based position fix; and
updating the reference oscillator parameters in response to determining the quality of the satellite-based position fix.
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Accused Products
Abstract
A method and device for managing a reference oscillator within a wireless device is presented. The method includes selecting reference oscillator parameters associated with the lowest reference oscillator error, where the selection is based upon reference oscillator parameters derived using different technologies within a wireless device, acquiring a satellite based upon the selected reference parameters, determining the quality of the satellite-based position fix, and updating the reference oscillator parameters based upon the quality of the satellite-based position fix. The wireless device includes a wireless communications system, a satellite positioning system (SPS) receiver, a reference oscillator connected to the wireless communications system and SPS receiver, and a mobile controller connected to the reference oscillator, SPS, and wireless communications system, and a memory connected to the mobile controller, where the memory stores a reference oscillator parameter table and instructions causing the mobile controller to execute the aforementioned method.
16 Citations
89 Claims
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1. A method for managing a reference oscillator within a wireless device, comprising:
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selecting reference oscillator parameters associated with a lowest reference oscillator error, wherein the selection is determined within the wireless device based upon processing a first frequency bias parameter determined based on a first wireless technology and a second frequency bias parameter determined based on a second wireless technology; incrementing a confidence counter indicative of a confidence in the selected reference oscillator parameters at least partially in response to selecting the reference oscillator parameters; acquiring a satellite based upon the selected reference oscillator parameters; acquiring a satellite-based position fix; determining the quality of the satellite-based position fix; and updating the reference oscillator parameters in response to determining the quality of the satellite-based position fix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A wireless device having position determination functionality which manages a reference oscillator using a plurality of technologies, comprising:
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a wireless communications system; a satellite positioning system (SPS) receiver; a reference oscillator connected to the wireless communications system and SPS receiver; and a mobile controller connected to the reference oscillator, SPS, and wireless communications system; and a memory connected to the mobile controller, wherein the memory stores a reference oscillator parameter table and instructions causing the mobile controller to; select reference oscillator parameters associated with a lowest reference oscillator error, wherein the selection is determined within the wireless device based upon processing a first frequency bias parameter determined based on a first wireless technology and a second frequency bias parameter determined based on a second wireless technology, increment a confidence counter indicative of a confidence in the selected reference oscillator parameters at least partially in response to selecting the reference oscillator parameters; acquire a satellite based upon the selected reference oscillator parameters, acquire a satellite-based position fix, determine the quality of the satellite-based position fix, and update the reference parameters in response to determining the quality of the satellite-based position fix. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A wireless device having position determination functionality which manages a reference oscillator using a plurality of technologies, comprising:
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means for selecting reference oscillator parameters associated with a lowest reference oscillator error, wherein the selection is determined within the wireless device based upon processing a first frequency bias parameter determined based on a first wireless technology and a second frequency bias parameter determined based on a second wireless technology; means for incrementing a confidence counter indicative of a confidence in the selected reference oscillator parameters at least partially in response to selecting the reference oscillator parameters; means for acquiring a satellite based upon the selected reference oscillator parameters; means for acquiring a satellite-based position fix; means for determining the quality of the satellite-based position fix; and means for updating the reference oscillator parameters in response to determining the quality of the satellite-based position fix. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A non-transitory computer readable medium comprising instructions executable by a processor to:
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select reference oscillator parameters associated with a lowest reference oscillator error, wherein the selection is determined within the wireless device based upon processing a first frequency bias parameter determined based on a first wireless technology and a second frequency bias parameter determined based on a second wireless technology; increment a confidence counter indicative of a confidence in the selected reference oscillator parameters at least partially in response to selecting the reference oscillator parameters; acquire process an acquired satellite based upon the selected reference oscillator parameters; acquire a satellite-based position fix; determine the quality of the satellite-based position fix; and update the reference oscillator parameters in response to determining the quality of the satellite-based position fix. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
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Specification