Method and apparatus for location determination in a wireless assisted hybrid positioning system
First Claim
1. A method to determine a position of a mobile device in a positioning system, the method comprising:
- computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter, the first geometric relationship being linearly independent from an altitude of the mobile device and a second geometric relationship based on range information measured with respect to the navigational transmitter.
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Accused Products
Abstract
Methods and apparatuses for location determination in wireless assisted positioning systems. In one aspect of the disclosed method and apparatus, a method to determine a position of a mobile device in a positioning system includes: computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter (e.g., a basestation, a pseudolite, or a Satellite Positioning System (SPS) satellite). The first geometric relationship is linearly independent from the altitude of the mobile device (e.g., obtained from an altitude aiding) and a second geometric relationship based on range information (e.g., a range from the mobile device to the navigational transmitter, a pseudorange, an arrival time, or a round trip time) measured with respect to the navigational transmitter. In another embodiment of the disclosed method and apparatus, the method to determine a position of a mobile device in a positioning system includes: determining an estimated clock bias from a strength indicator of a signal transmitted from a navigational transmitter to the mobile device.
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Citations
63 Claims
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1. A method to determine a position of a mobile device in a positioning system, the method comprising:
computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter, the first geometric relationship being linearly independent from an altitude of the mobile device and a second geometric relationship based on range information measured with respect to the navigational transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method to determine a position of a mobile device in a positioning system, the method comprising:
determining an estimated clock bias from a strength indicator of a signal transmitted from a navigational transmitter to the mobile device. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A machine readable media containing executable computer program instructions which when executed by a digital processing system cause said system to perform a method to determine a position of a mobile device in a positioning system, the method comprising:
computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter, the first geometric relationship being linearly independent from an altitude of the mobile device and a second geometric relationship based on range information measured with respect to the navigational transmitter. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 44, 45, 46)
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36. A machine readable media containing executable computer program instructions which when executed by a digital processing system cause said system to perform a method to determine a position of a mobile device in a positioning system, the method comprising:
determining an estimated clock bias from a strength indicator of a signal transmitted from a navigational transmitter to the mobile device. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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43. A digital processing system to determine a position of a mobile device in a positioning system, the processing system comprising:
means for computing a second estimated position of a mobile device using a first assumed geometric relationship for a location of the mobile device in relation to a navigational transmitter, the first geometric relationship being linearly independent from an altitude of the mobile device and a second geometric relationship based on range information measured with respect to the navigational transmitter. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A digital processing system to determine a position of a mobile device in a positioning system, the processing system comprising:
means for determining an estimated clock bias from a strength indicator of a signal transmitted from a navigational transmitter to the mobile device. - View Dependent Claims (58, 59, 60, 61, 62, 63)
Specification