ENVIRONMENT-SPECIFIC MEASUREMENT WEIGHTING IN WIRELESS POSITIONING
First Claim
Patent Images
1. A method comprising:
- obtaining one or more measurements, at a mobile station, based at least in part on one or more signals received by the mobile station from one or more signal sources;
updating estimates of measurement errors associated with at least one of the one or more signal sources based, at least in part, on one or more historical measurements associated with the at least one of the one or more signal sources; and
estimating a location of the mobile station based, at least in part, on the one or more measurements and the updated estimates of measurement errors associated with the at least one of the one or more signal sources.
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Abstract
The subject matter disclosed herein relates to a system and method for estimating a location of a mobile station based, at least in part, on one or more measurements obtained from the mobile station based at least in part on one or more signals received by the mobile station from one or more signal sources. Such measurements may be combined based, at least in part, on estimates of measurement errors associated with the signal sources. In a particular implementation, such error estimates may be updated to account for changes in an operational environment.
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Citations
96 Claims
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1. A method comprising:
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obtaining one or more measurements, at a mobile station, based at least in part on one or more signals received by the mobile station from one or more signal sources; updating estimates of measurement errors associated with at least one of the one or more signal sources based, at least in part, on one or more historical measurements associated with the at least one of the one or more signal sources; and estimating a location of the mobile station based, at least in part, on the one or more measurements and the updated estimates of measurement errors associated with the at least one of the one or more signal sources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus comprising:
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a receiver to receive, from a mobile station, one or more measurements based at least in part on one or more signals received by the mobile station from one or more signal sources; one or more processing units programmed with instructions to; update estimates of measurement errors associated with at least one of the one or more signal sources based, at least in part, on one or more historical measurements associated with the at least one of the one or more signal sources; and estimate a location of the mobile station based, at least in part, on the one or more measurements and the updated estimates of measurement errors associated with the at least one of the one or more signal sources. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An article comprising:
- a storage medium comprising machine readable instructions stored thereon executable by one or more processing units to;
obtain one or more measurements, from a mobile station, based at least in part on one or more signals received by the mobile station from one or more signal sources; update estimates of measurement errors associated with at least one of the one or more signal sources based, at least in part, on one or more historical measurements associated with the at least one of the one or more signal sources; and estimate a location of the mobile station based, at least in part, on the one or more measurements and the updated estimates of measurement errors associated with the at least one of the one or more signal sources. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
- a storage medium comprising machine readable instructions stored thereon executable by one or more processing units to;
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44. An apparatus comprising:
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means for obtaining one or more measurements from a mobile station, wherein the one or more measurements are based at least in part on one or more signals received by the mobile station from one or more signal sources; means for updating estimates of measurement errors associated with at least one of the one or more signal sources based, at least in part, on one or more historical measurements associated with the at least one of the one or more signal sources; and means for estimating a location of the mobile station based, at least in part, on the one or more measurements and updated estimates of the measurement errors. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A method, comprising:
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communicating with a serving signal source providing wireless service to a mobile station within a serving sector; and acquiring one or more calibration error estimates associated with the serving signal source and one or more other signal sources, based at least in part on an identity of the serving signal source. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. A mobile station, comprising:
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a receiver to receive wireless service from a serving signal source; and a processing unit to initiate acquisition of one or more calibration error estimates associated with the serving signal source and one or more other signal sources, based at least in part on an identity of the serving signal source. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76, 77)
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78. An apparatus, comprising:
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means for communicating with a serving signal source providing wireless service to a mobile station within a service sector; and means for acquiring one or more calibration error estimates associated with the serving signal source and one or more other signal sources based at least in part on an identity of the serving signal source. - View Dependent Claims (79, 80, 81, 82, 83, 84, 85, 86)
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87. An article comprising:
- a storage medium having stored thereon instructions executable by a processing unit to;
communicate with a serving signal source providing wireless service to a mobile station within a service sector; and initiate acquisition of one or more calibration error estimates associated with the serving signal source and one or more other signal sources based at least in part on an identity of the serving signal source. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95, 96)
- a storage medium having stored thereon instructions executable by a processing unit to;
Specification