System and method to collect and modify calibration data
First Claim
1. A method for generating a calibration database, comprising:
- receiving at a wireless device an attribute of a signal transmitted by a base station to a mobile station in a region;
wirelessly transmitting from said wireless device said attribute to a controller unit;
obtaining location data at a plurality of geographic locations situated within said region, wherein said location data for any one of said plural geographic locations is determined using said wireless device;
providing a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region;
determining a first point and a second point of said plural points that are in proximity to a first one of said plural geographic locations; and
interpolating between said first and second points to thereby determine a third point and entering said third point in said calibration database, and associating the location data for the first one of said plural geographic locations determined by said wireless device with the third point.
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Accused Products
Abstract
A system and method modifies calibration data used to geo-locate a mobile station. Calibration data measured via a calibration data collection device may contain errors due to the physical limitations of the collection device and/or the collection process. Any data collection device may produce some degree of signal degradation or drop-out. Dead reckoning provides a remedy for signal drop-out, however, it often produces data results that may be unsatisfactory to perform an accurate location estimate. To ensure the integrity of the collected calibration data, a data modification and/or data replacement algorithm may be implemented to enhance the accuracy of the collected data. In addition, current collection procedures used to generate a calibration database may be laborious, time-consuming and expensive. Simplifying the test and measurement equipment needed, and the procedures for obtaining calibration data may save time and expenses.
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Citations
24 Claims
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1. A method for generating a calibration database, comprising:
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receiving at a wireless device an attribute of a signal transmitted by a base station to a mobile station in a region; wirelessly transmitting from said wireless device said attribute to a controller unit; obtaining location data at a plurality of geographic locations situated within said region, wherein said location data for any one of said plural geographic locations is determined using said wireless device; providing a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; determining a first point and a second point of said plural points that are in proximity to a first one of said plural geographic locations; and interpolating between said first and second points to thereby determine a third point and entering said third point in said calibration database, and associating the location data for the first one of said plural geographic locations determined by said wireless device with the third point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for generating a calibration database, comprising:
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a first database containing location data obtained at a plurality of geographic locations situated within a region, said location data for any one of said plural geographic locations is determined using a wireless device and said wireless device receives an attribute of a signal transmitted by a base station to a mobile station in said region; a wireless device transmitter for transmitting from said wireless device said attribute to a controller unit; a location information database wherein said location database includes latitude and longitude information for each of a plurality of points within said region; circuitry for determining a first point and a second point of said plural points that are in proximity to a first one of said plural geographical locations; circuitry for interpolating between said first and second points to thereby determine a third point; and circuitry for entering said third point in said calibration database; and
,circuitry for associating the location data for the first one of said plural geographic locations determined by said wireless device with the third point. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification