System and method for wireless location performance prediction
First Claim
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1. A method for analyzing performance of a wireless location system comprising:
- storing data related to location equipment, wireless infrastructure, handsets and terrain;
generating a site file for predicting path loss and predicting time/angle error based on the stored terrain data;
computing multi-site forward and multi-site reverse link signal strengths for determining coverage of the location system;
generating multi-site margin data and multi-site delay/angle error data from the computed multi-site forward and reverse link signal strengths and the stored data; and
generating location error estimates for the wireless location system from the predicted delay/angle error data.
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Abstract
The software of the present invention predicts the performance of a wireless location system, including its accuracy, availability, and coverage. The tool can determine if the deployed location sensors meet, exceed, or fall short of providing the expected coverage and performance. The tool allows the location system designer to eliminate redundancies if not all sensors are needed and propose additional sites where coverage holes are present. The software tool includes a graphical user interface for ease of use.
84 Citations
20 Claims
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1. A method for analyzing performance of a wireless location system comprising:
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storing data related to location equipment, wireless infrastructure, handsets and terrain; generating a site file for predicting path loss and predicting time/angle error based on the stored terrain data; computing multi-site forward and multi-site reverse link signal strengths for determining coverage of the location system; generating multi-site margin data and multi-site delay/angle error data from the computed multi-site forward and reverse link signal strengths and the stored data; and generating location error estimates for the wireless location system from the predicted delay/angle error data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for performance analysis of a location system comprising:
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means for storing data related to location equipment, wireless infrastructure, handsets and terrain; means for generating a site file for predicting path loss and predicting time/angle error based on the stored terrain data; means for computing multi-site forward and multi-site reverse link signal strengths for determining coverage, of the location system; means for generating multi-sire margin data and multi-sire delay/angle error data from the computed multi-site forward and reverse link signal strengths and the stored data; and means for generating location error estimates for the wireless location system from the predicted delay/angle error data. - View Dependent Claims (17, 18, 19)
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20. A method for analyzing performance of a wireless location system comprising:
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storing data related to location equipment, wireless infrastructure, handsets and terrain; generating a radial model and a radial map including a plurality of radial paths for a site from stored data; selecting a propagation model from a stored plurality of propagation models for predicting a path loss along each radial path; predicting accumulated angular errors and time delay errors at each point along a radial path in the radial map; and generating an error estimate from the accumulated angular errors and the time delay errors due to terrain and morphology.
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Specification