System and method for wireless location coverage and prediction
AssigneeTechnocom Corporation
InventorsMasoud Motamedi, Robert Blakely, Khaled Dessouky, Mario Proietti
Life of this patent
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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.
Claims30
A method for analyzing performance of a wireless location system comprising the steps of:
- storing data related to location equipment, wireless infrastructure, handsets, terrain map, and morphology map;
- generating a site radial file for predicting path loss and predicting time/angle error based on the stored terrain and morphology maps;
- computing a multi-site forward and a multi-site reverse link signal strength map for determining coverage of the location system;
- generating a multi-site margin map and a multi-site delay/angle error map from the computed multi-site forward and reverse link signal strength map and the stored data;
- and
- generating a location error estimate map for the wireless location system from covariance at each point in the margin map and the multi-site delay/angle error map.
A system for performance analysis of a location system comprising:
- means for generating a radial model and a radial map including a plurality of radial paths for a site from a stored raster map;
- means for selecting a propagation model from a stored plurality of propagation models for predicting a path loss along each radial path;
- at each point along a radial path, means for predicting accumulated angular errors and time delay errors;
- and
- means for generating an error estimate from the path loss and the accumulated angular errors and time delay errors due to terrain and morphology.
Dependencies are inferred from the claim text.