Practical Metropolitan-Scale Positioning for GSM Phones

  title={Practical Metropolitan-Scale Positioning for GSM Phones},
  author={Mike Y. Chen and Timothy Sohn and Dmitri Chmelev and Dirk H{\"a}hnel and Jeffrey Hightower and Jeff Hughes and Anthony LaMarca and Fred Potter and Ian E. Smith and Alex Varshavsky},
This paper examines the positioning accuracy of a GSM beaconbased location system in a metropolitan environment. We explore five factors effecting positioning accuracy: location algorithm choice, scan set size, simultaneous use of cells from different providers, training and testing on different devices, and calibration data density. We collected a 208-hour, 4350Km driving trace of three different GSM networks covering the Seattle metropolitan area. We show a median error of 94m in downtown and… CONTINUE READING
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