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System and method for tracking mass transit vehicles

  • US 8,560,230 B2
  • Filed: 10/15/2010
  • Issued: 10/15/2013
  • Est. Priority Date: 10/15/2010
  • Status: Expired due to Fees
First Claim
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1. A system for tracking mass transit vehicles, comprising:

  • a communication device configured formonitoring a Base Station IDentification (BS ID) of a base station registered with said communication device;

    identifying a change in said BS ID;

    determining a current location of said communication device;

    determining a previous location of said communication device;

    calculating a distance d between said current location and said previous location; and

    when the distance d is greater a location threshold, transmitting said current location, previous location, and distance; and

    a server configured forreceiving said current location, previous location, and distance d transmitted from said communication device;

    determining a subway exit closest to said current location;

    determining a distance dc between said current location and said subway exit;

    when said distance dc is less than an exit threshold, determining a subway entrance closest to said previous location;

    determining a distance dp between said previous location and said subway entrance;

    when said distance dp is less than an entrance threshold, determining a direction from said previous location to said current location; and

    identifying at least one subway train based on said entrance location, said exit location and said direction.

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