System and method for tracking mass transit vehicles
First Claim
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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Abstract
Disclosed is a system and method for tracking mass transit vehicles, including monitoring a Base Station IDentification (BS ID) of a base station registered with a 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; 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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Citations
20 Claims
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1. A system for tracking mass transit vehicles, comprising:
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a communication device configured for monitoring 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 for receiving 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17)
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11. A method for tracking mass transit vehicles, comprising:
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monitoring a Base Station IDentification (BS ID) of a base station registered with a 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; 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. - View Dependent Claims (12, 13, 14, 15, 18, 19, 20)
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Specification