Patent ID: 7546201
Filing Date: 2009-06-09
Classification: G01C,G07B,G08G

Abstract:
1. A method for obtaining traffic information of a highway using billing information of a mobile terminal by extracting unique information of the terminal from call data when the terminal entering the highway attempts a telephone call, tracking a moving path and time between base stations and producing an average speed per hour, the method comprising the steps of: (a) when sample objects enters a section, parallel to a local road, containing a base station providing a communication service to an area of a tollgate, increasing the number of sample objects to a predetermined multiple of the reference number of objects; (b) tracking moving paths and moving time periods of the sample objects extracted at the step (a) between the base stations and producing an average speed per hour between the base stations; (c) when a speed difference in an area of the base station providing the communication service to the area of the tollgate is reduced by a predetermined speed or more, removing a corresponding sample object; and (d) maintaining the number of sample objects as the reference number of objects, in an area of a base station out of the area of the tollgate in the section parallel to the local road.