Location tracing system for mobile telecommunication terminal and method thereof

A method for tracing a location of mobile telecommunication terminals comprising:

• dividing a region around base stations into a predetermined number of areas;
• calculating distances between a mobile terminal located in the divided areas and each base station, and setting/storing the distance values and location information by the distance values in a table of a cell controller in advance;
• receiving discrimination information transmitted from the mobile terminal and calculating distances between the mobile terminal and the respective base stations based on delayed time for receiving the discrimination information;
• transmitting the calculated distance values to the cell controller;
• and
• discriminating location information corresponding to the distance values between the mobile terminal and the respective base stations transmitted from the respective base stations through the table of the cell controller, said location information corresponding to a location of the mobile terminal.

A method for tracing a location of mobile telecommunication terminals comprising:

• when a mobile terminal is located at a portion other than a center portion of a predetermined region, dividing the predetermined region into detail areas, calculating distances between the mobile terminal located and each of a plurality of base stations, and setting/storing the distance values and location information according to the distance values in a table in advance;
• receiving discrimination information transmitted from the mobile terminal and calculating distances between the mobile terminal and the respective base stations based on delayed time for receiving the discrimination information;
• transmitting the calculated distance values to the cell controller;
• and
• comparing the distance values with the distance values stored in the table, determining a distance value of the table consistent with the distance values, and selecting location information corresponding to the distance value, a said location information corresponding to a location of the mobile terminal.

A method for tracing a location of mobile telecommunication terminals comprising:

• when a mobile terminal is located at portion other than a center portion of a predetermined region, dividing the predetermined region into several areas, calculating distances between the mobile terminal and the base stations, and setting/storing the distance values and location information according to the distance values in a table of a cell controller in advance,
• receiving discrimination information transmitted from the mobile terminal and calculating distances between the mobile telecommunication terminal and the respective base stations based on delayed time for receiving the discrimination information;
• transmitting the calculated distance values to the cell controller;
• and
• comparing the distance values with the distance values stored in the table, determining a distance value of the table which is similar to the distance values, and selecting location information corresponding to the distance value, said location information corresponding to a location of the mobile terminal.