Method and system for providing location information to mobile communication terminal on boundary area of mobile switching center

A method and a system for providing location information to a mobile communication terminal on a boundary area of an MSC are provided to determine position determination of the mobile communication terminal after correcting system information, included in pseudo noise of a base station managed by the other MSC, into system information of the other MSC, thereby improving a success rate of position determination of the mobile communication terminal requesting the position determination in the boundary area. A mobile communication terminal generates a PPM(Pilot Phase Measurement) message of IS-801 standards, and transmits the PPM message to a PDE(Position Determination Entity) by using a traffic between the mobile communication terminal and the PDE(S402). The PDE analyzes the PPM message, processes the PPM message into PPM data, and transmits the processed PPM data to a position determination server(S404). The position determination server requests a base station database and a neighbor list database to an operation parameter managing server(S406). By searching the neighbor list received from an operation parameter managing server, it is determined whether pseudo noise of the other MSC(Mobile Switching Center) is included in pseudo noise included in the PPM data(S408). If so, the position determination server corrects system information, included in the pseudo noise of the other MSC, into system information of the other MSC(S410). The position determination server generates a candidate pCellTM list in a pCellTM database based on the PPM data(S412). Based on a base station database, a pCellTM abnormally located a far in the candidate pCellTM list is deleted from the candidate pCellTM list(S414). A latitude and longitude of a pCellTM having optimum pattern matching with PPM data among plural pCellTMs of the candidate pCellTM list are transmitted to the PDE. After that, the PDE transmits the received latitude and longitude of the pCellTM to the mobile communication terminal(S416).