Patent ID: 8068852

Claim:
A method for detecting a location of a mobile station (MS) by using a pilot strength measurement message (PSMM) in a mobile communication system comprising a Radio Access Network (RAN) containing a base station transceiver and a base station controller; a Mobile Switching Center (MSC); and a position determination entity (PDE), the method comprising the steps of: (a) transmitting, by using the position determination entity, an ISPOS request (Inter_System_Position_Request) message to the Mobile Switching Center; (b) transmitting, by using the Mobile Switching Center, an RMP request (Radio_Measurement_for_Position_Request) message to the base station controller; (c) receiving, by using the base station controller, the RMP request message from the Mobile Switching Center, and determining P_Rev (Protocol Revision) of the mobile station; (d) transmitting a PPMRO (Periodic_Pilot_Measurement_Request_Order) message to the mobile station when the P_Rev has a value equal to or greater than 6 at step (c) and transmitting a PMRO (Pilot_Measurement_Request_Order) message to the mobile station when the P_Rev has a value equal to or less than 5 at step (c); (e) using the base station controller and the PPMRO message or the PMRO message to collect the PSMM information from the mobile station; (f) transmitting, by using the base station controller, an RMP response (Radio_Measurements_for_Position_Response) message including the PSMM information to the Mobile Switching Center; (g) transmitting, by using the Mobile Switching Center, the PSMM information to the position determination entity through an ISPOS request (Inter_System_Position_Request) message; and (h) using the position determination entity to detect the location of the mobile station from the collected PSMM information.