Network based location measurement method and system using pcell database

Abstract

The present invention provides a network-based location measurement method using a pCELL database, comprising the steps of establishing a pCELL database in which a location measurement service target area is divided into lattices each having a predetermined size; continuously determining whether a request for location measurement occurs by a service subscriber; and, when the request for location measurement is generated, comparing fundamental information received from a mobile terminal with the pCELL database, determining a matching pCELL, and reporting the pCELL to the service requester. Furthermore, the present invention is constructed to periodically update a initially established pCELL database using the results of A-GPS-based location measurement and reflect variation in BTSs within a mobile communication network to the pCELL database, thereby always maintaining the optimal database. The present invention contributes to the activation of location-based services by resolving problems related to stability of location measurement due to relays, and the degrading of accuracy of location measurement in a network-based location measurement method in a mobile communication system. Furthermore, the present invention improves the service usage rate of indoor subscribers, occupying about 70% of overall location measurement attempts and service quality and minimizes the need for human and physical resources upon initial commercialization and optimization by resolving the problem due to the considerable amount of human and physical resources required upon initial commercialization and optimization. Therefore, it is possible to replace A-GPS-based location measurement with relatively small costs.