Metode de localizare ale abonaților mobili cu calcularea coordonatelor lor geografice

Abstract

This document contains a review of the current status of cellular location technology and nearfuture developments. Basic location techniques based on cellular system signals and satellite systems are presented. Cellular location techniques include methods based on cell identification, signal strength, angleof-arrival, time delay, correlation with database and signal pattern recognition. An overview of Global Positioning System is given along with description of differential and assisted GPS positioning methods. GSM standardisation on location methods and services is covered. It is concluded that the most applicable location methods are based on standard measurement reports that are continuously transmitted from the mobile station back to the network during a connection.