Exploring GNSS Positioning Accuracy for Emergency Calls in Mobile Devices: An Empirical Study using a GNSS Simulator with A-GPS Technology

This research delves into the precision of Global Navigation Satellite System (GNSS) positioning through empirical investigations conducted with a GNSS simulator Spirent GSS7000. The study aims to analyze different factors influencing GNSS [1], particularly for applications like Assisted GPS (A-GPS) [2] used by 4G and 5G networks during emergency calls. Factors such as atmospheric conditions, satellite visibility, signal interference, receiver capabilities, satellite constellation identification and satellite power levels were considered. Using a simulator, it is possible to validate real-world scenarios experienced by mobile devices (UE) during emergency calls. This includes latitude, longitude, altitude, and speed data for locating individuals in emergency scenarios.