4G Deployment in Berlin and London underground
The Berlin U-Bahn now has a comprehensive 4G mobile network, ensuring high-speed internet access across all nine lines and 175 stations. This project, a collaboration between O2 Telefonica, Vodafone, and Deutsche Telekom, involved laying over 1,000 km of fibre optics and installing numerous antennas and base stations, paving the way for future 5G integration.
Similarly, London's Elizabeth Line now features high-speed 4G and 5G connectivity in its tunnels, covering the section from Royal Oak to Liverpool Street, with plans to extend further. This rollout, a collaboration between TfL and Boldyn Networks, aims to improve passenger experience and safety by the end of summer 2024.