ISEP will contribute with a safe and secure handover mechanism between drone control stations BVLOS and with SDN 5G efficient resource management for D2X communications. In addition, by building upon its expertise in real-time communications, it will develop a fail-operational distributed data processing and communication architecture for safe and computational efficient drone flight control and navigation systems, using a point-to-point approach. The demonstrator of this technology will validate the communications architecture in a HiL (hardware in the loop) simulation environment, which will enable the validation and demonstration of the limits of the architecture in different operation scenarios, concerning its safety and timing specifications. The HiL simulation environment will be deployed, using real flight data, to enable the validation of the communication technology under that scenario.