“…According to [127], one of the first proposals for a UTM construct -"Internet of Drones" [128] -emphasised the importance of such interdisciplinary approaches by combining best practices in air traffic control networks, cellular networks as well as the internet to devising one of the first UTM constructs in scientific literature. Since then we have witnessed a clear interest in such holistic research as seen in [5], [102], [127], [129]- [136] on UTM systems, in addition to domain-specific research on airspace design in [101], [111], [113]- [120], collision avoidance and risk mitigation in [103]- [106], [137]- [146] and communication and cybersecurity in [96]- [100], [147]- [159] as summarised below in Table 2.…”