“…UAVs for disaster management [20] Technologies for emergency communications [38] Paradigms, physical and networking layers, challenges This paper Recovery of terrestrial networks 2016 MDRUs [44] 2017 Mobile edge infrastructure, cyber-physical systems [42] 2018 Disaster assessment, data inventory, field situation recording/reporting [41] 2019 D2D and cellular systems [39] 4G-LTE, D2D, UAVs, MANETs, IoT [40] 2021 6G-NIB, maritime communications [43] Installation of aerial networks 2013 Helikites, 4G-LTE RRH [62] 2014 Balloons, monitoring [64] 2015 EVs, UAVs, area partitioning [49] DTN, topology, altitude [61] Balloons, satellites, relaying, deployment time [65] 2016 Coverage, relaying, information dissemination [50] UAVs, WSNs [46] Optimal placement, throughput [54] 2017 EANET, AODV, ZRP [59] 2018 Balloons, LiFi [63] Tethered balloons [66] UAVs, resilience, D2D, power control [47] Implementation of PSO algorithm [51] 2019 Trajectory, scheduling, transceiver design [53] Transceiver design, routing, D2D [58] Heterogeneous networks (HetNets), routing, resource allocation [68] DTN, LoRa [60] 2020…”