Survey of Important Issues in UAV Communication Networks
Lav Gupta, Raj Jain, and Gabor Vaszkun

TL;DR
This survey reviews the unique challenges and research efforts related to UAV communication networks, emphasizing issues like dynamic topology, security, routing, and energy efficiency to guide future developments.
Contribution
It provides a comprehensive overview of UAV network issues, highlighting gaps in current research and suggesting directions for future work in this emerging field.
Findings
UAV networks face unique challenges like high mobility and intermittent links.
Existing MANET and VANET protocols are insufficient for UAV network demands.
Research on SDN and energy-efficient protocols is emerging for UAVs.
Abstract
Unmanned Aerial Vehicles (UAVs) have enormous potential in the public and civil domains. These are particularly useful in applications where human lives would otherwise be endangered. Multi-UAV systems can collaboratively complete missions more efficiently and economically as compared to single UAV systems. However, there are many issues to be resolved before effective use of UAVs can be made to provide stable and reliable context-specific networks. Much of the work carried out in the areas of Mobile Ad Hoc Networks (MANETs), and Vehicular Ad Hoc Networks (VANETs) does not address the unique characteristics of the UAV networks. UAV networks may vary from slow dynamic to dynamic; have intermittent links and fluid topology. While it is believed that ad hoc mesh network would be most suitable for UAV networks yet the architecture of multi-UAV networks has been an understudied area.…
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