Abstract
Unmanned aerial vehicles (UAVs) have acquired remarkable popularity, thanks to their variety of applications in numerous domains spanning from surveillance, health to agriculture and smart cities. UAVs are also enabler in wireless communication that has potential features such as ubiquitous and reliable connectivity, fast and easy deployment, adaptive altitude, higher chance of line of sight (LOS) propagation path, higher mobility and flexibility. There are numerous surveys that summarized these advantages for different situations and scenarios. However, none of these surveys discussed the role of UAVs in public safety communications from the energy efficiency perspective. In this paper, we review the existing literature for UAV communication with taking into account the energy consumption criteria, and propose a multi-layered network architecture incorporating UAVs for public safety communication. Future research directions are also discussed.
Highlights
Unmanned aerial vehicles (UAVs) based communication is an emerging research area in next-generation wireless networks
When a UAV operates as a base station, it can provide a tremendous connectivity to the existing terrestrial base station (TBS) to enhance capacity, coverage and energy efficiency of wireless networks [6]
We provide in-depth discussions on UAV-based communication systems, review the existing surveys in detail, and discuss UAVs classification based on the parameters such as altitude, network, and applications regarding UAV deployment with minimum energy consumption
Summary
Unmanned aerial vehicles (UAVs) based communication is an emerging research area in next-generation wireless networks It has numerous applications in the field such as health services, traffic monitoring, inspection, and public safety [1], [2]. In [1], the authors proposed a three-layered disasterresilient architecture which integrates UAVs deployed at the edge to provide communication during emergency situation This architecture would be a good candidate to enable public safety applications. We provide in-depth discussions on UAV-based communication systems, review the existing surveys in detail, and discuss UAVs classification based on the parameters such as altitude, network, and applications regarding UAV deployment with minimum energy consumption. We discuss the key factors and challenges faced by UAVs during its placement and other important situations related to energy consumption in disaster situations. We group UAVs into three major broad categories: 1) altitude-based classification; 2) network-based classification; and 3) application-based classification
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