Abstract
Heterogeneous networks (HetNets) comprising of various communication technologies with wireless backhaul capabilities are becoming essential ingredients to satisfy the high data rate requirements set for future wireless systems. The use of unmanned aerial vehicles (UAVs) and the addition of Terahertz (THz)-based communication is considered a key pillar in providing such capabilities. UAVs are used to provide infrastructure less, rapid and on-demand deployment, while THz technology is a new wireless frontier and a potential enabler for providing immense data rates. Wireless backhaul capabilities are necessary to avoid cumbersome wired layouts. In this paper, we consider a multi-tier HetNet comprising of UAVs operating at sub-6GHz, small base stations (BSs) operating at THz frequencies and a macro-BS (MBS) operating at sub-6GHz. Wireless backhauling is provided by the MBS, some UAVs, and by a few THz cells. Network coverage and data rates are taken as quality of service (QoS) performance metrics. We analyze the effectiveness of the HetNet configuration on network coverage and data rates by varying different parameters. Extensive simulation has been performed, which validates the significance of deploying such a HetNet with wireless backhaul capabilities and to provide elevated data rates to the end users.
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