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Due to Unmanned aerial vehicles (UAVs) limitations in processing power andbattery lifetime. The tethered UAV (TUAV) offers an attractive approach toanswer these shortcomings. Since a tethered connected to UAV is one potentialenergy solution to provide a stable power supply that connects to the groundwould achieve impressive performances in smart environments and disasterrecovery. The proposed solution is intended to provide stable energy andincrease the coverage area of TUAV for smart environments and disasterrecovery. This paper proposed that the tethered connected to UAV will providethe continuous supply and exchange the data with ground terminals. Besides theadjustable tether length, elevation angels act to increase the hovering region,leading to the scalability of coverage in many applications. Moreover, thepower consumption and transmission the distance while achieving a trade-offbetween the hovering and coverage probabilities. The simulation resultsdemonstrate efficient performance in terms of line-of-sight probability, pathloss, and coverage probability for scalability coverage smart environments anddisaster recovery scenarios. Furthermore, maximum coverage probability isachieved versus increased tethered length because of the gain and fly over aregion of maximum tethered.

Energy-Efficient Tethered UAV Deployment in B5G for Smart Environments and Disaster Recovery