REFERENCES
1. Liu J, Shi Y, Fadlullah ZM, Kato N. Space-air-ground integrated network: a survey. IEEE Commun Surv Tutorials 2018;20:2714-41.
2. Ghazzai H, Menouar H, Kadri A, Massoud Y. Future UAV-based ITS: a comprehensive scheduling framework. IEEE Access 2019;7:75678-95.
3. Oettershagen P, Melzer A, Mantel T, Rudin K, Stastny T, et al. Perpetual flight with a small solar-powered UAV: flight results, performance analysis and model validation. 2016 IEEE Aerospace Conference 2016:1-8.
4. Sekander S, Tabassum H, Hossain E. Statistical performance modeling of solar and wind-powered UAV communications. IEEE Trans on Mobile Comput 2021;20:2686-700.
5. Kato N, Fadlullah Z, Tang F, et al. Optimizing space-air-ground integrated networks by artificial intelligence. IEEE Wireless Commun 2019;26:140-47.
6. Wang Y, Xu Y, Zhang Y, Zhang P. Hybrid satellite-aerial-terrestrial networks in emergency scenarios: a survey. China Commun 2017;14:1-13.
7. Cheng N, Quan W, Shi W, et al. A comprehensive simulation platform for space-air-ground integrated network. IEEE Wireless Commun 2020;27:178-85.
8. Li Z, Wang Y, Liu M, et al. Energy efficient resource allocation for UAV-assisted space-air-ground Internet of remote things networks. IEEE Access 2019;7:145348-62.
9. Liu Q, Li M, Yang J, et al. Joint power and time allocation in energy harvesting of UAV operating system. Computer Communications 2020;150:811-7.
10. Morton S, D'Sa R, Papanikolopoulos N. Solar powered UAV: design and experiments. 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2015:2460-66.
11. Jashnani S, Nada T, Ishfaq M, Khamker A, Shaholia P. Sizing and preliminary hardware testing of solar powered UAV. Egypt J Remote Sens Space Sci 2013;16:189-98.
12. Oettershagen P, Melzer A, Mantel T, Rudin K, Lotz R, et al. A solar-powered hand-launchable UAV for low-altitude multi-day continuous flight. 2015 IEEE international conference on robotics and automation (ICRA) 2015:3986-93.
13. Turgut E, Cenk Gursoy M, Guvenc I. Energy harvesting in unmanned aerial vehicle networks with 3D antenna radiation patterns. IEEE Transactions on Green Commun Netw 2020;4:1149-64.
14. Cong J, Li B, Guo X, Zhang R. Energy management strategy based on deep Q-network in the solar-powered UAV communications system. 2021 IEEE International Conference on Communications Workshops (ICC Workshops) 2021:1-6.
15. Zhang J, Lou M, Xiang L, Hu L. Power cognition: enabling intelligent energy harvesting and resource allocation for solar-powered UAVs. Future Gener Comput Syst 2020;110:658-64.
16. Thanh PD, Hoan TNK, Giang HTH, Koo I. Cache-enabled data rate maximization for solar-powered UAV communication systems. Electronics 2020;9:1961.
17. Manzoor A, Kim K, Pandey SR, et al. Ruin theory for energy-efficient resource allocation in uav-assisted cellular networks. IEEE Trans Commun 2021;69:3943-56.
18. Sun Y, Xu D, Ng DWK, Dai L, Schober R. Optimal 3D-trajectory design and resource allocation for solar-powered UAV communication systems. IEEE Trans Commun 2019;67:4281-98.
19. Sun Y, Ng DWK, Xu D, Dai L, Schober R. Resource allocation for solar powered UAV communication systems. 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2018:1-5.
20. Last G, Penrose M. Lectures on the poisson process. Cambridge University Press; 2017;7.
21. Drela M, Youngren H. Xfoil 6.9 user primer. Department of aeronautics and astronautics, massachusetts institute of technology, cambridge, MA 2001;1.
22. National Renewable Energy laboratory. Available from: https://www.nrel.gov/ [Last accessed on 25 Aug 2022].
23. Heuser R. The data says: mobile traffic by day and time; 2015. Available from: https://www.seoclarity.net/blog/mobile-seo-by-day-and-time-11890/ [Last accessed on 25 Aug 2022].
24. Cui S. Solar energy prediction and task scheduling for wireless sensor nodes based on long short term memory. J Phys: Conf Ser 2018 1074:012100.
25. GSMA small cell deployment booklet. Available from: https://www.gsma.com/publicpolicy/wp-content/uploads/2016/12/GSMA_Small_Cell_Deployment_Booklet.pdf [Last accessed on 25 Aug 2022].