Unmanned aerial vehicles, commonly known as drones, are receiving growing research interest due to their ability to carry a multitude of sensors and to connect to mobile networks. They are also able to move freely across the air, which enables the creation of numerous applications that were until now considered impracticable. However, such applications may require high computational resources, reliable connection, and high data transmission rates to accomplish different tasks. Therefore, in this work, first, we discuss 5G communication networks and mobile edge computing (MEC) as promising technologies that can provide several benefits to drone-enabled environments and solve some of the presented issues. We also comment on 5G and MEC approaches, presenting the state of the art and seeking to solve each of the latter issues presented. Afterward, we introduce new security concerns of drone communication networks, given their recent popularity. These concerns are related to the possibility of malicious users taking advantage of this brand new technology, which has made many governments ban drones due to public safety. Next, blockchain technology is brought in as a novel solution to the security issues due to its decentralized nature, making it inherently safe. This article also surveys contributions that make use of each of the technologies mentioned to improve the emerging drone industry. Subsequently, we discuss open issues and future perspectives.

中文翻译：

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基于区块链的 5G 网络的新兴无人机趋势：未决问题和未来前景


无人机（通常称为无人机）由于能够携带大量传感器并连接到移动网络，因此受到越来越多的研究兴趣。它们还能够在空中自由移动，这使得能够创建许多迄今为止被认为不切实际的应用程序。然而，此类应用可能需要高计算资源、可靠连接和高数据传输速率来完成不同的任务。因此，在这项工作中，我们首先讨论 5G 通信网络和移动边缘计算 (MEC) 作为有前途的技术，它们可以为无人机环境提供多种好处并解决一些现有的问题。我们还对 5G 和 MEC 方法进行评论，介绍最新技术并寻求解决后面提出的每个问题。随后，考虑到无人机通信网络最近的流行，我们介绍了无人机通信网络的新安全问题。这些担忧与恶意用户利用这项全新技术的可能性有关，这使得许多政府以公共安全为由禁止无人机。其次，区块链技术因其去中心化的性质而被引入作为安全问题的新颖解决方案，使其本质上是安全的。本文还调查了利用上述各项技术来改善新兴无人机行业的贡献。随后，我们讨论悬而未决的问题和未来的前景。