The emerging 5G New Radio (5G NR) stimulates the evolution of applications in many fields. Compared with 4G, 5G NR can provide much more reliable, efficient, flexible networking access services to mobile devices which can escalate the quality of services (QoS) for the users remarkably. The advantages of affordability, easy assembling and quick driving, allow the deployment of Unmanned Aircraft System (UAS) on a large scale, and provide the elevation for the industrial and the civilian implementations ubiquitously. With the enhancement of cellular networking, the control range of UAS can extend significantly which allows the controller finish their mission far away from workplace and prevents the threats derived from the hazards in the uncertain environment. The Base Stations (BSs) are vital to the cellular-connected UAS because the BSs can provide the Internet access for the UAS and the remote controllers that sends instructions to the UAS and backhauls the packets to the controllers precisely and timely. However, the malicious BSs are great threats to the cellular-connected UAS. Specifically, the malicious BSs are scattered in the legislative BSs and cannot provide formal networking access services to the UAS. What is worse, the attackers can leverage the malicious BSs to disclose the controllers’ privacy and set threats to the public property.

In this paper, we propose a novel blockchain-based approach to mitigate the threats from accessing the malicious BSs. We implement the consensus construction on the authentication of networking access to enhance the efficiency of verification between BSs. To achieve the security of cellular connected UAS, we deploy blockchain to maintain the high online rate for accessing networking. Apart from the prevention of accessing malicious BSs, our approach can detect the malicious BSs and eliminate the proportion of the malicious BSs in the cellular networking. The evaluation shows that the proposed approach outperforms the conventional point-to-point authentication method. Concurrently, we enhanced the verification between BSs and the cellular-connected UAS. Our proposed blockchain enabled verification for cellular UAS networking has high potentials to rise the efficiency and the security of the UAS deployment on a large scale.

新兴的5G新无线电（5G NR）刺激了许多领域应用的发展。与4G相比，5G NR可以为移动设备提供更加可靠，高效，灵活的网络访问服务，从而可以显着提升用户的服务质量（QoS）。负担得起，易于组装和快速驾驶的优点，允许大规模部署无人飞机系统（UAS），并为工业和民用设施的普及提供了方便。随着蜂窝网络的增强，UAS的控制范围可以大大扩展，这使得控制器可以在远离工作场所的地方完成其任务，并可以防止在不确定的环境中源自危害的威胁。基站（BS）对于与蜂窝连接的UAS至关重要，因为BS可以为UAS和远程控制器提供Internet接入，这些远程控制器向UAS发送指令并准确及时地将数据包回送给控制器。然而，恶意BS对蜂窝连接的UAS构成了巨大的威胁。具体来说，恶意BS分散在立法BS中，不能为UAS提供正式的网络访问服务。更糟糕的是，攻击者可以利用恶意BS泄露控制器的隐私并对公共财产构成威胁。恶意BS分散在立法BS中，无法为UAS提供正式的网络访问服务。更糟糕的是，攻击者可以利用恶意BS泄露控制器的隐私并对公共财产构成威胁。恶意BS分散在立法BS中，无法为UAS提供正式的网络访问服务。更糟糕的是，攻击者可以利用恶意BS泄露控制器的隐私并对公共财产构成威胁。

在本文中，我们提出了一种新颖的基于区块链的方法来缓解来自访问恶意BS的威胁。我们对网络访问的身份验证实施共识构建，以提高基站之间的验证效率。为了实现蜂窝连接的UAS的安全性，我们部署了区块链以维持访问网络的高在线速率。除了防止访问恶意BS之外，我们的方法还可以检测到恶意BS，并消除了蜂窝网络中恶意BS的比例。评估表明，所提出的方法优于传统的点对点身份验证方法。同时，我们增强了BS与蜂窝连接的UAS之间的验证。