Performance Evaluation of Aerial Relaying Systems for Improving Secrecy in Cellular Networks
Performance Evaluation of Aerial Relaying Systems for Improving Secrecy in Cellular Networks
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DOI：
10.1109/vtc2020-fall49728.2020.9348686
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
A. S. Abdalla;Bodong Shang;V. Marojevic;Lingjia Liu
中科院分区：
文献类型：
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作者：
A. S. Abdalla;Bodong Shang;V. Marojevic;Lingjia Liu
无人机系统/飞行器（UAS/ uav）正在商业空间中兴起，并将支持许多应用和服务，如智能农业、动态网络部署、网络覆盖扩展、监视和安全。新兴的5G地面蜂窝通信网络将支持UAS通信。本文描述了将无人机集成到蜂窝网络中的通信安全含义。我们考虑了无人机在地面蜂窝系统中的两个角色——守护者和攻击者——并分析了防止窃听的解决方案。我们的方法利用无人机监护人充当中继或干扰器的机动性。使用常见空对地和空对空信道模型的数值分析表明，在地面和无人机攻击的情况下，使用地面和空中中继节点如何提高保密率。具体来说，分析了地面和空中通信节点之间对高度和仰角的依赖关系。结果表明，策略性地使用单跳和多跳空中中继可以显著提高地面蜂窝网络用户的保密率。
Unmanned aerial systems/vehicles (UAS/UAVs) are emerging in commercial spaces and will support many applications and services, such as smart agriculture, dynamic network deployment, and network coverage extension, surveillance and security. Emerging 5G terrestrial cellular communications networks will support UAS communications. This paper describes the communications security implications of integrating UAVs into cellular networks. We consider two roles for UAVs in a terrestrial cellular system—guardians and attackers—and analyze solutions against eavesdropping. Our approach leverages the mobility of UAV guardians that act as relays or jammers. The numerical analysis using common air-to-ground and air-to-air channel models demonstrates how the use of ground and aerial relay nodes can improve the secrecy rate in light of ground and UAV-based attacks. Specifically, the dependency on height and elevation angle between the ground and aerial communicating nodes is analyzed. The results show that the strategic use of single and multi-hop aerial relays can significantly increase the secrecy rate of ground cellular network users.