Space/Air Covert Communications:Potentials,Scenarios,and Key Technologies  

作　　者：Mao Haobin Liu Yanming Zhu Lipeng Mao Tianqi Xiao Zhenyu Zhang Rui Han Zhu Xia Xianggen 

机构地区：[1]School of Electronic and Information Engineering,Beihang University,Beijing 100191,China [2]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore [3]School of Science and Engineering,Shenzhen Research Institute of Big Data,the Chinese University of Hong Kong,Shenzhen,Guangdong 518172,China [4]Department of Electrical and Computer Engineering,University of Houston,Houston,TX 77004,USA [5]Department of Computer Science and Engineering,Kyung Hee University,Seoul,South Korea,446-701 [6]Department of Electrical and Computer Engineering,University of Delaware,Newark,DE 19716,USA

出　　处：《China Communications》2024年第3期1-18,共18页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(NSFC)under grant numbers U22A2007 and 62171010;the Beijing Natural Science Foundation under grant number L212003.

摘　　要：Space/air communications have been envisioned as an essential part of the next-generation mobile communication networks for providing highquality global connectivity. However, the inherent broadcasting nature of wireless propagation environment and the broad coverage pose severe threats to the protection of private data. Emerging covert communications provides a promising solution to achieve robust communication security. Aiming at facilitating the practical implementation of covert communications in space/air networks, we present a tutorial overview of its potentials, scenarios, and key technologies. Specifically, first, the commonly used covertness constraint model, covert performance metrics, and potential application scenarios are briefly introduced. Then, several efficient methods that introduce uncertainty into the covert system are thoroughly summarized, followed by several critical enabling technologies, including joint resource allocation and deployment/trajectory design, multi-antenna and beamforming techniques, reconfigurable intelligent surface(RIS), and artificial intelligence algorithms. Finally, we highlight some open issues for future investigation.

关 键 词：artificial intelligence(AI) sixth generation(6G) space-air-ground integrated networks(SAGINs) space/air covert communications 

分 类 号：TN929.5[电子电信—通信与信息系统] TP18[电子电信—信息与通信工程]