6G卫星互联网通信安全抗干扰技术研究  

Research on Security Anti-interference Technology in 6G Satellite Internet

作　　者：鲁信金 黄璐莹 陈继林 雷菁[1] 李为[1] LU Xinjin;HUANG Luying;CHEN Jilin;LEI Jing;LI Wei(College of Electronic Science and Technology,National University of Defence Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院,湖南长沙410073

出　　处：《无线电通信技术》2023年第1期1-9,共9页Radio Communications Technology

基　　金：国家自然科学基金(61502518,6217072012);湖南省自然科学基金(2021JJ30777)。

摘　　要：卫星互联网具有节点暴露、信道开放、拓扑高度动态变化等特点,这使链路极易受到恶意电磁信号、大气层电磁信号及宇宙射线等的干扰,更有可能遭受恶意用户的窃听和非法截获。为解决这些问题,围绕卫星互联网的无线安全传输、身份认证以及通信抗干扰方法进行研究。首先,利用无线通信本身的信号格式和无线信道的物理特征,与新型信道编码和调制等技术相结合,实现无线安全传输;其次,利用物理层无线媒介如通信信道特征、收发硬件特征以及传输信号特征从而加强卫星互联网的身份认证;最后,提出了干扰环境中,采用智能化抗干扰基于“感知-学习-预测-决策-反馈”的逻辑闭环,进行主动抗干扰决策,以实现自配置和自优化的方案,从而保证卫星互联网数据传输的有效性和可靠性。As an important subsystem of 6G network, satellite communication has received widespread attention. Satellite Internet is characterized by exposed nodes, open channels, and highly dynamic topology, which makes its link vulnerable to malicious electromagnetic signals, atmospheric electromagnetic signals, and cosmic rays. Moreover, communication signals are easy to be eavesdropped and intercepted illegally by malicious users. In order to solve these problems, this paper focuses on wireless secure transmission, identity authentication and communication anti-jamming methods of satellite internet. Firstly, wireless secure transmission is realized by combining the signal format of wireless communication and the physical characteristics of wireless channel with new channel coding and modulation technologies. Secondly, the identity authentication of the satellite internet is enhanced by using physical layer wireless media such as communication channel characteristics, transceiver hardware characteristics and transmission signal characteristics. Finally, an intelligent anti-jamming logical closed loop based on "sensing-learning-prediction-decision-feedback" is proposed to make active anti-jamming decisions to achieve configuration and optimization, which ensures the effectiveness and reliability of satellite internet data transmission.

关 键 词：6G卫星互联网 无线安全传输 用户身份认证 通信智能抗干扰 

分 类 号：TN918.91[电子电信—通信与信息系统]