卫星地面融合网络的窃听威胁与物理层安全解决方案  

Interception Threats and Physical Layer Security Solution of Integrated Satellite-Terrestrial Networks

作　　者：韩帅[1] 李季蹊 李静涛[2] HAN Shuai;LI Jixi;LI Jingtao(Harbin Institute of Technology,Harbin 150000,China;China Academy of Space Technology,Beijing 100081,China)

机构地区：[1]哈尔滨工业大学,中国哈尔滨150000 [2]中国空间技术研究院,中国北京100081

出　　处：《中兴通讯技术》2021年第5期43-47,共5页ZTE Technology Journal

基　　金：国家自然科学基金(61831002、61771169)。

摘　　要：分析了卫星地面融合网络(ISTN)中的现有安全架构与潜在的安全威胁。针对低轨卫星星座场景,以频发的窃听威胁作为研究重点;针对ISTN中的窃听威胁,提出了基于物理层安全(PLS)的解决方案;针对ISTN应用物理层安全解决方案所面临的相关信道、同频干扰、邻频干扰以及多用户多窃听者场景等挑战,提出了相应的解决方案。这对中国卫星互联网设施建设的落地具有重大的现实意义。The existing security architecture and potential threats in the integrated satellite terrestrial networks(ISTNs)are analyzed.Considering the Low Earth Orbit(LEO)satellite constellation scenario,the frequent interception threats are selected as the research fo-cus.In view of the interception threat,solutions based on physical layer security(PLS)are proposed.The challenges of applying PLS to an ISTN,including correlated channels,co channel interference,adjacent channel interference,and multi-user multi-eavesdropper scenarios are proposed,and the corresponding solutions to these challenges are then ana-lyzed.This is of great practical significance to the construction of China's satellite Internet facilities.

关 键 词：卫星地面融合网络 窃听威胁 物理层安全 

分 类 号：TN927.2[电子电信—通信与信息系统] TN918.1[电子电信—信息与通信工程]