基于强化学习的多层卫星网络边缘安全决策方法  

Security decision method for the edge of multi-layer satellite network based on reinforcement learning

作　　者：左珮良 侯少龙 郭超 蒋华 王文博[3] ZUO Peiliang;HOU Shaolong;GUO Chao;JIANG Hua;WANG Wenbo(Department of Electronics and Communication Engineering,Beijing Electronic Science and Technology Institute,Beijing 100070,China;School of Communication Engineering,Xidian University,Xi’an 710068,China;School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京电子科技学院电子与通信工程系,北京100070 [2]西安电子科技大学通信工程学院,陕西西安710068 [3]北京邮电大学信息与通信工程学院,北京100876

出　　处：《通信学报》2022年第6期189-199,共11页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62001251,No.62001252);北京高校“高精尖”学科建设基金资助项目(No.202100130401);西安电子科技大学综合业务网理论及关键技术国家重点实验室基金资助项目(No.ISN22-13)。

摘　　要：多层卫星网络凭借其全球覆盖、高机动性、强抗毁性等优势,成为学术界和产业界的关注热点。然而,多层异构卫星网络如何依靠卫星节点的自主判决能力,发挥网络边缘场景中针对感知数据包含加解密和压缩在内的处理以及回传方面的任务协作相关问题亟待解决。鉴于此,确立了包含低轨卫星的多层卫星网络边缘模型,并提出了一种基于深度强化学习的数据压缩与加密回传决策方法,旨在以确保数据安全为前提,以低传输时延为目标,实现任务卫星在多层卫星网络架构中的边缘决策。仿真和分析表明,所提方法具备合理性和可行性,能够快速地实现收敛,且相比于多个启发式方法具备更优异的性能。With the global coverage,high mobility,strong survivability and other advantages,multi-layer satellite network has become a hot spot in the academic and industrial circles.However,how to rely on the autonomous decision-making ability of nodes in multi-layer heterogeneous satellite networks to give full play to the task cooperation related to the processing of perceptual data,including encryption,decryption and compression,and the return in the network edge scene needs to be solved urgently.In view of this,the edge model of multi-layer satellite network including LEO satellite nodes was established,and a decision-making method of data compression and encryption backhaul on the basis of deep reinforcement learning was proposed,which aimed to realize the edge decision-making of mission satellites in multi-layer satellite network architecture on the premise of ensuring data security and with the goal of reducing the transmission delay.Simulation and analysis show that the proposed method is reasonable,and it can quickly achieve convergence,and has better performance than multiple heuristic methods.

关 键 词：多层卫星网络 低轨卫星 边缘决策 强化学习 数据加密 

分 类 号：TN92[电子电信—通信与信息系统]