移动通信2024，Vol.48Issue(9)：102-108,123,8.DOI:10.3969/j.issn.1006-1010.20240521-0001
基于队列稳定性的卫星安全波束成形算法
Queue-Stability-Based Secure Beamforming for Satellite Communications
摘要
Abstract
For spectrum-sharing space-air-ground-sea integrated networks vulnerable to eavesdropping risks,this paper proposes a robust secure beamforming method based on imperfect channel state information from eavesdroppers.Firstly,in a scenario where satellites,UAVs,and base stations employ multicast techniques to serve earth stations and terrestrial users while sharing spectrum resources,a joint optimization problem is formulated.This problem aims to minimize long-term average power consumption,subject to constraints on user service quality,eavesdropping probability,transmission power budget,and data queue stability.Secondly,to address the long-term average constraints,Lyapunov optimization techniques are used to convert the stochastic optimization problem into a per-slot penalized power minimization problem.An iterative algorithm is proposed,combining Bernstein's inequality and continuous convex approximation to derive the beamforming vector,ensuring secure and reliable transmission in the integrated space-air-ground-sea integrated network.Finally,simulation results demonstrate that the proposed method significantly enhances secrecy performance while achieving a favorable trade-offbetween power consumption and queue stability.关键词
空天地一体化网络/波束成形/物理层安全/非完美信道状态信息Key words
space-air-ground integrated networks/beamforming/physical layer security/imperfect channel state information分类
信息技术与安全科学引用本文复制引用
赖海光,郑成辉,石锋,徐林,魏武,季铭仪..基于队列稳定性的卫星安全波束成形算法[J].移动通信,2024,48(9):102-108,123,8.基金项目
2022年省科技计划专项资金(重点研发计划产业前瞻与关键核心技术)"卫星互联网应急救援通信系统关键技术研发"(BE2022080) （重点研发计划产业前瞻与关键核心技术）
