DoS攻击下多线性系统多信道传输调度问题  

Multi-channel transmission scheduling problem of multi-linear systems under DoS attacks

作　　者：徐鑫[1] 王慧敏 XU Xin;WANG Hui-miny(College of Information Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学信息科学与工程学院,沈阳110819

出　　处：《控制与决策》2023年第9期2606-2613,共8页Control and Decision

基　　金：国家自然科学基金面上项目(61973062);中央高校基本科研业务费专项资金项目(N2104021);广东省基础与应用基础研究基金项目(2022A1515011143)。

摘　　要：信息物理系统(cyber-physical systems,CPSs)的应用愈加广泛,但因其本身具备开放性,易遭受网络攻击,并且攻击者越来越智能,故有必要开展CPSs安全性的相关研究.鉴于此,考虑具有多个远程状态估计子系统的信息物理系统在DoS攻击下的交互过程.每个系统中各传感器监控各自的系统,并由调度器为各个传感器的数据包分配通道,将其本地估计发送给远程状态估计器,目标是最小化总估计误差协方差.为了更接近实际应用场景,考虑在多信道传输过程中通道信号会受到不同环境影响,因此在不同环境的信道传输数据需要消耗的能量有所不同.调度器和攻击者对于通道的选择,需要满足通道对最低能量的需求才能进行传输和攻击.对于攻击者而言,考虑其更加智能,如果对一条通道攻击后仍然有剩余能量并满足其余通道要求,则可同时选择攻击其他通道进行攻击,进而实现与调度器相反的目标.在此基础上,构造一个双人零和博弈,并采用纳什Q学习算法求解双方的最优策略,为研究信息物理系统安全状态估计提供研究思路.In recent years,the application of cyber-physical systems(CPSs)is becoming more and more widespread.Since the openness of CPSs and network attackers are becoming more and more intelligent,it is necessary to study the security of CPSs.This paper mainly considers the interaction process of a CPS with several remote state estimation subsystems under DoS attacks.In each system,each sensor monitors its respective system and a scheduler assigns channels to packets from each sensor and sends its local estimates to the remote state estimator with the goal of minimizing the total estimation error covariance.In order to be closer to the real application scenario,the channel signals are considered to be affected by different environments during multi-channel transmission,so that the energy consumed to transmit data in channels of different environments varies.The scheduler and the attacker need to meet the minimum energy requirements in order to transmit data and attack.For the attacker,it is considered to be more intelligent,so if there is still residual energy after attacking one channel and satisfying the remaining channel requirements,it can choose to attack other channels at the same time,thus achieving the opposite goal as the scheduler.A two-player zero-sum game is constructed and the Nash Q learning algorithm is used to solve the optimal policies of both sides,which provides research ideas for studying the secure state estimation of CPSs.

关 键 词：信息物理系统 DOS攻击 远程状态估计 传输调度 零和博弈 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]