An Online Cross-Layered Defense Strategy With Bandwidth Allocation for Multichannel Systems Under DoS Attacks

• 成果类型: Article
• 署名作者: Wan, Liheng; Li, Panshuo; Lam, James
• 署名单位: Guangdong University of Technology; Guangdong University of Technology; University of Hong Kong
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2025.3566921
• 发表日期: 2025
• 页码: 6961-6968
• 关键词: Bandwidth; Cross layer design; Channel allocation; sensors; DELAYS; Symmetric matrices; Semidefinite programming; resource management; system dynamics; switches; Cross-layered defense strategy; DoS attacks; mixed-integer semidefinite programming; online optimization; smart enumeration

摘要

This article proposes an online cross-layered defense strategy for multichannel systems with switched dynamics under DoS attacks. The enabling condition of a channel under attacks is formulated with respect to attack flow and channel bandwidth, then a new networked control system model bridging the gap between system dynamics and network deployment is built. Based on this, the cross-layered defense strategy is proposed. It jointly optimizes the controller gain and bandwidth allocation of channels according to the real-time attack flow and system dynamics, by solving a mixed-integer semidefinite programming online. A smart enumeration algorithm for nonconvex bilevel optimization is proposed to analyze the stability under the strategy. Numerical examples are given to illustrate the high resilience from the cross-layered feature.