无线网络物理层协作安全传输与动态自适应机制研究

Current research on cooperative security is still hindered by lack of efficient resource utilization, mechanism for cooperative strategy adaptation, fusion architecture for learning and cognition, and intelligent decision making for security protection. Our research targets on enhancing physical layer security. With analysis on problems of current study in mind, we focus on cooperative secure transmit design and intelligent design as two key scientific problems. For the former problem, we focus on optimization of nodes selection to establish cooperation between legitimate transmitters and cooperative nodes, and joint optimization of transmit designs for both transmitters and cooperative nodes, improving physical layer security and efficiency of network resource utilization. For the latter problem, we focus on designing cognitive learning algorithms to quickly and accurately obtain wireless environment information, and intelligent decision making algorithms to support intelligent cooperative security. In addition, flexible resource allocation strategies, and mechanism of adaptive secure transmission will be designed. Our study tries to propose a solution for cooperative secure transmission from multiple aspects, including cooperation among nodes, cooperative strategy design, and strategy adaptation. It contributes to theoretical research and engineering practice of secure transmission in the next generation wireless networks.

针对当前协作安全研究在网络资源优化利用、协作方式动态调整、认知学习与智能决策方面的不足，本课题以增强物理层安全性能为核心目标，围绕协作安全传输优化设计、协作安全传输智能化设计这两个关键科学问题展开深入研究。在协作安全传输优化方面，提出节点选择优化方案来建立节点间的协作安全关系，同时联合优化发送节点和协作节点的传输设计来提高网络资源利用效率和安全性能。在协作安全传输智能化方面，提出认知学习算法来快速、准确地获取无线网络环境信息，进而设计智能决策算法来支撑协作安全的智能化，并提出灵活的资源分配方案和自适应的协作安全传输机制。本课题拟从协作安全关系建立、协作安全传输设计与自适应调整等多个角度提出一套系统性安全方案，为下一代无线网络安全传输的研究和工程实践做出贡献。

未来的无线网络设计中，提供安全保障至关重要。物理层安全协作传输作为一项具有安全.增强潜力的技术具有广阔的发展前景，但目前的协作安全研究在优化资源利用、学习与认知融.合、以及智能决策方面尚有一些不足之处。本课题以增强物理层安全性能为核心目标。针对当.前协作安全存在的问题，围绕协作安全传输优化设计、协作安全传输智能化设计这两个关键科.学问题展开深入研究。在协作安全传输优化方面，我们将网络资源管理与安全性能优化作为一.个关键技术问题进行重点研究；在协作安全传输智能化方面重点研究自适应协作安全传输、以.及认知学习与智能决策两个关键技术问题。本课题拟从安全增强、灵活自适应协作、智能控制.等多个角度提出一套系统性的协作安全传输方案，为下一代无线网络安全传输的研究和工程实.践做出贡献。