CAREER: Survivability and Selfcoexistence in the Battle of Cognitive Radio Network Societies

基于认知无线电（CR）的动态频谱接入（DSA）允许未使用的授权频带由未授权（次级）网络以机会主义/动态方式使用，前提是它们将在授权用户返回时空出。 DSA允许未经许可的用户共享频率，但该范例不提供良好的干扰保护。这提出了次级网络之间的自我共存的严重挑战以及通过各种非传统频谱攻击的恶意CR设备/网络中断的风险。该项目研究CR网络在对抗条件下的自我共存挑战，并研究基于博弈论，行为适应，随机学习和网络取证的跨学科方法，以帮助这些网络的生存性。为了评估有效性，该机制在CR原型测试平台上实现。该项目的智力价值在于：1）构建行为框架，研究频谱冲突的演化动力学，2）系统地理解恶意CR利用频谱敏捷性的最细粒度的独特阴影破坏性质，以及3）开发一套针对认知中断的生存机制并探索其有效性。该项目对无线技术/政策具有更广泛的影响，预计将有助于未来认知无线电的高效和安全设计。该项目致力于紧密结合研究和教育计划，围绕学生辅导，研究生/本科生课程增强和实践项目为基础的学习，从研究结果和K-12推广的反馈。研究成果将通过出版物、研讨会和辅导班传播。

Dynamic spectrum access (DSA) based on cognitive radio (CR) allows unused licensed bands to be used by unlicensed (secondary) networks in an opportunistic/dynamic manner under the provision that they would vacate upon the return of the licensed users. DSA allows unlicensed users to share frequencies, but the paradigm does not provide good protection from interference. This raises serious challenge of self-coexistence among the secondary networks as well as risks of disruption from malicious CR devices/networks through various non-traditional spectrum attacks. This project studies the self-coexistence challenges of CR networks under adversarial conditions and investigates inter-disciplinary methodologies based on game theory, behavioral adaptation, stochastic learning and network forensics that aid survivability of these networks. To assess effectiveness, the mechanisms are implemented on CR prototype testbed. The intellectual merit of this project lies in: 1) constructing behavioral frameworks studying the evolutionary dynamics of spectrum conflict, 2) systematically understanding the unique shadow-disruptive nature of the malicious CRs exploiting the finest granularity of spectrum agility, and 3) developing a suite of survival mechanisms against cognitive disruptions and exploring their effectiveness. The project has broader impact on wireless technologies/policies and is expected to help in the efficient and secure design of future cognitive radios. This project is committed to tightly integrate research and educational plans which revolve around student mentoring, graduate/undergraduate curriculum enhancement and hands-on project based learning taking feedback from research findings and K-12 outreach. Research results will be disseminated through publications, seminars, and tutorials.