认知无线电网络频谱监控与侵权取证关键技术研究

Aiming at tackling challenges in spectrum monitoring and infringement forensics in cognitive radio networks, both fundamental and prospective research are carried out in this project. Major breakthrough has been made in developing mechanisms of user identification for interception signals, user infringement determination and methods of classification and other key technologies. Based on these technologies and with the integration of local demands of spectrum monitoring, it is investigated the time-frequency strategy of the wireless sniffers with the communication actions of secondary users unknown. The research is further expanded to scenarios of spectrum monitoring in a wide area, where the optimal disposition strategy of finite wireless sniffers is studied. Finally, a methodological system intended for spectrum monitoring and infringement forensics in cognitive radio networks is developed in supporting for the promotion and widespread of cognitive radio networks technically.

本项目针对"认知无线电网络"中频谱监控与侵权取证所面临的挑战，展开基础性与前瞻性研究。重点突破侦听信号的用户识别机制、用户侵权判定与分类方法等核心关键技术。在此基础上，结合局部区域的频谱监控需求，研究在次用户通信行为未知条件下的无线嗅探器时频调度策略；进一步拓展到广域空间的频谱监控场景，研究有限数量无线嗅探器的空间部署最优方案。最终形成一套适用于认知无线电网络频谱监控与侵权取证的方法与体系，为认知无线电网络的推广和应用普及提供技术支撑。

认知无线电是克服无线频谱资源限制的重要技术，频谱侵权是未来认知无线电网络应用所面临的主要挑战。本项目以认知无线电网络为研究场景，对频谱监控与侵权取证的关键性技术进行了探讨。具体内容包括基于被动监控框架的无线嗅探器的时频部署策略、广域空间的无线嗅探器冗余部署问题、认知无线电设备的频谱侵权判定方法、认知无线电频谱协作感知及无线网络安全机制研究。本项目旨在形成一套适用于认知无线电网络频谱监控与侵权取证的方法与体系，为认知无线电网络的推广和应用普及提供技术支撑。