CAREER: Towards Reliable and Efficient Network Monitoring in White Space

监视空白空间中可操作的认知无线电网络的详细特征对于许多系统管理任务至关重要。由于动态频谱接入策略、低功耗主用户、宽频谱和无线电敏捷性，它面临着独特的挑战。为了可靠和有效地监测空白空间中的认知无线电网络，该项目开发了监测低功耗主用户（无线麦克风）和辅助网络活动的机制。这个项目有两个重点。第一个重点是在低信噪比和多用户场景下，通过集成声学传感和射频传感，实现可靠和快速检测无线麦克风系统的新方法。第二个重点是通过在线学习和动态监测信道切换，在有限监视器数量的辅助网络中对流量和频谱使用模式进行可定制的有效监测。该研究将为可靠、快速、低复杂度的主用户（无线麦克风）监控开辟一条新途径。它将促进对动态频谱接入系统中数据监测问题的理解，并在很大程度上促进白空间认知无线电网络的运行和优化。这个项目开发课程并教育学生。该项目的资料将以教程、讲座、出版物和软件工具包的形式在网上提供。主要成果将通过在会议和期刊上的介绍和出版物传播。

Monitoring the detailed characteristics of an operational cognitive radio network in white space is critical to many system administrative tasks. It faces unique challenges due to dynamic spectrum access policy, low-power primary users, wide spectrum, and radio agility. Towards reliable and efficient monitoring of cognitive radio networks in white space, this project develops mechanisms for monitoring the activity of low power primary users (wireless microphones) and secondary networks. There are two main thrusts in this project. The first thrust focuses on a novel approach for reliable and fast detection of wireless microphone systems by integrating acoustic sensing and RF sensing under low SNR and multi-user scenarios. The second thrust is on customizable efficient monitoring of the traffic and spectrum usage pattern in secondary networks with limited number of monitors through online learning and dynamic monitoring channel switching.The research will open up a new avenue for reliable, fast, and low-complexity primary user (wireless microphone) monitoring in white space. It will promote the understanding of the data monitoring problem in dynamic spectrum access systems, and largely facilitate the operation and optimization of cognitive radio networks in white space. This project develops curricula and educates students. Materials of this project will be available online in the forms of tutorials, talks, publications, and software toolkits. Major results will be disseminated through presentations and publications in meetings, conferences and journals.