报告题目：Secure Database-Driven Dynamic Spectrum Sharing
报 告 人：Rui Zhang, University of Delaware, Associate Professor
报告形式：腾讯会议 会议 ID：792 874 642
报告简介：Database-driven Dynamic Spectrum Sharing (DSS) is the de facto technical paradigm approved by Federal Communications Commission (FCC) for increasing wireless spectrum access by allowing unlicensed wireless devices (secondary users) with cognitive radio capabilities to have more flexible and efficient access to the radio spectrum without causing interference to licensed wireless devices (primary users). In a database-driven DSS system, a geo-location database administrator (DBA) manages secondary users' spectrum access based on the real-time spectrum availability in its service region. An effective approach to improve the spectrum-estimation accuracy in database-driven DSS systems is for the DBA to deploy a small number of dedicated spectrum sensors at strategic locations and outsources the majority of spectrum-sensing tasks to ubiquitous mobile users whereby to construct and maintain a Radio Environmental Map (REM) from periodically collected spectrum measurements. The feasibility of this approach is deeply rooted in the explosive growth in mobile devices with increasing capabilities in sensing, computation, communication, and localization. Security and privacy concerns are among the most challenging obstacles to the wide deployment of database-driven DSS systems armed with spectrum-sensing outsourcing. In this talk, I will present two case studies about the security and privacy challenges in database-driven DSS systems. Specifically, I will introduce a novel spatiotemporal approach to allow the DBA to construct an accurate REM in the presence of false spectrum measurements. Then I will present a novel private-preserving reverse auction mechanism to stimulate mobile users’ participation in crowdsourced spectrum sensing while ensuring high REM accuracy, approximate truthfulness, and differential bid privacy.
讲者简介：Rui Zhang received the B.E. in Communication Engineering and the M.E. in Communication and Information System from Huazhong University of Science and Technology, China, in 2001 and 2005, respectively, and the Ph.D. in Electrical Engineering from Arizona State University, in 2013. He is currently an Associate Professor in the Department of Computer and Information Sciences at the University of Delaware. Prior to joining UD, he was an Assistant Professor in the Department of Electrical Engineering at the University of Hawaii from 2013 to 2016 and a software engineer in UTStarcom Shenzhen R&D center from 2005 to 2007. His research interests are the security and privacy issues in wireless networks, mobile crowdsourcing, cloud/edge computing, and social networks. He is currently on the editorial boards of Wireless Networks and EAI Transactions on Security and Safety and regularly serve on the technical program committee for various conferences such as IEEE INFOCOM, IEEE CNS, IEEE SECON, and ACM ASIACCS. He received the US NSF CAREER Award in 2016.
His homepage is https://www.eecis.udel.edu/~ruizhang/.