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Colloquia: Dr. Abusayeed Saifullah, Wayne State University
Presenter: Abusayeed Saifullah
Title: The Design of a Low-Power Wide-Area Network over White Spaces
Abstract: As a key technology driving the Internet-of-Things, Low-Power Wide-Area Networks (LPWANs) are evolving to overcome the range limits and scalability challenges in traditional wireless sensor networks. In this talk, I shall present the design of a new LPWAN architecture called SNOW (Sensor Network Over White Spaces) by exploiting the TV white spaces. SNOW is the first highly scalable LPWAN over the TV spectrum that enables asynchronous, low-energy, bi-directional, and massively concurrent communication between numerous sensors and a base station. This is achieved through a Distributed implementation of Orthogonal Frequency Division Multiplexing, called D-OFDM, that allows the base station using a single antenna-radio to receive concurrent transmissions made by the sensor nodes asynchronously. SNOW adopts a lightweight media access control protocol that efficiently implements per-transmission acknowledgments of the asynchronous transmissions by exploiting the adopted D-OFDM design. I shall also present an implementation of SNOW on hardware and some experimental results through deployments in three radio environments — Detroit Metropolitan area, a rural area, and an indoor environment.
Bio: Abusayeed Saifullah is an assistant professor of Computer Science at Wayne State University. He received PhD in Computer Science and Engineering with Turner Dissertation Award from Washington University in St Louis. His research concerns Internet-of-Things and wireless networks, cyber-physical systems, real-time and embedded systems, and distributed and parallel computing. He has a total citations of 3,250+ with an h-index of 26 according to Google Scholar. He received eight Best Paper Awards and nominations in highly competitive conferences including ACM EWSN (2021 nomination), IEEE RTSS (2019, 2014, 2011), IEEE ICII (2018), ACM SenSys (2016 nomination), and IEEE RTAS (2012 nomination). He is also a recipient of the NSF CAREER award (2019) and Wayne State University's College of Engineering Faculty Research Excellence Award (2020). Dr. Saifullah served as a program chair of IEEE ICESS 2020, as a track chair of IEEE ICCCN 2019, and as a TPC member of ACM SenSys, IEEE RTSS, ACM/IEEE IoTDI, IEEE RTAS, ACM/IEEE ICCPS, ACM MobiHoc, and IEEE INFOCOM. He is currently an editor of Elsevier Pervasive and Mobile Computing journal.
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After the presentation, there will be short time for discussion and questions.