Ημερομηνία: 16/12/2021
Ομιλητής: Δρ. Χριστοδουλόπουλος Κωνσταντίνος, Researcher at Nokia Bell Labs
Passive optical networks (PON) are a mature, standardized and low-cost technology to provide broadband access for residential applications. In recent years, new use cases for PON were demonstrated, including passive optical LAN and the transport of 5G functional-split data. Using PON in industrial control and automation (operation technology – OT) use cases is very challenging, since such applications have stringent latency and latency variation (jitter) requirements. In particular, industry 4.0 requires a converged information technology (IT) and operation technology (OT) network, to enable the digitalization of the production, centralization, virtualization, joint optimization of control, augmented reality, digital twins, etc. Time Sensitive Networking (TSN) extends Ethernet standard to provide control over latency and enable the convergence of IT/OT. In this work we demonstrate a PON operating according to industrial-grade standards. Using a low latency PON-MAC and jitter compensation we demonstrate constant low latency transmission and successful interworking with TSN and OT flows.
Konstantinos Christodoulopoulos is a researcher in the Fixed Networks department of Nokia Bell Labs in Stuttgart, Germany. He was an Adjunct Assistant Professor at the Computer Engineering and Informatics Department of University of Patras, a senior researcher at the School of Electrical and Computer Engineering of the National Technical University of Athens, at the Computer Technology Institute, at Trinity College Dublin, and a contractor for IBM Dublin. He has served as Associate Editor in the IEEE/OSA Journal of Optical Communications and Networking and in various conference committees, including committee N3 (Architectures and Software-defined Control for Metro and Core Networks) of the Optical Fiber Communications (OFC) Conference. He has received 3 best paper awards, including the IEEE/OSA Journal of Lightwave Technology 2011 best paper award, and was invited as a speaker twice (2015 and 2019) in OFC. His research interests include optical network architectures, static and dynamic network optimization and control, low latency and deterministic networking.