Keynote Speakers

Abstract: Time Sensitive Networking offers guarantees on worst-case delay, worst-case delay variation and zero congestion loss; in addition, it provides mechanisms for packet duplication in order to hide residual losses due to transmission errors. It finds applications in many areas such as factory automation, embedded and vehicular networks, audio-visual studio networks, and in the front-hauls of cellular wireless networks. In this talk we will describe how network calculus can be used to analyze components of time sensitive networks such as packet ordering and duplicate removal functions, schedulers, regulators and dampers. We will also explain why clock non-idealities matter, and will describe how to take them into account.

Bio: Jean-Yves Le Boudec is full professor at EPFL and fellow of the IEEE. He graduated from Ecole Normale Superieure de Saint-Cloud, Paris, where he obtained the Agregation in Mathematics in 1980 (rank 4) and received his doctorate in 1984 from the University of Rennes, France. From 1984 to 1987 he was with INSA/IRISA, Rennes. In 1987 he joined Bell Northern Research, Ottawa, Canada, as a member of scientific staff in the Network and Product Traffic Design Department. In 1988, he joined the IBM Zurich Research Laboratory where he was manager of the Customer Premises Network Department. In 1994 he joined EPFL as associate professor.

His interests are in the performance and architecture of communication systems. In 1984, he developed analytical models of multiprocessor, multiple bus computers. In 1990 he invented the concept called "MAC emulation" which later became the ATM forum LAN emulation project, and developed the first ATM control point based on OSPF. He also launched public domain software for the interworking of ATM and TCP/IP under Linux. He proposed in 1998 the first solution to the failure propagation that arises from common infrastructures in the Internet. He contributed to network calculus, a recent set of developments that forms a foundation to many traffic control concepts in the internet.

He earned the Infocom 2005 Best Paper award, with Milan Vojnovic, for elucidating the perfect simulation and stationarity of mobility models, the 2008 IEEE Communications Society William R. Bennett Prize in the Field of Communications Networking, with Bozidar Radunovic, for the analysis of max-min fairness and the 2009 ACM Sigmetrics Best Paper Award, with Augustin Chaintreau and Nikodin Ristanovic, for the mean field analysis of the age of information in gossiping protocols.

He is or has been on the program committee or editorial board of many conferences and journals, including Sigcomm, Sigmetrics, Infocom, Performance Evaluation and ACM/IEEE Transactions on Networking. He co-authored the book "Network Calculus" (2001) with Patrick Thiran and is the author of the book "Performance Evaluation of Computer and Communication Systems" (2010).

Abstract: This lecture will survey recent work on the system level analysis of large communication networks involving vehicular network elements. Vehicles in this setting may play a variety of roles beyond that of end user: relay, mobile base station, data harvester, etc. The analysis is based on a stochastic geometry model where the clustering of vehicles and other network elements on the road network is represented in terms of Poisson point processes on Poisson lines of the Euclidean plane. This leads to a computational framework allowing one to analyze several important classes of such vehicular communication networks.

The first one is that of classical cellular networks with vehicular end users. This Poisson computational framework allows one to derive the distribution of the Shannon rate of vehicle-to-all communications in a variety of cellular network settings: with or without spectrum sharing with other communications, with or without the addition of static road side units, when adding vehicular relays, etc. This distribution can for instance be used to assess the reliability of safety messages exchanged by vehicles in this setting and to determine network parameters for which this reliability satisfies predefined constraints.

The second class is that of networks using vehicles as mobile gateways to enable large-scale delay-tolerant Internet of Things (IoT) data harvesting. This encompasses both classical single-hop architectures and novel multi-hop architectures based on mesh communications between IoT devices and short range communications between data repositories located along the roads and vehicular harvesters. This computational framework can for instance be used to assess the sensing/harvesting capacity of such vehicular architectures.

This survey is based on joint research with Chang-Sik Choi (Hongik University, South Korea) and Gustavo de Veciana (UT Austin, USA).

Bio: F. Baccelli is a senior researcher at INRIA-ENS and an invited professor at Telecom Paris. His research is at the interface between applied mathematics and communication networks. His work on applied mathematics is focused on point processes, max plus algebras, network dynamics, stationary queuing networks, random graphs, and stochastic geometry. His main contributions to communications are centered on congestion control, information theory, and wireless networks. He received the France Télécom Prize of the French Academy of Sciences in 2002, the Math+X Award of the Simons Foundation in 2012, and the ACM Sigmetrics Achievement Award in 2014. He also received the 2014 Rice Prize and the 2014 Abraham Prize Awards of the IEEE Communications Theory Society for his work on wireless network stochastic geometry. He was the Math+X Simons chair in mathematics and ECE at UT Austin between 2012 and 2021. He is a member of the French Academy of Sciences. He is currently in charge of an interdisciplinary ERC advanced NEMO project on communications and network mathematics at INRIA-ENS.

Abstract: The emergency related to climate changes is pushing sustainability in the agenda of international organizations, policy makers and industries, especially in those sectors, like Information and Communication Technologies, that are growing fast and are drivers of economical growth. In this talk, we focus on radio access networks, which consume huge amounts of energy and are expected to increase their consumption at very high speed, considerably higher than those of other sectors. As possible solutions to cope with the issue of sustainability, we discuss the integration in the network of power supply systems based on renewable energy sources and the use of aerial platforms to off-load part of the traffic so as to reduce the power demand of the terrestrial network.

Bio: Michela Meo is a Professor of Telecommunication Engineering with the Politecnico di Torino. Her research interests include green networking, energy-efficient mobile networks and data centers, Internet traffic classification and characterization, and machine learning for video quality of experience. She edited a book Green Communications (Wiley) and several special issues of international journals. She chairs the International Advisory Council of the International Teletraffic Conference. She is a Senior Editor of IEEE Transactions on Green Communications and was an Associate Editor of ACM/IEEE Transactions on Networking, Green Series of the IEEE Journal on Selected Areas of Communications, and IEEE Communication Surveys and Tutorials. In the role of General or Technical Chair, she has lead the organization of several conferences, including ACM e-Energy, ITC, Infocom Miniconference, ICC simposia, and ISCC.