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Prof. Iwao Sasase
Keio University, Japan

Expectation to smart ICT society by accelerating research and educational activities in universities and enterprises
Abstract: Due to the rapid advancement of ICT (information & communication technology), the ICT has now an essential role to support our daily life. The data traffic volume in 2020 is expected to reach about 1000 times of 2010, since the thing and the thing represented by M2M (machine-to-machine) and IoT (Internet of things) will be connected as well as many new ICT supported services/applications will be emerging. Thus, the role of ICT support will be more and more important for super-aged society, energy conservation, disaster prevention, environment protection, agricultural promotion.
First, I present an expectation to a smart ICT society from service/application point of view by focusing the next 5th generation mobile communication system and IoT era. Both the energy efficiency and spectrum efficiency are of course key concerns. However, I believe that security and privacy become more important issues in IoT era. Then, I introduce the outline of some of our research topics regarding “Secure access control system for realization of IoT with the high reliability”. Finally, I would like to talk about my personal view of how to enjoy doing research and education to accelerate research and educational activities in universities and enterprises to make our smart ICT society better based on the various experience and knowledge I got for more than 30 years working at a university

Biography: Iwao Sasase was born in Osaka, Japan in 1956. He received the B.E., M.E., and D. Eng. degrees in Electrical Engineering from Keio University, Yokohama, Japan, in 1979, 1981 and 1984, respectively. From 1984 to 1986, he was a Post Doctoral Fellow and Lecturer of Electrical Engineering at University of Ottawa, ON, Canada. He is currently a Professor of Information and Computer Science at Keio University, Yokohama, Japan. His research interests include modulation and coding, broadband mobile and wireless communications, optical communications, communication networks and information theory. He has authored more than 284 journal papers and 430 international conference papers. He granted 44 Ph.D. degrees to his students in the above field.
Dr. Sasase received the 1984 IEEE Communications Society (ComSoc) Student Paper Award (Region 10), 1986 Inoue Memorial Young Engineer Award, 1988 Hiroshi Ando Memorial Young Engineer Award, 1988 Shinohara Memorial Young Engineer Award, 1996 Institute of Electronics, Information, and Communication Engineers (IEICE) of Japan Switching System Technical Group Best Paper Award, and WPMC2008 Best Paper Award. He is now IEEE Tokyo Section Chair. He served as Board of Governors Member-at-Large (2010-2012), Japan Chapter Chair (2011-2012), Director of the Asia Pacific Region (2004-2005), Chair of the Satellite and Space Communications Technical Committee (2000-2002) of IEEE ComSoc., He also served as Vice President of IEICE (2014-2016), President (2013-2014), Vice President (2004-2006), Chair of the Network System Technical Committee (2004-2006), Chair of the Communication System Technical Committee (2002-2004) of IEICE Communications Society, Director of the Society of Information Theory and Its Applications in Japan (2001-2002). He is Fellow of IEICE, Senior Member of IEEE, Member of Information Processing Society of Japan, respectively.

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Dr Sławomir Hanczewski
Poznan University of Technology, Poland

Erlang's Ideal Grading in modeling modern telecommunications systems
Abstract: Erlang's Ideal Grading (EIG) is one of the oldest models of telecommunications systems that has been proposed within the domain of traffic engineering. The structure of the EIG group that services single service traffic and the corresponding analytical model were proposed by Erlang as early as 1917. The formula for a determination of the blocking probability in Erlang's Ideal Grading is called the Erlang’s Interconnection loss Formula. Because of its complexity, the group had no practical applications for quite a long time. It was only in the 1970s that the EIG model started to be used in approximate modeling of other telecommunications systems, for it was observed that the characteristics of most of uniform non-full-availability groups executed in network nodes at the time were similar to those of Erlang's Ideal Gradings and could provide a basis for effective approximations to be used in engineering practice. Then, the model proposed by Erlang started to be used in modeling single service switching networks. Regrettably, the absence of an appropriate EIG model for multiservice traffic caused the EIG to have lost the interest of researchers. It was only at the turn of the twentieth and twenty first centuries, and thanks to the development of EIG models with multiservice traffic, that the EIG could be used again in modern telecommunications traffic engineering.
In my talk, a selected number of examples of the application of the EIG model for analyzing modern telecommunications systems will be described. The presented examples confirm the universal nature of Erlang’s Ideal Grading model and the possibility of its application in engineering practice.

Biography: Dr Sławomir Hanczewski received M.Sc. and Ph.D. degrees in telecommunications from Poznan University of Technology, Poland, in 2001 and 2006, respectively. Since 2007 he has been working in the Faculty of Electronics and Telecommunications, Poznan University of Technology. He is an Assistant Professor in the Chair of Communications and Computer Networks. Slawomir Hanczewski is the author, and co-author, of more than 50 scientific papers. He is engaged in research and teaching in the area of performance analysis and modelling of queuing systems, multiservice networks and switching systems.

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Dr Maciej Sobieraj
Poznan University of Technology, Poland

Simulator of Elastic Optical Networks using 3-stage Clos switching network
Abstract:Over recent years, we have seen a rapid growth of network traffic. This growth is caused by increased bandwidth demands from end users. In the meantime, the development of optical networks has shown that they could meet the requirements for high bandwidth demands. Today, with the development of DWDM technology, all optical networks are gradually developed as the next generation communication networks which are paid more attention of researchers. In DWDM optical networks, it is therefore necessary to use optical switching networks to convert and transfer different wavelengths of optical signals in the network. This optical technology allows to increase transmission speed to 100 Gbps, 400 Gbps, or even 1 Tbps. There is no need to build very complex optical switching networks free from the blocking phenomenon – it is more important to have a possibility to determine loss probability in cost effective switching networks (e.g. three-stage Clos switching networks) servicing multiservice traffic streams. To do this a simulator of optical switching networks was developed. The simulator allows us to determine traffic characteristics such as loss probability in switching networks.

Biography: Maciej Sobieraj received M.Sc. and Ph.D. degrees in Electronics and Telecommunications from Poznan University of Technology, Poland, in 2008 and 2014, respectively Science 2007 he has been working at the Chair of Communication and Computer Networks at the Faculty of Electronics and Telecommunications at Poznan University of Technology. He is the co-author of more than 40 scientific papers. He is engaged in research in the area of modeling multiservice cellular systems and switching networks and traffic engineering in TCP/IP networks.

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Dr Dejan Vukobratovic
University of Novi Sad, Serbia

Smart Lighting and Internet of Things
Abstract: With the introduction of IoT technologies and proliferation of Visible Light Communications (VLC), indoor LED-based lighting is becoming a focus of intense interest in communication engineering community. In this talk, we discuss possibilities of developing indoor smart lighting solutions by exploiting several key ingredients: 1) low-cost fixed or wearable IoT devices that measure light illumination and provide information about occupant presence, 2) indoor VLC-based positioning for low-cost devices, and 3) central smart lighting optimization system that takes into account occupant comfort and position. The solution under development is part of an ongoing H2020 project SENSIBLE, which focuses on indoor sensing in built environment.

Biography: Dejan Vukobratovic received Dipl.-Ing, Mr.-Ing. and Dr.-Ing. degrees in electrical engineering from the University of Novi Sad, Serbia, in 2001, 2005 and 2008, respectively. Since February 2009, he was an Assistant Professor, and since March 2014, he is an Associate Professor with the Department of Power, Electronics and Communication Engineering, University of Novi Sad. From June 2009 until December 2010, Dr Vukobratovic was on leave as a Marie Curie Intra-European Fellow (FP7-PEOPLE-2008-IEF project "MMSTREAM") at the Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK. From 2011-2014, his research at the University of Novi Sad was supported in part by Marie Curie European Reintegration Grant (FP7-PEOPLE-2010-ERG project "MMCODESTREAM"). Research group of Dr Dejan Vukobratovic was involved in FP7-PEOPLE-2011-IRSES project "QoSTREAM" (2012-2016), and is involved in FP7-PEOPLE-2013-ITN project "ADVANTAGE" (2014-2018), and H2020-PEOPLE-2015-RISE project "SENSIBLE" (2017-2021).

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Dr Mariusz Żal
Poznan University of Technology, Poland

Energy-efficient Control And Data Planes For Switching Nodes
Abstract: For several years, many researchers have been working on reducing power consumption in telecommunication networks. All tasks undertaken in this area, called also "green energy” or "green communication”, are very important because they provide a major contribution to the natural environment protection. Networks called "green networks" can be described as networks in which requested throughput, required delay, and the minimum required number of users are ensured, and simultaneously, power consumption remains at a minimal level. Moreover, "green networks" and their devices must be compatible with current native, energy intensive network environment.
A switching node is an important element of a data transmission system such as a telecommunications network. Its task includes reliable and optimal (from the service quality point of view) data distribution to particular network areas as well as data exchange between autonomous networks. Each switching node is divided into a data plane and a control plane. In the data plane, each node contains a certain number of input and output interfaces through which end users in access networks or other switching nodes in backbone networks are attached. When an input interface receives a connection request, information about this event is sent to the control plane that is responsible for serving the received data.
In my talk I will show that power consumption control plane can be reduced through several ways, for instance keeping a controller of the switching fabric as simple as possible or by using ternary content addressable memories (TACM). Regarding data plane, the reduction energy consumption can be done by adopting the structure of switching fabric to the intensity of traffic offered, providing lossless operation of the switching fabric at the same time.

Biography: Mariusz Żal is an Assistant Professor at Poznan University of Technology (PUT), Poland. He received the M.Sc. and Ph.D. degrees in telecommunication from the PUT in 1996 and 2004, respectively. Since 1995 he has been working in the Institute of Electronics and Telecommunications, PUT, and now he is with the Chair of Communication and Computer Networks. He is the co-author over 50 papers. His scientific interests cover energy-efficient switching networks, green control algorithms, photonic broadband switch architecture with special regard to switches which can switch signals simultaneously and seamlessly both in the space and wavelength domains.

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