Prof. Fumiyuki Adachi
Research Organization of Electrical Communication (ROEC), Tohoku University, Sendai, Japan
Abstract: After 35 years from its birth in 1979, mobile communications network has evolved into the 4th generation (4G). The mobile data traffic volume in 2020 is expected to reach about 1000 times of 2010. Therefore, the energy-efficiency has become an important concern for the next generation 5th generation (5G) mobile communications. To improve both the spectrum-efficiency and energy-efficiency, wireless networks need to be significantly restructured. One promising solution is to introduce small-cell structured networks. In this talk, after overviewing the evolution of mobile communications technology over the past 35 years, we will discuss about the small-cell structured networks for 5G. There are two approaches to implement the small-cells: distributed small base stations (SBSs) and distributed antennas (DAs). For small-cell structured networks using DAs, a virtual macro-cell concept will be introduced. Then, we will present the recent advances in distributed antenna cooperative signal transmission techniques which improve simultaneously the spectrum and energy efficiencies while providing seamless connection.
Biography: Fumiyuki Adachi received the B.S. and Dr. Eng. degrees in electrical engineering from Tohoku University, Sendai, Japan, in 1973 and 1984, respectively. In April 1973, he joined the Electrical Communications Laboratories of Nippon Telegraph & Telephone Corporation (now NTT) and conducted various researches on digital cellular mobile communications. From July 1992 to December 1999, he was with NTT Mobile Communications Network, Inc. (now NTT DoCoMo, Inc.), where he led a research group on Wideband CDMA for 3G systems. Since January 2000, he has been with Tohoku University, Sendai, Japan, where he is a Professor at the Dept. of Communications Engineering, Graduate School of Engineering. His research interest is in the area of wireless signal processing (multi-access, equalization, antenna diversity, adaptive transmission, channel coding, etc.) and networking.
He is an IEICE Fellow and an IEEE Fellow. He was a recipient of the IEEE Vehicular Technology Society Avant Garde Award 2000, IEICE Achievement Award 2002, Thomson Scientific Research Front Award 2004, Ericsson Telecommunications Award 2008, Telecom System Technology Award 2009, Prime Minister Invention Award 2010, British Royal Academy of Engineering Distinguished Visiting Fellowship 2011, KDDI Foundation Excellent Research Award 2012, VTS Conference Chair Award 2014, and C&C Prize 2014. He is listed in Highly Cited Researchers 2001 (http://highlycited.com/archives).
Prof. Kenichi Mase
Niigata University, Niigata, Japan
Abstract: A concept of wide-area deployable ad hoc networks together with an overview of ad hoc routing protocols is presented. An overview of the evolution of intelligent transport system supported by advances in information and communication technologies is presented. Various node networking including fixed node networking, balloon node networking, automobile node networking, and unmanned aerial (UAV) node networking are described. Implementation examples of each node networking are revealed and technical issues are discussed. With regard to automobile node networking, a perspective to evolution of routing protocols is given based on a survey of geographic routing protocols for vehicular ad hoc networks. With regard to UAV node networking, combination of airship and multirotor UAV is explored to realize distribution-service systems.
Biography: Kenichi Mase received the B. E., M. E., and Dr. Eng. Degrees in Electrical Engineering from Waseda University, Tokyo, Japan, in 1970, 1972, and 1983, respectively. He was Executive Manager, Communications Assessment Laboratory, NTT Multimedia Networks Laboratories from 1996 to 1998. He is now Professor Emeritus, Niigata University, Niigata, Japan. He received IEICE Best Paper Award in 1994, Best Letter Award in 2014, Achievement Award in 2014, the Telecommunications Advanced Foundation Award in 1998, IEEE CQR Chairman's Award in 2010, and Best Paper Award, International Academy, Research, and Industry Association in 2013. His research interests include communications network design and traffic control, quality of service, mobile ad hoc networks and wireless mesh networks. He was President of IEICE-CS in 2008 and Vice President of IEICE in 2011 and 2012. He is an IEEE and IEICE Fellow.
Prof. Shigeo Shioda
Graduate School of Engineering, Chiba University, Japan
Abstract: The spatial relations between sensors placed for target detection can be inferred from the responses of individual sensors to the target object even if the location of object is unknown. In this talk, I show an algorithm for estimating locations of sensors based only on their responses to target objects. In the algorithm, two sensors are assumed to be connected when they simultaneously detect an object. Thus, new pieces of proximity (connectivity) information are obtained whenever an object passes over the area in which the sensors are deployed. This proximity information can be aggregated and transformed into a two dimensional map of sensors by exploiting an algorithm of the connectivity-based sensor localization. This algorithm works even if the locations of the sensors are unknown at first. A map of the locations of the sensors is gradually built up as a number of objects pass over the area in which the sensors are deployed. In the talk, I show that this simple algorithm can yield surprisingly accurate estimates of the locations of sensors.
Biography: Shigeo Shioda received the B.S. degree in physics from Waseda University in 1986, the M.S. degree in physics from University of Tokyo in 1988, and the Ph.D degree in teletraffic engineering from University of Tokyo, Tokyo, Japan, in 1998. In 1988 he joined NTT, where he was engaged in research on traffic measurements and controls for ATM-based networks. He moved to Chiba University in 2001. Currently he is a Professor in Graduate School of Engineering, Chiba University. His current research interests include wireless sensor networks, wireless LANs, and online social networks. He received Network System Research Award, Information Network Research Award, and Communications Society Distinguished Contributions Award of IEICE respectively in 2003, 2004, 2007, 2013, 2015, and IEEE MASS Best Poster Award in 2013. Prof. Shioda is a member of the IEICE, the ACM, the IEEE, and the Operation Research Society of Japan.
Prof. Masaki Aida
Graduate School of System Design, Tokyo Metropolitan University, Japan
Abstract: Since information exchange via social networks is being stimulated by the recent rapid adoption of information networks, the complex dynamics generated in social networks is interesting research objects. In this talk, I show an oscillation model for elucidate the propagation of activities on social networks. In order to analyze such dynamics, we generally need to model asymmetric interaction between nodes, because influence between users is asymmetric in general. In matrix-based network models, asymmetric interaction between nodes is frequently modeled by a directed graph expressed as an asymmetric matrix. Unfortunately, it is difficult to analyze the dynamics of a network that is described by an asymmetric matrix. I discuss a symmetric matrix-based model that can describe some types of link asymmetry. In addition, I show two applications: the first one is an extension of node centrality, and the second one enables us to estimate eigenvalues of a matrix describing the structure of networks even if we do not know elements of the matrix.
Biography: Masaki Aida received his B.S. degree in Physics and M.S. degrees in Atomic Physics from St. Paul's University, Tokyo, Japan, in 1987 and 1989, respectively, and the Ph.D. in Telecommunications Engineering from the University of Tokyo, Japan, in 1999. In April 1989, he joined NTT Laboratories. From April 2005 to March 2007, he was an Associate Professor at the Faculty of System Design, Tokyo Metropolitan University. He has been a Professor of the Graduate School of System Design, Tokyo Metropolitan University since April 2007. His current interests include information network science and network control mechanism in computer communication networks. He received the Best Tutorial Paper Award of IEICE Communications Society in 2013. He is a member of the IEEE and the Operations Research Society of Japan.
Prof. Maciej Stasiak
Poznań University of Technology, Poznań, Poland
Abstract: The analysis of modern networks, in particular of those with the capacity to support multi-service traffic, requires a development of appropriate analytical models. One of the most important problems faced by engineers is the need to develop simple and effective models for systems which have non full availability character.
Hitherto, no satisfactory solutions have been proposed that would make the evaluation of the performance parameters possible for different classes of calls with differentiated QoS requirements. Until now only results for borderline full availability cases have been obtained. These results, however, are usually of low accuracy and cannot provide useful basis for engineering methods and algorithms. In traffic theory, the problem is formulated as “non full availability models”, and it is addressed adequately by researchers and engineers alike.
In the Chair of Communications and Computer Networks at Poznan University of Technology, models of multi-service non full availability systems that enable the researcher to determine the values of the performance parameters for individual classes of calls have been developed. These models are based on the model of multi-service Erlang Ideal Grading (EIG), which can approximate complex non full availability network systems, such as cells in 4G and 5G networks, multi service overflow systems, multi service switching networks, multi service queuing access systems, etc.
To the best knowledge of the authors, the proposed models are, in fact, the first solution to the problem of multi-service non full availability systems modelling. These models can also constitute the basis of a network systems analysis that would take into account different scenarios for the service of multi rate traffic streams..
Biography: Maciej Stasiak received M.Sc. and Ph.D. degrees in electrical engineering from the Institute of Communications Engineering, Moscow, Russia in 1979 and 1984, respectively. In 1996 he received D.Sc. degree in electrical engineering from Poznan University of Technology. In 2006 he was nominated as full professor. Between 1983-1992 he worked in Polish industry as a designer of electronic and microprocessor systems. In 1992, he joined Poznan University of Technology, where he is currently Head of the Chair of Communications and Computer Networks at the Faculty of Electronics and Telecommunications.
He is the author or co-author of more than 250 scientific papers and five books. He is engaged in research and teaching in the area of performance analysis and modelling of multiservice networks and switching systems, in particular resource allocation, call admission control, quality of service, multi-rate systems and queuing systems. Since 2004, he has been actively carrying out research on modeling and dimensioning cellular 2/3/4G networks.
Prof. George Karagiannidis
Aristotle University of Thessaloniki, Greece
Abstract: Integrating hybrid robots and communications applications is a major challenge for both robotics and Comms research & development and a key enabler for a range of advanced services and facilities. Drones (flying robots) have become a viable sensor platform, due to the advances in communication, computation, and energy storage technology, as well as the development in aerodynamic materials. So far, research has focused only on the use of drones in cases of emergency and coverage of remote locations, as well as in cases of environmental incidents and disasters. This talk will present preliminary results of our research on using drones as an economically and operationally efficient alternative for the extension of the current telecommunication infrastructure, in order to meet the future communication needs. Particularly, drones could act as micro Base Stations in order to achieve cell offloading and capacity increase, enabling the service for large numbers of users and devices. The main challenges of regular application of drones for communication purposes are: i) establishment of communication with the backbone, ii) energy sustainability, iii) compatibility with the existing network, iv) QoS awareness.
Biography: George K. Karagiannidis was born in Pithagorion, Samos Island, Greece. He received the University Diploma (5 years) and PhD degree, both in electrical and computer engineering from the University of Patras, in 1987 and 1999, respectively. From 2000 to 2004, he was a Senior Researcher at the Institute for Space Applications and Remote Sensing, National Observatory of Athens, Greece. In June 2004, he joined the faculty of Aristotle University of Thessaloniki, Greece where he is currently Professor in the Electrical & Computer Engineering Dept. and Director of Digital Telecommunications Systems and Networks Laboratory.
His research interests are in the broad area of digital communications systems with emphasis on Wireless Communications, Wireless Power Transfer and Applications, Optical Wireless Communications, Molecular Communications, Communications and Robotics, Wireless Security.
He is the author or co-author of more than 350 technical papers published in scientific journals and presented at international conferences. He is also author of the Greek edition of a book on “Telecommunications Systems” and co-author of the book “Advanced Optical Wireless Communications Systems”, Cambridge Publications, 2012.
Dr. Karagiannidis has been a member of Technical Program Committees for several IEEE conferences such as ICC, GLOBECOM, VTC, etc. In the past he was Editor in IEEE Transactions on Communications, Senior Editor of IEEE Communications Letters, Editor of the EURASIP Journal of Wireless Communications & Networks and several times Guest Editor in IEEE Selected Areas in Communications.
Dr. Karagiannidis is a Fellow IEEE and and since January 2012 he is the Editor-in Chief of IEEE Communications Letters. He has been selected as a 2015 Thomson Reuters Highly Cited Researcher.