GAIN (Green, Adaptive, and Intelligent Networking) is a research group inside the Network Technologies, Services and Applications Laboratory (NETSA) of the University of Athens, focusing on adaptive networks exploiting intelligent mechanisms towards a more energy-efficient, environment-friendly operation.

About GAIN

With the current tendencies in developing and deploying new network systems and under continuous changes of system and user requirements, adaptability has become a key target in modern networking. This target asks for intelligent mechanisms to monitor, predict, and usually pro-act, to adjust system parameters and optimize operation. These are often accompanied by cross-layer techniques that violate the traditional layered-based protocol stack to coordinate different layers and provide for the required flexibility. Finally, energy efficiency has become a major objective nowadays, leading to what is referred to as green networking research, that can be better supported through adaptive techniques and intelligent solutions.

R&D Areas

  • Adaptive network architectures and systems

  • Flexible resource allocation

  • Interference management

  • Wireless sensor networks

  • Smart grid technologies

  • Energy efficiency and energy saving

  • Quality of Experience support

  • Software-Defined Networking

  • Adaptive video streaming

  • Device-to-device communications

  • Intelligent security

  • Blockchain-proof network design

  • Multi-Access edge computing

  • 5G network design and performance analysis

  • Internet of Things

Projects

User-centric middleware architecture for advanced service provisioning in future networks

Design and implementation of an efficient, reliable and secure smart energy network

Uncoordinated network strategies in LTE-Advanced networks

 A P2P platform supporting virtual communities to assist independent living of senior citizens

A European training network for beyond 2020 mobile data networks

Innovative approaches to the Ιnternet of Things

Integrated network REsource sharing service for user-CENTric digital content delivery in 5G mobile data networks

End-to-end Slicing and data-drivEn autoMAtion of Next generation cellular neTworks with mobIle edge Clouds

OPTIMised video content delivery chains leveraging data analysis over joint multI-accesS edge computing and 5G radio network infrasTructures

Recent Publications

- D Xenakis, N Passas, L Merakos, and C Verikoukis, Advanced Mobility Management for Reduced Interference and Energy Consumption in the Two-tier LTE-Advanced Network, Elsevier Computer Networks (COMNET) Journal, vol. 76, pp. 90–111, Jan 2015.

- E Liotou, D Tsolkas, N Passas, and L Merakos, Towards QoE Provisioning in Next Generation Cellular Networks”, IEEE COMSOC MMTC E-Letter, vol. 10, issue 3, May 2015.

- E Liotou, N Passas, and L Merakos, Quality of experience management in mobile cellular networks: key issues and design challenges”, IEEE Communications Magazine, vol. 53, issue 7, July 2015.

- D Tsolkas, N Passas, and L Merakos, Enabling Device Discovery Transmissions in LTE Networks with Fractional Frequency Reuse”, Elsevier Computer Networks (COMNET) Journal, vol. 88, pp. 149-160, Sept. 2015.

- D Xenakis, L Merakos, M Kountouris, N Passas, and C Verikoukis, Distance Distributions and Proximity Estimation given Knowledge of the Heterogeneous Network Layout, IEEE Transactions on Wireless Communications, vol. 14, issue 10, Oct. 2015.

- E Liotou, H Elshaer, R Schatz, R Irmer, M Dohler, N Passas, and L Merakos, “ Shaping QoE in the 5G ecosystem”, The 6th IEEE International Workshop on Quality of Multimedia Experience (IEEE QoMEX) 2014 , Costa Navarino, Greece, May 2015.

- D Tsolkas, E Liotou, N Passas, and L Merakos, “ Addressing traffic demanding scenarios in cellular networks through QoE-based rate adaptation”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC) 2015 , Hong Kong, China, August-September 2015.

- D Xenakis, M Kountouris, L Merakos, N Passas, and C Verikoukis, “On the Performance of Network-Assisted Device-to-Device Discovery”, IEEE Global Communications Conference (IEEE GLOBECOM) 2015 , San Diego, USA, December 2015.

- D Xenakis, N Passas, L Merakos, and C Verikoukis, Handover Decision for Small Cells: Algorithms, Lessons Learned and Simulation Study”, Elsevier Computer Networks (COMNET), Computer Networks, Elsevier, Vol. 100, pp 64-74, May 2016.

- D Xenakis, N Passas, L Merakos, and C Verikoukis, ANDSF-Assisted Vertical Handover Decisions in the IEEE 802.11/LTE-Advanced Network”, Elsevier Computer Networks (COMNET) Journal, vol. 106, September 2016.

- D Xenakis, M Kountouris, L Merakos, N Passas, and C Verikoukis, Performance Analysis of Network-Assisted D2D Discovery in Random Spatial Networks”, IEEE Transactions on Wireless Communications, vol. 15, no. 8, August 2016.

- D Tsolkas, N Passas, and L Merakos, Device discovery in LTE networks: A radio access perspective”, Elsevier Computer Networks (COMNET) Journal, vol. 106, September 2016.

- E Liotou, T Hossfeld, C Moldovan, F Metzger, D Tsolkas, and N Passas, “Enriching HTTP adaptive streaming with context awareness: A tunnel case study”, IEEE International Conference on Communications (IEEE ICC) 2016 , Kuala Lumpur, Malaysia, May 2016.

- E Liotou, D Tsolkas, and N Passas, “A roadmap on QoE metrics and models”, 23rd International Conference on Telecommunications (ICT) , Thessaloniki, Greece, May 2016.

- D Tsolkas, and N Passas, “Compensating Multiuser Synchronization Errors in 5G Communications: The Radio Resource Overhead”, 21st IEEE Symposium on Computers and Communications (IEEE ISCC) , Messina, Italy, June 2016.

- E Liotou, D Tsolkas, K Samdanis, N Passas, and L Merakos, “Towards Quality of Experience Management in the Next Generation of Mobile Networks”, European Conference on Networks and Communications (EuCNC) 2016, Athens, Greece, June 2016.

- S Tennina, D Xenakis, M Boschi, A Colarieti, N Passas, D Tsolkas, “A System Level Simulator for Reliable Smart Energy Networks”, IEICE Information and Communication Technology Forum (ICTF) 2016, Patras, Greece, July 2016.

- A Tsiota, D Xenakis, N Passas, L Merakos, “Jamming and Black Hole Attacks in the Smart Grid with Perfect Detection of Malicious Nodes”, IEICE Information and Communication Technology Forum (ICTF) 2016, Patras, Greece, July 2016.

- D Tsolkas, N Passas, and L Merakos, “ProVa: A Proximity Validation Approach For Enhanced Device Discovery”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC) 2016, Valencia, Spain, September 2016.

- E Liotou, R Schatz, A Sackl, P Casas, D Tsolkas, N Passas, and L Merakos, “The Beauty of Consistency in Radio-Scheduling Decisions”, IEEE Global Communications Conference (IEEE GLOBECOM) 2016, Washington, DC USA, December 2016.

- D Tsolkas, N Passas, D Petrov and M Pischella, Multi-User PHY-MAC Interaction for FBMC””, book chapter in Orthogonal Waveforms and Filter Banks for Future Communication Systems", Elsevier Academic Press, editors: Markku Renfors Xavier Mestre, Eleftherios Kofidis, Faouzi Bader, ISBN: 9780128103845, 2017

- D Tsolkas, E Liotou, N Passas, and L Merakos, A Survey on Parametric QoE Estimation for Popular Services”, Elsevier Journal of Network and Computer Applications (JNCA) , vol. 77, January 2017.

- M Jiang, D Xenakis, S Costanzo, N Passas, and T Mahmoodi, Radio Resource Sharing as a Service in 5G: A Software-defined Networking Approach”, Elsevier Computer Communications (COMCOM) Journal , vol. 107, July 2017.

- S Costanzo, D Xenakis, N Passas and L Merakos, Augmented RAN with SDN Orchestration of Multi-tenant Base Stations”, Springer Wireless Personal Communications Journal , vol. 96, issue 2, September 2017.

- P -V Mekikis, A Antonopoulos, E Kartsakli, N Passas, L Alonso, and C Verikoukis, “Stochastic Modeling of Wireless Charged Wearables for Reliable Health Monitoring in Hospital Environments”, IEEE International Conference on Communications (IEEE ICC) 2017, Paris, France, May 2017.

- E Liotou, K Samdanis, E Pateromichelakis, N Passas and L Merakos, QoE-SDN APP: A Rate-guided QoE-aware SDN-APP for HTTP Adaptive Video Streaming”, IEEE Journal on Selected Areas in Communications , vol. 36, issue 3, March 2018.

- E Datsika, A Antonopoulos, N Passas, G Kormentzas, and C Verikoukis, “Green Resource Management for Over-The-Top Services in 5G Networks using Matching Theory”, IEEE International Conference on Communications (IEEE ICC) 2018, Kansas City, USA, May 2018.

- M -E Xezonaki, E Liotou, N Passas and L Merakos, “An SDN QoE Monitoring Framework for VoIP and video applications”, IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (IEEE WoWMoM) 2018, Chania, Greece, June 2018.

- S Narayanan, D Tsolkas, N Passas and L Merakos, “NB-IoT: A Candidate Technology for Massive IoT in the 5G Era”, IEEE International Workshop on Computer-Aided Modeling Analysis and Design of Communication Links and Networks (IEEE CAMAD) 2018, Barcelona, Spain, September 2018.

- T Ayenew, D Xenakis, N Passas and L Merakos, “Dynamic Programming Based Content Placement Strategy for 5G and Beyond Cellular Networks”, IEEE International Workshop on Computer-Aided Modeling Analysis and Design of Communication Links and Networks (IEEE CAMAD) 2018, Barcelona, Spain, September 2018.

- A Tsiota, D Xenakis, N Passas, and L Merakos, On Jamming and Black Hole Attacks in Heterogeneous Wireless Networks”, IEEE Transactions on Vehicular Technology , vol. 68, issue 11, August 2019.

- E Liotou, D Tsolkas, S Tennina, L Pomante, G Kalpaktsoglou, and N Passas, “The CASPER project approach towards user-centric mobile networks”, Euromicro Digital System Design Conference 2019, Chalkidiki, Greece, August 2019.

- S Narayanan, D Tsolkas, N Passas, and L Merakos, “Performance Analysis of NB-IoT Random Access Channel”, International Conference on Interactive Mobile Communication, Technologies and Learning (IMCL) 2019, Thessaloniki, Greece, October 2019.

- A Tsiota, D Xenakis, N Passas, and L Merakos, “Multi-tier and multi-band heterogeneous wireless networks with black hole attacks”, IEEE Global Communications Conference (IEEE GLOBECOM) 2019, Waikoloa, Hawaii, USA, December 2019.

- T M Ayenew, D Xenakis, N Passas, and L Merakos, A Novel Content Placement Strategy for Heterogeneous Cellular Networks with Small Cells”, IEEE Networking Letters , vol. 2, issue 1, March 2020.

- D Xenakis, I Zarifis, P Petrogiannakis, A Tsiota, and N Passas, “Blockchain-driven mobile data access towards fully decentralized mobile video trading in 5G networks”, IEEE International Conference on Communications (IEEE ICC) 2020, Dublin, Ireland, June 2020.

- A -S Charismiadis, D Tsolkas, N Passas, and L Merakos, “A metaheuristic approach for minimizing service creation time in slice-enabled networks”, IEEE International Conference on Communications (IEEE ICC) 2020, Dublin, Ireland, June 2020.

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Contact

 

Dr. Nikos Passas

Dept. of Informatics and Telecommunications
University of Athens
Panepistimiopolis, Ilisia
15784, Athens – Greece

Tel: +30 210 7275651
Fax: +30 210 7275601
email: passas@di.uoa.gr

Short CV:

Professor Lazaros Merakos received the Diploma in Electrical and Mechanical Engineering from the National Technical University of Athens, Athens, Greece, in 1978, and the M.S. and Ph.D. degrees in Electrical Engineering from the State University of New York, Buffalo, in 1981 and 1984, respectively. From 1983 to 1986, he was on the faculty of the Electrical Engineering and Computer Science Department, University of Connecticut, Storrs. From 1986 to 1994, he was on the faculty of the Electrical and Computer Engineering Department, Northeastern University, Boston, MA. During the period 1993–1994, he served as Director of the Communications and Digital Processing Research Center, Northeastern University. During the summers of 1990 and 1991, he was a Visiting Scientist at the IBM T. J. Watson Research Center, Yorktown Heights, NY. In 1994, he joined the faculty of the University of Athens, Athens, Greece, where he is presently a Professor in the Department of Informatics and Telecommunications, and Scientific Director of the Networks Operations and Management Center.

His research interests are in the design and performance analysis of communication networks, and wireless/mobile communication systems and services. He has authored more than 200 papers in the above areas. He has served as the scientific director of the Communication Networks Laboratory of the University of Athens in numerous research projects, including the projects RAINBOW, WAND, MOBIVAS, WINE, EURO-CITI, POLOS, ANWIRE, E2R, E2RII, E3, Self-NET funded by the European Union. Dr. Merakos is chairman of the board of the Greek Schools Network, and member of the board of the National Research Network of Greece. In 1994, he received the Guanella Award for the Best Paper presented at the International Zurich Seminar on Mobile Communications.

Web Page:

http://cnl.di.uoa.gr/merakos

Contact Info:

Phone: +30 210 7275323
Fax: +30 210 727 5601
Email: merakos@di.uoa.gr

Short CV:

Dr. Nikos Passas received his Diploma (honors) from the Department of Computer Engineering, University of Patras, Greece, and his Ph.D. degree from the Department of Informatics and Telecommunications, University of Athens, Greece, in 1992 and 1997, respectively. From 1992 to 1995 he was a research engineer at the Greek National Research Center "Demokritos". Since 1995, he has been with the Communication Networks Laboratory of the University of Athens, working as a sessional lecturer and senior researcher in a number of national and European research projects. He has also served as a guest editor and technical program committee member in prestigious magazines and conferences, such as IEEE Wireless Communications Magazine, Wireless Communications and Mobile Computing Journal, IEEE Vehicular Technology Conference, IEEE PIMRC, IEEE Globecom, etc. Dr. Passas has published more than 100 papers in peer-reviewed journals and international conferences and has also published 1 book and 10 book chapters. His research interests are in the area of mobile network architectures and protocols. He is particularly interested in QoS for wireless networks, medium access control, and mobility management. Dr. Passas is a member of the IEEE and a member of the Technical Chamber of Greece.

Web Page:

http://www.di.uoa.gr/~passas

Contact Info:

Phone: +30 210 727 5651
Fax: +30 210 727 5601
Email: passas@di.uoa.gr

 

Short CV:

Professor Takis Mathiopoulos has been recently elected Professor of Digital Communications in the Department of Informatics and Telecommunications, University of Athens where is has been teaching part-time since 2003. He obtained his Diploma in Electrical Engineering from the University of Patras and M.Eng. degree with specialization in Microwaves from Carleton University, and the Ph.D. degree in digital communications from the University of Ottawa, Canada, in 1989. From 1982 - 1986, he was with Raytheon Canada Ltd., working in the areas of air navigational and satellite communications. In 1989, he joined the Department of Electrical and Computer Engineering (ECE), University of British Columbia (UBC), Canada, where he was a faculty member for 13 years, and from 2000 – 2003 he was holding the rank of Professor. He is currently Director of Research at the Institute for Space Applications and Remote Sensing (ISARS), National Observatory of Athens (NOA), where he established and directed the Wireless Communications Research Group. As ISARS' Director, he has led the Institute to a significant expansion R&D growth, and international scientific recognition. For these achievements, ISARS has been selected as a national Centre of Excellence for the years 2005 to 2008. Since 2003 he also teaches part-time at the Department of Informatics and Telecommunications, University of Athens. In 2008 and for a period of 5 years he was appointed Guest Professor at the Southwest Jiaotong University, China.

For the last 20 years he has been conducting research mainly on the physical layer of digital communication systems for terrestrial and satellite applications, including digital communications over fading and interference environments. He is also interested in channel characterization and measurements, modulation and coding techniques, network coding, cooperative communications, SIMO/MIMO, UWB, OFDM, and software/cognitive radios. In these areas, he has co-authored more than 80 journal papers, mostly published in IEEE journals, 4 book chapters and some 110 conference papers. He has supervised the thesis of 10 PhD students and more then 15 postdoctoral fellows, many of whom hold faculty positions in Canadian, USA and Greek Universities. His research has been funded by Canadian, European and Greek funding agencies as he has been the PI of more than 40 research grants.

He co-authored a paper in GLOBECOM'89 establishing for the first time in the open technical literature the link between MLSE and multiple (or multi-symbol) differential detection for the AWGN and fading channels. In September 2005, this contribution has been acknowledged by the Editors of IEEE Journal of Selected Areas in Communications as a breakthrough and a seminal paper which has been selected as one of the four most influential papers of the last 40 years in the field of noncoherent detection. He has received numerous awards, including an ASI Fellowship, a Killam Research Fellowship and a best paper award from the 2008 International Conference on Communication, Control, and Signal Processing.

Dr. Mathiopoulos has been or currently serves on the editorial board of several scientific journals, including the IET Communications, and the IEEE TRANSACTIONS ON COMMUNICATIONS (1993 -2005). He has regularly acted as a Consultant for various governmental and private organizations. Since 1993, he has served on a regular basis as a scientific advisor and a technical expert for the European Commission (EC). He has been a member of the TPC of more than 50 international conferences, as well as the Vice Chair for the Spring 2006-S IEEE VTC and the 2008-F IEEE VTC. He has delivered numerous invited presentations, including plenary lectures, and has taught many short courses all over the world.

Web Page:

https://sites.google.com/view/p-takis-mathiopoulos/home

Contact Info:

Phone: +30 210 727 5118
Email: mathio@di.uoa.gr

Short CV:

Professor Elias S. Manolakos received the Diploma in Electrical Engineering from the National Technical University of Athens, the M.Sc. degree in Electrical Engineering from the University of Michigan, Ann Arbor, USA, and a Ph.D. in Computer Engineering from the University of Southern California, Los Angeles, USA. He is currently an Assoc. Professor with the Department of Informatics and Telecommunications, University of Athens, where he is also the Director of the multi-disciplinary graduate program “Information Technologies in Medicine and Biology”. Before returning to Greece (2004) he has been an Assistant and then Associate Professor (with tenure) at Northeastern University, Boston, USA where for three years (1996-1999) he also served as the Director of the internationally known “Communications and Digital Signal Processing (CDSP), Center for Research and Graduate Studies”.

Dr. Manolakos research interests include parallel and distributed DSP, embedded systems, machine learning, predictive modelling and their applications in network computing, sensor networks, computational biology and  ecological systems modeling. He has authored, or co-authored with his students, more than 120 articles in international journals and refereed Conference proceedings. Elias has received the prestigious NSF Research Initiation Award (1992) and has led or played a leadership role in more than 20 research projects supported by funding agencies in the U.S. (NSF, EPA, DARPA, etc.), EU (FP6, FP7, AAL) and Greece (GSRT).

Dr. Elias S. Manolakos has been elected and served for two consecutive three-year terms in the International Technical Committees IEEE Design and Implementation of Signal Processing Systems (IEEE-DISPS) and IEEE Machine Learning for Signal Processing (IEEE-MLSP). He is currently serving in the Advisory Board of both these committees. Elias has been an Editorial Board member (Associate Editor) of several prestigious scientific journals (IEEE Transactions on Signal Processing, IEEE Transactions on Neural Networks, IEEE Signal Processing Letters, IEEE Computing in Science and Engineering, Journal of Signal Processing Systems, Springer etc.) and the Chair of the Technical Program and/or organizing committees of several IEEE Conferences and Workshops. Dr. Elias S. Manolakos is an IEEE Senior Member (elected in 1995).

Web Page:

http://www.di.uoa.gr/eng/staff/1177

Contact Info:

Phone: +30-210-7275312
Fax: +30-210-7275214
Email: eliasm@di.uoa.gr

 

Short CV:

Dr. Dionysis Xenakis received his B.Sc. degree in Computer Science in 2007, his M.Sc. degree in Communications Systems and Networks in 2009, while he has pursued his Ph.D. degree at the Department of Informatics and Telecommunications - University of Athens, Greece. In 2008, he received the M.Sc. Excellence Award in the field of Networks and Communication Systems from the same department. Dionysis has participated in various FP7 research projects, including PHYDYAS, C2POWER, HRAKLEITOS II, CROSSFIRE, SMART-NRG, SPOTLIGHT, CASPER. Dionysis has received funding by the Alexander S. Onassis Public Benefit Foundation as Principal Investigator in the Prometheus research program funded by the same institution for PostDoc research. Dionysis has authored more than 35 peer-reviewed publications in prestigious conferences and high-impact journals, while he has served as TPC Chair, TPC member, or technical reviewer in flagship conferences (e.g., IEEE GLOBECOM, IEEE ICC, IEEE CAMAD, IEEE VTC, ICC, and WCNC) and international journals (e.g. IEEE TWC, IEEE TCOM, IEEE TVT, IEEE ComMag, IEEE WCM, IEEE CL, Elsevier ComCom, Elsevier ComNet, Springer WINET). Dionysis is member of the GAIN group since its foundation and member of the NETSEA group since 2007. Dionysis has served as a Laboratory Assistant and invited lecturer (MSc/BSc courses) at the National and Kapodistrian University of Athens, while he has also given numerous training seminars for EU-funded projects, including BeFEMTO, FREEDOM, CROSSFIRE, ACROPOLIS, WHERE2, SMART-NRG and others. His current research interests include Stochastic Modeling and Optimization of Multi-tier Wireless Networks, Incentive Engineering in 5G Mobile Data Networks using Blockchains, Mobile Edge Computing Platforms and Communication Protocols.

Web Pages:

http://cgi.di.uoa.gr/~nio/

https://scholar.google.com/citations?user=0qTbFrgAAAAJ&hl=en

Contact Info:

Phone: +30 210 727 5123

email: nio@di.uoa.gr

Short CV:

Dr. Dimitris Tsolkas holds a Ph.D degree from the Department of Informatics and Telecommunications, National and Kapodistrian University of Athens (NKUA). He has long experience in R&D and project management, working in a plethora of EC-funded research and development projects in association with institutions from academia (Department of Informatics and Telecommunications - NKUA, Computer Technology Institute and Press “Diophantus”, and Department of digital systems - University of Piraeus) and industry (LINK Technologies S.A., WEST L’Aquila, and MOBICS S.A.). He has teaching experience as lecturer at Business College of Athens (BCA) and at the department of Computer Science and Engineering, University of Ioannina, and, as assistant instructor of postgraduate courses at the department of Informatics and Telecommunications – NKUA. He has published more than 35 articles in peer-reviewed journals, international conferences and book chapters. His research interests lie in the areas of 5G RAN optimization and network slicing, D2D and V2X communications, as well as QoE provisioning.

Web Pages:

www.di.uoa.gr/~dtsolkas

https://scholar.google.gr/citations?user=VOCdW4AAAAAJ&hl=en

Contact Info:

Phone: +30 210 7275143

Email: dtsolkas@di.uoa.gr

Short CV:

Dr. Eirini Liotou holds a PhD degree from the Department of Informatics and Telecommunications, National and Kapodistrian University of Athens since 2017. She obtained the MSc in Informatics and Telecommunications from the National and Kapodistrian University of Athens and the MSc in Communications and Signal Processing from the Imperial College of London. She received the Diploma in Electrical and Computer Engineering from the National Technical University of Athens. She has worked as a Software Engineer in Siemens AG and as a Senior Software Engineer in Siemens Enterprise Communications in the R&D department for the SME business sector, where she joined the UC Call Processing team involved in the development activities in the areas of call control features, VoIP signaling protocols and UI programming of high-end telephones. She has authored more than 25 peer-reviewed publications in conferences and high-impact journals, while she has served as Technical Program Committee member and Technical Reviewer in flagship IEEE conferences and international journals. During her PhD she has visited Vodafone R&D Technology, UK, and the University of Duisburg-Essen, Germany. She has participated in various EU projects (CROSSFIRE, SMART-NRG, CASPER, 5GENESIS, etc.) and COST actions (QUALINET, ACROSS, IRACON, etc.). Her main research interests include Quality of Service and Quality of Experience management, radio resource management, adaptive video streaming and Software-Defined Networking in mobile and wireless networks. Currently, she is working as a Post-Doc researcher in the Communication Networks Laboratory of the Department of Informatics and Telecommunications in the National and Kapodistrian University of Athens. Dr. Liotou is a member of the N2WOMEN BOARD since January 2019.

Web Pages:

http://users.uoa.gr/~eliotou/

Contact Info:

Phone: +30 210 727 5158

email: eliotou@di.uoa.gr

Short CV:

Mrs. Anastasia Tsiota received the B.Sc. degree from the National and Kapodistrian University of Athens, Athens, Greece, in 2012, with a scholarship from Papadakis Foundation, and the M.Sc. degree in data networks and communication systems from the National and Kapodistrian University of Athens, in 2015, with a scholarship from A. Onassis Foundation. She is currently working toward the Ph.D. degree in the field of reliable data communications in multi-tier wireless networks with the National and Kapodistrian University of Athens. She has participated in various EU and Greek-funded research projects. Her current research interests include network security for multi-tier networks, incentive engineering technologies for wireless data transfer and stochastic modeling/analysis of 5G mobile data networks.

Web Page:

https://www.researchgate.net/profile/Anastasia_Tsiota

Contact info:

Phone: +30 210 727 5158

email: atsiota@di.uoa.gr

Short CV:

Mr. Subin Narayanan is an early-stage researcher in Marie Curie ITN project SPOTLIGHT, working towards his Ph.D on the topic massive machine type communication in 5G and beyond network since 2018, in the Green, Adaptive and Intelligent Networking Group within the Communication Networks Laboratory of the Department of Informatics & Telecommunications in National and Kapodistrian University of Athens. He holds a professional doctorate in engineering (PDEng) from TU Eindhoven (2017). During his PDEng he worked on high-frequency antenna array for 5G backhaul link. He obtained his master degree and bachelor degree from Cochin University of Science and Technology, with first-class in the field of electronics and communications. During his PDEng and Ph.D. he collaborated with NXP semiconductors, and Ericsson. His main research interest is IoT and integrated access backhaul in the 5G and beyond networks.

Web Page:

https://www.researchgate.net/profile/Subin_Narayanan2

Contact Info:

email: snarayanan@di.uoa.gr

 

Short CV:

Mr. Tadege Mihretu-Ayenew obtained his BSc degree in electrical engineering from Arba Minch University (Ethiopia, 2009) and MSc degree in telecommunication engineering from the University of Brescia (Italy, 2016), attended MTech in microelectronics engineering at Addis Ababa University & IIT-Delhi (Ethiopia, 2009). From 2009 to 2013, he worked as an electrical engineer and network specialist in Ethio Telecom, Ethiopia. In 2016, he was an intern researcher at TNO, The Netherlands. Since 2017, he is an early stage researcher (ESR) in the SPOTLIGHT project (of the EU Marie. S. Curie Initiative) in the GAIN group. He is also a Ph.D. candidate at the Polytechnic University of Catalonia (UPC), Spain. In addition to his academic works, he has been participating in volunteering and entrepreneurial businesses.

 

 

 

Web Page:

https://www.researchgate.net/profile/Tadege_Mihretu_Ayenew

Contact Info:

email: tadegem@di.uoa.gr

Short CV:

Mr. Anastasios-Stavros Charismiadis is a Ph.D candidate in the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens (NKUA). He obtained both his B.Sc. Diploma and M.Sc. in Computer Networking from the same Department. Currently, he works as a researcher, participating in EC-funded research and development projects. He has expertise in cloud infrastructures development as well as in performance monitoring and provisioning.  His research interests include resource allocation schemes and optimization algorithms for network slicing-enabled networks in the 5G and beyond era.

Contact info:

email: anachar@di.uoa.gr

Short CV:

Ms. Anna Zampati received the B.Sc. degree from the Department of Informatics and Telecommunications of the University of Peloponnese, in 2015, and the M.Sc. degree in Signal and Information Processing and Learning from the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens, in 2019. She is currently working toward the Ph.D. degree in the field of network automation using machine learning techniques in 5G networks with the National and Kapodistrian University of Athens.

Contact Info:

email: azampati@di.uoa.gr

Short CV:

Mr. Panagiotis Kostakis obtained his four-year B.Sc. Diploma from the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens (NKUA), and he is currently pursuing his M.Sc. from the Graduate Program of the same department in Economics and Management of Telecommunications and Information Systems. He served as an intern in the ICT Solutions and Pre-Sales branch of OTE S.A. from July 2017 until October 2017. During his studies as an undergraduate, has worked on many projects of university including Software Development in Telecommunication Networks, OS, System Programming and Machine Learning and his dissertation title and aim was Website Development For Experimental Quality Experience Based On VMAF/Netflix Metric. His main interests are: 5G, Core and Access Networks, Management of Telecommunication Networks and Pricing and Methodologies specially in Telecommunications field.

Short CV:

Mr. Christos Milarokostas has graduated from the Department of Informatics and Telecommunications, National and Kapodistrian University of Athens (NKUA), Greece in 2018. He is now pursuing a Master’s degree in the domain of Communications Networks from the same department. He has conducted research studies on signal propagation modeling for Low Power Wide Area Networks and mobile networks. Currently, he works as a junior researcher at the Department of Informatics and Telecommunications, NKUA, targeting at the development of an Internet of Things infrastructure. His research interests include signal propagation, performance of wireless networks and satellites systems, network routing, multiplexing techniques and multiple access schemes in communication networks as well as the integration of intelligent functions in wireless networks.

Short CV:

To be added soon

Short CV:

Professor Christos Xenakis received his B.Sc degree in computer science in 1993 and his M.Sc degree in telecommunication and computer networks in 1996, both from the Department of Informatics and Telecommunications, University of Athens, Greece. In 2004 he received his Ph.D. from the University of Athens (Department of Informatics and Telecommunications). From 1998 – 2001 he was with a Greek telecoms system development firm, where he was involved in the design and development of advanced telecommunications subsystems. From 1996 – 2007 he was a member of the Communication Networks Laboratory of the University of Athens. Since 2007 he is a faculty member of the Department of Digital Systems of the University of Piraeus, Greece, where he currently is a Full Professor and member of the System Security Laboratory. He has participated in numerous projects realized in the context of EU Programs (ACTS, ESPRIT, IST, AAL) as well as National Programs (Greek) and his research interests are in the field of systems, networks and applications security.

Web Page:

http://www.di.uoa.gr/~xenakis

Contact Info:

Phone: +30 210 7275418

Fax: +30 210 7275601

Email: xenakis@di.uoa.gr

Framework

European Commission Horizon 2020 - Marie Skłodowska-Curie Research and Innovation Staff Exchange (RISE)

Start date

1 January 2016

Duration

48 Months

Budget

€ 1 080 000

Short Description

The current paradigm in service provisioning to future communication networks lacks thorough end-to-end interpretation from the quality viewpoint, while the end-users’/customers’ profiles and preferences are mostly not taken into account. The subjective perception of a provided service, known as Quality of Experience (QoE), is one of the most important factors for a user’s decision on retaining the service or giving it up, and the key parameter for enabling advanced customer experience management (CEM). The main objective of CASPER is to combine academic and industrial forces towards leveraging the expected benefits of QoE exploitation in future networks. In particular, CASPER will exploit the most recent approaches in communication networks, such as the Software Defined Networking (SDN) and the Network Functions Virtualisation (NFV), to design and implement a middleware architecture for QoE-driven service provisioning. The architecture will consist of three interlinked modules, one-to-one mapped to the three instrumental functionalities required for the beneficial exploitation of QoE: i) reliable, secure and passive QoE monitoring, ii) efficient, dynamic and objective QoE estimation, and iii) robust and real-time QoE-driven service management. The three modules will be optimised and released as an integrated solution, in order to accelerate the adoption of QoE-driven network service management. The cornerstone of this effort will be a carefully-planned inter-sectorial secondment programme for Experienced Researchers (ERs) and Early Stage Researchers (ESRs). Under this programme, CASPER is expected to foster the exchange of knowledge and strengthen the collaboration among academia and industry through a bidirectional knowledge-sharing approach, where the academic beneficiaries will contribute by conveying their knowledge in QoE analysis and modelling, while industrial beneficiaries will provide their expertise in service development and software implementation.

Web page

http://gain.di.uoa.gr/casper/

Framework

European Commission Seven Framework Programme (FP7) - Marie Curie Industry-Academia Partnerships and Pathways

Start date

1 January 2014

Duration

48 Months

Budget

€ 2 644 518,80

Short Description

Smart energy networks (SENs) are electric systems that use two-way networking technologies, cyber-secure communications technologies, and computational intelligence and control in an integrated fashion to efficiently manage energy consumption with the aim of providing a new electricity grid that is clean, safe, secure, reliable, resilient, efficient, and environmentally sustainable. SENs can be well regarded as a system of many systems, whose design challenges, requirements, and expectations can only be achieved through a holistic analysis, design, and optimization of all its components. In SMART-NRG, we will go beyond state-of-the-art approaches for SENs by introducing an innovative and integrated protocol stack, which will be made of three interlinked and optimized sub-systems: i) reliable communications and networking; ii) smart energy management; and iii) security and protection, which are one-to-one connected to the three key functionalities of SENs. The sub-systems will be studied, optimized, and integrated in a very efficient protocol stack, which will be tested via system level simulations and hardware testbeds, and, eventually, will be integrated into commercial devices.

Web page

gain.di.uoa.gr/smart-nrg

Framework

European Commission Seven Framework Programme (FP7) - Marie Curie Initial Training Networks

Start date

1 September 2012

Duration

48 Months

Budget

€ 3 439 175,96

Short Description

The aim of the CROSSIRE project is to provide forward-looking solutions for Long-Term Evolution-Advanced (LTE-A) network co-existence including aspects ranging from the physical layer such as co-channel interference and cognition to the user perception of the service, i.e., Quality of Experience (QoE). The project will analyze and propose network virtualization solutions for LTE-A networks a technology which is envisioned to transform operation of cellular networks in the years to come. The project will approach the emerging LTE-A networks which will be populated by uncoordinated and vast number of small cells (micro, pico and femtocells) from an architectural and a component level perspective. We primary aim to provide a holistic understanding on issues such as co-channel interference from randomly located small-cells (unplanned deployment), efficient utilization of the scarce spectrum (via cognition), self-organization (SONs) and QoE at the end users under the assumption that LTE-A networks share a common physical infrastructure. The developed architectures, protocols and techniques will be evaluated through system level simulations and theoretical analysis. A meaningful subset of them will be evaluated through hardware proof-of-concept prototyping.

Web page

gain.di.uoa.gr/crossfire

Framework

Ambient Assisted Living (AAL) Joint Programme, Call 2

Start date

1 September 2010

Duration

30 Months

Budget

€ 2,147,151.35

Short Description

The main scope of the PeerAssist project is the conceptualisation, design, implementation and demonstration of a flexible Peer-to-Peer (P2P) platform, which will allow elderly people (not necessarily familiar with ICT technologies) to build virtual communities dynamically based on interests and needs they share. The PeerAssist platform will facilitate establishing on demand ad-hoc communities with friends, family, neighbours, caregivers, facilitators, care providers, etc., based on shared interests and communication needs. The community building and the P2P interaction will be achieved using information extracted from peer roles, profiles and user modelling, context that describes the overall user environment, and the specific request initiated, or service provided, by a peer, all of which are represented semantically in a machine understandable form. An end-user request (query) is first represented semantically and then routed through the network in order to find semantically matching peers.

Web page:

https://cnl.di.uoa.gr/peerassist/index_el.html

Framework

European Commission Horizon 2020 - Marie Curie European Training Networks

Start date

1 January 2017

Duration

48 Months

Budget

€ 3 813 484,32

Short Description

To handle the unprecedented demand for mobile data traffic, different vendors, operators and research programmes have aimed to develop radio access technologies (RATs) that boost physical-layer link capacity, utilize millimeter wave radio, or further densify network topology. Notable steps have also been made towards shifting baseband processing from the (currently) ultra dense network edge to a central location where coordinated resource management will be performed. Nonetheless, the today’s mobile network ecosystem includes vastly heterogeneous, evidently overlapping (in coverage) and fully isolated (in operation) attachment points that still handle most of the functions necessary for mobile data communications independently. Aiming to meet and surpass the requirements set for the 5G and Beyond mobile data network, in SPOTLIGHT we will create a fully-integrated and multi-disciplinary network of Early Stage Researchers (ESRs) that will analyze, design, and optimize the performance of a disruptive new mobile network architecture: the SPOTLIGHT architecture.

This architecture promises to break performance limitations present to the currently loosely inter-connected, resource-fragmented and isolated in operation mobile network ecosystem, by transforming the currently loosely-coupled multitude of heterogeneous and multi-layered RATs to a flat coalition of massively distributed antenna sub-systems that are optimally orchestrated by a cloud-empowered network core. Our primary aim will be to support for the first time self-including yet ultra-reliable radio communications at the edge network. To further reduce response time and enhance network resilience, all functions necessary for mobile communications will be subject of i) massive parallelization in cloud platforms at the network core and ii) big data analysis running on-top of a virtual pool of shared energy, radio, computing and storage resources at the network.

Web page

https://itnspotlight.com

Framework

Operational Program Competitiveness, Entrepreneurship and Innovation: RESEARCH – CREATE – INNOVATE

Start date

4 June 2018

Duration

36 Months

Budget

€ 709.130,00

Short Description

As cities are the driving force of global economic growth, and as urbanization in developing economies is projected to lead 60% of the world’s population (about 4.7 billion people) to live in cities by 2025, a better city infrastructure management that is smart, scalable and secure will play a crucial role in their sustainability and financial autonomy. Already, several cities around the world are a hub of innovation exploiting solutions based on the Internet of Things (IoT). Through “smart city” initiatives and encouragement of entrepreneurship in related fields, various municipalities are experimenting with applications that improve the services offered to their citizens (e.g. smart lights, smart parking systems, smart electric lighting, and pollutant and temperature measurement). More tangible examples include European metropolises such as Barcelona, ​​which have already exploited the potential of smart city services, having achieved remarkable resource savings from the better management of their infrastructure networks. In contrast to the example of Barcelona, ​​Greek cities are ranked in the lowest positions in Europe on the basis of the European smart city model (www.smart-cities.eu) as they lack infrastructure and integrated management systems.

In this context, the CityZen consortium will develop for the first time in Greece an integrated system for the easy installation, the scalable and secure management, as well as the efficient support of smart city applications, providing at the same time two pilot services, one for smart lighting and one for parking management. The resources allocated to this consortium will be devoted to the following: A) Development and integration of original IoT equipment with LoRaWAN networking capability, B) Design and management of a smart infrastructure network, and C) Open innovation platform for vertically integrated IoT services.

Web page

cityzen.3pi-telematics.com

Framework

Operational Program Competitiveness, Entrepreneurship and Innovation: RESEARCH – CREATE – INNOVATE

Start date

31 July 2018

Duration

36 Months

Budget

€ 542.630,00

Short Description

Re-cent aims at developing an integrated service for user-centric digital content delivery in 5G mobile data networks that will be founded on the pillars of a) blockchain based wireless network resource sharing, b) QoE-enhanced video content delivery, c) software-defined networking and d) cache-enabled mobile data networks. This research is being co‐financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH – CREATE – INNOVATE.

Web page

http://fogus.gr/re-cent/

Framework

European Commission Horizon 2020 - Marie Curie European Training Networks

Start date

1 January 2020

Duration

48 Months

Budget

€ 3 917 315,52

Short Description

The 5G mobile network architecture, which is currently consolidated (in terms of network components, technologies and interfaces), reveals a great network performance potential, appealing to different vertical market players. However, this potential cannot be fully harnessed without the appropriate algorithmic innovations and data-driven network automation that will permit full exploitation, global management and end-to-end integration of all the heterogeneous network components and resources. However, despite the rapidly increasing efforts devoted to the consolidation of the core 5G technologies(e.g. 5GPPP phase 2/3 projects), substantial work is still required to meet the IMT-2020 objectives set for the 5G network performance and fully harness the multitude of technological capabilities offered by 5G with minimum human intervention (e.g. through intelligent network automation and control). SEMANTIC aims to answer the aforementioned performance and technological gaps by forming an innovative research and training network for multi-GHz spectrum communications, MEC-empowered service provisioning and end-to-end network slicing, all integrated and jointly orchestrated by forward-looking data-driven network control and automation exploiting the enormous amounts of mobile big data spurred into the mobile data network. In this context, SEMANTIC will form an integrated, multi-disciplinary training network of Early Stage Researchers (ESRs), guided by experienced supervisors, aiming at the creation of highly-trained academic researchers and industrial professionals with a future-proof background on PHY design for multi-GHz communications, end-to-end MEC/RAN integration, slice-enabled connectivity and data-driven network orchestration in the 5G continuum.

Web page

htttp://fogus.gr/SEMANTIC/

Framework

European Commission Horizon 2020 - Marie Skłodowska-Curie Research and Innovation Staff Exchange (RISE)

Start date

1 May 2020

Duration

48 Months

Budget

€ 1 490 400,00

Short Description

The OPTIMIST programme sets the ambitious aim to develop a modular end-to-end service platform tailored to the
optimized delivery of personalised video content in 5G mobile networks, providing one of the first world-wide
implementations of MEC-enabled service provisioning in 5G networks that is fully compatible with the emerging ETSI/3GPP
reference architectures. To achieve this, the OPTIMIST service platform will design and implement different MEC services,
which are currently studied in an isolated fashion in current literature, (e.g. edge network caching exploiting edge storage
resources, video transcoding and data-driven content popularity prediction exploiting edge processing resources, optimized
video content placement and delivery exploiting the new 5G radio capabilities), in the form of virtual network functions
(VNFs) that are instantiated and optimized on-the-fly to construct a video service chain that is designed to meet the
personalized requirements of 5G mobile video consumers. To formalize the integration of MEC capabilities into the operation
of 5G mobile networks, the OPTIMIST service platform will be fully aligned with the existing and forthcoming standardization
activities in the areas of MEC and 5G networks (ETSI MEC and 3GPP); thus, maximizing the impact of the project in the
long-term both in terms of academic results (new methodological tools and algorithmic innovations) and market products
(deliver specific products / services that will enhance the portfolio of industrial partners). To this end, OPTIMIST will leverage
state-of-the-art (SotA) technologies in MEC-empowered service provisioning, data-driven service control and automation,
QoE-driven dynamic adaptive video streaming over HTTP (DASH), GPS-free localization and machine learning (ML) for
wireless communications.

Web page

htttp://fogus.gr/OPTIMIST/