GAIN (Green, Adaptive, and Intelligent Networking) is a research group inside the Communication Networks Laboratory (CNL) 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.
The Group Members
Faculty members:
Senior researchers(PhD)
Researchers
Co-operating faculty members
R&D Areas
Adaptive network architectures and systems
Cross-layer techniques
Energy efficiency and energy saving
Energy-efficient mobility
Flexible resource allocation
Cognitive networks
Wireless sensor networks
Intelligent security
Smart grid technologies
Quality of Experience support
Interference management
Device-to-device communications
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. 90111, 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.
- 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.
- 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 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.
- 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, “Multi-tier and multi-band heterogeneous wireless networks with black hole attacks”, IEEE Global Communications Conference (IEEE GLOBECOM) 2019, Waikoloa, Hawaii, USA, December 2019.
- 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.
- 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.
- 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.
- Z Vujicic, J Rodriguez, N Passas, R Iqbal, T Maniak, E Datsika, J Vardakas, C Karyotis, S A Busari, and C Verikoukis, “EXPLORA Novel Holistic Numerical Platform for Converged Optical-Wireless B5G Networks”, IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (IEEE CAMAD) 2020, Virtual Conference, September 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.
- S Narayanan, D Tsolkas, N Passas, and L Merakos, “ADAM: An Adaptive Access Mechanism for NB-IoT Systems in the 5G Era”, IEEE Access Journal, vol. 9, August 2021.
- E Liotou, D Tsolkas, G Kalpaktsoglou, S Tennina, L Pomante, and N Passas, “The CASPER user-centric approach for advanced service provisioning in mobile networks”, Elsevier Microprocessors and Microsystems Journal, vol. 77, September 2020.
- E Liotou, A Alexiou, N Passas, and L Merakos, “QoE-centric implementation of SDN platform for Open-Flow-based network path selection”, IEEE International Mediterranean Conference on Communications and Networking (IEEE MeditCom) 2021, Hybrid Conference, September 2021.
- D Xenakis, A Tsiota, C Koulis, C Xenakis, and N Passas, “Contract-less Mobile Data Access Beyond 5G: Fully-decentralized, high-throughput and anonymous asset trading over the Blockchain”, IEEE Access Journal, vol. 9, May 2021.
- T Ayenew, D Xenakis, N Passas, and L Merakos, “Cooperative Content Caching in MEC-enabled Heterogeneous Cellular Networks”, IEEE Access Journal, vol. 9, July 2021.
2 J Rodriguez, C Verikoukis, J Vardakas, and N Passas, editors, “ Enabling 6G Mobile Networks , Springer, ISBN: 978-3-030-74648-3, September 2021.
- 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.
- S Narayanan, O Liberg, A Hïglund, D Tsolkas, N Passas, and L Merakos, “Sidelink optimizations for layer-3 based IoT Relaying in 5G NR”, IEEE Internet of Things Magazine, vol. 5, issue 2, June 2022.
- E Liotou, K Chatzieleftheriou, G Christopdoulou, N Passas, and L Merakos, “Emulation of HTTP Adaptive Video Streaming over SDN”, IEEE International Mediterranean Conference on Communications and Networking (IEEE MeditCom) 2021, Hybrid Conference, September 2021.
- D Xenakis, A Tsiota, and N Passas, “Admission control and end-to-end slicing for video streaming in MEC-empowered cellular networks”, IEEE Global Communications Conference (IEEE GLOBECOM) 2022, Rio de Janeiro, Brazil, December 2022.
- T Ayenew, D Xenakis, L Alonso, N Passas, and L Merakos, “Demand-aware Cooperative Content Caching in 5G/6G Networks with MEC-enabled Edges”, IEEE Networking Letters, vol. 4, no. 3, September 2022.
- S -A Charismiadis, D Tsolkas, N Passas, D Xenakis, and L Merakos, “Metaheuristics as enablers for VNF scheduling in the Network Slice set up process”, Journal of Communications and Networks, vol. 24, issue 6, December 2022.
- C Milarokostas, D Tsolkas, N Passas, and L Merakos, “A Comprehensive Study on LPWANs With a Focus on the Potential of LoRa/LoRaWAN Systems”, IEEE Communications Surveys and Tutorials, vol. 25, issue 1, 1st quarter 2023.
News
Useful links
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