"Cooperative Energy Management .in Smart Cities", Keynote in IEEE LatinCom 2020.
“Evolution of converged optical-wireless networks towards 5G network architectures”, IEEE 5G and IoT Thessaloniki Summit 2018, Thessaloniki, Greece, 25th Oct. 2018.
“Cooperative Energy Management in Smart Cities”, Training School 2018 on Emerging Technologies for 5G and Internet of Things, Thessaloniki, Greece, 22nd Oct. 2018.
“Evolution of Fiber Wireless networks towards 5G network architectures”, 11th FITCE Technology Forum, Advanced technologies, optical, 5G, satellite and their role in future developments, Thessaloniki, Greece, 15 Dec. 2017.
“Infrastructure Sharing in 5G wireless networks”, Summer School on Emerging Architectures and Key Technologies for 5G Networks, 29 August 2015 - 2 September 2016.
“Base Stations Switching off Schemes” and “Energyand Spectrum Efficient User Association in 5G HetNets”, Summer School on EmergingArchitectures and Key Technologies for 5G Networks, 19-28 August 2015.
"Green WirelessNetworks from GREENET to 5Gwireless", IEEE TSCGCC Meeting, London 9 Dec. 2015.
“Green Cell Offloading: Challenges and Solutions”, NEWCOM#Workshop: D2D and mmW – New Paradigms for 5G, 27-28/10/2014
“Use of ICT to (sustainable) transport and mobility”, Workshop onKET for sustainable mobility, Barcelona Activa, July 2014.
“An introduction to H2020 and how to writeMarie-Curie proposals”, 7th GREENET seminar, Barcelona, July2014.
“Wireless Sensor Aided Application Scenarios for Pervasive Healthcare” Workshopon Sensor Communications & Technologies, BAN, e-Health Services andStandardization, in conjunction to ISMICT2014, Florence, April 2014.
“Context-Aware Handover Decision for the LTE-Advanced Network of SmallCells”, Cognitive Platform Day 2013, Athens, Greece, 21 June 2013.
"MobilityManagement for Femtocells in LTE-Advanced: Key Aspects, Survey of HandoverDecision Algorithms and Context-Aware Algorithmic Design", FP7 ICT-Acropolis(NoE) Winter School, CTTC, Barcelona - Spain, 15 Feb 2013.
"SIG on the Design and performance optimisation of Green Networking", IEEE TSCGCC Subcommittee Meeting, Anaheim 5 Dec. 2012.
"Energy-efficient Business Models andMobility Management for the LTE-Advanced Femtocell Network", Femto Forum,Networks Group, Wroclaw, Sept. 2012.
"Energy efficientwireless radio networks: The GREENET approach", Future Network & Mobile Summit 2012 - Workshop onGreen Communications and Networks, Berlin, Germany, 4-6 July 2012.
"Energy efficient game theoretic MACpolicies for wireless data dissemination", Flexible Networks Workshopsupported by the UK EPSRC Communication Network, Univ of Surrey, UK, 24-25March 2012.
"Overview of the GREENET project", TRENDworkshop, Ghent, 14-15 February 2012.
"GREENET: An early stage training networkin enabling technologies for GREEN radio", in the COST 1004, 3rd MC andScientific Meeting, Barcelona 8-10 February 2012.
"Energy-EfficientMobility Management for the Integrated Macrocell-Femtocell LTE Network",Femto Winter School, Barcelona, Spain, 6-10 February 2012.
"Overview of MAC layer protocols and keyissues of GREENET project", in theworkshop Advanced broadband European architectures organized by the HelenicTelecommunications Company (OTE) and FITCE, Athens, 20 December 2011.
"Green Wireless Radio Networks: the GREENET approach", in the King´sCollege, London 10 November 2011.
"GREENET: An early stage training networkin enabling technologies for GREEN radio", in the 2ndInternational COST 0902 Workshop, Barcelona 5-7 October 2011.
"Energy efficient wireless networks", inthe Department of Computer and Telecommunication Engineering University ofWestern Macedonia, 7 June 2011.
"A Distributed Queuing MAC for WSNs", inthe Department of Computer and Telecommunication Engineering University ofWestern Macedonia, 20/04/10.
"MAC protocols for cooperativewireless networks: Analysis and Implementation", in the Master on “Technologies andmanagement of information and communication systems” in the Department ofInformation and Communication Systems Engineering University of the Aegean,19/04/10.
"MAC protocols for cooperativewireless networks: Analysis, Validation and Implementation", Department of Computer and Telecommunication Engineering Universityof Western Macedonia, 7/4/09.
"Multi-antenna multi-user WLAN systems: PHY and MAC issues", Infineon,Munich on 20/11/08
"Artemis and e-mobility technology platforms", in the workshop “InternationalPlatforms and Innovative products”. Thessaloniki on 25/6/08
"The 802.11n Standard", in the I Foro WiF de RedIRIS,Barcelona on 22/4/08.
"Alow cost Bluetooth system for museums visitors", in the workshop Industry-Research-Innovation: thepromotion, Thessaloniki on 25/11/04.