Communication Networks

Research in the area of communication networks should develop following areas:

Wired communication networks, which are the core of the networks including Internet. The main interest here is to Ethernet technologies, Optical communication, but also routing and switching
Wireless technologies going from WiFi through Internet of Things technologies (e.g. LoRa) to mobile networks. The latest submit-ted project is oriented to 5G networks.
Architecture for efficient content delivery - Content Delivery networks - CDN and advanced architectures based on Software De-fined Networking - SDN and IP Multimedia Subsystem - IMS. The delivery in efficient manner includes virtualization using Network Function Virtualization - NFV.

The topic along whole research is security, which is omnipresent in ICT. Formal approach used for research includes mainly graph theory and Petri Nets.

Keywords:
Content delivery, Internet of Things, Mobile Networks, Open Networking Foundation, Software Defined Networking, Network Function Virtualization, 5G ecosystem

	Ivan Kotuliak Professor e-mail: ivan.kotuliak[at]stuba.sk website			Peter Trúchly Associate Professor e-mail: peter.truchly[at]stuba.sk website
Research interest lies at network performance, including NGN architecture, wireless and mobile networking, Internet of Things and Future Internet, security. In his research, he focus on architecture approach and system performance using Markov Chains and Petri Nets.He has been author and co-author of more than sixty scientific papers and leads and participates on several international and national research projects.			Research interest lies at Software Defined Networking and its application in IoT, transport protocols performance in wireless (and satellite) networks, and traffic routing optimisation in IoT.

	Dominik Macko Associate Professor e-mail: dominik.macko[at]stuba.sk website			Pavol Helebrandt Assistant Professor e-mail: pavol.helebrandt[at]stuba.sk website
Research interest lies at digital-systems design automation, system-level specification, power optimization and estimation, and low-power communications connected with the Internet of Things.			Research interest lies at software defined networking, routing, design and management optimization in communication networks, network security, primarily focuses on utilization of blockchain and secure management of networks.

	Michal Ries Assistant Professor e-mail: michal.ries[at]stuba.sk website			Rastislav Bencel Assistant Professor e-mail: rastislav.bencel[at]stuba.sk website
Research interest lies at technology transfer and network performance, including Software Defined Networking SDN, wireless and mobile networking, Internet of Things. He has been author and co-author of more than 50 scientific papers.			Research interest lies at Software Defined Networking SDN, wireless communication in SDN, blockchain technology, Internet of Things and handover in IEEE 802.11 networks primarily handover optimization in SDN architecture.

Selected recent publications

KOŠŤÁL, Kristián - HELEBRANDT, Pavol - BELLUŠ , Matej - RIES, Michal - KOTULIAK, Ivan.
Management and Monitoring of IoT Devices Using Blockchain.
Sensors 19, no. 4 (2019): 856.

HELEBRANDT, Pavol - BELLUS, Matej - RIES, Michal - KOTULIAK, Ivan - KHILENKO, Vladimir.
Blockchain Adoption for monitoring and management of enterprise networks.
Proceedings of 2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON). Vancouver, BC 1-3 November 2018, pp. 1221-1225.

MASTIĽAK, Lukáš - GALINSKI, Marek - KOTULIAK, Ivan - RIES, Michal.
Improved Smart Gateway in IoT.
2018 16th International Conference on Emerging eLearning Technologies and Applications (ICETA), Stary Smokovec, 2018, pp. 349-354.

CSENGÓDY, Zoltán - MACKO, Dominik - JELEMENSKÁ, Katarína.
Automated Evaluation of a Network Device Configuration.
2018 16th International Conference on Emerging eLearning Technologies and Applications (ICETA), Stary Smokovec, 2018, pp. 99-104.

PULLMANN, Jakub - MACKO, Dominik.
Network Tester: A Generation and Evaluation of Diagnostic Communication in IP Networks.
2018 16th International Conference on Emerging eLearning Technologies and Applications (ICETA), Stary Smokovec, 2018, pp. 451-456.

VALACH, Alexander - MACKO, Dominik.
Exploration of the LoRa Technology Utilization Possibilities in Healthcare IoT Devices.
2018 16th International Conference on Emerging eLearning Technologies and Applications (ICETA), Stary Smokovec, 2018, pp. 623-628.

TRÚCHLY, Peter - MEDVECKÝ, Martin - PODHRADSKÝ, Pavol - VANČO, Marek.
Virtual Reality Applications in STEM Education.
2018 16th International Conference on Emerging eLearning Technologies and Applications (ICETA), Stary Smokovec, 2018, pp. 597-602.

MEDVECKÝ, Martin - VARGIC, Radoslav- LONDÁK, Juraj - PODHRADSKÝ, Pavol - TRÚCHLY, Peter.
Integration of Virtual SDN and NFV Laboratory with NEWTELP Platform.
2018 International Symposium ELMAR, Zadar, 2018, pp. 15-18.

BENCEL, Rastislav - KOŠŤÁL, Kristián - KOTULIAK, Ivan - RIES, Michal.
Common SDN control channel for seamless handover in 802.11.
In WD 2018. 10th Wireless Days Conference, April 3-5, 2018, Dubai UAE. 1.

KOŠŤÁL, Kristián - BENCEL, Rastislav - RIES, Michal - KOTULIAK, Ivan.
Performance evaluation of SDN WLAN architecture.
In WMNC 2018. The Proceedings of the 2018 11th IFIP Wireless and Mobile Networking Conference, September 3-5, 2018, Prague, Czech Republic. 1.

KOVÁČIK, Tomáš - BENCEL, Rastislav - MATO, Jan- BRONIŠ, Roman - TRÚCHLY, Peter - KOTULIAK, Ivan.
Enhanced hybrid TV platform with multiscreen, advanced EPG and recommendation enablers.
Journal of Electrical Engineering 68, no. 3 (2017): 224-234.

ŠULÁK, Viktor - HELEBRANDT, Pavol - KOTULIAK, Ivan.
Performance analysis of openflow forwarders based on routing granularity in openflow 1.0 and 1.3.
Proceedings 19th Conference of Open Innovations Association FRUCT. Jyvaskyla, Finland 7-11 November 2016, pp. 236-241.

LEVY, David - KOTULIAK, Ivan.
WLAN Power saving using packet overhearing reduction.
Telecommunication Systems. Vol. 61, iss. 1 (2016), pp. 43-57. ISSN 1018-4864.

LEVY, David - KOTULIAK, Ivan - TRÚCHLY, Peter.
WLAN performance improvement by header compression and packet overhearing reduction.
Journal of Electrical Engineering. Vol. 65, no. 4 (2014), pp. 203-212. ISSN 1335-3632.

BINDER, Andrej - BOROS, Tomáš - KOTULIAK, Ivan.
A SDN Based Method of TCP Connection Handover.
Information and communication technology : Third IFIP TC 5/8 International Conference, ICT-EurAsia 2015, and 9th IFIP WG 8.9 Working Conference, CONFENIS 2015, Held as Part of WCC 2015, Daejeon, Korea, October 4-7, 2015, proceedings. 1. vyd. Cham : Springer, 2015, pp. 13-19. ISBN 978-3-319-24314-6.

BURDA, Kamil - NAGY, Martin - KOTULIAK, Ivan.
Reducing Keepalive traffic in software-defined mobile networks with port control protocol.
Information and communication technology : Third IFIP TC 5/8 International Conference, ICT-EurAsia 2015, and 9th IFIP WG 8.9 Working Conference, CONFENIS 2015, Held as Part of WCC 2015, Daejeon, Korea, October 4-7, 2015, proceedings.

BERNÁT, Dušan - ČIČÁK, Pavel.
Quantitative analysis of the internet topology model.
In ECBS-EERC 2015: IEEE Fourth Eastern European Regional Conference on the Engineering of Computer BasedSystems, 27-28 August 2015 Brno, Czech republic. 1. ed. Los Alamitos IEEE, 2015, Pages 51-58.

NEHÉZ, Martin - BERNÁT, Dušan - KLAUČO, Martin.
Comparison of Algorithms for Near-Optimal Dominating Sets.
Computation in Real-World Networks, In CompSysTech'15. Proceedings of the 16th International Conference on Computer Systems and Technologies CompSysTech '15, Dublin, Ireland, June 25-26, 2015, Proceedings 1. ed. New York, ACM, 2015, Pages 199-206.

NAGY, Martin - KOTULIAK, Ivan.
Utilizing Open-Flow, SDN and NFV in GPRS core network.
Testbeds and Research Infrastructure: Devel-opment of Networks and Communities : 9th International ICST Conference, TridentCom 2014, Guangzhou, China, May 5-7, 2014, Revised Selected Papers. 1. vyd. Cham : Springer, 2014, pp. 184-193. ISBN 978-3-319-13325-6.

ORTIGOSA, Fernando - FERNANDEZ, Sergio - MARIN, Andres - PROSEPIO, Davide - IRIBARND, Borja - ORMAETXEA, Itziar - KOTULIAK, Ivan - KOVÁČIK, Tomáš - MIKOCZY, Eugen - LAHNALAMPI, Timo - KOSKI, Timo - HAKALA, Piritta.
Interoperability among different IMS cores.
Testbeds and Research Infrastructure: Development of Networks and Communities : 9th International ICST Conference, TridentCom 2014, Guangzhou, China, May 5-7, 2014, Revised Selected Papers. 1. vyd. Cham : Springer, 2014, pp. 753-764. ISBN 978-3-319-13325-6.

Important recent research results and research projects

FP7 research project Hybrid Broadband Broadcast - Next (HBB-Next)
Multimodal Interaction Robot-Human using Cloud Ressources, ongoing, National APVV project
Methods and algorithms for improving efficiency and multimedia content delivery in IP networks, ongoing, national VEGA project

Industry collaboration

Pilot implementation and integration. Example is Virtual Customer Premises Equipment (vCPE) - SDN based CPE pilot project with telecommunication operator designed and proof-of-concept solution by the team of FIIT STU (including professors, PhD students and master students).
Courses usually based on latest research (SDN, NFV), but also on CISCO Networking Academy courses.