I am an EPSRC Fellow (2015-2020) and Lecturer with the E&EE Dept. at UCL, London. I have been at UCL since 2010, working on several EU and EPSRC projects. Before that, I was with the University of Surrey, CCSR (2008-2010).

My research interests are broadly in the area of networking, with a special focus on future Internet architectures, edge-/fog-computing, resource management, caching and congestion control. More recently, we're investigating issues related to decentralised and distributed Internet architecture, distributed governance and its applicability to edge- and fog-computing, through Distributed Ledger Technology and Blockchains.

A summary of our latest works on Distributed and Decentralised Edge Computing can be found at: DDEC@UCL

News & Highlights

Our "Proof of Prestige" layer-2 consensus algorithm will appear at IEEE ICBC 2019
Michał Krol, Alberto Sonnino, Mustafa Al-Bassam, Argyrios Tasiopoulos, Ioannis Psaras, "Proof-of-Prestige: A Useful Work Reward System for Unverifiable Tasks", 1st IEEE International Conference on Blockchains and Cryptocurrencies (IEEE ICBC), May 2019.
Our work on Spot Pricing for Edge/Fog Computing made it to IEEE TSC!
Argyrios G. Tasiopoulos, Onur Ascigil, Ioannis Psaras, Stavros Toumpis, George Pavlou, "FogSpot: Spot Pricing for Application Provisioning in Edge/Fog Computing", IEEE Transactions on Services Computing (IEEE TSC), January 2019.
I will be the TPC Chair of the ACM ICN 2019 Conference together with John Wroclawski (USC/ISI)
"ACM Conference on Information-Centric Networking" Hong Kong, SAR, China, September 2019
We have organised the DISS Workshop @ NDSS Our ACM ICN 2018 paper received the Best Paper Award! This is the fifth BPA for our group!
Michal Krol, Karim Habak, David Oran, Dirk Kutscher, Ioannis Psaras
“RICE: Remote Method Invocation in ICN” ACM ICN 2018, Boston, September 2018.
We are organising MECOMM'18 -- spread the word Our team has three papers at the ACM ICN 2017 Conference!
"A Keyword-Based ICN-IoT Platform", by Onur Ascigil, Sergi Rene, George Xylomenos, Ioannis Psaras, George Pavlou
"A Native Content Discovery Mechanism for Information-Centric Networks", by Onur Ascigil, Vasilis Sourlas, Ioannis Psaras, George Pavlou
"NFaaS: Named-Function as a Service", by Michal Krol, Ioannis Psaras
I will give a tutorial on ICN at IEEE IM 2017 in Lisbon, Portugal!
"The Information-Centric Networking Challenge from a Network and Resource Management Perspective"
IEEE IM2017, May 2017
I gave a keynote talk on ICN for Community networks at FI4D@CCNC 2017, Las Vegas, Jan 2017.
"The benefits of Information-Centricity for Local Community Networks and Disaster Management - In Support of User-Operated Networks"
2nd International Workshop on Future Internet Architecture for Developing Regions, Jan 2017
Slides available here
Our ACM MobiArch 2016 paper received the Best Paper Award!
Ioannis Psaras, Sergi Rene, Kostantinos V. Katsaros, Nikolaos Bezirgiannidis, Vasilis Sourlas, Sotiris Diamantopoulos, Ioannis Komnios, Vassilis Tsaoussidis, George Pavlou
“Keyword-Based Mobile Application Sharing” ACM MobiArch 2016, New York, October 2016.
Our IEEE LANMAN 2016 paper received the Best Paper Award!
Onur Ascigil, Vasilis Sourlas, Ioannis Psaras and George Pavlou,
“Opportunistic Off-Path Content Discovery in Information-Centric Networks” IEEE LANMAN, Rome, Italy, June 2016.
I gave a tutorial on ICN at ICT 2016 in Thessaloniki, Greece!
"The Information-Centric Networking Challenge: Background, Open Issues and Research Directions"
ICT 2016, May 2016
Our work on Modelling Collaborative Media Streaming will appear in IFIP Networking 2016!
Argyrios G. Tasiopoulos, Ioannis Psaras, Vasilis Sourlas, George Pavlou "Tube Streaming: Modelling Collaborative Media Streaming in Urban Railway Networks", IFIP Networking 2016, May 2016.
Our work on Power Consumption Models for NDN Software Routers made it to IEEE JSAC!
Kaito Ohsugi, Junji Takemasa, Yuki Koizumi, Toru Hasegawa, Ioannis Psaras, "Power Consumption Model of NDN-based Multicore Software Router based on Detailed Protocol Analysis", IEEE Journal on Selected Areas in Communications (IEEE JSAC), Series on Green Communications and Networking, to appear 2016.
Our work on Sharded Caching Systems made it to INFOCOM 2016!
Lorenzo Saino, Ioannis Psaras, George Pavlou, "Understanding Sharded Caching Systems" , IEEE INFOCOM 2016, to appear.
Our IFIP Networking 2015 paper received the Best Paper Award!
Vasilis Sourlas, Leandros Tassiulas, Ioannis Psaras and George Pavlou,
“Information Resilience through User-Assisted Caching in Disruptive Content-Centric Networks” 14th IFIP NETWORKING, Toulouse, France, May 2015.


Room 7.04, Malet Place building
E&EE Department
University College London
Torrington Place
London WC1E 7JE, UK
Tel.: +44 (0)20 3108 9455
Email: i.psaras (at) ucl.ac.uk