Journals, Magazines, Book Chapters

Under Submission/Review

* L. Vigneri, T. Spyropoulos, and C. Barakat, “Low Cost Video Streaming through Mobile Edge Caching: Modelling and Optimization,” under revision in  IEEE Trans. on Mobile Computing,  2018.

* N. Sapountzis, T. Spyropoulos, N. Nikaein, U. Salim, “Hierarchical Optimization of User Association and Flexible TDD Allocation for Access and Backhaul Networks ,” under revision in IEEE Trans. on Mobile Computing, 2018.

* L. Vigneri et al., “Model-Driven Artificial Intelligence for Online Network Optimization,” submitted to IEEE Network Magazine.

Accepted

* L. Vigneri, T. Spyropoulos, and C. Barakat, “Quality of Experience-Aware Mobile Edge Caching through a Vehicular Cloud,” to appear in  IEEE Trans. on Mobile Computing,  2018.

* T. Giannakas, P. Sermpezis, T. Spyropoulos, and L. Vigneri, “Soft Cache Hits: Improving Performance through Recommendation and Delivery of Related Content,” to appear in IEEE JSAC special issue on Caching for Communication Systems and Networks, 2018.

* P. Matzakos, T. Spyropoulos, and C. Bonnet, “Joint Scheduling and Buffer Management Policies for DTN Applications of Different Traffic Classes,” to appear in IEEE Trans. on Mobile Computing, 2018.

* G. Arvanitakis, T. Spyropoulos, and F. Kaltenberger, “An Analytical Model for Flow-level Performance in Heterogeneous Wireless NetworksIEEE Trans. on Wireless Communications 17(3): 1488-1501, 2018.

* Fidan Mehmeti, Thrasyvoulos Spyropoulos, “Performance Analysis, Comparison and Optimization of Interweave and Underlay Spectrum Access in Cognitive Radio Networks ,” to appear in IEEE Transactions on Vehicular Technology. 2018

* N. Sapountzis, T. Spyropoulos, N. Nikaein, U. Salim, “User Association in HetNets: Impact of Traffic Differentiation and Backhaul LimitationsACM/IEEE Transactions on Networking, 25(6): 3396-3410, 2017.

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, "Delay analysis of epidemic schemes in sparse and dense heterogeneous contact environments", IEEE Transactions on Mobile Computing, 16(9): 2464-2477, 2017.

* Fidan Mehmeti, Thrasyvoulos Spyropoulos, “Performance analysis of mobile data offloading in heterogeneous networksIEEE Transactions on Mobile Computing, 16(2): 482-497, 2017.

* Fidan Mehmeti, Thrasyvoulos Spyropoulos, “Performance modeling, analysis and optimization of delayed mobile data offloading under different service disciplinesACM/IEEE Transactions on Networking,  25(1): 550-564, 2017.

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, "Effects of content popularity in the performance of content-centric opportunistic networking: An analytical approach and applications", IEEE/ACM Transactions on Networking, 24(6): 3354-3368, 2016.

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, "Modelling and analysis of communication traffic heterogeneity in opportunistic networks", in IEEE Transactions on Mobile Computing, 14(11): 2316-2331, 2015.

* Andreea Picu, Thrasyvoulos Spyropoulos, “DTN-Meteo: Forecasting the Performance of DTN Protocols Under Heterogeneous MobilityIEEE/ACM Transactions on  Networking, 23(2): 587-602, 2015.

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, “Understanding the effects of social selfishness on the performance of heterogeneous opportunistic networks,” Elsevier Computer Communications, Special Issue on Opportunistic Communications, Volume 48, pages 71-83, April 2014.

* Kaijie Zhou, Navid Nikaein, Thrasyvoulos Spyropoulos, “LTE/LTE-A Discontinuous Reception Modeling for Machine Type CommunicationsIEEE Wireless Communication Letters 2(1): 102-105, 2013

* Theus Hossmann, George Nomikos, Thrasyvoulos Spyropoulos, Franck Legendre: “Collection and analysis of multi-dimensional network data for opportunistic networking research”. Computer Communications 35(13): 1613-1625 (2012)

* Mikko Pitkδnen, Teemu Kδrkkδinen, Jφrg Ott, Marco Conti, Andrea Passarella, Silvia Giordano, Daniele Puccinelli, Franck Legendre, Sacha Trifunovic, Karin Anna Hummel, Martin May, Nidhi Hegde, Thrasyvoulos Spyropoulos, “SCAMPI: service platform for social aware mobile and pervasive computing,”. ACM Computer Communication Review (CCR) 42(4): 503-508 (2012)

* Amir Krifa, Chadi Barakat, Thrasyvoulos Spyropoulos, “Message Drop and Scheduling in DTNs: Theory and Practice”, IEEE Transactions on Mobile Computing. 11(9): 1470-1483, 2012.

* G.Parissidis, M. Karaliopoulos, T. Spyropoulos, B. Plattner, “Interference-aware Routing in Wireless Multihop Networks”, in IEEE Transactions on Mobile Computing. 10(5): 716-733, 2011.

* Thrasyvoulos Spyropoulos, Naveed Bin Rais, Thierry Turletti, Katia Obraczka, and Thanos Vasilakos, “Routing for Disruption Tolerant Networks: Taxonomy and Design,” in ACM/Kluwer Wireless Networks (WINET). 2349-2370, 2010.

* Thrasyvoulos Spyropoulos, Thierry Turletti, and Katia Obrazcka, “Routing in Delay Tolerant Networks Comprising Heterogeneous Populations of Nodes”, IEEE Transaction on Mobile Computing, Vol. 8, No. 8, Aug. 2009. 

*  Wei-Jen Hsu, Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Ahmed Helmy, "Modeling Spatial and Temporal Dependencies of User Mobility in Wireless Mobile Networks," ACM/IEEE Transactions on Networking, Vol.17, No. 5, Oct. 2009.

* D. Schatzmann, M. Burkhart, T. Spyropoulos: “Inferring Spammers in the Network Core,” to appear in Springer-Verlang Lecture Notes in Computer Science (LNCS),(from PAM’09), 2009

* Thrasyvoulos Spyropoulos, Cauligi S. Raghavendra, "Efficient Media Access using Adaptive Array Antennas," accepted at Ad Hoc Networks Journal, Elsevier (pending minor revisions), 2008.

* Thrasyvoulos Spyropoulos, Apoorva Jindal, and Konstantinos Psounis, “An Analytical Study of Fundamental Mobility Properties for Encounter-based Protocols”, in International Journal of Autonomous and Adaptive Communications Systems (IJAACS), Vol. 1, No. 1-2, July 2008.

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Efficient Routing in Intermittently Connected Mobile Networks: The Multi-copy Case,”  in ACM/IEEE Transactions on Networking, Feb. 2008.

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Efficient Routing in Intermittently Connected Mobile Networks: The Single-copy Case in ACM/IEEE Transactions on Networking, Feb. 2008.

* Thrasyvoulos Spyropoulos, Serge Fdida, and Scott Kirkpatrick, "Future Internet: Fundamentals and Measurement," in ACM Computer Communications Review (CCR) (invited), April 2007.

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, Viktor Prasanna, "A Distributed Algorithm for Waking-up in Heterogeneous Sensor Networks," Springer-Verlag Lecture Notes in Computer Science (LNCS) 2634 (from IPSN’03), April 2003. 

Conference Papers

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* N. Sapountzis, T. Spyropoulos, N. Nikaein, U. Salim, “Joint Optimization of User Association and Dynamic TDD for Ultra-Dense Networks,” in Proc. of IEEE INFOCOM 2018, Honolulu, CA, Apr. 2018.

* N. Liakopoulos, G. Paschos, T. Spyropoulos, “Robust User Association for Ultra Dense Networks,” in Proc. of IEEE INFOCOM 2018, Honolulu, CA, Apr. 2018.

* L. Vigneri, T. Spyropoulos, and C. Barakat, “A Two-Step Chunk-Based Algorithm for Offloading Streaming Traffic through a Vehicular Cloud,” in Proc. of IEEE SPAWC 2018.

* T. Giannakas, P. Sermpezis, and T. Spyropoulos, “Show me the Cache: Optimizing Cache-Friendly Recommendations for Sequential Content Access,” in Proc. of  IEEE WoWMoM 2018.

* K. Alexandris, C.Y. Chang, N. Nikaein, T. Spyropoulos, “Multi-connectivity resource allocation with limited backhaul capacity in evolved LTE,” in Proc. of IEEE WCNC 2018

* P. Sermpezis, T. Spyropoulos, L. Vigneri, T. Giannakas, “Femto-Caching with Soft Cache Hits: Improving Performance with Related Content Recommendation,” in Proc. of IEEE GLOBECOM 2017

* C. Y. Chang, N. Nikaein, R. Knopp, T. Spyropoulos, S. Kumar, “FlexCRAN: A flexible functional split framework over ethernet fronthaul in Cloud-RAN,” in Proc. of IEEE ICC 2017

* A. Tuholukova, G. Neglia, T. Spyropoulos, “Optimal cache allocation for femto helpers with joint transmission capabilities,” in Proc. of IEEE ICC 2017

* L. Vigneri, S. Pecoraro, T. Spyropoulos, C. Barakat, “Per-Chunk Caching for Video Streaming from a Vehicular Cloud,” in Proc. of ACM MOBICOM workshop (CHANTS), 2017

* L. Vigneri, T. Spyropoulos, C. Barakat, “Quality of Experience-Aware Mobile Edge Caching through a Vehicular Cloud,” in Proc. of ACM MSWiM 2017

* K. Alexandris, C. Y. Chang, K. Katsalis, N. Nikaein, T. Spyropoulos, ”Utility-Based Resource Allocation under Multi-Connectivity in Evolved LTE,” in Proc of IEEE VTC-Fall 2017

* P. Sermpezis, T. Spyropoulos, “Offloading on the edge: Performance and cost analysis of local data storage and offloading in HetNets,” in Proc. of IEEE WONS 2017

* G. Arvanitakis, T. Spyropoulos, F. Kaltenberger, “An Analytical Model for Flow-Level Performance of Large, Randomly Placed Small Cell Networks,” in Proc. of IEEE GLOBECOM 2016

* C.Y. Chang, R. Schiavi, N. Nikaein, T. Spyropoulos, C. Bonnet, “Impact of packetization and functional split on C-RAN fronthaul performance, “in Proc of IEEE ICC 2016

* Chia-Yu Chang, Konstantinos Alexandris, Navid Nikaein, Kostas Katsalis, Thrasyvoulos Spyropoulos, “MEC architectural implications for LTE/LTE-A networks,” in Proc. of ACM Mobicom workshop (MobiArch), 2016.

* L. Vigneri, T. Spyropoulos, C. Barakat, “Streaming content from a vehicular cloud,“ in Proc. of ACM Mobicom workshop (CHANTS), 2016.

* T. Spyropoulos, P Sermpezis, “Soft cache hits and the impact of alternative content recommendations on mobile edge caching, “ in Proc. of ACM Mobicom workshop (CHANTS),  2016.

* Luigi Vigneri, Thrasyvoulos Spyropoulos, Chadi Barakat, “Storage on wheels: Offloading popular contents through a vehicular cloud,” in Proc. of IEEE WoWMoM 2016

* C. Chang, R. Schiavi, N. Nikaein, T. Spyropoulos, C. Bonnet, “Impact of Packetization and Functional Split on C-RAN Fronthaul Performance,” in Proc. of IEEE ICC 2016, Malaysia.

* N. Sapountzis, T. Spyropoulos, N. Nikaein, U. Salim, “Optimal Downlink and Uplink User Association in Backhaul-limited HetNets,” in Proc. of IEEE INFOCOM 2016, San Francsico, CA, Apr. 2016.

* K. Alexandris, N. Sapountzis, N. Nikaein, T. Spyropoulos, “Load-aware Handover Decision Algorithm in Next-generation HetNets,” in Proc. of IEEE WCNC 2016, Doha, Qatar. 

* P. Matzakos, T. Spyropoulos, and C. Bonnet, “Buffer Management Policies for DTN Applications with Different QoS Requirements,” in Proc. of  IEEE GLOBECOM 2015, San Diego, CA, Dec. 2015.

* N. Sapountzis, T. Spyropoulos, N. Nikaein, and U. Salim, “An Analytical Framework for Optimal Downlink-Uplink User Association in HetNets with Traffic Differentiation,” in Proc. of  IEEE GLOBECOM 2015, San Diego, CA, Dec. 2015.

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, "Inferring Content-Centric Traffic for Opportunistic Networking from Geo-location Social Networks", IEEE WoWMoM (AOC workshop), to appear, June 2015.

* Esa Hyytiδ, Thrasyvoulos Spyropoulos, and Joerg Ott, “Offload (Only) the Right Jobs: Robust Offloading Using the Markov Decision Processes,” in Proc. of IEEE WoWMoM 2015, Boston, Massachusetts, June 2015. (best paper runner-up)

* Nikolaos Sapountzis, Stylianos Sarantidis, Thrasyvoulos Spyropoulos, Navid Nikaein, Umer Salim, “Reducing the energy consumption of small cell networks subject to QoE constraints,” in Proc. of IEEE GLOBECOM 2014, Austin, Texas, December 2014

* Fidan Mehmeti, Thrasyvoulos Spyropoulos, “Is it worth to be patient? Analysis and optimization of delayed mobile data offloading,” in Proc. of IEEE INFOCOM 2014, Toronto, Canada, May 2014

* Pavlos Sermpezis, Thrasyvoulos Spyropoulos, “Not all content is created equal: effect of popularity and availability for content-centric opportunistic networking,”  in Proc. of ACM MobiHoc 2014, Philadelphia, Pennsylvania, August 2014.

* Hicham Khalife, Vania Conan, Jeremie Leguay, Thrasyvoulos Spyropoulos, “Point to multipoint transport in multichannel wireless environments,” in Proc. of IEEE WCNC 2013.

* Fidan Mehmeti, and Thrasyvoulos Spyropoulos, “Who Interrupted Me? Analyzing the Effect of PU Activity on Cognitive User Performance,” in Proceedings of IEEE ICC 2013.

* Fidan Mehmeti, and Thrasyvoulos Spyropoulos, “To Scan or Not To Scan: The Effect of Channel Heterogeneity on Optimal Scanning Policies,” in Proc. of IEEE SECON 2013.

* Fidan Mehmeti, and Thrasyvoulos Spyropoulos, “Performance Analysis of "On-the-spot" Mobile Data Offloading,” in Proceedings of IEEE GLOBECOM 2013.

* Pavlos Sermpezis, and Thrasyvoulos Spyropoulos, “Information Diffusion in Heterogeneous Networks: The Configuration Model Approach,” in Proceedings of IEEE INFOCOM Workshop on Network Science in Communication (NetSciCom), Torino, Italy, April 2013.

* Francisco Santos, Benjamin Ertl, Chadi Barakat, Thrasyvoulos Spyropoulos, Thierry Turletti, “CEDO: Content-Centric Dissemination Algorithm for Delay-Tolerant Networks,” in Proceedings of ACM MSWIM 2013.

* Best Paper Award: Andreea Picu, Thrasyvoulos Spyropoulos and Theus Hossmann "An Analysis of the Information Spreading Delay in Heterogeneous Mobility DTNs" Proceedings of IEEE WoWMoM 2012, IEEE, San Francisco, CA, USA, pages 1-9, June 2012.

* Andreea Picu and Thrasyvoulos Spyropoulos "Forecasting DTN Performance under Heterogeneous Mobility: The Case of Limited Replication" Proceedings of IEEE SECON 2012 (~30% acceptance), IEEE, Seoul, South Korea, pages 1-9, June 2012.

* Andreea Picu and Thrasyvoulos Spyropoulos, "Performance of Distributed Algorithms in DTNs: Towards an Analytical Framework for Heterogeneous Mobility", Proceedings of IEEE GLOBECOM 2011, IEEE, Houston, TX, USA, pages 1-6, December 2011.

* Amir Krifa, Chadi Barakat, Thrasyvoulos Spyropoulos, “MobiTrade: Trading Content in Disruption Tolerant Networks”, in proceedings of ACM Mobicom Workshop on Challenged Networks (CHANTS), Las Vegas, September 2011

* Theus Hossmann, Thrasyvoulos Spyropoulos,  and Franck Legendre, “Putting Contacts into Context: Mobility Modeling beyond Inter-Contact Times,” in ACM MobiHoc 2011, Paris, May 2011 (nominated for best paper award)

* Theus Hossmann, Thrasyvoulos Spyropoulos and Franck Legendre, “A Complex Network Analysis of Human Mobility,” in IEEE NetSciCom 11 (co-located with IEEE Infocom 2011), Shanghai, China, April 2011.

* Theus Hossmann, Franck Legendre, George Nomikos and Thrasyvoulos Spyropoulos, “Stumbl: Using Facebook to Collect Rich Datasets for Opportunistic Networking Research,” The Fifth IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 11), Lucca, Italy, June 2011.

* Dominik Schatzmann, Wolfgang Mόhlbauer, Thrasyvoulos Spyropoulos and Xenofontas Dimitropoulos, "Digging into HTTPS: Flow-Based Classification of Webmail Traffic," in ACM Internet Measurement Conference (IMC  2010), Melbourne, Australia, Nov. 2010.  (acceptance = 20%)

* Andreea Picu and Thrasyvoulos Spyropoulos, "Distributed Stochastic Optimization in Opportunistic Networks: The Case of Optimal Relay Selection", in ACM CHANTS 2010, Chicago, IL, Sep. 2010.

* Leo Den Hartog, Thrasyvoulos Spyropoulos, and Franck Legendre, “Using Public Transportation as a DTN Backbone: Mobility Properties and Performance  Analysis,” in Proceedings of IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC'10), June 2010.

* Theus Hossmann, Thrasyvoulos Spyropoulos, and Franck Legendre, “Know Thy Neighbor: Towards Optimal Mapping of Contacts to Social Graphs for DTN Routing,” in Proceedings of IEEE INFOCOM 2010, San Diego, CA, March 2009. 

* Theus Hossmann, Franck Legendre, Thrasyvoulos Spyropoulos, “From Contacts to Graphs: Pitfalls in Using Complex Network Analysis for DTN Routing,” in Proceedings of IEEE International Workshop on Network Science For Communication Networks (NetSciCom 09), co-located with INFOCOM 2009, Rio de Janeiro, Brazil, April, 2009

* Andreea Picu and Thrasyvoulos Spyropoulos, “Minimum Expected *-cast Time in DTNs,” (invited paper) in Proceedings of BIONETICS 2009, Avignon, France, Dec. 2009.

* Simon Heimlicher, Hanoch Levy, Merkouris Karaliopoulos, and Thrasyvoulos Spyropoulos, “Leveraging Partial Paths in Partially-connected Networks,“ in Proceedings of IEEE INFOCOM 2009.

* Dominik Schatzmann, Martin Burkhart, and Thrasyvoulos Spyropoulos, "Inferring Spammers in the Network Core", in Proceedings of Passive and Active Measurements Conference (PAM'09), 2009.

* Amir Krifa, Chadi Barakat, Thrasyvoulos Spyropoulos, “Optimal Buffer Management Policies for Delay Tolerant Networks,” in Proceedings of IEEE SECON 2008, June 2008. (acceptance = 20%, best paper award)

* G.Parissidis, M. Karaliopoulos, M. May, T. Spyropoulos, B. Plattner, “Interference in Wireless Multihop Networks: A Model and its Experimental Evaluation,” in Proceedings of IEEE WoWMoM 2008, June 2008. ("noteworthy contribution").

* Amir Krifa, Chadi Barakat, Thrasyvoulos Spyropoulos, “An Optimal Joint Scheduling and Drop Policy for Delay Tolerant Networks”, in Proceedings of IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC'08), June 2008.

* Wei-Jen Hsu, Thrasyvoulos Spyropoulos, Konstantinos Psounis and Ahmed Helmy, “Modeling Time-variant User Mobility in Wireless Mobile Networks,” in Proceedings of IEEE INFOCOM 2007, May 2007.

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Spray and Focus: Efficient Mobility-Assisted Routing for Heterogeneous and Correlated Mobility in Proceedings of IEEE PERCOM 2007, on the International Workshop on Intermittently Connected Mobile Ad hoc Networks (ICMAN), March 2007.

* Thrasyvoulos Spyropoulos, Thierry Turletti, and Katia Obrazcka, “Utility-based Message Replication for Intermittently Connected Heterogeneous Wireless Networks”, in Proceedings of IEEE WoWMoM 2007 workshop on Autonomic and Opportunistic Communications (AOC 2007), (INRIA Technical Report RR-6129), June 2007.

*  Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Performance Analysis of Mobility-Assisted Routing,” in Proceedings of  ACM MOBIHOC 2006, May 2006. (acceptance rate  10%)  

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Spray and Wait: An Efficient Routing Scheme for Intermittently Connected Mobile Networksin Proceedings of ACM SIGCOMM workshop on Delay Tolerant Networking (WDTN-05), August 2005. (acceptance rate  22%)

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Single-copy Routing in Intermittently Connected Mobile Networks,” in proceedings of IEEE SECON 2004, October 2004. (acceptance rate 19%).

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, "ADAPT: A Media Access Control Protocol for Mobile Ad Hoc Networks Using Adaptive Array Antennas," Proceedings of IEEE PIMRC 2004, September 2004.

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, "Asymptotic Capacity Bounds for Ad-hoc Networks: The Directional and Smart Antenna Cases," Proceedings of IEEE GLOBECOM 2003, December 2003.

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, "Capacity Bounds for Ad-hoc Networks using Directional Antennas," Proceedings of IEEE ICC 2003, May 2003.

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, Viktor Prasanna, "A Distributed Algorithm for Waking-up in Heterogeneous Sensor Networks," Proceedings of ACM/IEEE IPSN 2003, April 2003. 

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, "Energy Efficient Routing in Ad Hoc Networks with Directional Antennas," Proceedings of IEEE INFOCOM 2002, June 2002. (acceptance rate 16%)

* Thrasyvoulos Spyropoulos, C. S. Raghavendra, "A Token-based Greedy Chain scheduling Algorithm (T-GCSA) for Situation Aware, Long-Range Wireless LANs with Highly Mobile Nodes," Proceedings of  IEEE Aerospace Conference 2002, March 2002.

Other

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* Thrasyvoulos. Spyropoulos, and C. S. Raghacendra, "Analyzing the Effect of Antenna Type and MAC Protocol on Wireless Ad-Hoc Network Capacity," USC Technical Report, 2006.

* Thrasyvoulos Spyropoulos, Konstantinos Psounis, and Cauligi Raghavendra, “Multiple-copy Routing in Intermittently Connected Mobile Networks,” USC Technical report CENG-2004-12, 2004.

* Efficient Media Access and Routing in Wireless and Delay Tolerant Networks, Thrasyvoulos Spyropoulos, Ph.D Thesis, University of Southern California, Los Angeles, Jan 2006.