Research Interests

QoS in computer networks:
  • QoS and energy-efficiency oriented scheduling algorithms for packet networks
  • Performance Evaluation of computer networks
  • Wireless Networks (LTE, LTE Advanced, 5G, Space Networks)
SimuLTE Project
An OMNeT++ based LTE/LTE-Advanced user-plane simulator and simulation model, compatible with the INET Framework.

Publications

Book Chapters

  1. A. Virdis, G. Stea, G. Nardini, "Simulating LTE/LTE-Advanced Networks with SimuLTE", DOI 10.1007/978-3-319-26470-7_5, in: M.S. Obaidat, J. Kacprzyk, T. Ören, J. Filipe, (eds.) "Simulation and Modeling Methodologies, Technologies and Applications", Volume 402 of the series Advances in Intelligent Systems and Computing, pp. 83-105, Springer, ISBN 978-3-319-26469-1, 15 January 2016

International Journals (peer reviewed)

  1. A. Virdis, G. Stea, D. Sabella, M. Caretti, "A distributed power-saving framework for LTE HetNets exploiting Almost Blank Subframes", IEEE Transactions on Green Communications and Networking, DOI 10.1109/TGCN.2017.2714205 (accepted June 2017)
  2. A. Virdis, G. Stea, D. Sabella, M. Caretti, "A practical framework for energy-efficient node activation in heterogeneous LTE networks", Mobile Information Systems, Article ID 2495934, 17 pages, 2017 doi:10.1155/2017/2495934 [Class D]
  3. C. Vallati, A. Virdis, E. Mingozzi, G. Stea, "MEC come home! Connecting things in future smart homes using LTE D2D communications", IEEE Consumer Electronics Magazine, October 2016, pp.77-83, DOI: 10.1109/MCE.2016.2590100
  4. G. Nardini, G. Stea, A. Virdis, D. Sabella, M. Caretti, "Resource allocation for network-controlled device-to-device communications in LTE-Advanced", Springer Wireless Networks, 23(3), pp. 787-804, DOI: 10.1007/s11276-016-1193-3, March 2017 [Class A]
  5. G. Nardini, G. Stea, A. Virdis, D. Sabella, M. Caretti, Practical large-scale coordinated scheduling in LTE-Advanced networks", Springer Wireless Networks, to appear (Accepted 27/3/2015), DOI: 10.1007/s11276-015-0948-6 [Class A]
  6. G. Stea, A. Virdis, "A comprehensive simulation analysis of LTE Discontinuous Reception (DRX)", Elsevier Computer Networks, 73 (2014), pp.22-40, DOI 10.1016/j.comnet.2014.07.014 [Class A]

International Conference Proceedings (peer reviewed)

  1. N. Iardella, G. Nardini, G. Stea, A. Virdis, A. Frangioni, L. Galli, D. Sabella, F. Mauro, G.M. Dell'Aera, M. Caretti, "A testbed for flexible and energy-efficient resource management with virtualized LTE-A nodes", CLEEN 2017, Turin, Italy, 21-22 June 2017
  2. G. Nardini, G. Stea, A. Virdis, A. Frangioni, L. Galli, D. Sabella, G.M. Dell'Aera, "Scalability and energy efficiency of Coordinated Scheduling in cellular networks towards 5G", CLEEN 2017, Turin, Italy, 21-22 June 2017
  3. D. Sabella, P.Serrano, G.Stea, A.Virdis, I. Tinnirello, F. Giuliano, D. Garlisi, P. Vlacheas, P. Demestichas, V. Foteinos, N. Bartzoudis, M. Payarò, A. Medela, "A Flexible and Reconfigurable 5G Networking Architecture Based on Context and Content Information", EuCNC 2017, Oulu, Finland, June 12-15, 2017
  4. N. Iardella, G. Nardini, G. Stea, A. Virdis, L. Galli, A. Frangioni, D. Sabella, F. Mauro, G.M. Dell'Aera, M. Caretti, "Flexible dynamic Coordinated Scheduling in Virtual-RAN deployments", FlexNets 2017, Paris, FR, 20th May 2017
  5. G. Nardini, A. Virdis, G. Stea, "Simulating Device-to-Device Communications in OMNeT++ with SimuLTE: Scenarios and Configurations", 3rd OMNeT++ Community Summit, BRNO, Czech Republic, September 15-16, 2016
  6. A. Virdis, C. Vallati, G. Nardini, "Automating Large-Scale Simulation and Data Analysis with OMNeT++: Lessons Learned and Future Perspectives", 3rd OMNeT++ Community Summit, BRNO, Czech Republic, September 15-16, 2016
  7. G. Nardini, G. Stea, A. Virdis, D. Sabella, M. Caretti, "Broadcasting in LTE-Advanced networks using multihop D2D communications", PIMRC 2016, Valencia, September 7-9, 2016
  8. G. Nardini, A. Virdis, G. Stea, "Modeling X2 backhauling for LTE-Advanced and assessing its effect on CoMP Coordinated Scheduling", IWSLS2 2016, Vienna, July 1st, 2016
  9. A. Virdis, G. Nardini, G. Stea, "Modeling unicast device-to-device communications with SimuLTE", IWSLS2 2016, Vienna, July 1st, 2016
  10. N. Iardella, G. Stea, A. Virdis, D. Sabella, A. Frangioni, "Statistically sound experiments with OpenAirInterface Cloud-RAN prototypes", CLEEN 2016, Grenoble, FR, May 2016
  11. G. Nardini, G. Stea, A. Virdis, D. Sabella, M. Caretti, "Fast and agile lossless mode switching for D2D communications in LTE-Advanced networks", IEEE VTC Spring 2016, Nanjing, PRC, 15-18 May 2016
  12. G. Nardini, G. Stea, A. Virdis, "Performance evaluation of TCP-based traffic over direct communications in LTE-Advanced", IEEE VTC Spring 2016, Nanjing, PRC, 15-18 May 2016
  13. C. Vallati, A. Virdis, E. Mingozzi, G. Stea, "Exploiting LTE D2D Communications in M2M Fog Platforms: Deployment and Practical Issues", IEEE 2nd World Forum on Internet of Things (WF-IoT), Milan, Italy, 2015
  14. A. Virdis, N. Iardella, G. Stea, D. Sabella, "Performance analysis of OpenAirInterface system emulation", PMECT 2015, Rome, Italy, August 26, 2015
  15. A. Virdis, G. Stea, G. Nardini, "SimuLTE: A Modular System-level Simulator for LTE/LTE-A Networks based on OMNeT++", SimulTech 2014, Vienna, AT, August 28-30, 2014 - Slides
  16. G. Nardini, G. Stea, A. Virdis, D. Sabella, M. Caretti, "Effective dynamic coordinated scheduling in LTE-Advanced networks", EUCNC 2014, Bologna, IT, June 23-26, 2014
  17. G. Nardini, G. Stea, A. Virdis, M. Caretti, D. Sabella, "Improving network performance via optimization-based centralized coordination of LTE-A cells", CLEEN 2014, Istanbul, TK, April 6, 2014

Submitted papers (under revision)

  1. A. Virdis,C. Vallati, G. Nardini, G. Tanganelli, G. Stea, E. Mingozzi, "Supporting Fog platforms on large-scale in LTE networks using D2D communications", Submitted to IEEE Vehicular Technology Magazine, major revision submitted

Other Works: Posters, Tutorials, National Conferences (peer reviewed)

  1. N. Iardella, G. Nardini, G. Stea, A. Virdis, F. Mauro, D. Sabella, M. Caretti, G.M. Dell`Aera, "Coordinated scheduling in a Virtual-RAN prototype with OpenAirInterface", EUCNC 2016, Athens, 27-30 June 2016
  2. A. Virdis, "Optimization in the Loop: Implementing and Testing Scheduling Algorithms with SimuLTE", 2nd OMNeT++ Community Summit, IBM Research - Zurich, Switzerland, September 3-4, 2015 - Video
  3. A. Virdis, G. Stea, D. Sabella, M. Caretti, "A practical framework for energy-efficient node activation in heterogeneous LTE networks", 5th InfQ Workshop, Torino, Italy, October 2014
  4. A. Virdis, G. Stea, "System-level analysis of the tradeoffs between power saving and capacity/QoS with DRX in LTE", 4th InfQ Workshop, Sorrento, Italy, June 2013

Patents

  1. M. Caretti, G. Nardini, D. Sabella, G. Stea, A. Virdis, "Radiodiffusione di messaggi per mezzo di trasmissioni da dispositivo a dispositivo", Italian patent application No. 102017000003921, 16/01/2017
  2. M. Caretti, G. Nardini, D. Sabella, G. Stea, A. Virdis, "Method and System for loss mitigation during device to device communication mode switching", PCT Application Number 2016WO-EP060866, filed 13/5/2016
  3. M. Caretti, G. Nardini, D. Sabella, G. Stea, A. Virdis, "Method and System for data tunneling in device to device communications assisted by a telecommunication network", PCT Application Number 2016WO-EP060864, filed 13/5/2016
  4. M. Caretti, D. Sabella, G. Stea, A. Virdis, "METHOD FOR MANAGING DATA TRANSMISSION POWER IN MOBILE CELLULAR NETWORKS", PCT/EP2014/077349, filed 11/12/2014
  5. M. Caretti, G. Nardini, A. Rossali, D. Sabella, G. Stea, A. Virdis, "Resource Allocation System and Method Adapted to Implement Device-to-Device Communications in Wireless Communication Networks", PCT/EP2014/059490, filed 08/05/2014
  6. M. Caretti, D. Sabella, G. Stea, A. Virdis, "Method for Power Consumption Optimization in Mobile Cellular Networks", PCT/EP2014/053954, filed 28/2/2014
  7. M. Caretti, G. Nardini, D. Sabella, G. Stea, A. Virdis, "Metodo per pianificare risorse radio", MI2013A000756, filed 09/05/2013

Technical/Organization Roles

OMNeT++ Community Summit

SIMUL - International Conference on Advances in System Simulation

ICDT - International Conference on Digital Telecommunications

EMERGING - International Conference on Emerging Networks and Systems Intelligence

EMERGING - International Conference on Cloud Computing, GRIDs, and Virtualization

Research Projects

  1. 2016-17: SAPIENT: Satcom and terrestrial architectures improving performance, security and safety in ATM. Funded by the EU under call H2020-SESAR-2015-1
  2. 2015: Study of algorithms and innovative solutions for QoS and energy efficiency management in evolved mobile systems (LTE/LTE-Advanced towards 5G), funded by Telecom Italia Lab (Turin, Italy).
  3. 2015-17: Flex5Gware - Flexible and efficient hardware/software platforms for 5G network elements and devices, Funded by the EU under call H2020-ICT-2014-2.
  4. 2014: Definition of satellite network and related protocols, funded by Thales Alenia Space (Rome, Italy).
  5. 2014: Study of algorithms and innovative solutions for QoS and energy efficiency in evolved mobile systems towards 5G, funded by Telecom Italia Lab (Turin, Italy).
  6. 2013: Study of algorithms and innovative solutions for QoS and energy efficiency in evolved mobile systems (LTE/LTE-A), funded by Telecom Italia Lab (Turin, Italy).
  7. 2012: Study of packet scheduling and resource allocation algorithm for QoS and energy efficiency in evolved mobile systems, funded by Telecom Italia Lab (Turin, Italy).
  8. 2011-12: "Modelli, Algoritmi e Applicazioni di Ottimizzazione Non Lineare Intera Strutturata", prot. 2009XN4ZRR_005, funded by Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR) under the PRIN program.

Teaching

Dottorato in Smart Computing, University of Florence, Pisa and Siena

  1. Year 2016: "Simulation theory and practice".

Laurea Triennale degree in Ingegneria Informatica, University of Pisa

  1. Year 2017: Supporto alla didattica per l'insegnamento di Algoritmi e strutture dati, primo anno.
  2. Years 2014-2016: Supporto alla didattica per l'insegnamento di Fondamenti di Informatica II, modulo di algoritmi e strutture dati, primo anno.
  3. Years 2013: Supporto alla didattica per l'insegnamento di Fondamenti di Informatica II, modulo di basi di dati, primo anno.

Master degree in Computer Engeneering, University of Pisa

  1. Years 2015-2016: Co-docenza per l'insegnamento di Performance evaluation of Computer Systems and Networks, Corso di Laurea Computer Engeneering - LM, primo anno
  2. Year 2014: Supporto alla didattica per l'insegnamento di Performance evaluation of Computer Systems and Networks, Corso di Laurea Computer Engeneering - LM, primo anno
  3. Year 2015: Seminario "Computer Engineers Vs LTE", insegnamento Advanced Network Architectures and Wireless Systems, secondo anno
  4. Year 2013: Seminario "LTE Basics", insegnamento Advanced Network Architectures and Wireless Systems, secondo anno
  5. Year 2013: Seminario "Simulations and OMNeT++", insegnamento Advanced Network Architectures and Wireless Systems, secondo anno
  6. Year 2012: Seminario "Reti Cellulari di quarta generazione: LTE e LTE-Advanced", insegnamento Architetture Avanzate di Networking e Sistemi Wireless, secondo anno
  7. Year 2012: Seminario "Tecniche di simulazione mediante OMNeT++", insegnamento Architetture Avanzate di Networking e Sistemi Wireless, secondo anno
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