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Research Groups | Computer Networks

The Computer Networks group of the Institute of Informatics at UFRGS is recognized both nationally and internationally. It was responsible for the organization of the first edition of the Brazilian Symposium on Computer Networks and Distributed Systems (SBRC), in 1983. The group stands out for forming well-qualified human resources (in Undergraduate, M.Sc. and Ph.D. levels) and, most importantly, for its excellence in research, with a wide array of publications in top tier conferences and journals and a high number of citations. Among its members, four are CNPq research fellows. Moreover, many have been, historically, leading highly relevant research projects and collaborations with Brazilian and international partners (including countries such as the United States, England, Canada, France, Israel, Russia, and others) as well as actively participating in the coordination of several Brazilian scientific conferences (e.g., SBRC 1983, 1989, 2004, 2010 and 2019, and SBSeg 2008), in addition to international ones (e.g., LANOMS 2005, CNSM 2014, and SIGCOMM 2016). Moreover, members of the group participate in the technical program committee of major conferences and compose the editorial board of a wide range of journals in the area.


Research Themes

The main research themes investigated by the Computer Networks Group are listed next.

  • Cyber Security: security guarantees in programmable data planes; network infrastructure survivability; attack detection and mitigation; formal verification of security properties; smart grid security; network resilience.
  • Network/Service Operations and Management: measurement and monitoring; visualization of network information; net neutrality; characterization of large-scale networks; policy-based management.
  • Network Softwarization: network function virtualization (NFV); software-defined networks (SDN); network virtualization; programmable data planes (P4).
  • Wireless Networks and IoT: cognitive radio networks; infrastructured wireless networks; vehicular networks (V2V and V2I); sensor networks; cloud access networks (CRAN); 5G networks; device-to-device communication (D2D).
  • Cloud Computing and Data Center: resource allocation optimization; data center network management predictability; flow management; data center network fragmentation and performance.
  • Information-Centric Networking: ICN mobility; relationships between objects in CCNs; high performance routers in ICN.

Recent Research Projects

The Computer Networks Group has been conducting research projects focused on current, highly relevant themes. Next, we list the main projects carried out within the last five years.

  • FIBRE – Future Internet Brazilian Environment for Experimentation (2013 – current)
    Coordinator: Cristiano Bonato Both e Liane Tarouco
    Funding: MCTIC, RNP
  • BigCloud – Communications and Processing of Big Data in Clouds and Fogs (2017 – 2022)
    Coordinator: Nelson Luis Saldanha da Fonseca
    Participating institutions: Unicamp, UFRGS, UFMG, UFRJ, UFBA, UERJ, University of Waterloo, Université du Luxembourg, University of Trento
    Funding: FAPESP
  • Cloud HPC: Harnessing Cloud Computing to Power Up HPC Applications (2018 – 2021)
    Coordinator: Luciano Gaspary
    Participating institutions: UFRGS, St. Petersburg State University (SPbSU), Beijing Normal University (BNU)
    Funding: CNPq
  • Multilevel Resilience for NFV and SDN based Network Infrastructure (2017 – 2020)
    Coordinator: Alberto Egon Schaeffer Filho
    Participating institutions: UFRGS
    Funding: CNPq
  • P4Sec: Securing Networks in the Programmable Data Plane Era (2017 – 2020)
    Coordinator: Marinho Barcellos and Kirill Levchenko
    Participating institutions: UFRGS, UFPE, UnB, UCSD, UTAM
    Funding: CTIC, RNP, NSF
  • NFV-MENTOR – Network Functions Virtualization ManageMENT & ORchestration  (2017 – 2020) 
    Coordinator: Lisandro Granville
    Participating institutions: UFRGS
    Funding: CNPq
  • FUTEBOL – Federated Union of Telecommunications Research Facilities for an EU-Brazil Open Laboratory (2016 – 2019) 
    Coordinator: Juergen Rochol e Cristiano Bonato Both 
    Participating institutionsTrinity College Dublin, University of Bristol, Instituto de Telecomunicações de Aveiro, VTT, UFRGS, UNICAMP, UFMG, UFC, UFES, Digitel, Intel 
    Funding: MCTIC, CTIC
  • GT-IPÊ analytics: Transforming raw monitoring data into valuable network management information (2017 – 2019) 
    Coordinator: Marinho Barcellos
    Participating institutions: UFRGS, INRIA
    Funding: RNP
  • GT-FENDE: Federated Ecosystem for Offering, Distribution, and Execution of Virtual Network Functionse (2017 – 2018)
    Coordinator: Alberto Egon Schaeffer Filho
    Participating institutions: UFRGS, UFSM, UFPR
    Funding: RNP
  • Unmanned Aerial Vehicle (UAV)-based relay network to support mission critical applications (2014 – 2018)
    Coordinator: Edison Pignaton de Freitas
    Participating institutions: UFRGS
    Funding: FAPERGS
  • Rebuilding User Sessions in Large Scale Systems in the Internet (2015 – 2017)
    Coordinator: Weverton Cordeiro
    Participating institutions: UFRGS
    Funding: CNPq
  • Phoenix – Towards a Survivable SDN Architecture (2014 – 2017)
    Coordinator: Marinho Barcellos 
    Participating institutionsUFRGS 
    Funding: CNPq
  • Microsoft Azure Research Grant (2014 – 2017)
    Coordinator: Marinho Barcellos
    Participating institutions: UFRGS
    Funding: Microsoft
  • ProSeG – Information Security, Protection, and Resilience in Smart Grids (2013 – 2016)
    Coordinator: Lisandro Granville
    Participating institutionsUFRGS, Lancaster University, CEEE, Globosense e CP Eletrônica
    Funding: CNPq
  • MEICAN – Management Environment for Internet-Domain Circuits in Advanced Networks (2010 – 2016)
    Coordinator: Lisandro Granville
    Participating institutions: UFRGS
    Funding: RNP
  • Were You There? Bridging the Gap to Unveil Users’ Online Sessions in Networked, Distributed Systems (2014 – 2015)
    Coordinator: Weverton Cordeiro
    Participating institutions: UFRGS
    Funding: Microsoft
  • Virtual Networks Research Center (2012 – 2015)
    Coordinator: Luciano Gaspary
    Participating institutions: UFRGS, PUCRS
    Funding: FAPERGS
  • Advancements in Models and Tools for Information Technology Management  (2010 – 2015)
    Coordinator: Luciano Gaspary
    Participating institutions: UFRGS, UFPA
    Funding: CAPES
  • SecFuNet – Security for Future Networks (2011 – 2014)
    Coordinator: Marinho Barcellos
    Participating institutions: UPMC, Ether Trust, Telecom ParisTech, École Normale Supérieure (France), TWI (Poland), Implementa, Technische Universität München, Infineon Technologies (Germany), Fundação da Faculdade de Ciências da Universidade de Lisboa (Portugal), UFRGS, UFPE, UFRJ, UECE, UFAM, UFSC (Brazil)
    Funding: Framework Programme 7 (European Union), CNPq

Recent Research Results

Among the main research results published within the last five years, we highlight the following.

  • Scalable QoE-aware Path Selection in SDN-based Mobile Networks (2018)
    RC Filho, W Lautenschläger, N Kagami, M Luizelli, V Roesler, L Gaspary.
    IEEE INFOCOM – IEEE Conference on Computer Communications. [to appear]
  • DLCP: A Protocol for Securing Light Client Operation in Blockchains (2018)
    L Costa, A Silva Neto, B Pinheiro, RS Araujo, WL da Costa Cordeiro, AJG Abelem.
    IEEE/IFIP NOMS 2018 Workshop on Security for Emerging Distributed Network Technologies (DISSECT). [to appear]
  • MEICAN: Simplifying DCN Life-Cycle Management from End-User and Operator Perspectives in Inter-Domain Environments (2018)
    JA Wickboldt, MQ Guerreiro, LZ Granville, LP Gaspary, MF Schwarz, C Guok, V Chaniotakis, A Lake, J Macauley.
    IEEE Communications Magazine, Vol. 56, Issue 1, p. 179-187. [10.1109/MCOM.2017.1601205]
  • Improving Network Resources Allocation in Smart Cities Video Surveillance (2018)
    R Kunst, L Avila, EP De Freitas, S Bampi, J Rochol.
    Computer Networks, v. 134, p. 228-244, ISSN 1389-1286 [10.1016/j.comnet.2018.01.042]
  • Uncovering Bugs in P4 Programs with Assertion-based Verification (2018)
    L Freire, M Neves, L Leal, A Schaeffer-Filho, K Levchenko, MP Barcellos.
    4th Symposium on SDN Research (ACM SOSR), pp 1-7, ISBN: 978-1-4503-5664-0 [10.1145/3185467.3185499]
  • Network-Wide Initiatives to Control Measurement Mechanisms: A Survey (2018)
    JC Nobre, BA Mozzaquatro, LZ Granville.
    IEEE Communications Surveys & Tutorials, ISSN 1553-877X [10.1109/COMST.2018.2797170]
  • A fix-and-optimize approach for efficient and large scale virtual network function placement and chaining (2017)
    MC Luizelli, WLC Cordeiro, LS Buriol, LP Gaspary
    Computer Communications, Vol. 102, p. 67-77. [10.1016/j.comcom.2016.11.002]
  • Design considerations for software-defined wireless networking in heterogeneous cloud radio access networks (2017)
    MA Marotta, M Kist, JA Wickboldt, LZ Granville, J Rochol, CB Both
    Springer Journal of Internet Services and Applications (JISA), Vol. 8, p. 1-18, ISSN 1867-4828. [10.1186/s13174-017-0068-x]
  • Combining Software-Defined and Delay-Tolerant Approaches in Last-Mile Tactical Edge Networking. (2017)
    I Zacarias, L Gaspary, A Kohl, RQA Fernandes, JM Stocchero, EP De Freitas
    IEEE Communications Magazine, v. 55, p. 22-29, ISSN 0163-6804. [10.1109/MCOM.2017.1700239]
  • Employing SDN to control video streaming applications in military mobile networks (2017)
    I Zacarias, J Schwarzrock, LP Gaspary, A Kohl, RQA Fernandes, J Stocchero, EP De Freitas.
    IEEE 16th International Symposium on Network Computing and Applications (NCA), p. 1-4 , ISBN 978-1-5386-1465-5. [10.1109/NCA.2017.8171390]
  • Data Plane Programmability Beyond OpenFlow: Opportunities and Challenges for Network and Service Operations and Management (2017)
    WLC Cordeiro, JA Marques, LP Gaspary.
    Journal of Network and Systems Management, p. 784–818. ISSN 1573-7705. [10.1007/s10922-017-9423-2]
  • Exploiting Parallelism in Hierarchical Content Stores for High-speed ICN Routers (2017)
    RB Mansilha, MP Barcellos, E Leonardi, D Rossi.
    Computer Networks (COMNET), V.125, pp., 132-145. ISSN 1389-1286. [10.1016/j.comnet.2017.04.041]
  • Federating Policy-driven Autonomous Systems: Interaction Specification and Management Patterns (2015)
    A Schaeffer-Filho, E Lupu, M Sloman
    Journal of Network and Systems Management, Vol. 23, Issue 3, ISSN: 1064-7570, pp. 753-793 [10.1007/s10922-014-9317-5]
  • Interactive Monitoring, Visualization, and Configuration of OpenFlow-based SDN (2015)
    PH Isolani, JA Wickboldt, CB Both, J Rochol, LZ Granville.
    Proceedings of the 14th IFIP/IEEE International Symposium on Integrated Network Management (IM), ISBN: 978-3-901882-76-0, p. 207-215. [10.1109/INM.2015.7140294]
  • Software-Defined Networking: Management Requirements and Challenges (2015)
    JA Wickboldt, WP de Jesus, PH Isolani, CB Both, J Rochol, LZ Granville
    IEEE Communications Magazine: Network and service management series, January (2015), pp 278-285, ISSN 0163-6804 [10.1109/mcom.2015.7010546]
  • Resilience Support in Software-Defined Networking: A Survey (2015)
    AS Silva, P Smith, A Mauthe, A Schaeffer-Filho
    Computer Networks, Vol. 92, Part 1, ISSN: 1064-7570, pp. 189–207. [10.1016/j.comnet.2015.09.012]
  • Power Consumption Profiling using Energy Time-Frequency Distributions in Smart Grids (2015)
    A Marnerides, P Smith, A Schaeffer-Filho, A Mauthe
    IEEE Communications Letters, Vol. 19, Issue 1, ISSN: 1089-7798, pp. 46-49. [10.1109/LCOMM.2014.2371035]
  • Edge-centric Computing: vision and challenges (2015)
    PG Lopez, A Montresor, D Epema, A Datta, T Higashino, A Iamnitchi, MP Barcellos, P Felber, E Riviere.
    ACM Computer Communication Review (ACM CCR), v. 45, n. 5, pp. 37-42. [10.1145/2831347.2831354]
  • A Survey on Information Visualization for Network and Service Management (2015)
    VT Guimarães, CMDS Freitas, R Sadre, LMR Tarouco, LZ Granville
    IEEE Communications Surveys and Tutorials, pp 285-323, ISSN: 1553-877X [10.1109/comst.2015.2450538]
  • Hierarchical Content Stores in High-speed ICN Routers: Emulation and Prototype Implementation (2015)
    RB Mansilha, L Saino, MP Barcellos, M Gallo, E Leonardi, D Perino, D Rossi
    2nd ACM Conference on Information-Centric Networking, Pages 59-68, San Francisco [10.1145/2810156.2810159]
  • Data Center Network Virtualization: A Survey (2013)
    MF Bari, R Boutaba, R Esteves, LZ Granville, M Podlesny, MG Rabbani, Q Zhang, MF Zhani
    IEEE Communications Surveys and Tutorials. V. 15, Issue 2, Second Quarter 2013, pp 909-928, ISSN: 1553-877X [10.1109/surv.2012.090512.00043]