Victor Lopez

Company:
Telefónica I+D, S.A.U.
Title:
Technology Specialist
Group:
Scalable Multilayer Photonics Networks
Address:
c/ Don Ramón de la Cruz 84, 28006, Madrid
E-Mail:
vlopez@tid.es
Mobile/Landline:
+34913128872
Victor Lopez

Víctor López received the M.Sc. (Hons.) degree in telecommunications engineering from Universidad de Alcalá de Henares, Spain, in 2005 and the Ph.D. (Hons.) degree in computer science and telecommunications engineering from Universidad Autónoma de Madrid (UAM), Madrid, Spain, in 2009. The results of his Ph.D. thesis were awarded with the national COIT prize 2009 of the Telefónica foundation in networks and telecommunications systems. In 2004, he joined Telefónica I+D as a Researcher, where he was involved in next generation networks for metro, core, and access. He was involved with several European Union projects (NOBEL, MUSE, MUPBED). In 2006, he joined the High-Performance Computing and Networking Research Group (UAM) as a Researcher in the ePhoton/One+ Network of Excellence. He worked as an Assistant Professor at UAM, where he was involved in optical metro-core projects (BONE, MAINS). In 2011, we joined Telefonica I+D as Technology specialist. His research interests include the integration of Internet services over optical networks, mainly sub-wavelength solutions and multilayer architectures.

Journals

  • B. Rahimzadeh Rofoee, G. Zervas, Y. Yan, D. Simeonidou, G. Bernini, G. Carrozzo, N. Ciulli, J. Levins, M. Basham, M. Dunne, M. Georgiades, A. Belovidov, L. Andreou, D. Sanchez, J. Aracil, V. López, and J. P. Fernández-Palacios: Demonstration of low latency Intra/Inter Data-Centre heterogeneous optical Sub-wavelength network using extended GMPLS-PCE control-plane, in Optics Express, March 2013, Vol. 21, Issue 5, pp. 5463-5474. [DOI]
  • F. Rambach, B. Konrad, L. Dembeck, U. Gebhard, M. Gunkel, M. Quagliotti, L. Serra and V. López: A Multi-Layer Cost Model for Metro/Core Networks, in IEEE/OSA Journal of Optical Communications and Networking, March 2013, Vol. 5, Issue 3, pp. 210-225. [DOI]
  • M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. López, and J. Comellas: Elastic Spectrum Allocation for Time-Varying Traffic in FlexGrid Optical Networks, in IEEE Journal on Selected Areas in Communications, January 2013, Vol. 30, No. 1, pp. 6 - 38. [DOI]
  • L. M. Contreras, V. López, O. González de Dios, A. Tovar, F. Muñoz, A. Azañón, J.P. Fernández-Palacios, J. Folgueira: Towards Cloud-Ready Transport Networks, in IEEE Communications Magazine, September 2012, Vol. 50, Issue. 9, Pages. 48 - 55. [DOI]
  • P. Szegedi, J. Ferrer Riera, J.A. García-Espín, M. Hidell, P. Sjödin, P. Söderman, M. Ruffini, D. O'Mahony, A. Bianco, L. Giraudo, M. Ponce de Leon, G. Power, C. Cervelló-Pastor, V. López and S. Naegele-Jackson: Enabling Future Internet Research: The FEDERICA Case, in IEEE Communications Magazine, July 2011, Vol. 49, Issue. 7, Pages. 54 - 61. [DOI]
  • A. Leiva, J.M. Finochietto, B. Huiszoon, V. López, M. Tarifeno, J. Aracil, and A. Beghelli, Comparison in power consumption of static and dynamic WDM networks, Elsevier Journal on Optical Switching and Networking, special issue on Green Communications and Networking, July 2011, Vol. 8, Issue 3, Pages. 149-161. [DOI]

Conference papers

  • O. Gonzalez de Dios, V. López, C. Haya, C. Liou, P. Pan, G. Grammel, J. Antich, J.P. Fernández-Palacios: Traffic Engineering Database dissemination for Multi-layer SDN orchestration, in European Conference on Optical Communication (ECOC), Mo.4.E.2, Sep 2013.
  • M. Cuaresma, F. Muñoz, S. Martinez, A. Mayoral, O. Gonzalez de Dios, V. López, J.P. Fernández-Palacios: Experimental Demonstration of H-PCE with BGP-LS in elastic optical networks, in European Conference on Optical Communication (ECOC), We.4.E.3, Sep 2013.
  • A. Eira, J. Pedro, J. Pires, D. Fonseca, J.P. Fernández-Palacios, V. López and S. Spaelter: Defragmentation-Based Capacity Enhancement for Fixed to Flexible-Grid Migration Scenarios in DWDM Networks , in European Conference on Optical Communication (ECOC), Th.1.E.3, Sep 2013.
  • V. López, O. Gonzalez de Dios, O. Gerstel, N. Amaya, G. Zervas, D. Simeonidou and J.P. Fernández-Palacios: Target cost for Sliceable Bandwidth Variable Transponders in a Real Core Network, in Future Network & Mobile Summit, Jul 2013.
  • R. Muñoz, V. López, R. Casellas, O. Gonzalez de Dios, F. Cugini, N. Sambo, A. D'Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez and R. Morro: IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks, in Future Network & Mobile Summit, Jul 2013.
  • A. Mayoral, O. Gonzalez de Dios, V. López and J.P. Fernández-Palacios: Migration Steps Towards Flexi-grid networks, in Future Network & Mobile Summit, Jul 2013.
  • M. Drogon, M. Chamania, A. Jukan, M. Yanuzzi, X. Masip-Bruin, V. López, O. González de Dios , M. Maciejewski, M. Roth, C. Brunn and J. Altmann: Towards Automated Interactions between the Internet and the Carrier-Grade Management Ecosystems, in Future Network & Mobile Summit, Jul 2013.
  • F. Muñoz, R. Muñoz, J. Rodríguez, V. López, O. González de Dios and J.P. Fernández-Palacios, "End-to-end service provisioning across MPLS and IP/WDM domains", in the International Workshop on Network Management Innovations co-located with the 4th IEEE Technical CoSponsored International Conference on Smart Communications in Network Technologies, Jun 2013.
  • D.King, V. López, O. Gonzalez de Dios, J.P. Fernandez-Palacios and Q. Zhao: Using the Path Computation Element to Enhance SDN for Elastic Optical Networks (EON), in International Conference on IP + Optical Network (iPOP), May 2013.
  • A. Asensio, M. Klinkowski, M. Ruiz, V. López, A. Castro, L. Velasco and J. Comellas: Impact of Aggregation Level on the Performance of Dynamic Lightpath Adaptation under Time-Varying Traffic, in Optical Networking Design and Modeling (ONDM), Apr 2013.
  • S. Martinez, V. López, M. Chamania, Ó. González de Dios, A. Jukan and J. P. Fernández-Palacios: Assessing the Performance of Multi-Layer Path Computation Algorithms for different PCE Architectures, in Proc. Optical Fiber Conference (OFC), Mar 2013. /li>
  • R. Duque, V. López, A. González, Ó. González de Dios and J. P. Fernández-Palacios: Cost evaluation of the integration of IP/MPLS and WDM elements, in Proc. Optical Fiber Conference (OFC), Mar 2013.

Actually, I am involved in backbone and metro projects.

Post-doctoral research (2009-2011)

I started working as an Assistant Professor at the Universidad Autonoma de Madrid in September 2009. I collaborated in HPCN projects:
  • MAINS: (Metro Architectures Enabling Sub-Wavelengths) MAINS proposes two sub-wavelength solutions for metropolitan networks. MAINS will demonstrate the interoperation of both solutions using a common control plane. A second outcome will be the efficient deployment of distributed application servers, by means of a novel service to network interface and an extended GMPLS control plane. I collaborated in the service to network interface definition and the protocol to transfer efficiently the information in the metro network.
  • DEPACO project is a collaboration with Optenet. We developed a platform in FPGA to support 10Gbps packet firewall processing.
  • PASITO: (Plataforma de Análisis de ServIcios de TelecOmunicaciones) PASITO is a Spanish project to deploy a Telecommunication Service Analysis Platform (Plataforma de Análisis de ServIcios de TelecOmunicaciones) whose aim is to develop a distributed network testbed that offers the possibility of creating, debugging and evaluating several telecommunication service test scenarios. I worked on a Multi-layer experiment using PASITO facilities combined with OneLab and Federica resources.
  • ANFORA (Análisis FORense, longitudinAl y ciego de tráfico de Internet). ANFORA is focused on traffic analysis from network measurements. Based on the network status, the operator could reconfigure current links. In this project, we developed a Path Computation Element prototype that supports multi-domain algorithms.

From February to August 2010, I was a visiting researcher at University of Essex in the High Performance Networks Group. During this period I worked on the development of an edge node for file-exchange in OBS networks in FPGA.

Graduate research (2005-2009)

I defended my doctoral thesis on April 17th, 2009. I carried out my research at the Universidad Autonoma de Madrid, Spain and I did an internship for three months at Telecom ParisTech. During this period, I was involved in the following projects:

  • BONE Building the Future Optical Network in Europe. In this project, UAM lead the Topical Project "Edge-to-core adaptation for hybrid networks". My task was to study multi-layer algorithms for IP over WDM networks to more complex scenarios. Moreover, we have worked on the extension of Flow-Aware Networking to IP over WDM scenarios.
  • e-Photon/ONe + Optical networks: Towards bandwidth manageability and cost-efficiency. UAM is the leader of the Joint Project-B: Optical Burst Switching. I started the definition of multi-layer algorithms for IP over WDM networks. Moreover, we carried out research on Optical Burst Switched networks. Another output of this project was the book Enabling Optical Internet with Advanced Network Technologies, where I was chapter editor of the OBS chapter.
  • DIOR This project aims at the evaluation of the foreseen traffic evolution within the Spanish academic network RedIRIS, by means of extensive traffic analysis. We studied the feasibility of OBS architectures in RedIRIS networks.

Research period (2003 - 2005)

I started my research career at Telefonica I+D. During this period, I worked in the following projects:

  • NOBEL: (Next generation Optical Networks for Broadband Europe Leadership) I collaborated in the requirement, definition and validation specifications for a GMPLS test bed developed in the project. We studied the impact of the new technologies in the Information Society. Furthermore, I developed a ns-2 based OBS simulator to analyze the performance of MRDV (Multipath Rounting with Dynamic Variance) protocol over OBS networks.
  • MUPBED: (Multi-Partner Europeans Testbeds for Research Networking) We define the reference architecture for research networks based on ASON/ GMPLS. We analyzed and defined multilayer integrated models for QoS provisioning.
  • ePhoton/One: I was involved in the analysis of the TCP over OBS (Optical Burst Switching) performance. As a result, an article was accepted in the Telecom I+D 2005. Besides we studied the alternatives for the deployment of FTTx. We submitted a paper called "Overview of the optical broadband access evolution - A joint paper of operators of the IST network of excellence e-Photon/ONe" to the journal "IEEE Communications Magazine" and "IEEE International Conference on Access Technologies".
  • FIRM: (Field trial with Integrated ROADMs and GMPLS compliance) We defined (from the network operator point of view) the requirements and specifications of the ROADM (Reconfigurable Optical Add-Drop Multiplexer) and I analyzed the techno-economic and validation aspects of the ROADM equipment.
  • MUSE: (Multi Service Access Everywhere) We worked in the QoS analysis and definition fot the future services provisioning. We studied the different migration alternatives from the current ADSL service to the new ones.

Master Thesis - Spacewire core

I presented the results of my master thesis (M.Sc.) on the 10th of October 2005. Its title was "Development and implementation of the Spacewire protocol in FPGA". The main objective of the project was to develop and implement a Spacewire coder-decoder in a FPGA. I analyzed in detail the ESA Spacewire standard (ECSS-E-50-12 A) to know all the standard requirements. The Spacewire core was programmed in VHDL, using mainly the Xilinx tools.

Two tools were developed during the core development to evaluate the model and to create the necessary test beds for the core validation.

Once the design was developed, the validation testbed created by the Dundee University, in collaboration with the ESA, was followed to validate the Spacewire core. The design was implemented in a Spartan XC2S200E checking its correct operation.

As a result of my master thesis we published an article in the International Spacewire Conference (2007).

My expertise is in the area of Telematics and Communication Networks with a focus on:

  • Optical networks, OBS (Optical Burst Switching) and OCS (Optical Circuit Switching) networks.
  • Multilayer and multidomain architectures.
  • Applications based on FPGAs for high-speed networks.
  • Control plane and management of optical networks (GMPLS, ASON, PCE).
  • Access networks (xDSL, HFC, FTTx).
  • Networking traffic characterization and dimensioning analysis.

Journal Publications


  1. O. Gonzalez de Dios, V. López, M. Cuaresma, F. Muñoz, M. Chamania and A. Jukan: Coordinated Computation and Setup of Multi-layer Paths via Inter-layer PCE Communication: Standards, Interoperability and Deployment, accepted for its publication in IEEE Communications Magazine.
  2. J. Domzal, R. Wójcik, A. Jajszczyk, V. López and J. Aracil: EFMP — A New Congestion Control Mechanism for Flow-Aware Networks, accepted for its publication in Transactions on Emerging Telecommunications Technologies.
  3. B. Rahimzadeh Rofoee, G. Zervas, Y. Yan, D. Simeonidou, G. Bernini, G. Carrozzo, N. Ciulli, J. Levins, M. Basham, M. Dunne, M. Georgiades, A. Belovidov, L. Andreou, D. Sanchez, J. Aracil, V. López, and J. P. Fernández-Palacios: Demonstration of low latency Intra/Inter Data-Centre heterogeneous optical Sub-wavelength network using extended GMPLS-PCE control-plane, in Optics Express, March 2013, Vol. 21, Issue 5, pp. 5463-5474. [DOI]
  4. F. Rambach, B. Konrad, L. Dembeck, U. Gebhard, M. Gunkel, M. Quagliotti, L. Serra and V. López: A Multi-Layer Cost Model for Metro/Core Networks, in IEEE/OSA Journal of Optical Communications and Networking, March 2013, Vol. 5, Issue 3, pp. 210-225. [DOI]
  5. M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. López, and J. Comellas: Elastic Spectrum Allocation for Time-Varying Traffic in FlexGrid Optical Networks, in IEEE Journal on Selected Areas in Communications, January 2013, Vol. 30, No. 1, pp. 6 - 38. [DOI]
  6. L. M. Contreras, V. López, O. González de Dios, A. Tovar, F. Muñoz, A. Azañón, J.P. Fernández-Palacios, J. Folgueira: Towards Cloud-Ready Transport Networks, in IEEE Communications Magazine, September 2012, Vol. 50, Issue. 9, Pages. 48 - 55. [DOI]
  7. P. Szegedi, J. Ferrer Riera, J.A. García-Espín, M. Hidell, P. Sjödin, P. Söderman, M. Ruffini, D. O'Mahony, A. Bianco, L. Giraudo, M. Ponce de Leon, G. Power, C. Cervelló-Pastor, V. López and S. Naegele-Jackson: Enabling Future Internet Research: The FEDERICA Case, in IEEE Communications Magazine, July 2011, Vol. 49, Issue. 7, Pages. 54 - 61. [DOI]
  8. A. Leiva, J.M. Finochietto, B. Huiszoon, V. López, M. Tarifeno, J. Aracil, and A. Beghelli, Comparison in power consumption of static and dynamic WDM networks, Elsevier Journal on Optical Switching and Networking, special issue on Green Communications and Networking, July 2011, Vol. 8, Issue 3, Pages. 149-161. [DOI]
  9. P. Reviriego, B. Huiszoon, V. López, R. Coenen, J. A. Hernández, J. A. Maestro: Improving energy efficiency in IEEE 802.3ba high-rate Ethernet optical links, IEEE Journal of Selected Topics in Quantum Electronics, special issue on Green Photonics, March/April 2011, Vol. 17, Issue. 2, Pages. 419 - 427. [DOI]
  10. V. López, J. A. Hernández, Ó. González de Dios, J. P. Fernández-Palacios, J. Aracil: Multi-layer traffic engineering of IP over WDM networks based on Bayesian decision theory, IEEE/OSA Journal of Optical Communications and Networking, August 2010, Vol. 2, Issue 8, Pages 515-529. [DOI]
  11. F. Callegati, F. Cugini, P. Ghobril, S. Gunreben, V. López, B. Martini, P. Marino, M. Perenyi, N. Sengezer, D. Staessens, J. Szigeti and M. Tornatore: Optical Core Networks Research in the e-Photon-ONe+ project, in IEEE/OSA Journal of Lightwave Technology, October 2009, Vol. 27, No. 20, Pages 4415-4423. [DOI]
  12. J.A. Hernández, P. Reviriego, J.L. García-Dorado, V. López, D. Larrabeiti, and J. Aracil: Performance evaluation and design of Polymorphous OBS networks with guaranteed TDM services., in IEEE/OSA Journal of Lightwave Technology, July 2009, Vol. 27, No. 13, Pages 2495-2505. [DOI]
  13. J.E. Gabeiras, V. López, J. Aracil, J.P. Fernández Palacios, C. García Argos, Ó. González de Dios, F.J. Jiménez Chico and J.A. Hernández: Is Multi-layer Networking Feasible?, in Elsevier Journal on Optical Switching and Networking, April 2009, Vol. 6, Issue 2, Pages 129-140. [DOI]
  14. J.A. Hernández, J. Aracil, V. López, J. L. García-Dorado and L. De Pedro: Performance analysis of asynchronous best-effort traffic coexisting with TDM reservations in polymorphous OBS networks in Phot. Network Communications, April 2009, Vol. 17, No. 2, Pages 93-103. [DOI]
  15. C. Cárdenas, M. Gagnaire, V. López and J. Aracil: Admission control in Flow-Aware Networking (FAN) architectures under GridFTP traffic, in Elsevier Journal on Optical Switching and Networking, January 2009, Vol. 6, Issue 1, Pages. 20-28. [DOI]
  16. V. López, J.A. Hernández, J. Aracil, J.P. Fernández Palacios and O. González de Dios: A Bayesian decision theory approach for the techno-economic analysis of an all-optical router (extended version), in Computer Networks, July 2008, Vol. 52, Issue 10, Pages. 1916-1926. [DOI]
  17. J.A. Hernández, J. Aracil, V. López and J.E. López de Vergara: On the analysis of burst-assembly delay in OBS networks and applications in delay-based service differetiation in Phot. Network Communications, August 2007, Vol. 14, No. 1, Pages. 49-62. [DOI]
  18. P. Chanclou, J. Fernández Palacios, S. Gosselin, V. López Álvarez, E. Zouganeli: Overview of the Optical Broadband Access Evolution - A joint paper of operators in the IST network of excellence e-Photon/ONe. in IEEE Communications Magazine, August 2006, Vol. 44, Issue. 8, Pages. 29-35. [DOI]

Book Chapters


  • L. M. Contreras, V. López, O. González de Dios, F. Jiménez, J. Rodríguez, J.P. Fernández-Palacios: Migration Path Towards Cloud-Aware Core Networks, in Communication Infrastructures for Cloud Computing: Design and Applications, to be published by IGI Global.
  • J. López, Y. Ye, V. López, F. Jimenez, R. Duque, I. Tafur Monroy, and P. M. Krummrich: Chapter: Energy Efficiency Improvement with the Innovative Flexible-grid Optical Transport Network, in Green Networking and Communications: ICT for Sustainability, to be published by CRC Press, USA.
  • Editors: J. A. Hernández and V. López, Chapter 3: Optical Burst Switching in "Enabling optical Internet with advanced network technologies", Springer Series in Computer Communications and Networks, eds: J. Aracil and F. Callegatti, June 2009. [online version]
  • C. Cardenas, M. Gagnaire and V. López, Chapter 15: Flow-Based Networking Architectures under Mixed Internet and Grid Traffic in "Computational and Data Grids: Principles, Applications and Design", IGI Global, ed: Nikolaos Preve, September 2011. [online version]

Conference and Workshop Papers


  1. J. López, Y. Ye, V. López, F. Jimenez, R. Duque, P. M. Krummrich, F. Musumeci, M. Tornatore, A. Pattavina: Traffic and Power-Aware Protection Scheme in Elastic Optical Networks in the International Telecommunications Network Strategy and Planning Symposium (NETWORKS), Oct 2012.
  2. J. Lopez Vizcaino, Y. Ye, V. López, F. Jiménez, R. Duque, P. Krummrich: On the Energy Efficiency of Survivable Optical Transport Networks with Flexible-grid in European Conference on Optical Communication (ECOC 2012), Sep 2012.
  3. C.T. Politi, V. Anagnostopoulos, A. Stavdas, R. Duque, V. López and J.P. Fernández-Palacios: Routing in medium term optical networks in ICT STRONGEST, in Future Network & Mobile Summit, Jul 2012.
  4. C.T. Politi, V. Anagnostopoulos, A. Stavdas, R. Duque, V. López and J.P. Fernández-Palacios: Routing in medium term optical networks in ICT STRONGEST, in Future Network & Mobile Summit, Jul 2012.
  5. V. López, G. Zervas, Y. Qin, S. Lopez-Buedo, D. Simeonidou, J. Aracil and J.P. Fernandez-Palacios: Implementation of an OBS access node supporting multiple services in International Conference on Transparent Optical Networks (ICTON), Jul 2012.
  6. Cs. Kiss Kalló, V. López, J. Dunne, M. Basham, J. P. Fernández-Palacios: Techno-economic analysis of IP off-loading architectures over multigranular photonic switching technologies, in Future Network & Mobile Summit, Jul 2012.
  7. A. M. Hassan, J. Altmann and V. López: Control Plane Framework Emergence and its Deployment Cost Estimation, in Conference of Telecommunication, Media and Internet Techno-Economics (CTTE), Jun 2012.
  8. F. Muñoz, V. López, Ó. González de Dios and J. P. Fernández-Palacios: Multi-layer Restoration in Hierarchical IP/MPLS over WSON Networks, in Networks and Optical Communications (NOC), Jun 2012.
  9. M. Chamania, O. Gonzalez de Dios, V. López, M. Cuaresma, A. Jukan, M. Drogon, X. Masip-Bruin, Marcelo Yannuzzi, "Coordinated Computation of Multi-layer Paths via Inter-layer PCE Communication: Standards, Interoperability and Deployment", Workshop on Telecommunications: From Research to Standards, IEEE International Conference on Communication (ICC), Jun 2012.
  10. O. Gonzalez de Dios, M. Cuaresma, S. Martinez, F. Munoz, V. López, J.P. Fernandez-Palacios: Functional validation of the cooperation between Virtual Network Topology Manager (VNTM) and Path Computation Element (PCE), in International Conference on IP + Optical Network (iPOP), Jun 2012.
  11. Cs. Kiss Kalló, J. Dunne, R. Carley, C. O'Malley, V. López, J. P. Fernández-Palacios: Economic Modelling of Uncertain Next-Generation Network Evolution, in Optical Networking Design and Modeling (ONDM), Apr 2012.
  12. Cs. Kiss Kalló, J. Shields, C. O'Malley, R. Carley, V. López, J. P. Fernández-Palacios: Cost-Effective Sub-wavelength Solution for Data Centre Location in Scaled Next-Generation Networks, in Optical Networking Design and Modeling (ONDM), Apr 2012.
  13. L. Velasco, M. Klinkowski, M. Ruiz, V. López and Gabriel Junyent: Elastic Spectrum Allocation for Variable Traffic in Flexible-Grid Optical Networks, in Proc. Optical Fiber Conference (OFC), March 2012.
  14. C.T. Politi, V. Anagnostopoulos, C. Matrakidis, A. Stavdas, A. Lord, V. López and J.P. Fernández-Palacios: Dynamic Operation of Flexi-Grid OFDM-based Networks, in Proc. Optical Fiber Conference (OFC), March 2012.
  15. V. López, J.L. Añamuro, C. García, V. Moreno, M. Izal, J.E. López de Vergara, J.P. Fernández-Palacios and J. Aracil: Implementation of Multi-layer techniques using FEDERICA, PASITO and OneLab network infrastructures to appear in the proceedings of the 17th IEEE International Conference on Networks (ICON), Dec, 2011.
  16. D. Álvarez, V. López, J.L. Añamuro, J.E. López de Vergara, O. González de Dios and J. Aracil: Utilization of Temporary Reservation of Path Computed Resources for Multi-Domain PCE Protocols in WDM Networks in the proceedings of Network of the Future conference, Nov, 2011.
  17. J. Fullaondo, V. López, J.P. Fernández Palacios and J. Aracil, Optical Friendly HiSpeed File Transfer Protocol For Enabling Next Generation Nomadic Virtual PC Services, in the proceedings of the 37nd European Conference on Optical Communication (ECOC 2011), Sep, 2011
  18. J.L. Añamuro, V. López and J. Aracil, Implementación y evaluación del Path Computation Element Protocol, in Jornadas de Ingeniería Telemática (JITEL), Sep, 2011.
  19. J. Fernandez-Palacios, N. Gutierrez, G. Carrozzo G. Bernini, J. Aracil, V. López, G. Zervas, R. Nejabati, D. Simeonidou, M. Basham, and D. Christofi, Metro Architectures enabliNg Subwavelengths: Rationale and Technical challenges, in Future Network & Mobile Summit, Jun, 2010.
  20. A. Leiva, J. M. Finochietto, V. López, B. Huiszoon and A. Beghelli: Comparison of Static and Dynamic WDM Networks in Terms of Energy Consumption, in Proc. Optical Fiber Conference (OFC), March 2010.
  21. V. López, B. Huiszoon, O. González de Dios, J.P. Fernández Palacios and J. Aracil: Path Computation Element in Telecom Networks: Recent Developments and Standardization Activities, in Optical Networking Design and Modeling (ONDM), Feb 2010.
  22. J. Domzal, R. Wójcik, K. Wajda, A. Jajszczyk, V. López, J.A. Hernández, J. Aracil, C. Cárdenas and M. Gagnaire: A Multi-layer Recovery Strategy in FAN over WDM Architectures in Design of Reliable Communication Networks (DRCN), October 2009.
  23. V. López, O. González de Dios, J.A. Hernández, R. Duque, C. Garcia Argos, J. Jiménez, J.P. Fernández Palacios and J. Aracil: Performance evaluation of threshold-based multi-layer traffic engineering strategies, in Networks and Optical Communications (NOC), Jun 2009.
  24. P.M. Santiago del Río, J.A. Hernández, V. López, J. Aracil and B. Huiszoon: On the feasibility of transmission scheduling in a code-based transparent passive optical network architecture, in Networks and Optical Communications (NOC), Jun 2009.
  25. V. López, J.A. Hernández, J. Aracil, J.P. Fernández Palacios and O. González de Dios: Performance evaluation of a Bayesian decisor in a multi-hop IP over WDM network scenario, in Optical Networking Design and Modeling (ONDM), Feb 2009.
  26. J. L. García-Dorado, J. E. López de Vergara, J. Aracil, V. López, J. A. Hernández, S. López-Buedo, L. de Pedro: Utilidad de los flujos netFlow de RedIRIS para análisis de una red académica, Publicación de la red nacional de I+D, No. 82-83, RedIRIS ISSN 1139-207X, April 2008.
  27. C. Cárdenas, M. Gagnaire, V. López and J. Aracil: Performance Evaluation of the Flow-Aware Networking (FAN) architecture, in IEEE-IFIP Network Operations and Management Symposium (NOMS 2008), April 2008.
  28. V. López, C. Cárdenas, J. A. Hernández, J. Aracil and M. Gagnaire: Extension of the Flow-Aware Networking (FAN) architecture to the IP over WDM environment, in IEEE International Telecommunication NEtworking WorkShop on QoS in Multiservice IP Networks (IT-NEWS/QoS-IP 2008), February 2008. Within the top ten papers award.
  29. V. López, J. L. García-Dorado, J. A. Hernández, J. Aracil: Performance comparison of scheduling algorithms for IPTV traffic over Polymorphous OBS routers , in International Conference on Transparent Optical Networks (ICTON) - Mediterranean Winter, December 2007.
  30. C. Cárdenas, M. Gagnaire, V. López, and J. Aracil: Admission control for Grid services in IP networks, in Advanced Networks and Telecommunication Systems (ANTS), December 2007.
  31. P. Aguilar-Jiménez, V. López, S. Sánchez, M. Prieto, D. Meziat: Design and Implementation of Synthesizable SpaceWire Cores, in International SpaceWire Conference, September 2007.
  32. V. López, J.A. Hernández, J. Aracil, J. P. Fernández Palacios O. González de Dios: A Bayesian decision theory approach for the techno-economic analysis of an all-optical router, in Optical Networking Design and Modeling (ONDM), May 2007. Published in Lecture Notes in Computer Science (LNCS). Within the top five papers award.
  33. P. Chanclou, J. Fernández Palacios, S. Gosselin, V. López Álvarez, E. Zouganeli: Overview of the Optical Broadband Access Evolution - A joint paper of operators in the IST network of excellence e-Photon/ONe. in The 2nd Institution of Engineering and Technology International Conference on Access Technologies, June 2006.
  34. O. González de Dios, I. de Miguel, V. López: Performance evaluation of TCP over OBS considering background traffic, in ONDM, May 2006.
  35. O. González de Dios, I. de Miguel, V. López, R. Durán, N. Merayo, J. F. Lobo: Estudio y simulación de TCP en redes de conmutación óptica de ráfagas (OBS), in Telecom I+D, November 2005.
  • Invited conference papers

    1. V. López, G. Zervas, Y. Qin, S. Lopez-Buedo, D. Simeonidou, J. Aracil and J.P. Fernandez-Palacios: Implementation of an OBS access node supporting multiple services in International Conference on Transparent Optical Networks (ICTON), Jun 2012.
    2. L. Contreras, V. López, O. Gonzalez, J.P. Fernandez-Palacios: Towards Cloud-Ready Transport Networks, in International Conference on Optical Internet (COIN), May 2012.
    3. M. Yannuzzi, A. Jukan, X. Masip-Bruin, M. Chamania, R. Serral-Gracia, V. López, O. Gonzalez de Dios, A. Azañon, M. Maciejewski, C. Brunn, M. Roth and J. Altmann, The Internet and Transport Network Management Ecosystems: A Roadmap Toward Convergence, in Optical Networking Design and Modeling (ONDM), Apr 2012.
    4. J. Domzal, R. Wójcik, A. Jajszczyk, V. López, J.A. Hernández and J. Aracil: Admission control policies in multi-layer flow-aware networks in International Conference on Transparent Optical Networks (ICTON), June 2009.
    5. J.A. Hernández, J. Aracil, V. López, J. Fernández Palacios, Ó. González de Dios: A resilience-based comparative study between Optical Burst Switching and Optical Circuit Switching technologies, in IEEE ICTON, Jun 2006.
  • Press releases from our activities:

    My Ph.D. Thesis End-to-end quality of service provisioning in multilayer and multidomain environments [PDF] was awarded as the the Best PhD Thesis on Networks and Telecommunication Systems for the COIT - Fundacion Telefonica.

    © 2014 Telefonica Research and Innovation