Now showing items 21-40 of 66

  • Defining a network management architecture 

    Jiménez Agudelo, Yury Andrea; Cervelló Pastor, Cristina; García García, Aurelio Javier (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    This work proposes an algorithm called k-Critical Node to solve the controller placement problem in Software Defined Networks. K-Critical finds the minimum number of controllers to satisfy a target communication delay ...
  • Delay analysis of slotted OBS networks under DAOBS MAC protocol 

    Triay Marquès, Joan; Cervelló Pastor, Cristina (2011-06-30)
    Article
    Restricted access - publisher's policy
    Medium access control (MAC) protocols can improve the burst/packet delivery rate in optical burst-switched (OBS) networks. In this letter, the delay analysis of slotted OBS under the use of the DAOBS MAC protocol is proposed. ...
  • Deliverable DJRA1.2. Solutions and protocols proposal for the network control, management and monitoring in a virtualized network context 

    Cervelló Pastor, Cristina; Machado, Roberto; Monje Hernández, Álvaro; Óskarsson, Ásgeir (2009-10-30)
    External research report
    Open Access
    This deliverable goes further on the research aspects within FEDERICA. First of all the architecture of the control plane for the FEDERICA infrastructure will be defined. Several possibilities could be implemented, using ...
  • Deliverable DJRA1.3: Tool prototype for creating and stitching multiple network resources for virtual infrastructures 

    Cervelló Pastor, Cristina; Monje Hernández, Álvaro; Óskarsson, Ásgeir (2010-12-23)
    External research report
    Open Access
    This document reports the final results of JRA1.2 Activity in the development of a tool prototype for creating sets ofvirtual resourcesinFEDERICA.The prototype goal is to simplify and automate part of the work for NOC.The ...
  • Deliverable JRA1.1: Evaluation of current network control and management planes for multi-domain network infrastructure 

    Cervelló Pastor, Cristina; Machado, Roberto (2008-07-31)
    External research report
    Open Access
    The scope of this deliverable is mainly focused on the virtualisation of the resources within a network and at processing nodes. The virtualization of the FEDERICA infrastructure allows the provisioning of its available ...
  • Demonstration of C/S based hardware accelerated QoT estimation tool in dynamic impairment-aware optical network 

    Simeonidou, Dimitra; Nejabati, Reza; Qin, Yixuan; Cheng, Kevin C.S.; Triay Marquès, Joan; Escalona, Eduard; Zervas, Georgios S.; Zarris, George; Amaya González, Norberto; Cervelló Pastor, Cristina (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    An enhanced version of hardware accelerated QoT estimation tool in impairment-aware optical network is demonstrated and evaluated against the different number of lightpaths and wavelengths per link. It outperforms the ...
  • Designing Messenger Visual, an instant messaging service for individuals with cognitive disability 

    Tuset, Pere; López, Juan Miguel; Barberán, Pere; Janer, Léonard; Cervelló Pastor, Cristina (Springer, 2011)
    Conference report
    Open Access
    Considering the importance of Internet-based communications in our society, the lack of Instant Messaging (IM) services adapted to individuals with cognitive disabilities who have difficulties using written language ...
  • Discovering the network topology: an efficient approach for SDN 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (2016-11)
    Article
    Open Access
    Network topology is a physical description of the overall resources in the network. Collecting this information using efficient mechanisms becomes a critical task for important network functions such as routing, network ...
  • Diseño SDN/NFV con retardo balanceado entre orquestador, controladores y elementos de red 

    García García, Aurelio; Cervelló Pastor, Cristina; Jiménez Agudelo, Yury Andrea (2015)
    Conference lecture
    Restricted access - publisher's policy
    El eje central de esta investigación se concreta en el desarrollo de una metodología específica que consigue seleccionar la ubicación óptima de los nodos de control en las redes SDN y NFV. El objetivo es solventar las ...
  • Distributed Contention Avoidance in Optical Burst-Switched Ring Networks 

    Triay Marquès, Joan; Cervelló Pastor, Cristina (IEEE, 2008-11)
    Conference lecture
    Open Access
    Optical Burst Switching (OBS) is a promising technology for future optical networks. Due to its less complicated implementation using current optical and electrical components, OBS is seen as the first step towards the ...
  • Distributed Resources Assignment for Optical Burst Switching without Wavelength Conversion (Invited Paper) 

    Cervelló Pastor, Cristina; Triay Marquès, Joan; Sallent Ribes, Sebastián (2009-09)
    Conference report
    Open Access
    The amount of bursty Internet traffic leads to develop new architectures and technologies, such as Optical Burst Switching (OBS), to efficiently satisfy future bandwidth requirements. Burst loss probability is an important ...
  • Dynamic resource discovery protocol for software defined networks 

    Jiménez Agudelo, Yury Andrea; Cervelló Pastor, Cristina; García García, Aurelio Javier (2015-05-01)
    Article
    Open Access
    In Software Defined Networking (SDN), the network management is logically centralized but physically distributed among the controllers to improve the scalability compared with a completely centralized model. As an alternative ...
  • Dynamic service-aware reservation framework for multi-layer high-speed networks 

    Triay Marquès, Joan; Rousseau, Derek R.; Cervelló Pastor, Cristina; Vokkarane, Vinod M. (2011)
    Conference report
    Restricted access - publisher's policy
    Some current Internet applications (e.g., Grid/Cloud computing storage, video-conference) demand service differentiation, not only in terms of packet forwarding, but also at the connection level. To satisfy the demands ...
  • Edge nodes infrastructure placement parameters for 5G networks 

    Santoyo González, Alejandro; Cervelló Pastor, Cristina (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    5G scenarios entail stringent requirements such as ultra-low latency and ultra-high reliability. Consequently, bringing computing, storage and networking resources to the edge of the network has become a key element for ...
  • Enabling future internet research: the FEDERICA case 

    Naegele-Jackson, S.; Lopez, V.; Cervelló Pastor, Cristina; Power, G.; Ponce de Leon, M.; Giraudo, L.; Bianco, A.; Szegedi, P.; Riera, J. F.; García-Espín, Joan Antoni; Hidell, M.; Sjodin, P.; Soderman, P.; Ruffini, M.; O'Mahony, D. (2011-07)
    Article
    Restricted access - publisher's policy
    The Internet, undoubtedly, is the most influential technical invention of the 20th century that affects and constantly changes all aspects of our day-to-day lives nowadays. Although it is hard to predict its long-term ...
  • Energy-aware routing in multiple domains software defined networks 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (2016-12)
    Article
    Open Access
    The growing energy consumption of communication networks has attracted the attention of the networking researchers in the last decade. In this context, the new architecture of Software-Defined Networks (SDN) allows a ...
  • Energy efficiency and network performance: A reality check in SDN-based 5G systems 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (2017-12-14)
    Article
    Open Access
    The increasing power consumption and related environmental implications currently generated by large data networks have become a major concern over the last decade. Given the drastic traffic increase expected in 5G dense ...
  • ETDP: enhanced topology discovery protocol for software-defined networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
    Article
    Open Access
    Discovering network elements in a dynamic and optimized manner and being able to contend with ever-growing traffic is a key requirement for current networking environments. In software-defined networks (SDNs), the controller ...
  • Evaluating the impact of energy-aware routing on Software-Defined Networking performance 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (Editorial Universitat Politècnica de València, 2017)
    Conference report
    Open Access
    Increasing power consumption and CO2 emissions generated by large data networks have become a major concern over the last decade. For this problem, the emerging paradigm of Software-Defined Networks (SDN) can be seen as ...
  • Experimental demonstration of a novel QoS-aware hybrid optical network 

    Simeonidou, Dimitra; Escalona, Eduard; Qin, Yixuan; Zervas, Georgios; Triay Marquès, Joan; Zarris, George; Amaya González, Norberto; Nejabati, Reza; Cervelló Pastor, Cristina (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    This paper presents a hybrid optical test-bed controlled by a hardware-accelerated control plane capable of dynamically provisioning the most suitable route according to the requirements of the client technology and the ...