Now showing items 1-20 of 66

  • Achieving energy efficiency: an energy-aware approach in SDN 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    Achieving energy efficiency has recently become an essential aim of networking research due to the ever increasing power consumption and CO2 emissions generated by large data networks. For this problem, the emerging paradigm ...
  • A distributed algorithm for topology discovery in Software-Defined Networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (Springer, 2016-06-07)
    Part of book or chapter of book
    Restricted access - publisher's policy
    To ensure a proficient topology discovery service in Software-Defined Networks (SDN), we propose a simple agents-based mechanism to improve the efficiency of the topology discovery process. In this work, an algorithm for ...
  • A distributed algorithm for topology discovery in software-defined networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (Springer, 2016)
    Conference report
    Restricted access - publisher's policy
    To ensure a proficient topology discovery service in Software-Defined Networks (SDN), we propose a simple agents-based mechanism to improve the efficiency of the topology discovery process. In this work, an algorithm for ...
  • A distributed energy-aware routing algorithm in software-defined networks 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (2016)
    Conference report
    Restricted access - publisher's policy
    In this paper we address the issue of designing a novel distributed routing algorithm that optimizes the power consumption in large scale software-defined networks (SDN) with multiple domains. The solution proposed, called ...
  • A distributed energy-aware routing algorithm in Software-Defined Networks 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (Springer, 2016-06-07)
    Part of book or chapter of book
    Restricted access - publisher's policy
    In this paper we address the issue of designing a novel distributed routing algorithm that optimizes the power consumption in large scale software-defined networks (SDN) with multiple domains. The solution proposed, called ...
  • A framework for placement and optimization of network functions in 5G 

    Leyva Pupo, Irian; Cervelló Pastor, Cristina; Llorens Carrodeguas, Alejandro (Unión Científica Internacional de Radio (URSI), 2018)
    Conference report
    Restricted access - publisher's policy
    In this paper, we propose an architecture for the 5G core network using Software Defined Networks (SDN) and Network Functions Virtualization (NFV) technologies. Moreover, based on this architecture, we design a framework ...
  • A latency-constrained framework for edge nodes placement optimization in 5G networks 

    Santoyo González, Alejandro; Cervelló Pastor, Cristina (Unión Científica Internacional de Radio (URSI), 2018)
    Conference report
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    Latency is a main challenge for most 5G use cases, since mission critical environments are mostly delay sensitive. Edge Computing has become the main technological candidate to overcome this problem. However, under such ...
  • A LoRaWAN testbed design for supporting critical situations: prototype and evaluation 

    Navarro Ortiz, Jorge; Ramos Muñoz, Juan J.; López Soler, Juan M.; Cervelló Pastor, Cristina; Catalán Cid, Marisa (2019-01-01)
    Article
    Open Access
    The Internet of Things is one of the hottest topics in communications today, with current revenues of $151B, around 7 billion connected devices, and an unprecedented growth expected for next years. A massive number of ...
  • A modular simulation tool of an orchestrator for allocating virtual resources in SDN 

    García García, Aurelio Javier; Cervelló Pastor, Cristina; Jiménez Agudelo, Yury Andrea (2014-04)
    Article
    Open Access
    Software-Defined Networking (SDN) and Network Functions Virtualization (NFV) are technologies for enabling innovative network architectures. Nevertheless, a fundamental problem in instantiation of Virtual Networks (VNs), ...
  • A multi-objective routing strategy for QoS and energy awareness in software-defined networks 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo (2017-08-21)
    Article
    Open Access
    Energy consumption is a key concern in the deployment and operation of current data networks, for which Software-Defined Networks (SDN) have become a promising alternative. Although several works have been proposed to ...
  • Analytical blocking probability model for hybrid immediate and advance reservations in optical WDM networks 

    Triay Marquès, Joan; Cervelló Pastor, Cristina; Vokkarane, Vinod M. (2013)
    Article
    Restricted access - publisher's policy
    Immediate reservation (IR) and advance reservation (AR) are the two main reservation mechanisms currently implemented on large-scale scientific optical networks. They can be used to satisfy both provisioning delay and low ...
  • Analytical model for hybrid immediate and advance reservation in optical WDM networks 

    Triay Marquès, Joan; Cervelló Pastor, Cristina; Vokkarane, Vinod M. (IEEE, 2011)
    Conference lecture
    Restricted access - publisher's policy
    Current Internet and large-scale experimentation applications need to satisfy short provisioning delay and low blocking demands. Both can be guaranteed by using immediate reservation (IR) and advance reservation (AR), ...
  • An ant-based algorithm for distributed routing and wavelength assignment in dynamic optical networks 

    Triay Marquès, Joan; Cervelló Pastor, Cristina (2010-05)
    Article
    Open Access
    Future optical communication networks are expected to change radically during the next decade. To meet the demanded bandwidth requirements, more dynamism, scalability and automatism will need to be provided. This will ...
  • An Ant-based Algorithm for Distributed RWA in Optical Burst Switching 

    Triay Marquès, Joan; Cervelló Pastor, Cristina (IEEE, 2009-06-28)
    Conference lecture
    Open Access
    To meet the demanded bandwidth requirements of future optical communication networks, more dynamism, scalability and automatism will need to be provided, which will require, as well, new control plane designs to respond ...
  • An architecture for the 5G control plane based on SDN and data distribution service 

    Llorens Carrodeguas, Alejandro; Cervelló Pastor, Cristina; Leyva Pupo, Irian; López-Soler, Juan Manuel; Navarro Ortiz, Jorge; Exposito Arenas, José Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    The tremendous growth of services and costumers’ demands have rendered traditional networks inefficient. Telecommunication operators need a more flexible, scalable, faster and programmable architecture to offer users these ...
  • An online algorithm for dynamic NFV placement in cloud-based autonomous response networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana; Grosso, P. (2018-05-15)
    Article
    Open Access
    Autonomous response networks are becoming a reality thanks to recent advances in cloud computing, Network Function Virtualization (NFV) and Software-Defined Networking (SDN) technologies. These enhanced networks fully ...
  • An online power-aware routing in SDN with congestion-avoidance traffic reallocation 

    Fernández Fernández, Adriana; Cervelló Pastor, Cristina; Ochoa Aday, Leonardo; Grosso, P. (2018)
    Conference report
    Restricted access - publisher's policy
    Software-Defined Networks (SDN) can be seen as a promising alternative to achieve the long-awaited power efficiency in current communications systems. In these programmable networks a power-aware mechanism could be easily ...
  • An Optical Burst Switching Control Plane Architecture and its Implementation 

    Triay Marquès, Joan; Rubio, Jesús; Cervelló Pastor, Cristina (2006-09-18)
    Conference lecture
    Open Access
    This paper proposes a new design and implementation of a control plane for Optical Burst Switched networks. The design is based on the principles of generality, transparency, portability and efficiency. In this way, the ...
  • Bundles fragmentation in vehicular delay-tolerant networks 

    Magaia, N; Pereira, P. R.; Casaca, A.; Rodrigues, J.J.P.C.; Dias, J. A.; Isento, J. N.; Cervelló Pastor, Cristina; Gallego Ezpeleta, J. (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    Vehicular Delay-Tolerant Networks use the delaytolerant architecture and protocols to overcome the disruptions in network connectivity. These concepts help in cases where the network is sparse or with large variations ...
  • Current Trends of Topology Discovery in OpenFlow-based Software Defined Networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (2015-09)
    External research report
    Open Access
    The explosion of Internet services such as video on demand, big data, server virtualization and cloud services is among the trends driving the networking industry to change traditional network architectures to more flexible ...