Now showing items 1-20 of 78

    • A Data Distribution Service in a hierarchical SDN architecture: implementation and evaluation 

      Llorens Carrodeguas, Alejandro; Cervelló Pastor, Cristina; Leyva Pupo, Irian (2019)
      Conference report
      Open Access
      Software-defined networks (SDNs) have caused a paradigm shift in communication networks as they enable network programmability using either centralized or distributed controllers. With the development of the industry and ...
    • 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 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 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 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 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 framework for the joint placement of edge service infrastructure and User Plane Functions for 5G 

      Leyva Pupo, Irian; Santoyo González, Alejandro; Cervelló Pastor, Cristina (Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-14)
      Article
      Open Access
      Achieving less than 1 ms end-to-end communication latency, required for certain 5G services and use cases, is imposing severe technical challenges for the deployment of next-generation networks. To achieve such an ambitious ...
    • 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
      Restricted access - publisher's policy
      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 ...
    • A multi-Site NFV testbed for experimentation with SUAV-based 5G vertical services 

      Vidal Fernández, Iván; Nogales Dorado, Borja; Valera Pintor, Francisco; González Blázquez, Luis Félix; Sánchez Aguero, Víctor; Jacob Taquet, Eduardo; Cervelló Pastor, Cristina (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-12)
      Article
      Open Access
      With the advent of 5G technologies, vertical markets have been placed at the forefront, as fundamental drivers and adopters of technical developments and new business models. Small Unmanned Aerial Vehicles (SUAVs) are ...
    • 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 ...
    • 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 ...
    • 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 ...