Ara es mostren els items 21-40 de 41

  • Innovative techniques for power consumption saving in telecommunication networks 

    Eramo, Vicenzo; Hesselbach Serra, Xavier; Luo, Yan (HINDAWI, 2014-05-05)
    Article
    Accés obert
  • Innovative techniques for power consumption saving in telecommunication networks 

    Hesselbach Serra, Xavier; Eramo, Vicenzo; Luo, Yan (2014-05-05)
    Article
    Accés obert
  • Inteligencia de red 

    Barba Martí, Antonio; Hesselbach Serra, Xavier (Edicions UPC, 2002)
    Llibre
    Accés restringit a la comunitat UPC
    Actualmente existe una necesidad cada vez mayor de ofrecer servicios de red avanzados, que proporcionen un alto valor añadido al cliente. Eso es ya posible gracias a las nuevas capacidades de computación añadidas a los ...
  • Making data centres fit for demand response: introducing GreenSDA and GreenSLA contracts 

    Basmadjian, Robert; Botero Vega, Juan Felipe; Giuliani, Giovanni; Hesselbach Serra, Xavier; Klingert, Sonja; de Meer, Hermann (2016-11-23)
    Article
    Accés obert
    The power grid has become a critical infrastructure, which modern society cannot do without. It has always been a challenge to keep power supply and demand in balance; the more so with the recent rise of intermittent ...
  • Management of resources under priorities in EON using a modified RDM based on the squatting-kicking approach 

    Hesselbach Serra, Xavier; Dantas, Joana; Amazonas, José Roberto de Almeida; Botero Vega, Juan Felipe; Piney da Silva, José Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The paper proposes a resources allocation method for EON based on a modified RDM using squatting and kicking strategies in order to prioritise the usage of channels and enhancing the total utilisation. It can also be used ...
  • MANTICORE II: IP Network as a Service Pilots at HEAnet, NORDUnet and RedIRIS 

    Cabello, Isidro; Simeonidou, Dimitra; Lonvich, Chris; Uze, Jean Marc; de Miguel, Tomas P.; Fischer, Lars; Wilson, Dave; Reijs, Victor; Grasa Gras, Eduard; Figuerola, Sergi; Barrera, Xavier; Ferrao, Laia; Baez, Carlos; Minoves, Pau; Hesselbach Serra, Xavier; Botero Vega, Juan Felipe (2010)
    Text en actes de congrés
    Accés obert
    MANTICORE II follows the Infrastructure as a Service (IaaS) paradigm to enable National Research and Education Networks (NRENs) and other e-infrastructure providers to enhance their service portfolio by building and piloting ...
  • Multi constraint network virtualization strategy based on Paths Algebra for non-linear parameters 

    Hesselbach Serra, Xavier; Amazonas, Jose Roberto; Gutiérrez Anato, Alejandro (Universitat de les Illes Balears, 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    One of the main challenges in network virtualization is the virtual network embedding problem (VNE). The objective of the VNE is to map a set of Virtual Network Requests (VNR) to physical nodes and links. VNR is composed ...
  • Nano-networks communication architecture: Modeling and functions 

    Galal, Akram; Hesselbach Serra, Xavier (2018-09-01)
    Article
    Accés obert
    Nano-network is a communication network at the Nano-scale between Nano-devices. Nano-devices face certain challenges in functionalities, because of limitations in their processing capabilities and power management. Hence, ...
  • Online power aware coordinated virtual network embedding with 5G delay constraint 

    Hejja, Khaled; Hesselbach Serra, Xavier (2018-12-15)
    Article
    Accés obert
    Solving virtual network embedding problem with delay constraint is a key challenge to realize network virtualization for current and future 5G core networks. It is an NP-Hard problem, composed of two sub-problems, one for ...
  • On the complex scheduling formulation of virtual network functions over optical networks 

    Ferrer Riera, Jordi; Hesselbach Serra, Xavier; Escalona Zorita, Eduard; García Espin, Joan Antoni; Grasa, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Software-Defined Networking and Network Functions Virtualisation has brought a revolution within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same ...
  • Optimal mapping of virtual networks with hidden hops 

    Botero Vega, Juan Felipe; Hesselbach Serra, Xavier; Fischer, Andreas; de Meer, Hermann (2012-12-01)
    Article
    Accés obert
    Network virtualization has emerged as a solution for the Internet inability to address the required challenges caused by the lack of coordination among Internet service providers for the deployment of new services. The ...
  • Optimization model for bandwidth allocation in a network virtualization environment 

    Botero Vega, Juan Felipe; Hesselbach Serra, Xavier (2009)
    Text en actes de congrés
    Accés obert
    Bandwidth allocation is one of the main problems in network virtualization. Mechanisms to allocate bandwidth may avoid bottlenecked virtual links. This paper proposes a model based on optimization theory, to distribute the ...
  • Planning of dynamic virtual optical cloud infrastructures: the GEYSERS approach 

    Tzanakaki, Anna; Anastasopoulos, Markos; Landi, Giada; Bernini, Giacomo; Ciulli, Nicola; Riera, Jordi; Escalona Zorita, Eduard; García Espin, Joan Antoni; Hesselbach Serra, Xavier; Figuerola Fernández, Sergi; Peng, Shuping; Nejabati, Reza; Simeonidou, Dimitra; Parniewicz, Damian; Belter, Bartosz (2014-01-01)
    Article
    Accés restringit per política de l'editorial
    This article focuses on planning and replanning of virtual infrastructures over optical cloud infrastructures comprising integrated optical network and IT resources. This concept has been developed in the context of the ...
  • Problems in dynamic bandwidth allocation in connection oriented networks 

    Hesselbach Serra, Xavier (Springer, 2009)
    Capítol de llibre
    Accés restringit per política de l'editorial
  • Routing with prioritization based on statistics in OBS networks 

    Escolar Díaz, Mariana; Hesselbach Serra, Xavier (2009)
    Text en actes de congrés
    Accés obert
    This paper introduces a new strategy to provide QoS in IP/OBS networks, using Routing with Prioritization Based on Statistics (RPBS). This proposal uses the feedback scheme in optical networks to provide statistical knowledge ...
  • Squat-based resource management strategy for enabling shared infrastructures over optical networks 

    García-Espín, Joan Antoni; Hesselbach Serra, Xavier (Marian Marciniak, IEEE, 2010)
    Text en actes de congrés
    Accés obert
    This paper proposes a new paradigm and strategy for resource management in optical networks considering that resources allocated to a user or service can be squatted in by third parties temporarily in order to provide ...
  • Strategy for IP traffic support with QoS in OBS networks 

    Hesselbach Serra, Xavier; Huerta, Mónica; Rodolfo, Alvizu (Marian Marciniak, 2008)
    Text en actes de congrés
    Accés obert
    This paper presents a new strategy for burst reservation in OBS networks for the transport of IP/DiffServ traffics with Quality of Service (QoS) constraints using MPLS. The current resource reservation protocols research ...
  • The Bottlenecked Virtual Network Problem in Bandwidth Allocation for Network Virtualization 

    Botero Vega, Juan Felipe; Hesselbach Serra, Xavier (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Internet is becoming unable to overcome the challenges required by new services due to the lack of coordination among Internet service providers. This situation, frequently called network ossification, makes increasingly ...
  • Virtual Infrastructures as a service enabling converged optical networks and Data Centres 

    Ferrer Riera, Jordi; Tzanakaki, Anna; Antonescu, Alexandru-Florian; Anastasopoulos, Markos; García Espin, Joan Antoni; Escalona Zorita, Eduard; Peng, Shuping; Landi, Giada; Bernini, Giacomo; Belter, Bartosz; Parniewicz, Damian; Hesselbach Serra, Xavier; Figuerola Fernández, Sergi; Simeonidou, Dimitra (2014-08)
    Article
    Accés restringit per política de l'editorial
    Cloud computing service emerged as an essential component of the Enterprise IT infrastructure. Migration towards a full range and large-scale convergence of Cloud and network services has become the current trend for ...
  • Virtual network embedding: a survey 

    Fischer, Andreas; Botero Vega, Juan Felipe; Beck, Michael Till; de Meer, Hermann; Hesselbach Serra, Xavier (IEEE Computer Society Publications, 2013-10)
    Article
    Accés restringit per política de l'editorial
    Network virtualization is recognized as an enabling technology for the future Internet. It aims to overcome the resistance of the current Internet to architectural change. Application of this technology relies on algorithms ...