Ara es mostren els items 1-20 de 27

  • A New Parametric Regenerator Allocation Scheme taking into account Inaccurate Physical Information 

    Marín Tordera, Eva; Yannuzzi, Marcelo; Serral Gracià, René; Masip Bruin, Xavier; Sánchez López, Sergio (2010-06-08)
    Text en actes de congrés
    Accés obert
    Regenerator allocation consists on selecting which of the already installed regenerators in a translucent network may be used according to the dynamic traffic requests in order to maximize the quality of the optical ...
  • A Proposal for Inter-domain QoS Rounting Based on Distributed Overlay Entities and QBGP 

    Yannuzzi, Marcelo; Fonte, Alexandre; Masip Bruin, Xavier; Monteiro, Edmundo; Sánchez López, Sergio; Curado, Marilia; Domingo Pascual, Jordi (2004-09)
    Article
    Accés obert
    This paper proposes a novel and incremental approach to Inter-Domain QoS Routing. Our approach is to provide a completely distributed Overlay Architecture and a routing layer for dynamic QoS provisioning, and to use QoS ...
  • A simulation study of combined routing and contention resolution algorithms in connection-oriented OPS network scenario 

    Klinkowski, Miroslaw; Careglio, Davide; Masip Bruin, Xavier; Spadaro, Salvatore; Sánchez López, Sergio; Solé Pareta, Josep (IEEE Press and Wiley, 2004-10-12)
    Text en actes de congrés
    Accés obert
    Connection-oriented optical packet-switched network integrates MPLS and OPS layers to exploit the best of electronic and optical technologies. In particular, routing components use enhanced routing algorithms to compute ...
  • Assessment activities in Mechanics: How many of them are enough? 

    Urbina Pons, Cristina; Sánchez López, Sergio (2017)
    Text en actes de congrés
    Accés obert
    The following presents the results of a set of continuous assessment activities undertaken in the subjects of Theory of Mechanics and Mechanisms, in order to analyse if the amount of the assessment activities performed ...
  • Cross-layer multimedia quality enforcement through user aware information in wireless networks 

    Serral Gracià, René; Yannuzzi, Marcelo; Marín Tordera, Eva; Masip Bruin, Xavier; Sánchez López, Sergio (2010-06-14)
    Text en actes de congrés
    Accés obert
    Quality assessment of multimedia traffic is a hot topic. In this paper we present a Multimedia Management System, which can be used on-line to assess and guarantee the quality of multimedia traffic in a wired and wireless ...
  • Cross-talk effects on the Regenerator Allocation optimization 

    Marín Tordera, Eva; Masip Bruin, Xavier; Yannuzzi, Marcelo; Serral Gracià, René; Sánchez López, Sergio (2011)
    Text en actes de congrés
    Accés obert
    This paper studies the impact of considering crosstalk effects in the IA-RWA process and in the regenerator allocation algorithms. First of all, we evaluate if the regenerator allocation optimization is still useful when ...
  • Effcient network performance assessment using Inter-Packet Arrival Times 

    Serral Gracià, René; Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio (IEEE Computer Society Publications, 2010)
    Text en actes de congrés
    Accés obert
    Network performance measurements have been broadly used in order to debug and to assess the reliability of the network. In general performance measurement is a resource consuming process, which in practice derives in ...
  • Encaminamiento interdominio con calidad de servicio basado en Overlay Entities distribuidas y QBGP 

    Yannuzzi, Marcelo; Fonte, A; Masip Bruin, Xavier; Monteiro, E; Sánchez López, Sergio; Curado, M; Domingo Pascual, Jordi (2005-05)
    Article
    Accés obert
    Este documento propone un nuevo enfoque al tema de encaminamiento inter-domino con Calidad de Servicio(QoS). Nuestro enfoque consiste en proporcionar una arquitectura overlay completamente distribuida así como una nueva ...
  • Implantació i Millora de l'European Project Semester (EPS) a l'EPSEVG 

    Segalàs Coral, Jorge; André, Michel; Arnó Macià, Elisabet; Català Mallofré, Andreu; Castell Balaguer, Joan Vicent; Domingo Gou, Marta; Guasch Murillo, Daniel; Hernández Gómez, M. Angeles; Llorens García, Ariadna; Martí Colom, Pau; Parisi Baradad, Vicenç; Río Fernandez, Joaquín del; Sánchez López, Sergio; Shariat Panahi, Shahram; Agramunt Ciurana, Víctor Manuel; Perez, Jaume; Ruiz, Xavier; Colell, Kenneth; Castelló, Sandra (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
    Comunicació de congrés / Text en actes de congrés
    Accés obert
    L'EPSEVG de la UPC va implantar l’European Project Semester (EPS) un programa formatiu innovador que respon a les demandes plantejades per la societat i l’Espai Europeu d’Ensenyament Superior (EEES) durant el curs ...
  • Interconnection of IP/MPLS Networks Through ATM and Optical Backbones using PNNI Protocols 

    Sánchez López, Sergio (Universitat Politècnica de Catalunya, 2003-10-07)
    Tesi
    Accés obert
    Las redes de transporte se mueven hacia un modelo de redes formadas por routers IP/MPLS (Internet Protocol/Multiprotocol Laebel Switching) de altas prestaciones interconectadas a través redes troncales inteligentes. ...
  • Introduction to IP over WDM 

    Spadaro, Salvatore; Careglio, Davide; Aracil Rico, Javier; Fernández Palacios, Juan Pedro; Jajszczyk, Andrzej; Larrabeiti, David; López, Víctor; Masip Bruin, Xavier; Sánchez López, Sergio (Springer, 2009-06-01)
    Capítol de llibre
    Accés restringit per política de l'editorial
    The simple idea of having IP traffic directly transported over optical Wavelength Division Multiplexing (WDM) technology (“Internet Protocol (IP) over WDM”) has been envisioned as the future for the telecommunication ...
  • Managing resilience in carrier grade networks: Survey, open issues and trends 

    Ramirez Almonte, Wilson; Masip Bruin, Xavier; Marín Tordera, Eva; Sánchez López, Sergio (2015-05-01)
    Article
    Accés obert
    IP/MPLS and Optical technologies are the foundations of current Carrier-Grade Networks (CGNs), due to both the flexibility of IP/MPLS to provide services with distinct requirements and the high transport capacity offered ...
  • OBGP+: A Simple Approach to Drastically Improve OBGP 

    Yannuzzi, Marcelo; Masip Bruin, Xavier; Fabregó, Guillem; Sánchez López, Sergio; Solé Pareta, Josep (IEEE Computer Society Publications, 2008)
    Text en actes de congrés
    Accés obert
    During the last few years, the research community has shown an increasing interest in the subject of inter-domain routing in optical networks, so new approaches like the optical extension of BGP, namely OBGP, have arisen. ...
  • OBGP+: An improved path-vector protocol for multi-domain optical networks 

    Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio; Marín Tordera, Eva (2009-04)
    Article
    Accés obert
    One of the essential components for the dynamic provisioning of lightpaths across multiple domains is the Routing and Wavelength Assignment (RWA) strategy adopted. The consolidation that path-vector protocols have had in ...
  • On the challenges of establishing disjoint QoS IP/MPLS paths across multiple domains 

    Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio; Domingo Pascual, Jordi; Orda, A; Sprintson, A (2006-12)
    Article
    Accés obert
    MPLS is being actively adopted as the core switching infrastructure at the intradomain level. This trend is mainly attributable to the undeniable potential of MPLS in terms of virtual private networks (VPNs) management, ...
  • Performance of translucent optical networks under dynamic traffic and uncertain physical-layer information 

    Yannuzzi, Marcelo; Quagliotti, Marco; Maier, G.; Marín Tordera, Eva; Masip Bruin, Xavier; Sánchez López, Sergio; Erangoli, Walter; Tamiri, G (IEEE Computer Society Publications, 2009)
    Text en actes de congrés
    Accés obert
    This paper investigates the performance of translucent Optical Transport Networks (OTNs) under different traffic and knowledge conditions, varying from perfect knowledge to drifts and uncertainties in the physical-layer ...
  • Prediction-based routing as RWA in multilayer traffic engineering 

    Puype, Bart; Marín Tordera, Eva; Colle, D.; Sánchez López, Sergio; Pickavet, Mario; Masip Bruin, Xavier; Demeester, Piet (2012-04)
    Article
    Accés obert
    Multilayer traffic engineering (MLTE) allows coping with ever-increasing and varying traffic demands in IP-over-Optical multilayer networks. It utilizes cross-layer TE (Traffic Engineering) techniques to provision optical ...
  • Quality of experience aware multimedia provisioning with cross-layer network management 

    Serral Gracià, René; Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio (2010)
    Text en actes de congrés
    Accés obert
    This paper presents a Cross-layer Network Management System (NMS) that allows Service Providers (SPs) to perform cost-effective network resource reservations with their Network Operators (NOs). The novelty of our NMS is ...
  • Quality of experience based provisioning for service providers 

    Serral Gracià, René; Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio (2009-12-14)
    Text en actes de congrés
    Accés obert
    Nowadays Network Operators (NOs) are providing service guaranties to customers by largely overprovisioning their networks, but as the Internet keeps growing, this approach is unveiling important issues in terms of cost and ...
  • Quality of experience enforcement in wireless networks 

    Serral Gracià, René; Yannuzzi, Marcelo; Marín Tordera, Eva; Masip Bruin, Xavier; Sánchez López, Sergio (Springer, 2010-06-01)
    Text en actes de congrés
    Accés obert
    In this paper we present a Multimedia Wireless Management System, which can be used on-line to assess and guarantee the quality of multimedia traffic in a wireless network. The proposed platform uses both network and ...