Now showing items 25-36 of 44

    • 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)
      Conference report
      Open Access
      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 ...
    • 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
      Open Access
      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 ...
    • Toward a new route control model for multidomain optical networks 

      Yannuzzi, Marcelo; Masip Bruin, Xavier; Fabrego, G; Sánchez López, Sergio; Sprintson, A; Orda, A (2008-06)
      Article
      Open Access
      The design of the control plane model for multidomain optical networks poses complex challenges and introduces many open problems. Some initiatives have proposed Optical BGP (OBGP), which is an extension of BGP supporting ...
    • Improving IA-RWA algorithms in translucent networks by regenerator allocation 

      Marín Tordera, Eva; Martinez, R; Muñoz, R; Casellas, Ramon; Solé Pareta, Josep (IEEE, 2009)
      Conference report
      Open Access
      In this paper we present the impact of considering regenerator allocation when selecting routes and wavelengths in translucent networks. In the regular operation of translucent networks, i.e. with dynamic traffic, we assume ...
    • On the offline physical layer impairment aware RWA algorithms in transparent optical networks: state-of-the-art and beyond 

      Azodolmolky, Siamak; Pointurier, Yvan; Klinkowski, Miroslaw; Marín Tordera, Eva; Careglio, Davide; Solé Pareta, Josep; Angelou, Marianna; Tomkos, Ioannis (IEEE Press and Wiley, 2009-02-18)
      Conference report
      Open Access
      In transparent optical networks with no regeneration, the problem of capacity allocation to traffic demands is called "Roting and Wavelength Assignment". Much work on this topic recently has focused on the dynamic case, ...
    • Insights on the Internet routing scalability issues 

      Castro Casales, Alberto; Germán Duarte, Martín; Yannuzzi, Marcelo; Masip Bruin, Xavier (2009-12-14)
      Conference report
      Open Access
      In recent years, the size and dynamics of the global routing table have increased rapidly along with an increase in the number of edge networks. The relation between edge network quantity and routing table size/dynamics ...
    • 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)
      Conference report
      Open Access
      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 ...
    • Regenerator allocation in translucent networks under inaccurate physical information 

      Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio; Martínez, Ricardo; Muñoz, Raul; Casellas, Ramon (2009-12-14)
      Conference report
      Open Access
      Optimized regenerator allocation techniques select which of the already installed regenerators in a translucent network must be used in order to maximize the quality of the optical signal while minimizing the opaqueness ...
    • Regenerator allocation in WDM networks with uncertainities in the Q factor 

      Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Serral Gracià, René; Sánchez López, Sergio (2010-06-14)
      Conference report
      Open Access
      The performance of the regenerator allocation algorithms in WDM networks strongly depends on the accuracy of the physical-layer information such as the Q factor. In a translucent WDM network the already installed ...
    • The Effects of Optimized Regenerator Allocation in Trans-lucent Networks under Inaccurate Physical information 

      Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio; Martínez, Ricardo; Muñoz, Raul; Casellas, Ramon; Maier, Guido (2010-02-04)
      Conference lecture
      Open Access
      Optimized regenerator allocation techniques select which of the already installed regenerators in a translucent network must be used in order to maximize the quality of the optical signal while minimizing the opaqueness ...
    • Avoiding Path-Vectors in Multi-Domain Optical Networks 

      Yannuzzi, Marcelo; Masip Bruin, Xavier (IEEE Computer Society Publications, 2009)
      Conference report
      Open Access
      We show that a modified version of a path-vector protocol can drastically reduce the blocking and converge significantly faster, while exchanging less number of routing messages both during failure-free conditions and ...
    • Optical Multi-Domain Routing 

      Masip Bruin, Xavier; Yannuzzi, Marcelo (IEEE Computer Society Publications, 2009)
      Conference report
      Open Access
      Optical networks provide a clear opportunity to redesign the multi-domain routing paradigm. This paper reviews the current limitations in multi-domain routing as well as some of the research lines in the optical area.