Now showing items 41-60 of 94

    • Experimental study on the impact of regenerator placement strategies when dynamically provisioning in translucent GMPLS WSON networks 

      Martínez, Ricardo; Casellas, Ramon; Muñoz, Raul; García Manrubia, Bélen; Pavón Mariño, Pablo; Klinkowski, Miroslaw; Careglio, Davide (Optical Society of America, 2011)
      Conference report
      Open Access
      The impact of the regenerator placement strategies when dynamically provisioning connections in translucent WSON is studied. The evaluation is experimentally conducted in the ADRENALINE testbed in terms of the connection ...
    • Experimenting with real application-specific QoS guarantees in a large-scale RINA demonstrator 

      Perelló Muntan, Jordi; López Brescó, Albert; Careglio, Davide (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      This paper reports the definition, setup and obtained results of the Fed4FIRE + medium experiment ERASER, aimed to evaluate the actual Quality of Service (QoS) guarantees that the clean-slate Recursive InterNetwork ...
    • GPON and EP2P: a techno-economic study 

      Ricciardi, Sergio; Santos Boada, Germán; Careglio, Davide; Domingo Pascual, Jordi (2012)
      Conference report
      Restricted access - publisher's policy
      New services like Video on demand/Internet Protocol Television, Voice over IP and high speed Internet access demand very high bandwidth to provide Triple Play services to the customers. The ADSL/ADLS2+ and the VDSL/VDSL2 ...
    • Guaranteeing QoS requirements in long-haul RINA networks 

      León Gaixas, Sergio; Perelló Muntan, Jordi; Careglio, Davide; Tarzan Lorente, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      In the last years, networking scenarios have been evolving, hand-in-hand with new and varied applications with heterogeneous Quality of Service (QoS) requirements. These requirements must be efficiently and effectively ...
    • Hardware leverages for energy reduction in large-scale distributed systems 

      Careglio, Davide; Da Costa, Georges; Ricciardi, Sergio (Wiley, 2015-03-01)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This chapter provides the summary and references on existing and future leverages to adapt the underlying hardware infrastructures of large-scale distributed computing systems in order to decrease their energy consumption. ...
    • ILP modeling of many-to-many replicated multimedia communication 

      Walkowiak, Krzysztof; Bulira, Damian; Careglio, Davide (2013-09-01)
      Article
      Restricted access - publisher's policy
      On-line communication services were evolving from a simple text-based chats towards sophisticated videopresence appliances. The bandwidth consumption of those services is constantly growing due to the technology development ...
    • ILP modeling of many-to-many transmissions in computer networks 

      Walkowiak, Krzysztof; Bulira, Damian; Careglio, Davide (Polish Academy of Sciences, 2012)
      Conference report
      Open Access
      Information flow in nowadays networks spreads in the exponential way. This fact is caused by the intensive changes in the Internet communication paradigms. Transmission in the Internet evolved from the simple one-to-one ...
    • Internet routing paths stability model and relation to forwarding paths 

      Papadimitriou, Dimitri; Careglio, Davide; Tarissan, Fabien; Demeester, Piet M.A. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Open Access
      Analysis of real datasets to characterize the local stability properties of the Internet routing paths suggests that extending the route selection criteria to account for such property would not increase the routing path ...
    • 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)
      Part of book or chapter of book
      Restricted access - publisher's policy
      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 ...
    • Iterative research method applied to the design and evaluation of a dynamic multicast routing scheme 

      Papadimitriou, Dimitri; Coras, Florin-Tudorel; Rodríguez Natal, Alberto; Carela Español, Valentín; Careglio, Davide; Fàbrega, Lluís; Vila, Pere; Demeester, Piet M.A. (Springer-Verlag Berlin Heidelberg, 2013)
      Conference report
      Restricted access - publisher's policy
      Following the iterative research cycle process, this chapter elaborates a methodology and documents the steps followed for the design of a dynamic multicast routing algorithm, referred to as Greedy Compact Multicast Routing. ...
    • Joint content placement and lightpath routing and spectrum assignment in CDNs over elastic optical network scenarios 

      Perelló Muntan, Jordi; Walkowiak, Krzysztof; Klinkowski, Miroslaw; Spadaro, Salvatore; Careglio, Davide (2016-03-01)
      Article
      Open Access
      In this work, we address the problem of jointly deciding the placement of the contents delivered by a Content Distribution Network (CDN) among the available data centers, together with the allocation of the lightpaths ...
    • Keeping the packet sequence in optical packet-switched networks 

      Callegati, Franco; Careglio, Davide; Cerroni, Walter; Muretto, Giovanni; Raffaelli, Carla; Solé Pareta, Josep; Zaffoni, Paolo (2005-11-07)
      Article
      Restricted access - publisher's policy
      This paper deals with optical packet switches with limited buffer capabilities, subject to asynchronous, variable-length packets and connection-oriented operation. The focus is put on buffer scheduling policies and queuing ...
    • Measurement-based experimental research methodology 

      Papadimitriou, Dimitri; Fàbrega Soler, LLuís; Vilà Talleda, Pere; Careglio, Davide; Demeester, Piet M.A. (Springer, 2013)
      Conference report
      Open Access
      Aiming at creating a dynamic between elaboration, realization, and validation by means of iterative cycles of experimentation, Future Internet Research and Experimentation (FIRE) projects have been rapidly confronted to ...
    • Measurement-based research: methodology, experiments, and tools 

      Papadimitriou, Dimitri; Fàbrega, Lluís; Vila Fumas, Pere; Careglio, Davide; Demeester, Piet (2012-10)
      Article
      Restricted access - publisher's policy
      In this paper, we report the results of the workshop organized by the FP7 EULER project on measurement-based research and associated methodology, experiments and tools. This workshop aimed at gathering all Future Internet ...
    • Metaheuristic hybridizations for the regenerator placement and dimensioning problem in sub-wavelength switching optical networks 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Velasco Esteban, Luis Domingo; Bergman, K.; Solé Pareta, Josep (Elsevier, 2013-02-01)
      Article
      Restricted access - publisher's policy
      Physical layer impairments severely limit the reach and capacity of optical systems, thereby hampering the deployment of transparent optical networks (i.e., no electrical signal regenerators are required). Besides, the ...
    • Modelling and performance evaluation of a national scale switchless based network 

      Careglio, Davide; Solé Pareta, Josep; Junyent Giralt, Gabriel; Spadaro, Salvatore; Masip Torne, Jaume; Noguera Serra, Juan José (Springer, 2000)
      Conference report
      Restricted access - publisher's policy
      In a packet switching based scenario, optical technologies can not completely overcome the problem of insufficient network capacity, due to limitations produced by the presence of electronic switches and regenerators in ...
    • Modelling and performance evaluation of a translucent OBS network architecture 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE Computer Society Publications, 2010)
      Conference report
      Open Access
      Most research works in optical burst switching (OBS) networks do not take into account the impact of physical layer impairments (PLIs) either by considering fully transparent (i.e., using optical 3R regeneration) or opaque ...
    • Non-linear optimization for multi-path source routing in OBS networks 

      Klinkowski, Miroslaw; Pioro, Michal; Careglio, Davide; Marciniak, Marian; Solé Pareta, Josep (2007-12)
      Article
      Open Access
      Optical Burst Switching (OBS) architectures without buffering capabilities are sensitive to burst losses. A proper routing strategy may help to reduce such congestion. In this letter we present a novel approach for OBS ...
    • Nonparametric statistical methods to analyze the internet connectivity reliability 

      Papadimitriou, Dimitri; Careglio, Davide (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      Facing computational complexity when modeling network reliability by means of parametric models and corresponding statistical methods, in the present study, we apply nonparametric statistical methods, such as the Kaplan-Meier ...
    • Offline impairment-aware RWA and regenerator placement in translucent optical networks 

      García Manrubia, Bélen; Pavón Mariño, Pablo; Aparicio Pardo, Ramón; Klinkowski, Miroslaw; Careglio, Davide (2010-09-29)
      External research report
      Open Access
      In translucent optical networks the physical layer impairments degrading the optical signal are considered in the network design. In this paper we investigate the offline problem of Routing and Wavelength Assignment (RWA) ...