Now showing items 21-40 of 81

  • A survey on physical layer impairments aware routing and wavelength assignment algorithms in optical networks 

    Azodolmolky, S; Klinkowski, Miroslaw; Marín Tordera, Eva; Careglio, Davide; Solé Pareta, Josep; Tomkos, Ioannis (2009-03)
    Article
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    Optical networks are moving from opaque and translucnet architectures towards all-optical (transparent) architecutres. In translucent architectures a small amount of regeneration (e.g. optical-electronic-optical conversion) ...
  • Benefits of programmable topological routing policies in RINA-enabled large-scale datacenters 

    Leon Gaixas, Sergio; Perelló Muntan, Jordi; Grasa, Eduard; Lopez, Diego; Aranda Gutiérrez, Pedro Andrés; Careglio, Davide (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
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    With the proliferation of cloud computing and the expected requirements of future Internet of Things (IoT) and 5G network scenarios, more efficient and scalable Data Centers (DCs) will be required, offering very large pools ...
  • BER improvement using optical gain clamped amplifier for burst transmission and critical cases studies 

    Zannin, Marcelo; Ennser, Karin; Taccheo, Stefano; Careglio, Davide; Solé Pareta, Josep; Aracil Rico, Javier (IEEE Press and Wiley, 2009-03-22)
    Conference report
    Open Access
    This paper demonstrates significant BER improvement in burst traffic transmission using optical-gain clamped amplifiers. Critical chaotic cases are identified for peculiar burst sequences and their impact in transmission ...
  • CAPEX study for grid dependent multi-layer IP/MPLS-over-EON using relative BV-WSS costs 

    Pedrola Escribà, Òscar; Velasco Esteban, Luis Domingo; Fernández-Palacios, Juan Pedro; Castro Casales, Alberto; Careglio, Davide; Junyent Giralt, Gabriel (2012)
    Conference report
    Open Access
    The impact of the frequency grid on the CAPEX required to deploy a multi-layer IP/MPLS-over-EON is analyzed. Results showing significant savings at the electronic layer motivate the introduction of narrower grids with ...
  • Channel allocation in dense wavelength division multiplexing radio-over-fiber networks 

    Klinkowski, Miroslaw; Jaworski, Marek; Careglio, Davide (2010)
    Conference report
    Open Access
    In this paper we address the problem of the Radio-over-Fiber (RoF) network design. In particular, we focus on a DWDM RoF network for which we formulate a maximal service RoF channel allocation (MSCA) problem. Although MSCA ...
  • Cross-layer enabled translucent optical network with real-time impairment awareness 

    Pedrola Escribà, Òscar; Bathula, Balagangadhar G.; Wang, Michael; Ahsan, Atiyah K M; Careglio, Davide; Bergman, Keren (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    The existing dimensioning strategy for translucent, sub-wavelength switching architectures relies on over-provisioning, and consequently, overuse of costly, power-consuming optical-electrical-optical (O/E/O) regenerators. ...
  • Development and experimentation towards a multicast-enabled Internet 

    Careglio, Davide; Papadimitriou, Dimitri; Agraz Bujan, Fernando; Sahhaf, S; Perelló Muntan, Jordi; Tavernier, W; Spadaro, Salvatore; Colle, Didier (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
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    In this paper, we report our development experience and experimentation studies of two multicast routing schemes for the Internet, namely, PIM-SSM and GCMR. We detail their implementation over the Quagga open ...
  • Dynamic compact multicast routing on power-law graphs 

    Pedroso, Pedro; Papadimitriou, Dimitri; Careglio, Davide (IEEE, 2011)
    Conference report
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    Compact routing schemes address the fundamental tradeoff between the memory space required to store the routing table entries and the length of the routing paths that these schemes produce. This paper introduces the first ...
  • Eco-sustainable routing in optical networks 

    Ricciardi, Sergio; Wang, Jiayuan; Palmieri, Francesco; Careglio, Davide; Manolova, Anna; Santos Boada, Germán (2013-12-01)
    Article
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    It is quite easy to foresee that in the next years, the future generation ultra-high speed network infrastructures and equipments will be no longer constrained only by their pure transport capacity, but also by their ...
  • Effective amplification of real WDM burst traffic using optical gain clamping 

    Zannin, Marcelo; Taccheo, Stefano; Ennser, Karin; Careglio, Davide; Solé Pareta, Josep (2008-05-04)
    Conference report
    Open Access
    Experimental studies of real optical burst traffic in WDM systems are performed with optical gain clamping for stabilizing the EDFA amplification. Impairments of power variation due to burst are shown to be negligible.
  • End-user traffic policing for QoS assurance in polyservice RINA networks 

    León Gaixas, Sergio; Perelló Muntan, Jordi; Careglio, Davide; Grasa, Eduard; Tarzan Lorente, Miquel (2019-03)
    Article
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    Looking at the ever-increasing amount of heterogeneous distributed applications supported on current data transport networks, it seems evident that best-effort packet delivery falls short to supply their actual needs. ...
  • Energy aware paradigm for energy efficient ICT: a systemic approach 

    Ricciardi, Sergio; Careglio, Davide; Santos Boada, Germán; Solé Pareta, Josep (2010)
    Conference report
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    In this work we describe the Energy Aware Paradigm we believe should be adopted for successfully designing and deploying energy efficient ICT (Information and Communication Technologies) based systems.
  • Energy-aware routing optimization in dynamic GMPLS controlled optical networks 

    Wang, J; Ricciardi, Sergio; Fagertun, A.M.; Ruepp, Sarah; Careglio, Davide; Dittmann, L. (IEEE, 2012)
    Conference report
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    In this paper, routing optimizations based on energy sources are proposed in dynamic GMPLS controlled optical networks. The influences of re-routing and load balancing factors on the algorithm are evaluated, with a focus ...
  • Energy-oriented models for WDM networks 

    Ricciardi, Sergio; Careglio, Davide; Palmieri, Francesco; Fiore, Ugo; Santos Boada, Germán; Solé Pareta, Josep (2010)
    Conference report
    Open Access
    A realistic energy-oriented model is necessary to formally characterize the energy consumption and the consequent carbon footprint of actual and future high-capacity WDM networks. The energy model describes the energy ...
  • Evaluating energy savings in WoL-enabled networks of PCs 

    Ricciardi, Sergio; Santos Boada, Germán; Careglio, Davide; Palmieri, Francesco; Fiore, Ugo (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
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    In this paper we present EnergySave, a smart energy-saving system that, by leveraging the consolidated WoL (Wake on LAN) technology, allows the remote wake-up of PCs from a centralized management server, providing easy and ...
  • 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 ...
  • GPON and EP2P: a techno-economic study 

    Ricciardi, Sergio; Santos Boada, Germán; Careglio, Davide; Domingo Pascual, Jordi (2012)
    Conference report
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    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 ...
  • ILP modeling of many-to-many replicated multimedia communication 

    Walkowiak, Krzysztof; Bulira, Damian; Careglio, Davide (2013-09-01)
    Article
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    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 ...
  • 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
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    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
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    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. ...