Now showing items 1-16 of 16

  • A GRASP with path-relinking heuristic for the survivable IP/MPLS-over-WSON multi-layer network optimization problem 

    Pedrola Escribà, Òscar; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo; Careglio, Davide; González de Dios, Óscar; Comellas Colomé, Jaume (2013-12)
    Article
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    In this paper we deal with the survivable internet protocol (IP)/multi-protocol label switching (MPLS)-over-wavelength switched optical network (WSON) multi-layer network optimization problem (SIMNO). This problem entails ...
  • A performance survey on deflection routing techniques for OBS networks 

    Pedrola Escribà, Òscar; Rumley, Sébastien; Careglio, Davide; Klinkowski, Miroslaw; Pedroso, Pedro; Solé Pareta, Josep; Gaumier, Christian (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Conference report
    Open Access
    In this paper, we present a survey comparing different deflection routing based techniques applied to optical burst switching (OBS) networks. For such study we consider the E-OBS architecture proposed in [1] which is an ...
  • Adaptive burst admission and forwarding in OBS networks 

    Rumley, Sébastien; Pedrola Escribà, Òscar; Klinkowski, Miroslaw; Pedroso, Pedro; Gaumier, Christian; Careglio, Davide; Solé Pareta, Josep (IEEE, 2009-07-31)
    Conference report
    Open Access
    This paper addresses the problem of controlling the performance of optical burst switching (OBS) networks in presence of non-stationary traffic demands. We propose a joint burst admission control and forwarding mechanism ...
  • An analysis of Regenerator Placement strategies for a Translucent OBS network architecture 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (2010-09-28)
    External research 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 ...
  • AnyTraffic routing algorithm for label-based forwarding 

    Pedroso, Pedro; Pedrola Escribà, Òscar; Papadimitriou, Dimitri; Klinkowski, Miroslaw; Careglio, Davide (IEEE Press and Wiley, 2009-11-30)
    Conference report
    Open Access
    The high capacity provided by packet-switched networks is supporting the proliferation of bandwidth intensive multimedia applications which require multicasting capability. As a consequence on today’s networks, unicast ...
  • AnyTraffic routing algorithm for label-based forwarding 

    Pedroso, Pedro; Pedrola Escribà, Òscar; Papadimitriou, Dimitri; Careglio, Davide; Klinkowski, Miroslaw (2009-06-11)
    External research report
    Open Access
    The high capacity provided by packet-switched networks is supporting the proliferation of bandwidth intensive multimedia applications which require multicasting capability. As a consequence a mixed traffic scenario where ...
  • 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 ...
  • 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
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    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. ...
  • 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
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    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 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 ...
  • Offline routing and regenerator placement and dimensioning for translucent OBS networks 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
    Article
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    The deployment of translucent optical networks is considered the most promising short term solution to decrease costs and energy consumption in optical backbone networks. In fact, translucent wavelength switched optical ...
  • On the performance of flexgrid-based optical networks 

    Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc; Pedrola Escribà, Òscar; Castro Casales, Alberto; Klinkowski, Miroslaw; Careglio, Davide; Comellas Colomé, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    The ever increasing IP traffic volume has finally brought to light the high inefficiency of current wavelength-routed rigid-grid networks in matching the client layer requirements. Such an issue results in the deployment ...
  • On the physical impairments constraint in OBS networks 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (2010)
    Conference report
    Open Access
    The introduction of sub-wavelength switching is one of the main objectives of the future transparent optical mesh networks. One strong candidate is Optical Burst Switching (OBS) which improves the resource utilisation by ...
  • RRPD strategies for a T-OBS network architecture 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE, 2011)
    Conference report
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    In this paper, we deal with the physical layer impairments (PLIs) in optical burst switching (OBS). In particular we present a formulation of the routing and regenerator placement and dimensioning (RRPD) problem for a ...
  • Survivable IP/MPLS-Over-WSON multilayer network optimization 

    Ruiz Ramírez, Marc; Pedrola Escribà, Òscar; Velasco Esteban, Luis Domingo; Careglio, Davide; Fernández Palacios, Juan Pedro; Junyent Giralt, Gabriel (Optical Society of America, 2011-08-01)
    Article
    Open Access
    Network operators are facing the problem of dimensioning their networks for the expected huge IP traffic volumes while keeping constant or even reducing the connectivity prices. Therefore, new architectural solutions able ...
  • Translucent OBS network architectures with Dedicated and Shared wavelength resources 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE, 2011)
    Conference report
    Restricted access - publisher's policy
    The deployment of translucent optical networks is considered the most promising short term solution to decrease costs and energy consumption in optical backbone networks. Indeed, due to the technological maturity of ...