Now showing items 5-13 of 13

  • Filter optimization in SDN-based flexgrid networks 

    Paolucci, Francesco; Fresi, Francesco; Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Cugini, Filippo; Sambo, Nicola; Giorgetti, Alessio; Poti, Luca; Castoldi, Piero (Optical Society of American (OSA), 2014)
    Conference report
    Restricted access - publisher's policy
    The novel super-filter technique for flexgrid optical networks is proposed to compact spectrum-contiguous lightpaths. The technique is applied in a specifically extended SDN architecture, showing significant gains in terms ...
  • First experimental assessment of ABNO-driven in-operation flexgrid network re-optimization 

    Gifre Renom, Lluís; Paolucci, Francesco; Velasco Esteban, Luis Domingo; Aguado, Alejandro; Cugini, Filippo; Castoldi, Piero; López Álvarez, Victor (2015-02-01)
    Article
    Open Access
    Traffic affected by link failures can be recovered using path restoration schemes. In dynamically operated networks provided with a control plane, restoration algorithms run in a centralized element, such as the path ...
  • First experimental demonstration of ABNO-driven in-operation flexgrid network re-optimization 

    Velasco Esteban, Luis Domingo; Paolucci, Francesco; Gifre Renom, Lluís; Aguado, Alejandro; Cugini, Filippo; Castoldi, Piero; López, Víctor (The Optical Society (OSA), 2014)
    Conference report
    Open Access
    The after failure repair optimization problem is used to experimentally validate in-operation planning using the ABNO architecture to control a flexgrid optical network. A back-end PCE is used to solve this computational ...
  • ICT BONE views on the network of the future: the role of optical networking 

    Pattavina, Achille; Vlachos, Kyriakos; Petropoulos, Periklis; Callegati, Franco; Spadaro, Salvatore; Castoldi, Piero; Mitchell, John; Franzl, Gerald; Politi, Tanya; Tzanakaki, Anna; O'Mahony, Michael; Katrinis, Kostas; Van Daele, Peter; Pickavet, Mario; Simeonidou, Dimitra; Stavdas, Alexandros (2010)
    Conference report
    Open Access
    Part of the activities of the ICT EU Network of Excellence “Building the future Optical Network in Europe” (BONE) project is the development of the European Roadmap on Optical Networking in the context of the “Network ...
  • Impact of multi-wavelength sliceable transponders in elastic optical networks 

    Dallaglio, Mateo; Giorgetti, Alessio; Sambo, Nicola; Velasco Esteban, Luis Domingo; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    The utilization of sliceable bandwidth variable transponders based on multi-wavelength technology is evaluated in EONs. A routing and spectrum assignment scheme is proposed specifically designed to consider the constraints ...
  • Multipath restoration and bitrate squeezing in SDN-based elastic optical networks [Invited] 

    Paolucci, Francesco; Castro Casales, Alberto; Cugini, Filippo; Velasco Esteban, Luis Domingo; Castoldi, Piero (2014-08-01)
    Article
    Restricted access - publisher's policy
    Sliceable bandwidth-variable transponders (SBVTs) enable the adaptation of transmission parameters according to traffic requirements and network constraints. In this study, SBVTs capabilities are evaluated in the context ...
  • On the benefits of differentiating the filter configurations in flexi-grid optical networks 

    Castro Casales, Alberto; Cugini, Filippo; Velasco Esteban, Luis Domingo; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    An effective strategy exploiting differentiated filter configurations in flexi-grid optical networks is proposed and evaluated. Results show that 15% throughput improvements can be achieved with respect to traditional ...
  • Routing, spectrum, and transponder assignment in elastic optical networks 

    Dallaglio, Mateo; Giorgetti, Alessio; Sambo, Nicola; Velasco Esteban, Luis Domingo; Castoldi, Piero (2015)
    Article
    Open Access
    Backbone networks are evolving toward Elastic Optical Network (EON) architecture that allows a flexible and efficient use of spectrum resources. Flexibility in EONs is guaranteed also by emerging sliceable bandwidth variable ...
  • Superfilter technique in SDN-controlled elastic optical networks 

    Paolucci, Francesco; Cugini, Filippo; Fresi, Francesco; Meloni, Gianluca; Giorgetti, Alessio; Sambo, Nicola; Poti, Luca; Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
    Article
    Restricted access - publisher's policy
    In flexigrid elastic optical networks, filtering cascade effects strongly affect the overall transmission performance. To avoid these detrimental impairments, each lightpath is typically configured, in an independent way, ...