Browsing by Author "Cugini, Filippo"
Now showing items 1-20 of 29
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A service-oriented hybrid access network and clouds architecture
Velasco Esteban, Luis Domingo; Contreras, Luis Miguel; Ferraris, Giuseppe; Stavdas, Alexandros; Cugini, Filippo; Wiegand, Manfred; Fernández Palacios, Juan Pedro (2015-04-01)
Article
Open AccessMany telecom operators are deploying their own cloud infrastructure with the two-fold objective of providing cloud services to their customers and enabling network function virtualization. In this article we present an ... -
Active PCE demonstration performing elastic operations and hitless defragmentation in flexible grid optical networks
Paolucci, Francesco; Castro Casales, Alberto; Fresi, Francesco; Imran, Muhammad; Giorgetti, Alessio; Bhownik, Bishanka Brata; Berrettini, Gianluca; Meloni, Gianluca; Cugini, Filippo; Velasco Esteban, Luis Domingo; Poti, Luca; Castoldi, Piero (2015-02-01)
Article
Restricted access - publisher's policy -
An architecture to support autonomic slice networking
Velasco Esteban, Luis Domingo; Gifre Renom, Lluís; Izquierdo Zaragoza, José Luis; Paolucci, Francesco; Vela, Alba P.; Sgambelluri, Andrea; Ruiz Ramírez, Marc; Cugini, Filippo (2017-09-01)
Article
Open AccessIEEE Network slices combine resource virtualization with the isolation level required by future 5G applications. In addition, the use of monitoring and data analytics help to maintain the required network performance, while ... -
BER degradation detection and failure identification in elastic optical networks
Vela, Alba P.; Ruiz Ramírez, Marc; Fresi, Francesco; Sambo, Nicola; Cugini, Filippo; Meloni, Gianluca; Poti, Luca; Velasco Esteban, Luis Domingo; Castoldi, Piero (2017-08-30)
Article
Open AccessIEEE Optical connections support virtual links in MPLS-over-optical multilayer networks and therefore, errors in the optical layer impact on the quality of the services deployed on such networks. Monitoring the performance ... -
Combining a machine learning and optimization for early pre-FEC BER degradation to meet committed QoS
Pérez Vela, Alba; Ruiz Ramírez, Marc; Cugini, Filippo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyMonitoring the physical layer is key to detect bit error rate (BER) degradation caused by failures and to identify the cause of the failure and localize the failed elements. Once the failure has been detected, actions can ... -
Dedicated protection with signal overlap in elastic optical networks
Cugini, Filippo; Ruiz Ramírez, Marc; Foggi, Tommaso; Velasco Esteban, Luis Domingo; Sambo, Nicola; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-15)
Article
Restricted access - publisher's policyIn optical dedicated path protection (1 1), the same optical signal is transmitted along both working and backup paths. Thus, in 1 1, the transmission parameters need to be configured according to the most impaired path, ... -
Dynamic core VNT adaptability based on predictive metro-flow traffic models
Morales Alcaide, Fernando; Gifre Renom, Lluís; Paolucci, Francesco; Ruiz Ramírez, Marc; Cugini, Filippo; Castoldi, Piero; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017-12-01)
Article
Open AccessMPLS-over-optical virtual network topologies (VNTs) can be adapted to near-future traffic matrices based on predictive models that are estimated by applying data analytics on monitored origin-destination (OD) traffic. ... -
Early pre-FEC BER degradation detection to meet committed QoS
Pérez Vela, Alba; Ruiz Ramírez, Marc; Fresi, Francesco; Sambo, Nicola; Cugini, Filippo; Velasco Esteban, Luis Domingo; Castoldi, Piero (Optical Society of American (OSA), 2017)
Conference report
Restricted access - publisher's policyEarly optical layer BER degradation detection is proposed to trigger affected demands re-routing, targeting at reducing SLA violation. Results show that the proposed detection and re-routing algorithms noticeably reduce ... -
End-to-end intent-based networking
Velasco Esteban, Luis Domingo; Signorelli, Marco; González de Dios, Oscar; Papagianni, Chrysa; Bifulco, Roberto; Vegas Olmos, Juan J.; Pryor, Simon; Carrozzo, Gino; Schulz-Zander, Julius; Bennis, Mehdi; Martínez, Ricardo; Cugini, Filippo; Salvadori, Claudio; Lefebvre, Vincent; Valcarenghi, Luca; Ruiz Ramírez, Marc (2021-10)
Article
Open AccessTo reap its full benefits, 5G must evolve into a scalable decentralized architecture by exploiting intelligence ubiquitously and securely across different technologies, network layers, and segments. In this article, we ... -
Experimental assessment of ABNO-driven multicast connectivity in flexgrid networks
Gifre Renom, Lluís; Paolucci, Francesco; Gonzalez de Dios, Oscar; Velasco Esteban, Luis Domingo; Contreras, Luis Miguel; Cugini, Filippo; Castoldi, Piero; López Álvarez, Victor (2015-01-14)
Article
Open AccessThe increasing demand of internet services is pushing cloud services providers to increase the capacity of their data centers (DC) and create DC federations, where two or more cloud providers interconnect their infrastructures. ... -
Experimental assessment of in-operation spectrum defragmentation
Gifre Renom, Lluís; Paolucci, Francesco; Aguado, Alejandro; Casellas Regi, Ramón; Castro Casales, Alberto; Cugini, Filippo; Castoldi, Piero; Velasco Esteban, Luis Domingo; López Grimau, Víctor (2014-06-01)
Article
Restricted access - publisher's policyDynamic operation of flexgrid networks might cause optical spectrum to be divided into fragments, which makes it difficult finding contiguous spectrum of the required width for incoming connection requests, leading thus ... -
Experimental demonstration of an active stateful PCE performing elastic operations and hitless defragmentation
Castro Casales, Alberto; Paolucci, Francesco; Fresi, Francesco; Imran, Muhammad; Bhowmik, Bishanka; Berrettini, Gianluca; Meloni, Gianluca; Giorgetti, Alessio; Cugini, Filippo; Velasco Esteban, Luis Domingo; Poti, Luca; Castoldi, Piero (2013)
Conference report
Restricted access - publisher's policyAn experimental demonstration of active stateful PCE for flexgrid networks is presented. The PCE enables elastic operations on established connections and, when required, performs hitless defragmentation of spectrum ... -
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 policyThe 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 AccessTraffic 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 AccessThe 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 ... -
Fully disaggregated ROADM white box with NETCONF/YANG control, telemetry, and machine learning-based monitoring
Sgambelluri, Andrea; Izquierdo Zaragoza, José Luis; Giorgetti, Alessio; Gifre Renom, Lluís; Velasco Esteban, Luis Domingo; Paolucci, Francesco; Sambo, Nicola; Fresi, Francesco; Castoldi, Piero; Morro, Roberto; Riccardi, Emilio; D'Errico, Alessio; Cugini, Filippo (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyA first demonstration of ROADM White Box augmented with machine learning capabilities is demonstrated. The white box includes various level of disaggregation, NETCONF/YANG control, telemetry and spectrum-based advanced ... -
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 policySliceable 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 policyAn 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 ... -
On the benefits of elastic spectrum management in multi-hour filterless metro networks
Pedreno Manresa, J.J.; Izquierdo Zaragoza, José Luis; Cugini, Filippo; Pavón Mariño, Pablo (Institute of Electrical and Electronics Engineers (IEEE), 2018-06-28)
Conference report
Restricted access - publisher's policyThe dawn of 5G is pushing operators to deploy high-capacity, agile networks capable of adapting to time-varying traffic patterns, especially into metro sections. ROADMs are key enablers for agility in the optical layer, ... -
Optical signal tracking for robust PAM4 deployment in filterless metro network scenarios
Shariati, Mohammad Behnam; Fresi, Francesco; Ruiz Ramírez, Marc; Cugini, Filippo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessHighly accurate and reliable optical signal tracking is proposed that estimates sub-GHz laser drift failures by analyzing spectra acquired by cost-effective coarse-granular OSAs. Its application on PAM4 systems in filterless ...