Results 11 to 20 of about 347 (102)

Finding an Objective Cost for Sliceable Flexgrid Transponders [PDF]

Optical Fiber Communication Conference, 2014
We analyze the objective cost of SBVTs as a function of the traffic conveyed by IP/MPLS-over-flexgrid networks. Optimal results show that cost increment with respect to BVTs is related to the aggregation level.
Velasco Esteban, Luis Domingo, González de Dios, Óscar, López, Víctor, Fernández Palacios, Juan Pedro, Junyent Giralt, Gabriel   +4 more
openaire   +3 more sources

Flexgrid Technologies Enabling BRAS Centralization in MANs [PDF]

Journal of Optical Communications and Networking, 2016
In an evolutionary metro-regional area network (MAN) scenario, targeting the centralization of the broadband remote access server (BRAS), flexgrid technologies can be suitably tailored to be applied. We investigate their applicability, proposing network architecture and data plane solutions to improve the spectrum and network efficiency, while reducing
Michela Svaluto Moreolo, Josep M. Fabrega, Laura Martín Gonzalez, Kostas Christodoulopoulos, Emmanouel A. Varvarigos, Juan Pedro Fernández-Palacios   +5 more
openaire   +3 more sources

Designing National IP/MPLS Networks with Flexgrid Optical Technology [PDF]

European Conference and Exhibition on Optical Communication, 2012
We propose a two-step procedure to design flexgrid-based national networks. Locations are first partitioned into a set of metro areas interconnected through a flexgrid optical network. The problem is modeled as a Mixed Integer Linear Programming (ILP). Next, each network is designed separately.
Velasco Esteban, Luis Domingo, Wright, Paul, Lord, Andrew, Junyent Giralt, Gabriel   +3 more
core   +5 more sources

Filter Optimization in SDN-based Flexgrid Networks

Optical Fiber Communication Conference, 2014
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 of spectral efficiency.
Francesco Paolucci, Francesco Fresi, Alberto Castro, Luis Velasco 0001, Filippo Cugini, Nicola Sambo, Alessio Giorgetti, Luca Potì, Piero Castoldi   +8 more
openaire   +5 more sources

Path-based recovery in flexgrid optical networks [PDF]

2012 14th International Conference on Transparent Optical Networks (ICTON), 2012
Peer ...
Castro Casales, Alberto, Ruiz Ramírez, Marc, Velasco Esteban, Luis Domingo, Junyent Giralt, Gabriel, Comellas Colomé, Jaume   +4 more
openaire   +3 more sources

The network capacity benefits of Flexgrid

, 2013
Wavelength Division Multiplexing (WDM) networks of the future are likely to use Flexgrid, providing operators with additional flexibility when assigning spectrum compared to traditional WDM networks using the 50GHz ITU grid. Flexgrid breaks the spectrum up into small (typically 12.5GHz) slots, but its key feature is that contiguous slots can be ...
Wright, Paul, Lord, Andrew, Velasco Esteban, Luis Domingo   +2 more
core   +4 more sources

Benefits of Active Stateful PCE for Flexgrid Networks

Optical Fiber Communication Conference, 2014
Relevant benefits of the active stateful PCE architecture are experimentally demonstrated on a flexgrid network testbed. Two experiments are reported, including a first demo on PCE-controlled code-adaptation applied to a 1Tb/s super-channel.
Filippo Cugini, Francesco Paolucci, Francesco Fresi, Gianluca Meloni, Gianluca Berrettini, Nicola Sambo, Alessio Giorgetti, Tommaso Foggi, Luca Potì, Piero Castoldi   +9 more
openaire   +4 more sources

Optimization models for flexgrid elastic optical networks [PDF]

2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
In the paper we present integer programming (IP) optimization models for flexgrid elastic optical networks (EON). We consider several different basic assumptions regarding flexibility of EON that lead to a variety of IP formulations differing in precision and complexity.
Zotkiewicz, Mateusz, Pioro, Michal, Ruiz Ramírez, Marc, Klinkowski, Miroslaw, Velasco Esteban, Luis Domingo   +4 more
core   +4 more sources

Elastic spectrum allocation in flexgrid optical networks [PDF]

, 2012
[CASTELLÀ] En este trabajo se presenta el estudio y los resultados obtenidos al aplicar elasticidad en redes ópticas flexibles con tecnología flexgrid. El objetivo de este trabajo es evaluar una futura vía de trabajo que ayude a resolver el problema del enrutamiento y la asignación de espectro en redes ópticas de próxima generación.
Asensio Garcia, Adrián
core   +3 more sources

Global concurrent optimization: Advantages and opportunities in flexgrid-based networks

2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
In future flexgrid core networks the amount of lightpaths might increase significantly as a consequence of the finer granularity in the use of the optical spectrum. Different spectrum bandwidth can be allocated to each lightpath as a function of, among others, the bitrate amount to be conveyed and the modulation format used.
Castro Casales, Alberto, Velasco Esteban, Luis Domingo, Comellas Colomé, Jaume, Junyent Giralt, Gabriel   +3 more
openaire   +3 more sources