Results 1 to 10 of about 261 (83)
Optimized traffic profile for FlexGrid optical networks [PDF]
Photonic Network Communications, 2017 This work is focused on studying the connections’ bandwidth distribution effects on the FlexGrid network performance. An accurate study of spectrum occupancy in heavy loaded FlexGrid optical networks is carried out. This analysis is useful to figure out which traffic profiles are more suitable for this kind of networks.
Jaume Comellas, Comellas Jaume
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Path-based recovery in flexgrid optical networks [PDF]
2012 14th International Conference on Transparent Optical Networks (ICTON), 2012 Peer ...
A Castro, Marc Ruiz, Luis Velasco
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On the performance of flexgrid-based optical networks [PDF]
2012 14th International Conference on Transparent Optical Networks (ICTON), 2012 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 of large-size, expensive and power-consuming IP/MPLS layers to perform the required grooming/aggregation functionality.
Luis Velasco, Marc Ruiz, A Castro
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Modeling the routing and spectrum allocation problem for flexgrid optical networks
Photonic Network Communications, 2012 Flexgrid optical networks are attracting huge interest due to their higher spectrum efficiency and flexibility in comparison with traditional wavelength switched optical networks based on the wavelength division multiplexing technology. To properly analyze, design, plan, and operate flexible and elastic networks, efficient methods are required for
Luis Velasco +2 more
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Column generation algorithm for RSA problems in flexgrid optical networks
Photonic Network Communications, 2013 Finding optimal routes and spectrum allocation in flexgrid optical networks, known as the RSA problem, is an important design problem in transport communication networks. The problem is TeX -hard, and its intractability becomes profound when network instances with several tens of nodes and several hundreds of demands are to be solved to optimum.
Marc Ruiz +2 more
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Mapping time-varying IP traffic to flexible optical paths in flexgrid optical networks [PDF]
Photonic Network Communications, 2014 A spectrum slot is the frequency range allocated to a single channel within a flexible grid, and its width needs to be an integer multiple of the so-called slot width granularity. The slot width of the spectrum slots to be used for an optical path in flexgrid optical networks can be adjusted in time to align with time-varying client traffic demand for ...
Caglar Tunc, Nail Akar, Akar Nail
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On the legacy amplifier limitation in flexgrid optical networks [PDF]
2015 International Conference on Photonics in Switching (PS), 2015 Flexgrid technology is an interesting solution to improve network capacity. However, for a given spectral band, it gives rise to the increase of the number of channels, requiring more amplification power in respect with the conventional fixed grid technology.
Djamel Amar +2 more
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On the benefits of multi-path recovery in flexgrid optical networks
Photonic Network Communications, 2014 We propose a new recovery scheme, called multi-path recovery (MPR), specifically designed for flexgrid-based optical networks. It combines protection and restoration schemes to jointly recover, in part or totally, the bitrate requested by client demands in case of failure.
A Castro +2 more
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Modulation format-aware restoration and re-optimization in Flexgrid optical networks
2016 18th International Conference on Transparent Optical Networks (ICTON), 2016 Peer ...
Lluís Gifre, Marc Ruiz, Luis Velasco
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Partial-Failure Segregated Spectrum Assignment for Multicast Traffic in Flex-Grid Optical Networks
Photonics, 2022 In this paper, we propose a new algorithm called the partial-failure segregated multicasting routing and spectrum assignment (PFS MRSA) algorithm to improve the service blocking performance of the multicast transmission in flex-grid optical networks ...
Yang Qiu
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