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Article
Enhanced domain disjoint backward recursive TE path computation for PCE-based multi-domain networks
The ability of computing optimal routes poses new challenges when extending it to larger multi-domain network scenarios, as the quality of these computed end-to-end inter-domain routes depends on the selection...
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Article
Value optimization of survivable multilayer IP/MPLS-over-WSON networks
Network operators are willing to provide a range of services in the hope of maximizing their profits: from the highly available connectivity services for key business customers to the unprotected or even best ...
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Article
Column generation algorithm for RSA problems in flexgrid optical networks
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
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Article
Experimental assessment of in-operation spectrum defragmentation
Dynamic 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, le...
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Article
Multipath restoration and bitrate squeezing in SDN-based elastic optical networks [Invited]
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 ...
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Article
On the benefits of multi-path recovery in flexgrid optical networks
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 tota...
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Article
Active PCE demonstration performing elastic operations and hitless defragmentation in flexible grid optical networks
Control and data plane innovations are driving the evolution of flexible grid optical networks enabling more granular reservation of spectrum portion. On the one hand, the path computation element (PCE) is evo...
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Article
Orchestrating connectivity services to support elastic operations in datacenter federations
Datacenter federations are able to manage appropriately the green energy resources available in each datacenter (DC) thanks to their geographically distributed infrastructure, thus reducing energy expenditure....
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Article
A control and management architecture supporting autonomic NFV services
The proposed control, orchestration and management (COM) architecture is presented from a high-level point of view; it enables the dynamic provisioning of services such as network data connectivity or generic ...
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Article
Real-time optical spectrum monitoring in filterless optical metro networks
Filterless optical networks (FONs) have been proposed as a feasible solution for optical metro networks. In addition, as a result of the shorter distance compared to core optical networks, direct detection opt...
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Article
Predictive autonomic transmission for low-cost low-margin metro optical networks
Low-cost low-margin implementation plays an essential role in upgrading optical metro networks required for future 5G ecosystem. In this regard, low-resolution analog-to-digital converters can be used in coher...