Browsing by Author "Ruiz Ramírez, Marc"
Now showing items 1-20 of 148
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A column generation approach for large-scale RSA-based network planning
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyIn flexgrid-based optical networks, the problem of finding optimal route and spectrum allocation (RSA) for the demands in a traffic matrix becomes harder to solve than similar problems in fixed DWDM networks, mainly due ... -
A GRASP with path-relinking heuristic for the survivable IP/MPLS-over-WSON multi-layer network optimization problem
(2013-12)
Article
Restricted access - publisher's policyIn this paper we deal with the survivable internet protocol (IP)/multi-protocol label switching (MPLS)-over-wavelength switched optical network (WSON) multi-layer network optimization problem (SIMNO). This problem entails ... -
A GRASP-based heuristic to design the GMPLS control plane network topology with resilience guarantees
(IEEE Press. Institute of Electrical and Electronics Engineers, 2008)
Conference report
Restricted access - publisher's policyThe control plane topology has traditionally followed that of the data plane and therefore the design of the former, as well as its resilience, has been addressed in the latter's one. Owing to the fact that a clear separation ... -
A traffic intensity model for flexgrid optical network planning under dynamic traffic operation
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyWe obtain a model to estimate the highest traffic intensity that a flexgrid-based network can support in dynamic scenarios. A design problem is introduced to illustrate its application. Numerical results validate both ... -
Accurate low complex modulation format and symbol rate identification for autonomous lightpath operation
(2022-11-28)
Article
Open AccessNetwork automation promises to reduce costs while guaranteeing the required performance; this is paramount when dealing with the forecasted highly dynamic traffic that will be generated by new 5G/6G applications. In optical ... -
Adaptation of the residual signal for filter failure detection in scenarios with multiple filter types
(2019)
Conference report
Open AccessTo monitor the optical spectra of outgoing links, Optical Spectrum Analyzers (OSA) can deployed in the optical nodes acquiring the optical spectra of outgoing links and analyzing optical signals to detect ... -
Adapting the virtual network topology to near future traffic
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyThe introduction of new services requiring large and dynamic bitrate connectivity can cause changes in the direction of the traffic in metro and even core network segments along the day. This leads to large overprovisioning ... -
After failure repair optimization in dynamic flexgrid optical networks
(The Optical Society (OSA), 2014)
Conference report
Restricted access - publisher's policyWe introduce the problem of reoptimizing the network after a link failure has been repaired as an effective way for reducing capacity usage and improving network performance. Numerical results show gains higher than 42%. -
An architecture to support autonomic slice networking
(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 ... -
An autoencoder-based solution for IQ constellation analysis
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Open AccessA method for IQ constellation analysis based on Autoencoders is proposed. Exhaustive numerical results show accurate physical metric prediction and large data compression, while providing useful model explainability. -
An experimental GMPLS-controlled network test-bed enabling sub-wavelength connection provisioning
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-06-28)
Conference report
Open AccessThe efficient accommodation of sub-wavelength client flows on optical channels is a current challenge for resources use optimization in GMPLS controlled optical networks. While optical channels capacity usually exceeds 10 ... -
An in-operation planning tool architecture for flexgrid network re-optimization
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyIn-operation network planning consists in re-optimizing a network, currently being operated to transport traffic, either minimizing resource utilization or maximizing the transported traffic. In the context of flexgrid ... -
Applying data visualization for failure localization
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyData visualization is applied to BER measures in a bigdata repository. Bubble charts are produced to identify lightpaths with increasing BER and spectrum color maps are then used to identify the most likely degraded link -
Autonomic content delivery network service
(2019)
Conference report
Open AccessWe focus on a use case where a virtualized Content Delivery Network (CDN) service autonomously adapts to the load by requesting the instantiation of new VMs in selected leaf cache nodes, as well as by ... -
Autonomic disaggregated multilayer networking
(Institute of Electrical and Electronics Engineers (IEEE), 2018-05-01)
Article
Open AccessFocused on reducing capital expenditures by opening the data plane to multiple vendors without impacting performance, node disaggregation is attracting the interest of network operators. Although the software-defined ... -
Autonomic NFV network services on top of disaggregated optical metro networks
(2019)
Conference report
Restricted access - publisher's policyControl and orchestration of metro network to support dynamic provisioning and reconfiguration of services based on Virtual Network Functions are demonstrated through a CDN example. Interaction among CASTOR MDA, OSM and ... -
Autonomic transmission through pre-FEC BER degradation prediction based on SOP monitoring
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyAn Autonomic Transmission Agent based on machine-learning is proposed for excessive bit-error-rate prediction resulting from real-time analysis of state-of-polarization (SOP). The accuracy and speed of the agent enables ... -
Autonomous and energy efficient lightpath operation based on digital subcarrier multiplexing
(2021-09)
Article
Open AccessThe massive deployment of 5G and beyond will require high capacity and low latency connectivity services, so network operators will have either to overprovision capacity in their transport networks or to upgrade the optical ... -
Autonomous operations in optical networks
(2019)
Conference report
Open AccessMachine Learning (ML) has already proven its benefits for network operation, being a sub-domain of artificial intelligence, it is highly suitable for complex system representation. In this paper, ... -
BER degradation detection and failure identification in elastic optical networks
(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 ...
