Browsing by Author "Castro Casales, Alberto"
Now showing items 1-20 of 39
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Active PCE demonstration performing elastic operations and hitless defragmentation in flexible grid optical networks
(2015-02-01)
Article
Restricted access - publisher's policy -
Advantages of a PCE-based control plane for LISP
(ACM Press. Association for Computing Machinery, 2008)
Conference lecture
Open AccessThe Locator/Identifier Separation Protocol (LISP) is one of the candidate solutions to address the scalability issues in inter-domain routing. The current proposals for its control plane (e.g., ALT, CONS, NERD) have various ... -
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 elastic networks OMNeT++-based simulator
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyAn increasing number of studies about flexgrid-based elastic optical networks are currently being carried out by industry as well as academic research teams. As access to real test-beds is limited, there is a lack of ... -
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 ... -
Brokered orchestration for end-to-end service provisioning across heterogeneous multi-operator (Multi-AS) optical networks
(2016-12-01)
Article
Open AccessThis paper proposes a new networking paradigm introducing the broker-plane above the management planes of Autonomous Systems (ASes). The brokers communicate with the manager of each AS to assist coordinate end-to-end ... -
CAPEX study for grid dependent multi-layer IP/MPLS-over-EON using relative BV-WSS costs
(2012)
Conference report
Open AccessThe impact of the frequency grid on the CAPEX required to deploy a multi-layer IP/MPLS-over-EON is analyzed. Results showing significant savings at the electronic layer motivate the introduction of narrower grids with ... -
Coordination of radio access and optical transport
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Conference report
Open AccessNew 5G and beyond applications demand strict delay requirements. In this paper, we propose coordination between radio access and optical transport to guarantee such delay while optimizing optical capacity allocation. ... -
Cross-stratum orchestration and flexgrid optical networks for datacenter federations
(2013-11)
Article
Restricted access - publisher's policyCurrent inter-data-center connections are configured as static big fat pipes, which entails large bit rate over-provisioning and thus high operational costs for DC operators. On the other hand, network operators cannot ... -
Dynamic restoration in multi-layer IP/MPLS-over-flexgrid networks
(2013)
Conference report
Restricted access - publisher's policyThe recent advances in photonic technology will allow deploying flexgrid-based optical core networks in the near future. Although that technology favors more efficient spectrum utilization, multilayer IP/MPLS-over-flexgrid ... -
End-to-end KPI analysis in converged fixed-mobile networks
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Open AccessThe independent operation of mobile and fixed network segments is one of the main barriers that prevents improving network performance while reducing capital expenditures coming from overprovisioning. In particular, a ... -
Experimental assessment of bulk path restoration in multi-layer networks using PCE-based global concurrent optimization
(2014-01-01)
Article
Restricted access - publisher's policyGeneralized multi-protocol label switching-based multi-layer networks (MLN) combining packet and optical switching lead to jointly leverage intrinsic per-layer benefits such as statistical multiplexing and huge transport ... -
Experimental assessment of degradation - triggered reconfiguration in optically interconnected cloud - RAN
(Optical Society of American (OSA), 2017)
Conference report
Restricted access - publisher's policyC-RAN control architecture is proposed and experimentally assessed. A local controller in each location receives latency, jitter, and BER monitoring data from local BBUs and detects a CPRI degradation, which triggers a ... -
Experimental assessment of in-operation spectrum defragmentation
(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
(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 ... -
Experimental demonstration of brokered orchestration for end-to-end service provisioning and interoperability across heterogeneous multi-operator (multi-AS) optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference report
Open AccessA broker on top of opaquely-managed optical domains advertising their capabilities is proposed to provision multi-AS connections in multi-operator scenarios. In case of no spectrum continuity, intra-domain spectral ... -
Experimental demonstration of cognitive provisioning and alien wavelength monitoring in multi-domain EON
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Open AccessThis paper proposes a cognitive multi-domain EON architecture with machine-learning aided RMSA and alien wavelength monitoring. Testbed experiments show modulation format recognition, QoT monitoring and cognitive routing ... -
Experimental demonstration of heterogeneous cross stratum broker for scientific applications
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyWe propose and demonstrate cross-stratum Broker orchestration for scientific applications and heterogeneous resources reservation in DCs, HPC facilities and networks belonging to different operators. Experiments were ... -
Experimental evaluation of a dynamic PCE-based regenerator-efficient IA-RWA algorithm in translucent WSON
(2012)
Conference report
Open AccessWe devise a novel dynamic PCE-based impairment-aware RWA algorithm in translucent GMPLS WSON that minimizes regenerator usage. Experimental evaluation carried out on the Open GMPLS/PCE control plane of CTTC ADRENALINE ... -
Extending the flexgrid optical core towards the edges
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyNational IP/MPLS network have being designed on top of fixed-grid DWDM optical networks so to spread out covering large areas. Besides, multilayer IP/MPLS-over-DWDM networks take advantage from grooming to achieve high ...
