Browsing by Author "Comellas Colomé, Jaume"
Now showing items 1-20 of 87
-
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 feedback-based hybrid OBS/OCS architecture with fast-over-slow capability
(2011)
Conference lecture
Open AccessDynamic bandwidth allocation in response to the bandwidth requirements of new emerging applications is an essential demand for future optical networks. Hybrid switching architectures combining the benefits of different ... -
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 simple strategy to improve spectrum use in multi-rate flexgrid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyA simple overprovisioning Spectrum Assignment strategy for flexgrid networks is demonstrated as efficient in terms of network throughput at a given blocking probability. Gain is obtained despite allocated spectrum exceeds ... -
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 ... -
Allocating multi-rate requests to single-rate lightpaths in Flexgrid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policySome ideas about the effect of appropriately selecting the size of the connections conveyed by multi-rate flexgrid optical networks are discussed. The main focus is on illustrating the relation between spectrum consumption ... -
An analytical model for GMPLS control plane resilience quantification
(2009-12)
Article
Open AccessThis paper concentrates on the resilience of the Generalized Multi-Protocol Label Switching (GMPLS) enabled control plane. To this end, the problem of control plane resilience in GMPLS-controlled networks is firstly stated ... -
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 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 ... -
Analysis of traffic engineering information dissemination strategies in PCE-based multi-domain optical networks
(IEEE Computer Society Publications, 2010)
Conference report
Open AccessThis paper presents and compares different TE information dissemination strategies between Path Computation Elements (PCEs) in multi-domain optical networks. In such network context, recent studies have found that ... -
Burst contention avoidance schemes in hybrid GMPLS-enabled OBS/OCS optical networks
(IEEE Computer Society Publications, 2009-02)
Conference report
Open AccessHybrid optical network architectures, combining benefits of optical circuit and burst switching technologies, become a natural evolution to improve overall network performance while reducing related costs. This paper ... -
Correlation between traffic granularity and defragmentation periodicity in elastic optical networks
(Wiley-Blackwell, 2015-07-01)
Article
Open AccessWhile elastic optical network technologies have emerged as promising solutions for future ultra-high-speed optical transmission, the unavoidable spectral fragmentation problem that appears in such networks significantly ... -
Cost-effective ML-powered polarization-encoded quantum key distribution
(Institute of Electrical and Electronics Engineers (IEEE), 2022-07-01)
Article
Open AccessSecure communications have become a requirement for virtually all kind of applications. Currently, two distant parties can generate shared random secret keys by using public key cryptography. However, quantum computing ... -
Cross-connection management specialisation for WDM-OTN's
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Conference report
Open AccessWDM optical transport networks (WDM-OTN) will use new all-optical nodes that will perform functions in the optical domain, using wavelength as a new network resource. This paper presents a new approach for the optical ... -
DARIUS: a digital twin to improve the performance of quantum key distribution
(Institute of Electrical and Electronics Engineers (IEEE), 2024-03-01)
Article
Open AccessPolarization encoded Quantum Key Distribution (QKD) is attracting great attention as it generates unlimitedly and unconditionally secure keys for different use cases. Despite its theoretical excellence based on quantum ... -
Design and implementation of a GMPLS-controlled grooming-capable optical transport network
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-07)
Article
Open AccessAiming at better resource utilization, an important requirement of future optical transport networks is the capability to accommodate subwavelength client flows efficiently. This can be put into action thanks to the ... -
Designing a digital twin for quantum key distribution
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessClassical optical devices lack precision when they operate on single photons. We report a Quantum Digital Twin (QDT) to improve Quantum Key Distribution (QKD) implementations. We show a QDT increasing the Key Exchange Rate ... -
Dispersion-shifted fiber polarization scrambler based on faraday effect
(1999-07)
Article
Open AccessDemonstration of an all-fiber polarization scrambler based on the Faraday effect is carried out. The device has been constructed using dispersion-shifted fiber that has a major tolerance to bends than standard single-mode ... -
Distributed architecture supporting intelligent optical measurement aggregation and streaming event telemetry
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Conference report
Open AccessA distributed telemetry system integrating optical measurement and event data collection is demonstrated. Measurements of optical spectra from Nokia Bell Labs, of optical transponders from ADVA and SDN controller events ...
