Exploració per autor "Castro Casales, Alberto"
Ara es mostren els items 21-39 de 39
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Filter optimization in SDN-based flexgrid networks
(Optical Society of American (OSA), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe novel super-filter technique for flexgrid optical networks is proposed to compact spectrum-contiguous lightpaths. The technique is applied in a specifically extended SDN architecture, showing significant gains in terms ... -
Global concurrent optimization: advantages and opportunities in flexgrid-based networks
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn future flexgrid core networks the amount of lightpaths might increase significantly as a consequence of the finer granularity in the use of the optical spectrum. Different spectrum bandwidth can be allocated to each ... -
Impact of aggregation level on the performance of dynamic lightpath adaptation under time-varying traffic
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this article we focus on lightpath adaptation under time-varying traffic in a dynamic elastic optical network (EON) implementing flexgrid optical technology. In the considered scenario, a number of IP/MPLS metro area ... -
Insights on the Internet routing scalability issues
(2009-12-14)
Text en actes de congrés
Accés obertIn recent years, the size and dynamics of the global routing table have increased rapidly along with an increase in the number of edge networks. The relation between edge network quantity and routing table size/dynamics ... -
Managing Interdomain Traffic in Latin America: A New Perspective based on LISP
(2009-07)
Article
Accés obertThe characteristics of Latin American network infrastructures have global consequences, particularly in the area of interdomain traffic engineering. As an example, Latin America shows the largest de-aggregation factor ... -
Meeting the requirements to deploy cloud RAN over optical networks
(Optical Society of America, 2017-03-01)
Article
Accés obertRadio access network (RAN) cost savings are expected in future cloud RAN (C-RAN). In contrast to traditional distributed RAN architectures, in C-RAN, remote radio heads (RRHs) from different sites can share baseband ... -
Multipath restoration and bitrate squeezing in SDN-based elastic optical networks [Invited]
(2014-08-01)
Article
Accés restringit per política de l'editorialSliceable 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 the context ... -
Near real-time estimation of end-to-end performance in converged fixed-mobile networks
(Elsevier, 2020-01-15)
Article
Accés obertThe 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 ... -
On the benefits of differentiating the filter configurations in flexi-grid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialAn effective strategy exploiting differentiated filter configurations in flexi-grid optical networks is proposed and evaluated. Results show that 15% throughput improvements can be achieved with respect to traditional ... -
On the benefits of multi-path recovery in flexgrid optical networks
(2014-12-01)
Article
Accés restringit per política de l'editorialWe 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 ... -
On the performance of flexgrid-based optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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 ... -
On-demand incremental capacity planning in optical transport networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Article
Accés restringit per política de l'editorialIncremental planning is performed periodically to decide how a backbone optical network has to be updated to serve the forecast traffic during the next planning period. Based on reliable traffic prediction, new equipment ... -
Path-based recovery in flexgrid optical networks
(IEEE, 2012)
Text en actes de congrés
Accés restringit per política de l'editorialWith the advent of flexgrid optical networks, the rigid wavelength-division multiplexing (WDM) technology will be enhanced by providing better spectrum efficiency and flexibility. In those future flexible optical networks, ... -
Single-path provisioning with multi-path recovery in flexgrid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialThe new flexgrid technology, in opposition to the fixed grid one traditionally used in wavelength switched optical networks (WSON), allows allocating the spectral bandwidth needed to convey heterogeneous client demand ... -
Soft failure localization during commissioning testing and lightpath operation
(Institute of Electrical and Electronics Engineers (IEEE), 2017-11-09)
Article
Accés obertIn elastic optical networks (EONs), effective soft failure localization is of paramount importance to early detection of service level agreement violations while anticipating possible hard failure events. So far, failure ... -
Solving routing and spectrum allocation related optimization problems
(2013)
Comunicació de congrés
Accés obertWe provide a comprehensible introduction to RSA-related problems in flexgrid networks. Starting from its formulation, we analyze network live cycle and indicate different solving methods for the kind of problems that arise ... -
Superfilter technique in SDN-controlled elastic optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
Article
Accés restringit per política de l'editorialIn flexigrid elastic optical networks, filtering cascade effects strongly affect the overall transmission performance. To avoid these detrimental impairments, each lightpath is typically configured, in an independent way, ... -
The Minimum Coincidence Routing Approach in Wavelength-Routed Optical WDM Networks
(IEEE Computer Society Publications, 2009)
Text en actes de congrés
Accés obertManagement is a critical issue in optical networks. Highly impacting in management, routing in optical networks, is often decoupled into both the path selection and the wavelength assignment problems. In the former, ... -
Towards a carrier SDN: an example for elastic inter-datacenter connectivity
(2013)
Text en actes de congrés
Accés obertWe propose a network-driven transfer mode for cloud operations in a step towards a carrier SDN. Inter-datacenter connectivity is requested in terms of volume of data and completion time. The SDN controller translates and ...
