Rwa Algorithms
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Comparing OSNR based policies for an adaptive-alternative IA-RWA algorithm applied to all-optical networks
We propose two policies to select the route for an adaptive-alternative routing algorithm for all-optical networks. We use the NrPSR to find the Nr routes with lower cost for a given source-destination pair according to a cost function expanded in a power series (PSR) in which the coefficients are determined by a Particle Swarm Optimizer (PSO). The selected
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-12
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2. Algoritmos RWA para redes ópticas transparentes considerando limitações da camada física / RWA algorithms for optical transparent networks considering physical impairments
With the proliferation of new multimedia services such as VoIP and IP-TV, an increasing demand for high rates of data transfer is being seen. Thus, the demand on the core of the network is continuously growing, so its capacity must increase in the same ratio to provide a reliable service to end users. The Transparent Optical Networks with WDM appears as a so
Publicado em: 2010
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3. Fast IRWA algorithms for all-optical networks / Algoritmos rÃpidos de IRWA para redes totalmente Ãpticas
Nesta dissertaÃÃo à estudado um importante tÃpico concernente Ãs redes totalmente Ãpticas: algoritmos de roteamento e atribuiÃÃo de comprimentos de onda (RWA). Nas redes totalmente Ãpticas, o sinal Ãptico nÃo à regenerado a cada nÃ. Por isso, à muito importante o desenvolvimento de algoritmos de RWA capazes de encontrar rotas levando em conside
Publicado em: 2008
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4. GMPLS networks dimensioning based RWA algorithms. / Dimensionamento de redes GMPLS com base em algoritmos RWA.
As redes atuais buscam a integração dos serviços e tendem ao IP/MPLS sobre DWDM. No futuro, espera-se que as redes sejam do tipo GMPLS, apresentando melhoria na flexibilidade, capacidade de comutação no meio óptico e também um plano de controle único. Tais redes poderão prover a integração de diferentes camadas e tecnologias, além de reduzirem os
Publicado em: 2006
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5. Architecture and implementation of a topological information and traffic engineering service to RWA systems / Arquitetura e implementação de um serviço de informações topologicas e de engenharia de trafego para sistemas RWA
GMPLS-controlled all-optical networks are the promise to handle the increasing volume of IP traffic. The GMPLS routing and signaling protocols, mainly OSPF and RSVP, work in such a way that the route calculation for optical circuits does not take into account the wavelength (label) availability. This is not optimal in terms of network resources usage and blo
Publicado em: 2006
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6. Performance analysis of IP traffic grooming over WDM networks with variable granularity flows. / Análise de desempenho da agregação de tráfego IP em redes WDM com variação da granularidade dos fluxos.
The present work covers the IP traffic grooming strategies in optical WDM networks. Using an entire wavelength to transport an individual traffic flow in a WDM network is inefficient. The problem known as traffic grooming consists in the multiplexing of different traffic flows in a single wavelength within a lightpath. The allocation of multiple traffic flow
Publicado em: 2006
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7. A methodology for provisioning and differentiation of optical QoS in FWN impaired transparent optical networks / Uma abordagem para aprovisionamento e diferenciação de QoS optico na presença de FWM em redes opticas transparentes
This Thesis proposes methodologies for differentiated optical QoS in a multi-client scenario, in which client networks (e.g. IP/MPLS and SDH) dynamically request lightpaths from a transparent optical network in which Four-Wave Mixing (FWM) imposes crosstalk among lightpaths. In order to meet Optical Service Level Agreement (OSLA), it is proposed an integrate
Publicado em: 2005
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8. Planejamento de redes WDM com proteção para caminhos opticos
This dissertation is a study about the initial traffic deployment in wavelength-routed WDM (Wavelength Division Multiplexing) optical networks with path protection. We make an introduction of the key technologies and the major network planning aspects. We introduce some architectures for transport provisioning to various client network architectures. The RWA
Publicado em: 2004
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9. ROTEAMENTO E ALOCAÇÃO DE COMPRIMENTO DE ONDA EM REDES ÓPTICAS / ROUTING AND WAVELENGTH ASSIGNMENT IN OPTICAL NETWORKS.
The communication industry was passing in lastest years by great transformations in world. Internet is the mainly responsable for that, because there is the necessity of a large band to data transmission. The optical networks concept and wavelength division multiplexing technology were arised in order to solve this problem. However, this created another prob
Publicado em: 2003