Management Of Optical Networks
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Controle dos efeitos da mistura de quatro ondas (FWM) para melhoria no gerenciamento do QoS óptico em redes GMPLS/DWDM. / Control of the four wave mixing (FWM) effects for improvement in the optical QOS management in GMPLS /DWDM networks.
This work investigates the effects of the Four-Wave Mixing (FWM) during the lightpaths establishment in a GMPLS/DWDM (Generalized Multiprotocol Label Switching / Dense Wavelength Division Multiplexing) network. In order to minimize their impacts and thus reduce network blocking, strategies based on RSVP-TE (Resource Reservation Protocol- Traffic Engineering)
Publicado em: 2011
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2. Nodes architecture and traffic engineering in optical networks / Arquitetura de nós e engenharia de tráfego em redes ópticas
Integrating telecommunication networks has enlarged the coverage, but has made operations more complex, mainly because of the architecture, formed by various layers. These layers deal with different protocols and transmission rates, as well as electrical and optical signals. The usual alternative of expanding the resources proportionally to the demand is imp
Publicado em: 2009
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3. Contribuições para a análise e simulação de redes ópticas: aspectos de Engenharia de Tráfego, restauração dinâmica e conversão de comprimentos de onda / Contributions for the analysis and simulation of optical networks: aspects of traffic engineering, dynamic restoration and conversion of wavelenghts
The Wavelength Division Multiplexing (WDM) technology as well as both the introduction of all optical OXCs (Optical Cross Connect) and OADMs (Optical Add/Drop Multiplexer) may provide the optical network with the networking function, i.e, the capacity to manipulate wavelengths in order to implement their routing. This possibility implies a new type of relati
Publicado em: 2009
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4. Análise mercadológica para a implementação da tecnologia FTTH: uma aplicação do método SWOT / Marketing analysis for FTTH technology implementation: an application of SWOT method
The fiber optics is a transmission system that has been used to enable products that need high bandwidth, such as the telephone system, videoconferencing, local area networks (LANs), downloads of large files etc. In Brazil, we found an increased number of fiber optic networks. This ratify its advantages in relation to metal wire cable (immunity to electromag
Publicado em: 2009
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5. Uma alternativa a inundação baseada em tabelas de dispersão para planos de controle de redes opticas / A hash table based flooding alternative for optical networks control plane
The transport layer structure of the Internet is moving towards a model of highspeed routers interconnected by intelligent optical core networks. A consensus has been reached on wavelength division multiplexing (WDM) as the way to increase the transmission capacity. However there are few proposals for distributed control planes under dynamic Quality of Servi
Publicado em: 2008
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6. Desenvolvimento de gerência SNMP para dispositivos de redes totalmente ópticas. / Development of SNMP management for all network optical devices.
Optical wavelength converters (OWC) are devices that can reduce congestion and improve the efficiency of the next generation of wavelength division multiplexing (WDM) optical networks. Currently, our research group is developing a prototype of this converter in the Kyatera Project funded by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP). I
Publicado em: 2007
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7. A policy-based architecture for fault management in optical networks / Uma arquitetura baseada em politicas para gerencia de falhas em redes opticas
In these last few years, optical networking technology has been considered as a solution for bottlenecks found in today s networks. Each optical fiber is capable to have from ten to hundreds of optical channels that operate at rates from 51 Mb/s to ten of terabits per second. These channels are important elements in the composition of lightpaths, the default
Publicado em: 2006
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8. Layer 1 virtual private network management / Gerencia de redes virtuais privadas de camada 1
A distributed control plane architecture as GMPLS enhances transport networks with dynamic connection control. As a result, it allows the provisioning of advanced connectivity services, like Virtual Private Networks (VPNs), on layer 1 switching networks as optical and TDM networks. Such Layer 1 VPN (L1VPN) services enable multiple customer networks to share
Publicado em: 2006
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9. Análise lógica de protocolos, proposta e avaliação de desempenho de um algoritmo de atribuição de rótulo baseado em SRLG em um ambiente GMPLS-WDM. / Protocol logical analysis, proposal and performance evaluation of a label assignment algorithm based on SRLG in a GMPLS-WDM environment.
To satisfy the explosive increasing demands of voice and data traffic, optical networks based on WDM and GMPLS are being developed. The GMPLS´ suite of protocols is currently being considered as the control plane for optical networks and it is compounded of signaling and routing protocols, and also the link management protocol (LMP). The LMP is an important
Publicado em: 2006
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10. Web services-based provisioning of connections in GMPLS optical networks / Provisionamento baseado em web services de conexões fim-a-fim em redes opticas GMPLS
Para o provisionamento de conexões fim-a-fim em domínios ópticos é desejável uma solução de arquitetura que permita o estabelecimento automático destas conexões: A tecnologia GMPLS oferece um plano de controle que especifica mecanismos que estendem o roteamento e a sinalização do mundo IP contribuindo para a configuração automática de conexõ
Publicado em: 2006
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11. SMART WAVELENGTH ROUTING ASSIGNMENT ON WDM NETWORKS BY FUNCTIONALITY ON PHYSICAL LAYER / ROTEAMENTO INTELIGENTE EM REDES WDM POR FUNCIONALIDADE NA CAMADA FÍSICA / RUTEAMIENTO INTELIGENTE EN REDES WDM POR FUNCIONALIDAD EN LA CAPA FÍSICA
In conventional optical networks, optoelectronic conversions are needed in each node for the sake of a proper packet routing. Simultaneously, intensive managing resources should be allocated to accomplish the routing task. The correct introduction of intelligence and functionality within the network physical layer may lead to some advantages over conventiona
Publicado em: 2001
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12. PROTECTION E RESTORATION, TOGETHER WITH NODE ADDRESSING AND TMN MANAGEMENT FOR IP OVER DWDM OPTICAL NETWORKS BY USING PHYSICAL LAYER / PROTEÇÃO, RESTAURAÇÃO, ENDEREÇAMENTO E GERENCIAMENTO TMN NA CAMADA FÍSICA PARA APLICAÇÕES IP SOBRE DWDM
The objective of this work is to explore the possibilities of built-in intelligence embedded in the physical layer of an Optical Telecommunications Network, aiming at its future applications. The use of RF subcarriers - introduce above the optical payload through Mach-Zehnder modulators -, associated with multiple acess technologies, allows for protection, r
Publicado em: 2000