Computer Network Telecommunication
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Especificação de uma ferramenta de previsão de demanda para equipamentos de infra-estrutura de telecomunicações
Over the past decades the telecommunication market hás been more and more deregulated and competitive, while more and more telecommunicatios techonologies are available for the users. Companies operating in these markets have to rely on demand forecasts to justify their level of investmants and ensure the capacity availability at the right time. With so man
Publicado em: 2008
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2. Data traffic dimensioning for 1xEV-DO cellular systems. / Dimensionamento de tráfego de rede de dados para sistema celular 1XEV-DO.
Research regarding voice and data dimensioning models applied to Telecommunication Networks. For circuit switched voice networks dimensioning, the Erlang formulas are used. When it comes to newer data networks, a packet based dimensioning is required, and the complexity is significantly increased due to the diversity of applications and its multiple features
Publicado em: 2006
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3. A multifractal traffic model with application in network traffic prediction proposal and evaluation / Um modelo multifractal aplicado a predição de trafego de redes-proposta e avaliação
Dynamic traffic control mechanisms can improve network resource utilization. The fractal traffic correlation structure can be exploited for designing dynamic network control mechanisms. Playing the most important role in the dynamic control mechanisms, traffic predictors can be accomplished from statistic traffic models able to describe the network traffic b
Publicado em: 2005
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4. Esquemas de proteção e conversão de comprimento de onda em redes opticas WDM / Protection schemes and wavelength conversion in WDM optical networks
This work examines the blocking reduction with the use of wavelength converters and some protection schemes in optical networks. Sub-Graph Routing Protection, a protection method that creates different failure-dependent protection paths for each connection is presented. Some schemes were proposed and compared, aiming at eliminating unnecessary connection rea
Publicado em: 2005
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5. 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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6. Abordagem evolutiva para o planejamento multi-periodo da expansão da rede de acesso aos serviços de telecomunicações
After privatization, the telecommunication area has been experienced big technological changes. From the user point of view, this means access to more modern services. For the service providers, the privatization means competition. The service providers need an optimized business plan to increase their market share, so that they can maximize their revenue an
Publicado em: 2005
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7. PLEX MPLS : analise, projeto e implementação de uma plataforma para experimentos com MPLS com suporte a QoS
Dados a banda de transmissão atualmente disponível, o protocolo (IP) utilizado para transmitir a maior parte de tráfego e a quantidade de tráfego e seus requisitos de aos, a Engenharia de Tráfego (TE, de Traffic Engineering) tomou-se um componente cada vez mais importante nas redes de comunicações. O padrão do IETF para enncaminhamento roteamento ent
Publicado em: 2005
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8. Uma estrategia de roteamento OSPF adaptativo baseado em estimação de banda / An adaptive OSPF routing strategy based on bandwidth estimation
Internet increase and diversity demand "smart" tools that could make possible to routing protocols self-adapt to network current state (its topology and congestion situation). Smart tools, although, can result in great processing and communication overload. This work presents, besides a new adaptive OSPF routing strategy based on bandwidth estimations, a sim
Publicado em: 2004
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9. Analysis of the application of TMN standards for the management of CRM systems. / Análise da aplicação dos padrões TMN no gerenciamento de sistemas de CRM.
Despite the fact that the information technology (IT) has been applied for business purposes since the sixties, they only became essential to business in the late eighties, when the technology started to play an essential role for corporations of any size. Therefore, the profile of the typical IT user in business has shifted from huge companies to mid-sized
Publicado em: 2003
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10. Planejamento da rede de transmissão em telecomunicações : o problema do enfeixamento
Telecommunications has experimented high growth rates, causing a rapid development of new technologies. In the transmission area, the SDH technology (Synchronous Digital Hierarchy) replaces the PDH technology (Plesyochronous Digital Hierarchy), offering several improvements in management, channels add-dropping on the main stream and network security. The SDH
Publicado em: 1997