End To End Qos
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Green-Markov models - new optimization strategies: a case study for user allocation in co-channel macro/femto networks
The femtocell concept aims to combine fixed-line broadband access with mobile telephony using the deployment of low-cost, low-power third and fourth generation base stations in the subscribers' homes. While the self-configuration of femtocells is a plus, it can limit the quality of service (QoS) for the users and reduce the efficiency of the network, based o
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2012-12
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2. Uma arquitetura de controle de qualidade de serviço aplicada a redes heterogêneas e serviços convergentes. / An architecture for QoS control applied to heterogeneous networks and convergent services.
One of the targets of the next generation communication systems is to provide access to any service, to any user, anytime, anywhere, regardless the access network technology or type of user device (mobile phone, PDA, personal computer, and so on). This scenario is called convergence of services by heterogeneous networks, and in such scenario quality of servi
Publicado em: 2010
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3. Ferramenta para mapear a qualidade percebida pelo usuário em requisitos de QoS em ambiente convergente e heterogêneo. / User perceived quality into convergent and heterogeneous environment QoS requirements mapping tool.
Uma das principais características dos sistemas de informação e de comunicação é permitir que os usuários finais utilizem e disponibilizem serviços interativos com conteúdo multimídia a qualquer hora, em qualquer lugar, com qualquer dispositivo e em movimento, independentemente da tecnologia de rede utilizada. Um desafio que surge face a essa nova
Publicado em: 2010
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4. Uma arquitetura de Gateway com QoS para gerenciamento de tráfego de rede considerando restrições temporais das aplicações
Applications with time restrictions are becoming common in our daily lives. These applications range from games to applications for controlling air traffic. Applications with time restrictions that use the Internet / Intranet as a mean of communication (e.g. streaming audio and video, VoIP and messaging PRC-RT), require that their packets be delivered before
Publicado em: 2009
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5. MODEL-DRIVEN RESOURCE MANAGEMENT: ADAPTABILITY AND INTEROPERABILITY ON END-TO-END QOS SUPPORT / GERENCIAMENTO DE RECURSOS DIRIGIDO POR MODELOS: ADAPTABILIDADE E INTEROPERABILIDADE NO SUPORTE A QOS FIM-A-FIM
The evolution of codification techniques for continuous media is making distributed multimedia applications even more popular. This kind of application has performance requirements that must be met in an end-to-end fashion, which can be achieved only if quality-of-service (QoS) provisioning mechanisms are applied on each participant subsystem. These mechanis
Publicado em: 2008
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6. Method for eliciting the quality of service parameters for interactive and mobile services. / Método para identificação de parâmetros de qualidade de serviços aplicados a serviços móveis e interativos.
In these days the final users wish to obtain, to furnish and to interact using interactive services with multimedia content anywhere, anytime and with any kind of user device. One of the biggest challenges is to assure the End-to End Quality of Service (E2E QoS) in the delivering of the interactive and multimedia services for moving users. In general, this k
Publicado em: 2007
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7. Proposta de arquitetura de medição e estimativa de tráfego em redes DIFFSERV
This work presents a framework for estimating the delay in networks that implements the Differentiated Services QoS methodology. The work considers the use of the Policy Based Network Management (PBNM) model to perform the collection of data from the core and border routers in a DiffServ domain. The architecture is based on the IETF (Internet Engineering Tas
Publicado em: 2006
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8. Proposta de um mecanismo para alocaÃÃo otimizada de recursos em domÃnios Diffserv
Although the Bandwidth Broker has been proposed with the objective to give more intelligence to DiffServ networks, allowing the allocation of resources in a dynamic way for applications, once the resources are granted they remain statically allocated along the requested period. In this article, we propose an enhanced resource allocation mechanism, based on t
Publicado em: 2006
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9. cellular networks; Mobile networks / Controle de admissÃo de chamas e reserva de recursos em redes mÃveis celulares
Handoff in wireless/mobile networks is the mechanism that transfers an ongoing call from the current cell as the mobile station moves through the coverage area of the system. User applications may experience performance degradation due to handoffs from user mobility. If the target cell does not have sufficient available bandwidth, the call will be dropped. F
Publicado em: 2004
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10. Self-similar LAN/WAN traffic issues on high-speed QoS networks.
During the last decade, the enormous commercial explosion of the Internet has brought up the exhaustive use of Public Telephone Switched Network (PTSN) communication lines by computers (end-users) from all over the world. As a direct consequence of this explosion, a brand new research field, inside the context of the so-called Queuing Theory, has emerged. In
Publicado em: 2004
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11. UM FRAMEWORK PARA PROVISÃO DE QOS EM REDES MÓVEIS SEM FIO / A FRAMEWORK FOR QOS PROVISIONING IN WIRELESS MOBILE NETWORKS
In the last decades, increasing interest has been observed in technologies related to wireless mobile communication environments. Great part of such interest follows the growth in the telecommunications industry, more specifically of cellular mobile telephony systems. Users are quickly absorbing these technologies and generating new necessities, such as the
Publicado em: 2002
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12. DEVELOPMENT OF A SIMULATION TOOL FOR CELLULAR NETWORK PLANNING AND PERFORMANCE EVALUATION BASED ON THE SIGNALING LOAD / DESENVOLVIMENTO DE UMA FERRAMENTA DESIMULAÇÃO PARA PLANEJAMENTO E ANÁLISE DO DESEMPENHO DE REDES CELULARES A PARTIR DA CARGA DE SINALIZAÇÃO GERADA
The advent of second and third generation cellular systems make cellular operators face dramatic increase in the signaling traffic over the fixed part of the mobile network. In spite of this, rare mobile communications service providers are able to forecast the above mention increase and quantify it with reasonable precision. This work describes the developm
Publicado em: 2002