Artigos de Conferência, Publicação

Providing Quality of Service for Mesh Networks Using Link Delay Measurements

One of the main problems faced by ad hoc networks is providing specific quality of service guarantees for multimedia applications, mainly due to factors such as radio signal fading and node mobility. Since mesh networks are a special type of ad hoc network, they inherit these networks’ problems. This paper’s main goal is to present OLSR-MD, an extension to OLSR (Optimized Link State Routing), to provide quality of service based on link delay measurements. An evaluation of OLSR-MD in a mesh network to be deployed at the Federal University of Pará, by means of ns2 (version 2.30) simulations, showed that this protocol performed better than other OLSR-based alternatives studied in the simulations.

Artigos de Conferência, Publicação

Qualidade de Serviço Absoluta em Redes OBS baseadas no GMPLS

Este artigo apresenta uma proposta para oferecer Qualidade de Serviço (QoS) absoluta em redes OBS baseadas no plano de controle GMPLS. Nessa proposta, as técnicas de engenharia de tráfego do GMPLS são usadas para proporcionar QoS absoluta de maneira eficiente através da otimização do uso dos recursos da rede e procurando minimizar o desfavorecimento das classes de menor prioridade. Para validar a proposta são realizadas simulações utilizando a plataforma NS-2 (Network Simulator).