Benefícios do padrão IEEE 802.11e para tráfego de tempo real em redes WLAN não estruturadas. / Benefits of IEEE 802.11e Standard for real-time traffic in WLAN ad hoc networks.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The use of wirelles networks in most various sectors has been growing drastically in past years Allied to the wireless networks use, the diversification of applications and services provided can be directly verified whether by home or corporate users. This alliance contributes significantly to the needs of technology development which offer the quality of service mechanisms, allowing satisfactory use of real-time applications like voice and video This paper studies the effects that coexistent voice and data traffic on a IEEE 802.11 standard wireless network cause in the network performance and, consequently, in the applications performance. To make this study a reality, it was necessary to run simulations of a wireless ad hoc topology network, with variations in the number of workstations and the quantity of generated traffic. The 802.11g and 802.11e standards were used in the simulations with the purpose of analyzing the performance of quality of service mechanisms and the benefits they create for the real-time transmissions in IEEE 802.11 standard wireless networks. It was verified that the IEEE 802.11e standard presents a perfomance gain for the real-time applications, but it has limitations that should be considered in wireless networks design.

ASSUNTO(S)

computer networks performance rede de comunicação análise de desempenho simulation sistemas de tempo-real quality of service wireless network wireless voice over ip

ACESSO AO ARTIGO

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