Improved algorithms for synchronizing computer network clocks
IEEE/ACM Transactions on Networking (TON)
Mobile communications
Numerical Recipes in C++: the art of scientific computing
Numerical Recipes in C++: the art of scientific computing
802.11 Wireless Networks: The Definitive Guide
802.11 Wireless Networks: The Definitive Guide
Reconsidering wireless systems with multiple radios
ACM SIGCOMM Computer Communication Review
Automatic IEEE 802.11 rate control for streaming applications: Research Articles
Wireless Communications & Mobile Computing - Radio Link and Transport Protocol Engineering for Future-Generation Wireless Mobile Data Networks
Quality of service in ad-hoc networks
Quality of service in ad-hoc networks
Adaptive playout scheduling and loss concealment for voice communication over IP networks
IEEE Transactions on Multimedia
Implementing VoIP: a voice transmission performance progress report
IEEE Communications Magazine
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This work analyzes the voice communication over IEEE 802.11 networks (VoWiFi). It empirically characterizes the transmission problems of VoWiFi and describes scenarios where it could be used over the existing network technologies. The two major problems found were: the excessively long handoffs and the occurrence of bursts. We conclude that is feasible to use VoWiFi if, during a voice call, mobility is kept low, signal strength is high enough and the network capacity is not exceeded.Este trabalho faz uma avaliação da comunicação de voz sobre redes IEEE 802.11 (VoWiFi). Para isto, caracteriza empiricamente os problemas de transmissão e aponta cen´rios em que a implantação de VoWiFi é vi´vel utilizando-se as tecnologias atualmente disponĩveis. Os dois principais problemas encontrados foram: a longa duração das migrações (handoffs) e a ocorrência de tr´fegos em rajada. Concluĩmos que, com as tecnologias atuais, a utilização de VoWiFi é vi´vel desde que, durante uma chamada, a mobilidade seja baixa, a qualidade do sinal seja suficientemente alta e que a capacidade de transmissão da rede não seja excedida.