Performance Evaluation of Push-To-Talk Group Communication
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 6
Abstract
Recently the VoIP technology has been used for the purpose of voice conversation through the Internet since the proliferation of smart phones. In this paper, we are interested in the network performance of the group communication a.k.a. the push-to-talk (PTT) service. As the media traffic to a VoIP serverincreases, the VoIP server can be a bottleneck and the voice quality can be declined, which results from the asymmetry between the in-bound traffic and the out-bound traffic in a VoIP server. To simulate the voice packet transfer of the group communication, we use ns-2.34 and the ns2VoIP++ package to calculate the end-to-end mean opinion score. Simulation results show that both the packet error rate and the packet delay have a significant effect on the performance in terms of the mean opinion score
Authors and Affiliations
Jong Min Lee
Keywords
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