Simulation and modeling of packet loss on α-stable VoIP traffic
Homero Toral, Deni Torres-Román, Leopoldo Estrada · 2009
In this paper, through an extensive analysis it is shown that VoIP traffic jitter exhibits heavy-tail characteristics, where α-stable distribution particularly gives the best goodness of fit; this fact has serious implications on the design of de-jitter buffer size. On the other hand, we investigate the packet loss effects on the VoIP jitter, and present a methodology for simulating packet loss on VoIP jitter traces with α-stable characteristics. In order to represent the packet loss process, the two state Markov model or Gilbert model is used. We proposed a new model for α-stable VoIP traffic, this model are based on voice traffic measurements, and allows to relate the α parameter and packet loss rate. We find that the relationship between α parameter and packet loss rate obeys a power-law function with three fitted parameters.