Simulation and Modeling of Packet Loss on Self-Similar VoIP Traffic

This paper investigates the packet loss effects on the VoIP Jitter, and presents a methodology for simulating packet loss on VoIP Jitter traces with self-similar characteristics. Because of its simplicity and effectiveness, the two state Markov model or Gilbert model is used to generate packet loss patterns. We proposed a new model for self-similar VoIP traffic, this model are based on voice traffic measurements, and allowed to relate the Hurst parameter and packet loss. It is found that the relationship between Hurst parameter and packet loss obeys a power-law function with three fitted parameters. Since a number of recent studies have shown that self-similar IP traffic has negative impact on network performance, it is important to consider models that capture this behavior for the design and performance analysis of computer networks. Key-Words: VoIP, Hurst Parameter, Packet Loss, Jitter, Two-State Markov Model