Analysis of a finite buffer queue with heterogeneous Markov Modulated Arrival processes: a study of traffic burstiness and priority packet discarding

This paper considers a single server queueing system with a finite buffer and multiple heterogeneous arrival streams. We focus on Markov Modulated Arrival processes with differing burstiness and investigate the loss of individual arrival streams when the burstiness parameters of the arrival streams are varied. In addition, we study the behavior of loss probabilities for a priority packet discarding scheme, a congestion control mechanism suitable for high-speed networks. Several interesting numerical results are presented. We introduce a new characterization of an arrival stream, which we refer to as self-loss, and use this to qualitatively evaluate the effects of multiplexing bursty streams with non-bursty streams. The effectiveness of priority packet discarding is also investigated numerically. In addition, we study via simulation the conditional probability of packet loss given that one has occurred.