On the Effects of the Packet Size Distribution on the Packet Loss Process
Real-time multimedia applications have to use Forward Error Correction (FEC) and error concealment techniques to cope with losses in today's best-effort Internet. The efficiency of these solutions is known however to depend on the correlation between losses in the media stream. In this paper, the authors investigate how the packet size distribution affects the packet loss process, that is, the distribution of the number of lost packets in a block, the related FEC performance and the average loss run length. They present mathematical models for the loss process of the MMPP+M/D/1/K and the MMPP+M/M/1/K queues; they validate the models via simulations, and compare the results to simulation results with an MPEG-4 coded video trace.