Statistics prosperity study on aggregation traffic in the optical burst switching network

In Optical burst switching (OBS) networks, one important issue is how the performance will be affected by burst assembled from packets. In this paper, we study the fundamental statistic properties of Possion and Pareto traffic, such burst length distribution, inter-arrival time distribution and the switching performance with different aggregation schemes. The results show that the traffic will approach the Gaussian distribution of both kinds of traffic, but the aggregation operation has little effect on the heavy tail of Long Range Dependent traffic. The aggregation algorithm based on aggregation time degrades the loss performance of burst switch because burst arrivals easily concentrate a moment at the period of aggregation time window.