The impacts of burst assembly on the traffic properties in optical burst switching networks

Optical burst switching (OBS) is regarded as one of the most promising solutions for the next generation backbone. Burst assembly in the edge nodes is an important issue to be addressed in OBS networks. In this paper, the impacts of burst assembly using different schemes on the Poisson traffic properties are investigated and simulated. The results are shown that the intervals of assembled burst arrivals are short dominant, but their service time distributions are much different from each other due to different assembly schemes. When the timer-based scheme is used, a normal-like distribution is obtained, while a long dominant one is obtained when threshold-based scheme is adopted. In addition, the product of the traffic load and time rate keeps invariable in both cases.