Analysis of the burst loss rate in OBS rings with depth limited optical buffers

Abstract

Optical Burst Switching (OBS) is considered as the promised solution for next generation backbone networks, but the high burst loss rate caused by the burst contention is a great hindrance to the practical use.

The authors proposed a new way to solve the burst contentions in OBS rings. As illustrated in the paper, basing the optical buffers with depth about the maximum Data Burst (DB) size and a proper wavelengths selection strategy for the local DBs the burst loss rate in an OBS ring can be decreased to a negligible level. So buffer insertion, the most successful method for asynchronous packet switching, can be adopted in OBS ring by an acceptable cost.