Indian Journal of Science and Technology

Abstract

Optical Burst Switching (OBS) is a switching paradigm that offers very high throughput with reasonable delay. In OBS, data is transported in the form of the optical burst of unknown length. Till date, the size of the burst can’t be estimated in advance. Hence, in OBS deflection routing, contending burst is deflected to some other node and after some more slot, it will re-appear on the same node. This mechanism is known as deflection of burst. In our previous work, an estimation of burst is done and optical node architecture is used to store optical burst. The buffering of burst will reduce average latency as well as improve Burst Error Probability (BER). In this paper, the performance evaluation of the node architecture is presented under various conditions and it is shown that deflection routing along with buffering of contending burst provide very effective solution.

Keyword:
Burst Loss Probability, Switch Architecture, OBS