Optical Burst Switching Network: An Overview
Assistant Professor, Dept of Electronics & Communication Engineering, SLTIET, India
ABSTRACT
Optical Bursts Switching (OBS) is a relatively new optical switching paradigm. In this paper, I give an introduction to optical burst switching (OBS) and compare it with other existing optical switching paradigms like circuit and packet switching. Contention and burst loss in OBS networks are major concerns. In this paper I have also discussed about OBS network architecture and enabling technologies of OBS. To resolve contentions, an interesting alternative to discarding the entire data burst is to partially drop the burst. Partial burst dropping is based on burst segmentation concept that its implementation is constrained by some technical challenges, besides the complexity added to the algorithms and protocols on both edge and core nodes. In this paper, the burst segmentation concept is investigated, and an implementation scheme CPQ is proposed and evaluated.
