Modeling impact of ROADM intra-node Add/Drop contention on a single node lightpath blocking performance

Abstract

His research interests include integrated optical and wireless networks, spectrum efficient optical networks, and green optical networks. He has authored and coauthored more than 90 peer-reviewed technical papers.

Lightpath blocking analysis for optical networks with ROADM intra-node add-drop contention

“…We also found that the colorless capacity is important in reducing lightpath blocking. Furthermore, for a single ROADM node, we formulated an analytical model and studied how intra-node contention can impact lightpath blocking under different contention factors [42,43]. The current study extends this from the single node case to an entire network.…”

“…An alternative approach to analytically predicting lightpath blocking with the intra-node contention is a novel contribution of this paper. As mentioned in general in [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43], this would be more desirable for the design and planning of networks as analytical methods not only give results faster and more conveniently than simulations, they would also allow a better understanding of the underlying behavior of the system. This has been attempted, for the first time in this paper, for ROADM nodes with intra-node contention.…”

“…We present here a model to analyze how the intra-node contention can impact lightpath blocking as this would be of great significance in the overall performance of the system. It should be noted that the assumptions and some equations in the model have extended or reused those in the models developed for the WDM networks in the literature such as [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. Our key contribution is to incorporate ROADM intra-node contention to model blocking of lightpaths.…”