一种低拥塞低复杂度的集成OTN/WDM架构

Abstract

本文提出了一个集成了OTN/WDM且低复杂度的交换架构。首先将OTN与WDM集成在一个交换架构中，通过减少其中的OTN交换器数量以降低该架构的复杂度。为缓解因减少交换器数量导致的拥塞上升，需合理配置OTN交换器，本文使用整数线性规划建模，证明该问题为NP-hard，然后使用一种启发法分析其拥塞表现并求解其近似最优解。实验结果表明，合理地分配OTN交换器可以有效的在降低架构复杂度的同时保证合适的拥塞率，从而达到优化OTN传输网络交换结点的目的。 We propose an integrated OTN/WDM switching architecture which is also in low complexity. First of all, the architecture integrates OTN and WDM in one switching architecture and reduces the complexity by decreasing the number of OTN switches. To relieve the blocking performance of network as a result of reducing the number of OTN switches, it is necessary to reasonably allocate OTN switches. In this article, we introduce an Integer Linear Problem in order to prove this problem NP-hard, and then use a heuristic to evaluate its blocking performance as well as obtain its approximate optimal solution. As the results show, allocating the OTN switches in reason can reduce complexity of the proposed architecture and guarantee proper blocking ratio which optimizes the switching nodes of network.