OBS网络中基于缓存和分割的冲突解决方法研究

Study of Contention Resolution Methods Based on Buffering and Segmentation in Optical

光突发交换网络被认为是一种新型的IPoverWDM光网络,其中突发包在核心路由器中发生的冲突问题是一个关键的研究课题。解决冲突的方法可以分为利用缓存和不利用缓存两大类。目前对这两种方法进行的单独研究很多,这就存在有很大的局限性,因为独立的研究并不能灵活适应网络环境的需求,这样就不能达到优化网络的目的。本文针对这样的局限性,首先列出了几种光缓存结构,而后以一种结构较优越的缓存结构和分割策略进行了综合性能比较,分析了两种策略各自的优势,得出的一些有用结论对于以后实际光突发交换网络的优化设计具有一定的理论指导意义。

Optical burst switching network has been proposed as a novel IP over WDM optical network,and burst contention in the core router is a critical issue.The contention resolution schemes could be separated as two categories, which are using buffering and not using buffering.Existing many researches on burst contention have great limitation because they only study the single scheme between the two,so,it can＇t gain an optimizing network because of the single research couldn＇t adapt to the changeable network scenario.Aiming at this limitation,several architectures of optical buffer have been proposed in this paper firstly,then,the advantages of the two schemes have been presented, some useful results have been educed at last and they have theoretic significance for the optimize designing of the real optical burst switching network in the future.