构建网络的新方法:基于环路的混合交换光网络

Novel method for constructing network:cycle-based hybrid switching optical networks

为了能够更好地支持突发性数据业务,提出了一种新型网络交换结构——基于环路的混合交换光网络(cycle-based hybrid switching optical networks,CHSON)。该网络结合了光电路交换(OCS)和光突发交换(OBS)两种交换技术,不仅可以有效地降低网络节点的分组转发压力,而且能够较好地承载突发性数据业务。首先介绍了CHSON的网络结构和虚拓扑设计,然后阐述了节点设计及其执行流程。仿真表明,CHSON具有比OCS网络更低的丢包率,而且在丢包率和平均分组延时方面,CHSON较OBS网络有明显改善。

To efficiently support the bursty traffic patterns of the current networks, this paper proposed a novel optical network design method, CHSON. CHSON integrated optical circuit switching and optical burst switching technologies, which could not only reduce the strain on packet forwarding of traditional point to point WDM solutions to relieve electronic bottleneck, but also accommodate bursty traffic. Firsty introduced the overall architecture of CHSON and virtual topology design involved. Then illustrated node design and implementation. The simulation results show that the packet loss ratio of CHSON is much lower than that of traditional OCS networks, and CHSON outperformed OBS networks dramatically in both packet loss ratio and average delay.