QoS performance of optical burst switching in IP-over-WDM networks
QoS performance of optical burst switching in IP-over-WDM networks
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DOI：
10.1109/49.887925
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发表时间：
2000-10
影响因子：
16.4
通讯作者：
Myungsik Yoo;C. Qiao;S. Dixit
中科院分区：
文献类型：
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作者：
Myungsik Yoo;C. Qiao;S. Dixit
我们解决了如何在具有有限光纤延迟线(FDL)的光突发交换WDM网络中提供基本服务质量(Qos)的问题。与现有的基于缓存的服务质量策略不同，本文研究的基于偏移量时间的服务质量策略不需要任何缓存来隔离流量，但可以利用动态链接库来提高服务质量。这使得所提出的服务质量方案适用于下一代光互联网。量化了在进行波长和FDL预留时进行类分离所需的偏移时间，并分析了突发丢失率的上下界。通过仿真，从突发丢失率和排队时延两个方面对服务质量进行了评估。我们证明了在有限的FDL的情况下，基于偏移时间的Qos方案可以非常有效地支持基本的Qos。
We address the issue of how to provide basic quality of service (QoS) in optical burst-switched WDM networks with limited fiber delay lines (FDLs). Unlike existing buffer-based QoS schemes, the novel offset-time-based QoS scheme we study in this paper does not mandate any buffer for traffic isolation, but nevertheless can take advantage of FDLs to improve the QoS. This makes the proposed QoS scheme suitable for the next generation optical Internet. The offset times required for class isolation when making wavelength and FDL reservations are quantified, and the upper and lower bounds on the burst loss probability are analyzed. Simulations are also conducted to evaluate the QoS performance in terms of burst loss probability and queuing delay. We show that with limited FDLs, the offset-time-based QoS scheme can be very efficient in supporting basic QoS.