自相似业务下共享通道保护WDM网络性能分析

葛晨晖; 黄晋竹; 孙小菡; 张明德

自相似业务下共享通道保护WDM网络性能分析

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出版历程
- 收稿日期: 2005-09-05
- 修回日期: 2006-04-11
- 刊出日期: 2006-11-19

Performance of WDM Network with Shared-Path Protection Under Self-Similar Traffic

摘要

摘要: 该文利用随机中点置换-分形高斯噪声(RMD-FGN)方法生成自相似业务，并且利用分层图方法来记录WDM网络状态，提出了一种链路状态描述模型。对自相似业务下55 Mesh_Torus共享通道保护WDM网络性能进行了仿真。结果表明：当业务的自相似系数或方差变大时，也就是说业务的突发程度变大时，阻塞率变大，网络的性能下降。增加单纤波长数，可以降低阻塞率，提高网络性能。
- 波分复用; 共享通道保护; 自相似业务; 分层图
Abstract: A method of Random Midpoint Displacement-Fractional Gaussian Noise (RMD-FGN) is applied to generate self-similar traffic. A link state model is presented and used to describe the wavelength usage of Wavelength Division Multiplexing (WDM) network with layered-graph model. The performance of a 55 Mesh_Torus WDM network with shared-path protection under self-similar traffic is simulated. The result shows that when the self-similar coefficient or the variance of traffic increases, that is, the burst of traffic rises, the block probability goes up and the performance of network decreases. The block probability falls as the number of wavelength per fiber grows.

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