静态波带交换中的一种波带粒度取值算法

发布时间：2018-04-16 22:16

本文选题：光交换 + 波带交换　；参考：《光电子.激光》2014年09期

【摘要】：波带交换可以有效地减少波长交换的交换端口数量,本文研究节点间业务量已知时静态波带交换中的波带粒度取值算法,提出了基于k均值聚类的波带粒度取值算法。算法将业务量相近的业务分为一组,一组内的业务用相同粒度的波带装载,以提高波带的利用率。研究表明,在没有业务疏导的环境下,与其他方法相比,算法使用的波带数量和波带内的空闲波长数量都比较少。本文还研究了静态疏导环境下不同波带粒度取值算法的性能,提出了多波带粒度下的业务装载策略。对于大粒度的波带,使用向下装载,而对于小粒度的波带,使用向上装载,意在减少波带的使用数量的同时提高波带利用率。仿真结果表明,使用静态业务疏导后,本文算法与其他方法相比,依然可以有效地减少波带数量,提高波带利用率。与基于组播路由的静态波带疏导算法相结合,使波带利用率可以达到98%以上。
[Abstract]:Wave band switching can effectively reduce the number of switching ports of wavelength switching. In this paper, we study the algorithm of wave band granularity in static wave band switching when traffic between nodes is known, and propose a new algorithm based on k-means clustering.The algorithm divides the services with similar traffic into a group, and the services in a group are loaded with the same size of wave band to improve the utilization rate of the wave band.It is shown that in the absence of traffic grooming, the number of wavebands and the number of free wavelengths in the waveband are less than other methods.This paper also studies the performance of different band granularity selection algorithms in static grooming environment, and proposes a service loading strategy for multi-band granularity.For the large grained zone, the downward loading is used, while for the small grain band, the upward loading is used to reduce the use of the band and increase the utilization rate of the wave band.The simulation results show that, compared with other methods, the proposed algorithm can effectively reduce the number of waveband and improve the utilization rate of wave band after using static traffic grooming.Combined with the static band grooming algorithm based on multicast routing, the band utilization ratio can reach over 98%.
【作者单位】：西安电子科技大学综合业务网理论与关键技术国家重点实验室;
【基金】：国家“863”计划(2012AA01A505) 国家重大科技成果转化(KJ0800122905) 中央高校基本科研业务费专项(K5051301023) 高等学校创新引智计划(B08038) ISN国家重点实验室基金(ISN1104003)资助项目
【分类号】：TN929.1

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