智能光网络多播路由和波长分配算法的研究

发布时间：2017-12-27 13:44

本文关键词：智能光网络多播路由和波长分配算法的研究　出处：《南京邮电大学》2016年硕士论文　论文类型：学位论文

【摘要】：路由与波长分配(RWA)是智能光网络(ION)中的关键技术,各种高带宽多播业务的兴起及其差异化服务质量(QoS)的需求,使得光网络中的多播RWA问题及其对区分业务的支持成为一个重要且具有挑战性的课题。论文对智能光网络中稀疏分光配置约束下的多播RWA算法及其对区分业务的支持进行了研究,通过理论分析和数值仿真等方法对提出的改进算法进行了性能分析。论文首先简述了智能光网络的基本原理与关键技术,重点分析和讨论了多播RWA问题及现有的解决方案。在考虑波长连续性限制和稀疏分光配置的条件下,提出了基于改进ERLH算法的光网络多播RWA算法—SERLH-MRWA算法,改进算法在选路时综合考虑路径的代价和网络资源使用情况,可以动态调节选路策略;论文还提出了基于IRES策略的波长分配算法,根据预定时间段内到达各等级业务的比例不同更新各等级业务的预留波长数,并将该波长分配算法与引入不同等级业务剩余波长率后的改进ERLH算法相结合,构建了支持区分业务的光网络多播RWA算法—IRES-MRWA算法,使选路时兼顾考虑相应等级业务的网络资源使用情况。论文通过自主搭建的仿真环境对提出的改进算法进行了实验,结果表明:与传统ERLH+FF算法相比,SERLH-MRWA算法可以有效降低网络阻塞率,使资源得以更为充分的利用;IRES-MRWA算法不仅实现了业务的差异化处理,而且具有较好的网络平均阻塞率性能。
[Abstract]:Routing and wavelength assignment (RWA) is the intelligent optical network (ION) technology, and the rise of quality differentiated services to various high bandwidth multicast service (QoS) requirements, the optical network multicast RWA problem and an important and challenging task to distinguish between business support become. In this paper, the multicast RWA algorithm under the constraint of sparse light splitting in intelligent optical network and its support for differentiated services are studied. Through theoretical analysis and numerical simulation, the performance of the improved algorithm is analyzed. This paper first describes the basic principles and key technologies of intelligent optical network, and focuses on the analysis and discussion of the multicast RWA and the existing solutions. In considering wavelength continuity constraint and sparse splitting configuration under the condition that the proposed multicast RWA algorithm SERLH-MRWA algorithm in optical network based on improved ERLH algorithm, the improved algorithm in the routing path when considering the cost and the use of cyber source, dynamic routing strategy; the paper also proposed the wavelength assignment algorithm based on IRES strategy, the number of update reserved wavelengths different class service according to the level of business within a predetermined period of time in different proportion, and the wavelength assignment algorithm and improved ERLH different levels of business after the rate of residual wavelength algorithm combining optical network built to support DiffServ multicast RWA algorithm IRES-MRWA algorithm so, when considering the use of routing corresponding level services cyber source. The simulation environment of self built experiments were carried out on the proposed algorithm show that: compared with the traditional ERLH+FF algorithm, SERLH-MRWA algorithm can effectively reduce the network congestion rate, so that the resources can be more fully utilized; the IRES-MRWA algorithm not only realizes the service differentiation, but also has a good performance of the network blocking rate.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.1

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