基于距离自适应和有效共享路径感知的光疏导方法

发布时间：2018-01-17 18:08

本文关键词：基于距离自适应和有效共享路径感知的光疏导方法　出处：《电子与信息学报》2015年08期 　论文类型：期刊论文

【摘要】：针对灵活网格光网络中如何节约转发器与频谱资源的问题,该文研究了多点到多点组播业务的光路环路由机制,提出一种基于距离自适应和有效共享路径感知的光疏导方法。通过设计一种基于距离自适应的预处理机制,该疏导方法能根据业务成员节点的分布特点和距离自适应准则灵活地为业务构建光路环;在路由与频谱分配阶段,该疏导方法通过构造一个面向光疏导的业务决策矩阵和一个优先调度向量,将业务疏导到与当前业务具有有效共享路径最多的已路由业务上,并优先分配所需的频谱空间以提高光疏导的成功率,实现节约转发器与频谱资源的目的。仿真结果表明,该文提出的光疏导方法可以有效地减少业务消耗的转发器数目和子载波数目。
[Abstract]:To solve the problem of how to save transponder and spectrum resources in flexible grid optical networks, this paper studies the optical loop routing mechanism of multicast services. An optical grooming method based on distance adaptation and effective shared path awareness is proposed, and a preprocessing mechanism based on distance adaptation is designed. The grooming method can flexibly construct optical loop for traffic according to the distribution characteristics of service member nodes and distance adaptive criterion. In the phase of routing and spectrum allocation, the grooming method constructs a traffic decision matrix and a priority scheduling vector for optical grooming. The traffic is groomed to the routing service which has the most effective shared paths with the current service, and the required spectrum space is allocated first to improve the success rate of the optical grooming. The simulation results show that the proposed optical grooming method can effectively reduce the number of transponders and subcarriers consumed by traffic.
【作者单位】：重庆邮电大学光纤通信技术重点实验室;重庆邮电大学自动化学院;
【基金】：重庆市教委自然科学基金(KJ1140421) 重庆市科委自然基金(2013jcyj A40052,2011jj A1361) 国家自然科学基金(61275077,61371096)资助课题
【分类号】：TN929.1
【正文快照】： 2(重庆邮电大学自动化学院重庆400065)1引言随着数字广播、物联网和云计算等多播应用需求的增长,光网络面临着业务流量爆炸式增长所带来的巨大挑战和压力,光网络的转发器资源等也日益紧缺[1-3]。目前光网络绿色节能的路由传输研究主要集中于波分复用光网络中[4,5],而基于光正

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