最小代价最大节点度数的稀疏光疏导方法

发布时间：2018-02-15 23:24

本文关键词： 稀疏疏导网络光疏导节点节点共享度节点代价请求阻塞率　出处：《光子学报》2014年08期 　论文类型：期刊论文

【摘要】：疏导可以增加多播业务请求成功传输概率并提高光纤链路带宽利用率,但波分复用光网络中所有节点具有疏导能力则会增加网络造价和复杂度.本文研究了稀疏疏导网络中疏导节点选择策略,提出基于最小代价最大节点度数的疏导节点选择策略;根据疏导节点和非疏导节点功能差别,改进了稀疏疏导网络中多播请求的疏导传输方法.结合最小代价最大度数疏导节点选择策略和多播业务稀疏疏导传输方法,提出一种根据网络业务阻塞率限定值指标实现多播请求所需最少数目疏导节点的稀疏路由方法.仿真结果表明:在网络给定波长数和光收发器端口数目情况下,所提策略能够节约所需疏导节点数目并优化疏导节点位置,降低网络节点构造造价.
[Abstract]:Grooming can increase the probability of successful transmission of multicast requests and improve the bandwidth utilization of fiber links. However, the cost and complexity of the network will be increased if all nodes in WDM optical network have grooming ability. In this paper, the selection strategy of grooming nodes in sparse grooming networks is studied, and a strategy of selecting grooming nodes based on minimum cost and maximum degree of nodes is proposed. According to the function difference between grooming node and non-grooming node, this paper improves the grooming transmission method of multicast request in sparse grooming network, combining the minimum cost maximum degree grooming node selection strategy and multicast service sparse grooming transmission method. In this paper, a sparse routing method is proposed to realize the least number of grooming nodes required for multicast requests according to the limited value index of network traffic blocking rate. The simulation results show that under the given wavelength number and the number of optical transceiver ports in the network, a sparse routing method is proposed. The proposed strategy can save the required number of grooming nodes, optimize the location of grooming nodes, and reduce the construction cost of network nodes.
【作者单位】：重庆邮电大学通信与信息工程学院重庆市光纤通信技术重点实验室;
【基金】：国家自然科学基金(Nos.61275077,61371096,51175535) 国家重点基础研究发展计划项目(No.2012CB315803) 重庆市科委自然科学基金(Nos.CSTC 2013jcyjA40052,CSTC2012jjB40009) 重庆市教委项目(KJ1400421)资助
【分类号】：TN929.1

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