基于阈值优先分割的光通信网络冲突解决方法  

Resolution for Optical Communication Network Contention Based on Threshold Priority Segmentation

作　　者：张蓉[1] 

机构地区：[1]四川工程职业技术学院计算机科学系,四川德阳618000

出　　处：《科技通报》2015年第4期175-177,共3页Bulletin of Science and Technology

摘　　要：针对光通信网络中不同优先级业务突发冲突问题,导致数据服务质量差与丢包率高的问题,提出一种基于阈值优先分割的光通信网络冲突解决方法,该方法根据阈值分割准则来控制偏射路径,当不同优先级数据包冲突时,首先分割优先级较低的数据包进行偏射,然后根据阈值优先分割准则在冲突路由节点寻找最优路径,最后将冲突数据包通过预置或空闲路径传输,使得不同优先级业务数据包分配更加合理,最大限度地降低了由突发冲突引起的高阻塞率与丢包率。仿真结果表明,该方法可以有效降低总丢包率并保证其服务质量,且网络延时较小,从而改善整个OBS网络的服务质量性能。For the lack of deflection routing in optical communication network, the problem of high priority to different quality of service is poor and the packet loss rate, a method for solving the problem of optical communication network based on priority conflict threshold segmentation, the method based on threshold segmentation criterion to control the deflection path, when different priority packet collisions, the first priority is the segmentation low packet deflection, then according to the threshold priority segmentation criterion to find the optimal path in the conflict routing node, the packet collision free path by preset or transmission, the service of different priority packets more reasonable, minimizing the network burst blocking probability and packet loss rate. The simulation results show that, this method can effectively reduce the packet loss rate and guarantee the quality of service, and the network delay is small, the service quality so as to improve the performance of the entire OBS network.

关 键 词：光突发冲突交换 优先级 阈值分割 偏射路由 

分 类 号：TN929.1[电子电信—通信与信息系统]