A novel contention solution strategy based on priority for optical burst switching networks  

作　　者：管爱红 崔芳芳 

机构地区：[1]Institute of Information Science and Engineering,Henan University of Technology

出　　处：《Optoelectronics Letters》2010年第6期462-465,共4页光电子快报（英文版）

基　　金：supported by the Science and Technology Fund of Henan Province of China (No.092102210261)

摘　　要：A fundamental issue in optical burst switching(OBS) networks is to solve the burst contention for the core node.In this paper,a novel priority-based contention solution strategy for OBS networks is proposed.When the contention occurs,the burst priority is considered firstly,and then the burst segmentation method is used for the low priority bursts in this strategy.Ensuring the integrity of high priority bursts,part of the segmented bursts can be transmitted to the destination node via combining wavelength conversion and optical buffer method.Simulation results show that the proposed scheme not only ensures the integrity of high priority bursts,but also reduces the packet loss rate of the low priority bursts maximally,so that it can support good quality of service(QoS) for the network.A fundamental issue in optical burst switching（OBS） networks is to solve the burst contention for the core node.In this paper,a novel priority-based contention solution strategy for OBS networks is proposed.When the contention occurs,the burst priority is considered firstly,and then the burst segmentation method is used for the low priority bursts in this strategy.Ensuring the integrity of high priority bursts,part of the segmented bursts can be transmitted to the destination node via combining wavelength conversion and optical buffer method.Simulation results show that the proposed scheme not only ensures the integrity of high priority bursts,but also reduces the packet loss rate of the low priority bursts maximally,so that it can support good quality of service（QoS） for the network.

关 键 词：光突发交换网络 突发竞争 优先级 网络服务质量 决策 网络解决方案 核心节点 分割方法 

分 类 号：TN929.1[电子电信—通信与信息系统]