OBS中基于分割和波长转换的冲突解决机制  

The contention resolution mechanism based on burst segmentation and wavelength convertion in OBS networks

作　　者：管爱红[1] 张海芳[1] 王波云[1] 侯睿[2] 

机构地区：[1]河南工业大学信息科学与工程学院.郑州450001 [2]中南民族大学计算机科学学院,武汉430074

出　　处：《光通信技术》2012年第7期38-41,共4页Optical Communication Technology

基　　金：河南省教育厅青年骨干教师资助计划(2011GGJS-081)资助

摘　　要：提出了一种"先分割后波长转换"的冲突解决机制。当冲突发生时,首先对低优先级突发包进行分割;不冲突部分直接在事先预留的输出数据信道上处理,冲突部分通过WC转换到空闲的波长信道上。仿真结果表明,高优先级突发包的丢失率比低优先级的要低,并且各优先级突发包的丢失率随核心节点WC转换度的增加而降低。A contention resolution mechanism is proposed. The idea of the mechanism is first segmented and then wavelength converted. When a collision occurs, the low priority burst is first segmented. The collision free parts are handled directly in the reserved output data channel. The collision parts are converted to free wavelength channel by the wavelength converter. The result of the simulation shows that the burst loss proba- bility of the high priority is much lower than that of the low priority ones, and the burst loss probability of dif- ferent priority decrease with increasing the conversion caoacitv of the core node wavelength converter.

关 键 词：光突发交换 突发包分割 波长转换 丢包率 

分 类 号：TN929.11[电子电信—通信与信息系统]