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定长光突发交换节点的QoS性能分析
引用本文:雒江涛,曾庆济,池灏,张治中.定长光突发交换节点的QoS性能分析[J].通信学报,2004,25(9):9-14.
作者姓名:雒江涛  曾庆济  池灏  张治中
作者单位:1. 重庆邮电学院,通信与信息工程学院,重庆,400065;上海交通大学,宽带光网技术研发中心,上海,200030
2. 上海交通大学,宽带光网技术研发中心,上海,200030
3. 浙江大学,信息与电子工程学系,浙江,杭州,310027
基金项目:国家自然科学重大基金(69990540)
摘    要:分析了光突发交换网络中基于附加偏移时间(EOT,extra offset time)的业务优先等级区分服务的变长突发方案的不足,提出了一种定长光突发方案。它能在较小附加延迟的情况下保证高优先级的业务完全不受低优先级业务的阻塞,即使每个优先级的附加等待时间都减小到变长突发方案的1/3,同时使最高优先级业务的阻塞率更小,而且具有现实可行性。

关 键 词:通信技术  定长光突发  光突发交换  QoS
文章编号:1000-436X(2004)09-0009-06

QoS performance analysis of fixed-length optical burst switching nodes
LUO Jiang-tao,ZENG Qing-ji,CHI Hao,ZHANG Zhi-zhong.QoS performance analysis of fixed-length optical burst switching nodes[J].Journal on Communications,2004,25(9):9-14.
Authors:LUO Jiang-tao  ZENG Qing-ji  CHI Hao  ZHANG Zhi-zhong
Abstract:The fixed-length optical burst switching (OBS) was proposed in order to further improve the quality of service (QoS) in OBS network using the priority scheme which isolated different classes by assigning different extra offset time to them. It was shown that a shorter extra offset time difference was enough to isolate classes completely in this scheme. Compared to variable-length scheme, a smaller blocking probability for the highest priority service and one third latency for every class were obtained in fixed-length scheme.
Keywords:communication technology  fixed length optical burst switching  OBS  QoS  
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