一种新的突发分配业务模型以及在OBS中的应用  

A new bursty assigned traffic model and its applications in OBS

作　　者：陈春汉[1] 于文芳[1] 彭社强[1] 李有根[1] 

机构地区：[1]武汉通信指挥学院,湖北武汉430010

出　　处：《光通信研究》2007年第6期18-19,26,共3页Study on Optical Communications

摘　　要：文章提出了一种新的突发分配业务模型,给出了这种业务模型的详细定义,并应用此模型和传统的非突发分配模型对光突发交换(OBS)中的交换机构进行了性能分析和对比。计算结果表明,当交换机构扇出比F=1、突发强度Bi=2时,突发分配模式下的丢包率比非突发分配模式下的丢包率增加大约一个数量级。也许该突发业务模型并不能真实地反映现实世界的业务流,但其能提供一种逼近现实世界业务流的分析方法。A new bursty assigned traffic model is suggested, its detailed definition given and the performance analysis and comparison made of the switch fabric in Optical Burst Switching （OBS） by using this model and by the conventional non-bursty assigned traffic model. The calculation results show that when the fanout ratio of the switch fabric F = 1 and the bursty intensity Bi = 2, the packet loss rate under the burst assigned traffic model will increase by about one order of magnitude than under the non-bursty assigned traffic model. Perhaps the new bursty assigned traffic model cannot be used to reflect the traffic flow in re- ality, but it offers an analytical approach of approximation to the real traffic flow.

关 键 词：光突发交换 突发分配业务模型 交换机构 

分 类 号：TN915[电子电信—通信与信息系统]