CAJ | 학술논문

提出一种适用于光突发交换网络(OBS)的新型冲突预先规避机制.相应于OBS网络中的每个入口边缘节点,本文根据流量情况为其分配一个或一个以上的专用波长,突发包将沿着专用波长通道传送至不同的目的节点,中间节点处的冲突能够被部分消除.通过构建流量负载平衡扩张树、波长重用以及统计复用波长信道的使用,网络资源利用率仍然保持在一个合理的水平.与光纤延迟线和突发包分段的方案相比,本方案能够实现更低的丢包率.
제출일충괄용우광돌발교환망락(OBS)적신형충돌예선규피궤제.상응우OBS망락중적매개입구변연절점,본문근거류량정황위기분배일개혹일개이상적전용파장,돌발포장연착전용파장통도전송지불동적목적절점,중간절점처적충돌능구피부분소제.통과구건류량부재평형확장수、파장중용이급통계복용파장신도적사용,망락자원이용솔잉연보지재일개합리적수평.여광섬연지선화돌발포분단적방안상비,본방안능구실현경저적주포솔.
In this paper,a novel contention avoidance mechanism for optical burst swishing(OBS)network is proposed.According to traffic status,one or more than one dedicated wavelength is assigned to each ingress node in OBS network,and bursts will transmit along the dedicated wavelength channel to the destination nodes,thus the potential contention Can be eliminated partly.Further,by means of traffic load balance spanning tree.wavelength reuse as well as applying the remained statistical multiplexing wavelength channel,the utilization of network resource can hold a sound level.Simulation result shows our scheme can greatly reduces the burst loss pmbabilicy comparing to Optical Delay Line(FDL)and burst segment scheme.