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提出了光突发交换网络支持服务质量的一种新方案.在此方案中,核心节点根据到达的数据突发的优先级别,将每一出口链路的数据信道进行分组.每一组别的数据信道数主要取决于相应优先级别的数据流量.通常情况下,属于某优先级别的数据突发会被调度在相应组别的数据信道上.在高优先级别的数据突发未能预留在其相应组别的数据信道上时,可尝试为其在低组别的数据信道上预留,甚至抢占低组别内已经被预留的信道;低优先级别的数据突发不能被预留在高组别的数据信道上.另外,也考察了抢占数据突发长度与被抢占数据突发长度之间的关系.
A new scheme of optical burst switching network supporting service quality is proposed.In this scheme, the core nodes group the data channels of each egress link according to the priorities of the arriving data bursts.Each group The number of data channels depends mainly on the data flow of the corresponding priority.Usually, data bursts belonging to a certain priority level are scheduled on the data channel of the corresponding group.An data burst of high priority can not be reserved at Its corresponding group of data channels, it may try to reserve for it on the data channel of the low group and even preempt the channel which has been reserved in the low group; the data burst of the lower priority can not be reserved High group on the data channel.In addition, also examined the preemptive data burst length and preempted data burst length between the relationship.