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A Novel Data Burst Scheduling Algorithm in Optical Burst Switching Networks

机译：光突发交换网络中的一种新型数据突发调度算法

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The paper proposes a new buffering and scheduling algorithm of data burst (DB) with fiber delay lines (FDL), namely, data burst delay scheduling algorithm, which is set in core nodes of OBS according to a specific configuration. The main idea is that when bursts contending at a core node, the low-priority class DB is buffered with FDL in order to forward the high-priority DB as early as possible, and the reserved wavelength channel for the low-priority DB will be re-assigned to the contending high-priority DB by sending a new burst control packet (BCP), which is called the second BCP signaling, from the node to the downstream nodes. The effects of network traffic loads, the average length of DBs and the size of FDL buffer on DB’s loss probability and end-to-end delay are studied by simulation. Results show that the proposed scheduling algorithm can obviously reduce DB loss probability and end-to-end delay for high priority class DB. So it can improve significantly the end to-end QoS for high-priority DBs.
机译：本文提出了一种利用光纤延迟线（FDL）的数据突发（DB）的新缓冲和调度算法，即数据突发延迟调度算法，其根据特定配置在核心节点中设置。主要思想是，当在核心节点巡回时，使用FDL缓冲低优先级DB，以便尽可能提前地转发高优先级DB，并且用于低优先级DB的保留波长信道将是通过向下游节点发送被称为第二BCP信令的新突发控制分组（BCP）重新分配给竞争高优先级DB。通过仿真研究了网络流量负载，DB的平均长度和FDL缓冲器的大小的影响，并通过模拟研究了DB的损耗概率和端到端延迟。结果表明，该提出的调度算法明显降低了高优先级DB的DB损耗概率和端到端延迟。因此，它可以显着提高高优先级DBS的端到端QoS。

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