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Designing an Optimal Scheduler Buffer in OBS Networks

机译:在OBS网络中设计最佳调度程序缓冲区

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摘要

In this paper, we dimension a buffer in which headers are enqueued before processing in an optical burst switching (OBS) network. For the first time, we develop and analyze a unified OBS model comprising a set of homogeneous and independent edge buffers that feed bursts to a standalone link and their headers to a scheduler. Packets arrive at each edge buffer and are assembled into bursts, after which they are transmitted on a wavelength channel if their corresponding headers are successfully processed. In a case study, we demonstrate numerically that an optimal scheduler buffer size may exist and depends on the number of packets comprising a burst and the size of an edge buffer. We also show that packet blocking probability can be minimized using a simple rule of thumb for determining the optimal size of a scheduler buffer and the number of packets comprising a burst. All our analytical results are validated by way of simulation.
机译:在本文中,我们确定了在光突发交换(OBS)网络中进行处理之前将头放入队列的缓冲区的大小。第一次,我们开发和分析了一个统一的OBS模型,该模型包括一组同类且独立的边缘缓冲区,这些缓冲区将突发发送给独立链接,并将报头发送给调度程序。数据包到达每个边缘缓冲区并组合成突发,如果成功处理了它们的相应报头,则在波长信道上将其传输。在一个案例研究中,我们用数字证明了可能存在最佳调度程序缓冲区大小,并且取决于包含突发的数据包数量和边缘缓冲区的大小。我们还表明,可以使用简单的经验法则来最小化数据包阻塞概率,以确定确定调度程序缓冲区的最佳大小以及包含突发的数据包数量。我们所有的分析结果均通过仿真验证。

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