A redundant overbooking reservation algorithm for OBS/OPS networks

A redundant overbooking reservation algorithm for OBS/OPS networks
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OBS/OPS网络冗余超额预订预留算法

DOI:
10.1016/j.comnet.2007.04.011
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发表时间:
2007-09
期刊:
影响因子:
5.6
通讯作者:
Chen, Chang-Jia
Chen, Chang-Jia
中科院分区:
计算机科学3区
文献类型:
--
作者:
Zhao, Yong-Xiang;Chen, Chang-Jia

文献摘要

参考文献

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光突发交换(OBS)是光网络领域的研究热点。光突发交换可以实现统计复用,同时具有部署简单的优点。光突发交换中的一个关键问题是如何降低由于光缓存器的缺失或光纤延迟线(FDL)数量有限而引起的突发丢失率。现有的工作在波长、时间或空间域中解决了这个问题。本文提出了一种算法,它从一个新的域来解决这个问题。特别地,它通过利用上行链路中的空闲带宽来传输突发的冗余副本,以在下游节点提供更多的发送机会。仿真结果证明了我们的算法的高性能。
Optical burst switch (OBS) has been a hot topic in the area of optical networks. OBS can realize statistic multiplexing while having the advantage of simplicity in deployment. A key issue in OBS is how to reduce the rate of the burst dropping caused by the absence of optical buffers or by the limited number of Fiber Delay Line (FDL). Existing work addresses this issue in the wavelength, time, or space domains. This paper proposes an algorithm, which works from a new domain to address this problem. Specially, it works by using the idle bandwidth in upstream links to transmit redundant copies of bursts to provide more sending chances at the downstream node. Simulation results are given to demonstrate the high performance of our algorithm.
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