Control architecture in optical burst-switched WDM networks
Control architecture in optical burst-switched WDM networks
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DOI：
10.1109/49.887906
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发表时间：
2000-09
影响因子：
16.4
通讯作者：
Y. Xiong;M. Vandenhoute;H. Cankaya
中科院分区：
文献类型：
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作者：
Y. Xiong;M. Vandenhoute;H. Cankaya
光突发交换（OBS）是构建太比特光路由器和实现IP over WDM的一种很有前途的解决方案。本文介绍了OBS的基本概念，给出了OBS网络中光核心路由器和电子边缘路由器的总体结构。本文还讨论了与OBS相关的关键设计问题，即突发集合（突发）、信道调度、突发偏移时间管理和一些尺寸规则。描述了一种非周期时间间隔突发装配机制。提出了一种利用光纤延迟线缓冲器的光纤路由器的数据通道填充调度算法。详细研究了lac - vf（带空隙填充的最新可用未使用信道）信道调度算法。本文报道了以自相似流量为输入的OBS网络中突发流量特性和光路由器性能的初步研究结果。
Optical burst switching (OBS) is a promising solution for building terabit optical routers and realizing IP over WDM. In this paper, we describe the basic concept of OBS and present a general architecture of optical core routers and electronic edge routers in the OBS network. The key design issues related to the OBS are also discussed, namely, burst assembly (burstification), channel scheduling, burst offset-time management, and some dimensioning rules. A nonperiodic time-interval burst assembly mechanism is described. A class of data channel scheduling algorithms with void filling is proposed for optical routers using a fiber delay line buffer. The LAUC-VF (latest available unused channel with void filling) channel scheduling algorithm is studied in detail. Initial results on the burst traffic characteristics and on the performance of optical routers in the OBS network with self-similar traffic as inputs are reported in the paper.