Optical burst switching (OBS) - a new paradigm for an Optical Internet^{1}
Optical burst switching (OBS) - a new paradigm for an Optical Internet^{1}
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发表时间：
1999-03
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通讯作者：
C. Qiao;Myungsik Yoo
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作者：
C. Qiao;Myungsik Yoo
为了有效地支持互联网（尤其是万维网）上的突发流量，提出了光突发交换（OBS）作为构建下一代光互联网时简化协议和硬件的一种方式。通过利用光通信的吸引人的特性，同时考虑到其局限性，OBS结合了光电路交换和分组/信元交换的优点。本文介绍了光突发交换协议的基本概念，特别是基于JET的光突发交换协议，沿着了光突发交换协议对IP over WDM的适用性。具体的问题，如使用光纤延迟线（FDLs），以适应处理延迟和/或解决冲突也进行了讨论。此外，基于JET的OBS协议，使用一个偏移时间沿着与延迟预留，以实现有效利用带宽和FDL，以及支持基于优先级的路由的性能进行了评估。
To support bursty traffic on the Internet (and especially WWW) efficiently, optical burst switching (OBS) is proposed as a way to streamline both protocols and hardware in building the future generation Optical Internet. By leveraging the attractive properties of optical communications and at the same time, taking into account its limitations, OBS combines the best of optical circuit-switching and packet/cell switching. In this paper, the general concept of OBS protocols and in particular, those based on Just-Enough-Time (JET), is described, along with the applicability of OBS protocols to IP over WDM. Specific issues such as the use of fiber delay-lines (FDLs) for accommodating processing delay and/or resolving conflicts are also discussed. In addition, the performance of JET-based OBS protocols which use an offset time along with delayed reservation to achieve efficient utilization of both bandwidth and FDLs as well as to support priority-based routing is evaluated.