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Overview:

This paper gives an introduction to optical burst switching (OBS) and compares it with other existing optical switching paradigms. Basic burst assembly algorithms and their effect on assembled burst traffic characteristics are described first. Then a brief review of the early work on burst transmission is provided followed by the description of a prevailing protocol for OBS networks called Just-Enough-Time (JET). Algorithms used at an OBS core node for burst scheduling as well as contention resolution strategies are presented next. Tradeoffs between their performance and implementation complexities are discussed. Recent work on QoS support, IP/WDM multicast, TCP performance in OBS networks and Labelled OBS is also described, and several open issues are mentioned.

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Format:PDFSize:163 KB
Date:Jan 2008
Pages:13

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