Optical Networking White Papers
Early Drop and Wavelength Grouping Schemes for Providing Absolute QoS Differentiation in Optical Burst-Switched Networks
Overview A number of schemes have been proposed to support QoS in Optical Burst-Switched (OBS) networks. Most schemes only support relative QoS differentiation instead of absolute QoS guarantee. However, absolute QoS differentiation is a basic requirement for many delay and loss sensitive applications. This paper proposed two mechanisms for providing absolute QoS differentiation in OBS networks, an early drop mechanism, which selectively drops non-guaranteed traffic, and a wavelength grouping mechanism, which manages wavelengths for guaranteed traffic. This paper shows that the combination of these two mechanisms not only outperforms other schemes in providing loss guarantees, but also improves the loss performance of non-guaranteed traffic.
| Publisher | University of Texas | File Format | |
|---|---|---|---|
| Date Published | August 2003 | ||
| Format | White Papers | ||
| Topics | |||
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