Priority-Based Wavelength Assignment Algorithm for Burst Switched WDM Optical Networks (<Joint Special Issue> Recent Progress in Optoelectronics and Communications)

概要

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Burst, switched WDM optical networks are coming up as suitable network architectures fur future Optical Internet, backbones. However, the lack of optical processing capabilities results in increased burst blocking probability, which in turn lead to very limited network performance. Efficient contention resolution algorithm is therefore necessary. In tins paper, we propose a distributed wavelength assignment algorithm named Priority-based Wavelength Assignment (PWA) for such networks. Each node selectively assigns wavelengths based on the wavelength priority information "learned" from its wavelength utilization history in a distributed manner. As the learning process progresses, nodes in the same part of the network tend to assign different wavelengths to avoid contentions. Simulation results show that the PWA can effectively reduce the blocking probability and increase the performance of burst, optical networks compared to previous algorithms such as random assignment.
社団法人電子情報通信学会の論文
2003-05-01