Performance Evaluation of Shared Wavelength Allocation for WDM Networks with Limited-Range Wavelength Conversion

摘要

In this paper, we propose a shared wavelength allocation to provide multiple QoS classes in terms of con-nection loss probability. With the allocation, wavelengths are classified into two types of sets, dedicated wavelength sets and a shared wavelength set, and connections are established using idle wavelengths within either set at each node. The performance of our proposed method depends on the capability of wavelength conversion and we consider how the method is applied to a wavelength routing network with limited-range wavelength conversion. We evaluate the performance of the method for an uni-directional ring network by simulation. In numerical examples, we show that the shared wavelength allocation is quite effective for wavelength routing network with limited-range wavelength conversion when low priority class requires small connection loss probability.