Converter-Aware Wavelength Assignment in WDM Networks with Limited-Range Conversion Capability

A Wavelength and Converter Assignment Scheme using Converter Usage History in Wavelength-Routed Networks

“…The FLR [15] tries to decrease blocking probability by minimizing the number of converters assigned to a lightpath. The FLR uses the concept of lambda-run.…”

“…If a set of lambda-runs from the source to the destination is found, the lightpath is successfully set up, otherwise, blocked. In [15], it is proven that this simple policy leads to minimizing the number of wavelength conversions in setting up a lightpath.…”

“…As a result, they tend to assign more converters than needed in order to establish a lightpath, and consequently, the more forthcoming lightpaths are blocked because of wavelength continuity constraint. Some conventional algorithms (First-Longest lambda-Run (FLR) [15] and LEast Converter first (LEC) [16]) consider both wavelength and converter assignment. They try to decrease lightpath blocking probability by minimizing the number of converters assigned to a lightpath.…”

Restoration in all-optical GMPLS networks with limited wavelength conversion

“…The conversion between wavelengths can be achieved in different ways [16,17], but all these implementations are very costly. Furthermore, some WCs may only allow conversion between a limited range of wavelengths [18,19], increasing the complexity of routing and wavelength assignment [20,21]. Due to the high price of WCs, several studies focus on minimizing their deployment in a network, either through advanced routing and wavelength assignment heuristics or sharing schemes [15,[21][22][23][24][25][26][27].…”