MetaRing fairness control schemes in all-optical WDM rings

WDM rings are receiving significant attention in the field of all-optical networks because their implementation appears to be feasible with state-of-the-art components. Several MAC protocols were recently proposed in order to resolve contentions among nodes sharing the available wavelengths in WDM rings. These MAC protocols achieve high efficiency but unsatisfactory fairness, due to the asymmetric position of sources with respect to destinations. Thus, in order to improve fairness, it is necessary to adopt a fairness control scheme. We discuss the adaptation of the MetaRing fairness control scheme to the context of WDM multi-channel rings. Several alternatives are considered and compared via simulation