An Algorithm for Resource Allocation and Partial Protection of Transparent Optical WDM Networks with Service Differentiation

The WDM optical networks have a high transmission capacity, but still present challenges in the efficient provision of resources. With the increasing deployment of WDM technology in WAN and MAN networks, the demand for resources has become increasingly more heterogeneous, with demands for best-effort traffic, going along with traffic demands of high capacity and QoS requirements, of emerging applications (e.g. Video 4K, 8K and e-science). This article proposes a solution that combines several techniques for the efficient provisioning of resources in WDM networks, such as dynamic traffic grooming, multipath routing and preventive dynamic blocking, survivability through partial protection, and a wavelength reservation mechanism. The proposed algorithm is more efficient as a whole, and is also able to meet the demands of each class efficiently, compared with the literature.