Optimized survivability scheme to safeguard end-to-end QoS in the next generation optical networks

Optical technology is employed in modern telecommunication networks especially for backbone networks. An optical fiber cable consists of a bundle of glass threads and is capable of sending messages into several lightpaths. Therefore, the failure of an optical fiber affects all the lightpaths, causing multiple failures, which impacts severely on the entire network performance. As a result, the network will fail to meet the end-to-end quality of service (QoS) requirements. The failure of the backbone may lead to social and economic damages which may be catastrophic. Survivability in the Next Generation Optical Networks (NGONs) is critical for the success of the next generation optical networks. Survivability is therefore a critical aspect in the delivery of data in achieving end-to-end QoS requirements in the next generation optical networks. In this paper, we implement a hybrid dedicated path protection (HDPP) differential survivability scheme to safeguard end-to-end QoS in the NGONs. Hybrid dedicated path protection scheme is based on dedicated path protection. The results of the investigation show that unprotected path, shared path protection and hybrid dedicated path protection, HDPP show that the differential survivability scheme is a promising scheme to provision end-to-end QoS in the NGONs.