Paper Title
LATENCY-BASED ROUTING AND RESOURCE ALLOCATION IN MULTI-DOMAIN SOFTWARE-DEFINED ELASTIC OPTICAL NETWORKS

Abstract
Abstract - The rapid development and diversification of Internet services is leading to the convergence in the optical network of many services with tolerance of optical connection delay. As result, the average time to establish an optical connection is increasing, which inevitably puts pressure on optical networks. In this study, we address the problem of end-to-end transmission delay management in multi-domain software-defined elastic optical networks. The aim of our study is to optimize transmission delay management in the routing and resource allocation process. We have proposed an inter-domain routing algorithm based on optical path latency, fragmentation and energy consumption. The inter-domain routing algorithm is based on the principle of sub-topology constructed from the domain traversed by the optical path on the basis of hierarchical architecture where each domain is managed by a domain controller and the domain controller is managed by a global controller. Two inter-domains RSA algorithms are proposed, one based on the traditional frequency slot allocation method (First-Fit) and the other on a fragmentation management function (TF) for optical resources. Simulation results show that inter-domain routing performs better with sub-topologies built with all links between adjacent domains, and also when fragmentation management is taken into account. Keywords - Path Latency, Inter-Domain Routing, Multi-Domain, Sub-Topology, Energy Consumption, Fragmentation