Dynamic virtual network embedding algorithm based on multi-path virtual concatenation in elastic optical network

This paper focuses on the concept of multi-path virtual concatenation as a key enabling technology to support the requirements of spectrum bandwidth of link mapping in the process of virtual network embedding (VNE). A dynamic VNE_MP algorithm for distributed data centers inter-connecting is proposed. Based on the multi-path virtual concatenation mechanisms, a virtual link is split into multiple smaller sub-streams and carried on multiple paths. The object for this algorithm is to maximize the spectrum utilization and request accept ratio under the constraint of different delay constraint between splitting paths.