Optical Layer Awareness Based Multicast Optimization Scheme in Software Defined Optical Networks

As the scale of software defined optical networks (SDON) was enlarged with increasing multicast service demands, communication quality suffers seriously from optical layer factors. Aiming to solve this problem, an Optical Layer Awareness (OLA) based multicast optimization mechanism is proposed for OpenFlow controlled SDON. The proposed approach takes full consideration about OLA model, including linear factors and non-linear ones into optical multicast controlled by OpenFlow. Therefore, the proposed scheme is able to cover nearly all optical layer factors of all optical links. It also is capable to conduct multicast optimization with better communication quality. Simulation results show that the proposed scheme achieves better performance of SDON optical multicast services in terms of delay time and bit error rate.