Global resource allocation mechanism based on software-defined of TWDM-PON

For lack of global centralized control and flexible allocation of the inter-TWDM-PONs network resource, the architecture of the software-defined optical access network is designed and a novel global resource allocation mechanism with prediction is proposed. Based on the software-defined optical access network, the fuzzy neural network predicting model is utilized to reduce the interactive information delay between controller and OLT. Simultaneously, the adaptive and flexible weighting is utilized to allocate the inter-OLTs resource. Furthermore, an allocation algorithm with filling idle slots is designed to further reduce the network delay for the intra-OLT resource. Simulation results show that the proposed mechanism can optimize allocation of the different layers resource from the global network view. Also, the overall network delay is effectively reduced, and the channel utilization is improved.