SDN-based heterogeneous network architecture with Multi-Controllers

This paper presents a proof-of-concept software-defined networking (SDN) based on Multi-controller for heterogeneous wireless networks, which can be helpful for researchers. There is limitation in the design of the existing architecture of the controller to manage the messages generated from the user equipment (UE). Our proposed architecture has more flexible and scalable through the hierarchical structure of Multi-controller and the loosely-coupled heterogeneous networks. In this paper we present the procedure of handover scenario using proposed architecture.