Heterogeneous distribution communication network architecture based on software defined network

The present invention relates to a heterogeneous distribution communication network architecture based on a software defined network, belonging to the technical field of power grid communication. The heterogeneous distribution communication network architecture is characterized in that the idea that control information is separated from data in the software defined network is used for reference, a controller is added to a distribution communication network, a terminal access and switching process can be effectively simplified through the controller, IP remains unchanged after a terminal accesses the network, so that switching time at an IP layer can be reduced during switching of the special-shaped distribution communication network, thereby shortening network delay. The controller achieves seamless switching between routing forwarding and a wireless network, thereby improving the whole network load balance condition, and reducing network congestion. The heterogeneous distribution communication network architecture provides a feasible solution for effectively solving the problems of a coverage blindness area of the distribution communication network, convergence between a plurality of services and a heterogeneous network, and seamless switching of the heterogeneous network.