Study on Key Technologies of Distribution Communication Network Virtualization Based on Overlay Network

This paper presents a virtualization scheme of distribution communication network based on cascade mode and the key technologies to realize real-time, reliable and synchronization. Firstly, this paper describes the technical characteristics of network virtualization technology and the technical application advantages for complex and mixed distribution communication network structure. Secondly, this paper proposes a virtualization scheme of distribution communication network based on cascade mode. By defining new functional network elements between service network and bearer network, the virtual network layer superimposed on the bearing network is constructed, which shields the differences of the underlying transmission, and realizes the integration of heterogeneous networks. Finally, the paper puts forward a universal network proxy solution and its key technologies. Through the real-time dynamic adaptation of physical transmission channels, the virtual network is constructed, which can realize the flexible allocation of resources, improve the utilization of resources, and meet the real-time, reliable and synchronous requirements of services.