Research on Deployment Method of Service function Chain based on Network function Virtualization in Distribution communication Network

In this paper, a service function chain(SFC) deployment method based on network function virtualization(NFV) is disclosed. Based on the network function virtualization technology, this method abstracts and virtualizes devices in the distribution communication network to realize the separation of software and hardware, and abstracts power distribution service requests into service function chains, thus transforming the service request processing problem into the SFC deployment problem. Through simulation verification, the proposed method achieves the goal of minimizing the overall cost and effectively reducing the cost of processing service requests. In this case, the integer linear programming model (ILP) is solved by the computing resource and bandwidth resource balancing (CBRT) algorithm to obtain the optimal solution, and the planning is carried out according to the optimal solution, which reduces the deployment delay of SFC and improves the network reliability. It is helpful to solve the problems of equipment connection of different brands, unified network management, easy operation and maintenance, and create greater economic and social benefits.