Research On Cdn System For Power Broadband Service

With the deepening of the marketization of the power industry,China’s power industry is facing unprecedented challenges and opportunities.Building a more secure,reliable,fast and economic power information communication network has become a basic guarantee for the safe and reliable operation of the power industry.At present,the electric power communication network is facing the problem of large capacity data access for broadband services,for example,a unified portal distribution,dynamic content,video streaming data,and large file transmission.Because of the growth of broadband services,large amount of user access,and uneven distribution of the network,the new communication technology needs to be introduced to solve the problems faced by the current power information and communication network.Modern Internet uses intelligent DNS,load balancing,content distribution management and other key technologies in CDN to achieve the goal of accelerating and optimizing the Internet.Drawing on the solution of the Internet,the problem faced by the power information communication network can be solved perfectly by building the power CDN system.The power CDN system can not only improve the office efficiency by optimizing the power network,but also improve the service quality by improving the response speed of users accessing the websites in the power system.This paper has studied the optimization of the power information communication network based on the technical advantages of CDN.The main research work of this paper is as follows:Firstly,the types of broadband service in power information and communication network are studied and analyzed.Different acceleration strategies based on CDN are designed for different broadband services whose demands for power information and communication network are different.Secondly,after the study of key technology of the power CDN system,the HTTP service based on CDN is designed,which can realize the acceleration on the web,streaming media and other files.The method of load balancing based on DNS is studied,which can match the system and balance the global flow.After the research on network transmission optimization and congestion avoidance algorithm,a more appropriate file preloading method is designed for power CDN system.Thirdly,power CDN experimental bed network architecture has been designed and built,and the deployment of central and edge nodes has been studied.After the deployment,the debugging work of the system is conducted to ensure that the equipment can be connected to the system.The performance of the power CDN system is tested and the test data is analyzed and processed.Test results has shown that the power CDN system can improve the performance of the power information communication network well,and provide more powerful and perfect application services for the acceleration and optimization of the power information and communication network.