Research On Key Technologies Of Application-driven Virtual Network Slicing Calculation And Maintenance

With the development of the Internet,applications are demanding more and more rigorous and diverse demands on network quality.To this end,the Next Generation Mobile Networks(NGMN)proposed the concept of network slicing,which aims to use NFV/SDN and other technologies to divide the physical network into logical slices to meet different QoS(Quality of Service)requirements.At present,most of the researches on network slicing technology in academia and industry focused on telecom operation network,little work has been put on data center interconnect network.Multi-Cloud Data Center Interconnect(DCI)network has the characteristics of large size and strong volatility.Compared with the telecom operation network,it is more difficult to perform network slice calculation and maintenance.This thesis studies the network slice computing and maintenance technology in Multi-Cloud Data Center Interconnect(DCI).The main work is listed as follows:(1)The concept and related technology of network slicing were introduced.Through the research of the existing literature,the research background and key issues involved in network slicing technology were summarized and analyzed.(2)According to the characteristics of the Multi-Cloud DCI network,a set of application driven network slice calculation and network slice maintenance methods were designed.(3)Based on the existing SDWAN system(POCO)of our team,the network slice automatic planning system is designed and developed to integrate the network slicing calculation and maintenance function,the automated deployment system and multi-cloud management system.-(4)In the Multi-Cloud DCI network,the network slice calculation function,network slice maintenance function and network slice automatic planning system designed and implemented in this thesis were tested in detail to verify the correctness of the operation results and the system operation efficiency.