Design And Implementation Of Orchestrator Of Chengdu Mobile 5g Network Slicer

With the continuous development of network technology,the network business is more and more complex,and the network scale order is more and more chaotic.The traditional network architecture becomes more and more difficult to maintain due to the inflexibility of the underlying equipment,while the efficient management of the underlying equipment and the flexibility and efficiency of the network service deployment have become a problem in the network operation management;software defined network(SDN)and Network function Virtualization(NFV)is a research hotspot in the current industry,and is gradually considered as the main direction of the development of the next generation telecommunication network.In order to realize the optimization of mobile network architecture,it is necessary not only to summarize the existing problems in the current network,but also to summarize the advantages of SDN and other new technologies to make full use of NFV.Based on the design ideas of SDN and NFV,the architecture of mobile network is studied deeply,and the future network design ideas are defined to meet the needs of new services and applications of mobile network in the future.In this thesis,a lightweight network layout architecture is designed to support the processing of service templates,the operation and monitoring of service subjects in a graphical way.The architecture implements orchestration logic in a centralized way and performs operations such as process management and resource selection of service entities.The architecture integrates the control ability of SDN technology into network behavior and the function of NFV technology into virtual network.This system is responsible for organizing the virtual network function(VNF)in the network service,defining the supported VNF package format,designing and implementing the instance state management mode and the running process of the SDN/NFV instance,so that different virtual network functions can be described and managed in a unified way.The SDN/NFV choreography subsystem can choreograph virtual network functions,meet the needs of network choreography,and provide support for the follow-up research and verification of choreography.