Research On The Evolution Scheme Of 5G Transmission Network Architecture

Under the strategic background of large-scale deployment of 5G network,the rapid development of home broadband,group customers and other businesses is bound to bring significant changes to the layout of 5G transmission network,the paper will make an in-depth study of this.Based on the current situation of Inner Mongolia mobile transmission network,this paper analyzes the transmission bottlenecks that exist when it faces multiple service bearers in the 5G era,actively explores the smooth evolution of 5G transport network architecture to solve this bottleneck.After comparing the three evolutionary ideas,and combining the scenarios of urban,non-urban,tourist hotspot and other scenarios to simulate the evolution of the architecture,this paper gets a flat target network architecture based on "Backhaul network" and " Fronthaul network",provides guidance for the implementation of the next evolution of transmission network architecture.The first part,demand analysis.Analyze the influence of current network technology and business requirements on transmission network architecture.5G communication technology has new requirements in terms of bandwidth,delay,L3,fragmentation,time synchronization and control of the transmission network.None of the existing network schemes can meet the stringent requirements of 5G network on these technical indicators.With the development of technology,devices need to be replaced with new chips or even a large number of devices,and the architecture of the transmission network will change accordingly.At present,there are three feasible schemes to achieve 5G network load in technology: slicing grouping scheme,L3 OTN scheme and router scheme.Based on the analysis and prediction of business demand and the influence of technology development on the transmission network architecture,this paper analyzes and compares the three schemes based on the network status of operators.The second part,according to the comparison results and combining with the actual situation,this paper presents the transmission network architecture scheme that is most suitable for Inner Mongolia mobile company to smoothly evolve in 5G network construction.The network evolution scheme discussed in this paper is not only to adapt to the development of new technologies and businesses,but also to ensure better application experience for users and minimize the impact of network upgrade caused by technology replacement on users.At the same time,it also provides the research idea of evolution method for the future network evolution to a higher level.