Research On 5g Bearing Scheme And Significant Technology

In recent years,with the rapid development of digital information technology,the Internet of things,VR,industrial Internet and other new data services show a large-scale growth trend.Driven by this trend,operators require 5G carrier network to have the functions of large transmission capacity,ultra-long transmission distance,flexible and efficient networking,low equipment power consumption,low construction cost and intelligent management and control.the 5G bearer network will evolve in the direction of higher transmission rate,balanced configuration of network bearer and service flow,efficient allocation of network resources,support for many types of services,separation of forwarding and control functions,and highly scalable and reconfigurable parts of devices.In order to achieve these goals as soon as possible and adapt to the development trend of the network,there is an urgent need for more in-depth study and research on the key technologies in the 5G bearer network.Based on many years' working experience of bearer network,this paper analyzes the key technologies and bearer schemes of 5G bearer network.The main contents are as follows:(1)firstly,the network architecture of 5G bearer network is analyzed.It mainly includes three parts: forwarding surface architecture,collaborative management and control architecture and high-precision synchronous network.Then it explains the technical challenges and technical requirements in the construction of 5G large-capacity load-bearing network,and put forward several key technologies,such as network slicing technology,clockwise synchronization technology and network SDN technology.(2)Based on the analysis of construction cost,the fronthaul deployment mode is put forward.Based on the fronthaul bandwidth demand predicted by the model,the fronthaul bearing scheme is proposed,and the feasibility and construction cost of the scheme are analyzed,and the most cost-effective fronthaul bearing scheme is obtained.Based on the single base station configuration model and transmission network architecture model predicted single base station bearer bandwidth demand and medium return bandwidth demand,a medium return bearer scheme is proposed.At the same time,this paper put forward its technical scheme for the slicing technology of 5G network,(3)Based on the selection of networking equipment and the two-dimensionality of network construction cost,the 5G bearer network construction scheme was modeled and analyzed,and three construction schemes suitable for the current bearer network were proposed based on the analysis results.The main functions of the distribution layer,packet forwarding layer,TDM channel layer,data link layer and optical wave transmission layer are analyzed and compared,and the technical characteristics and network architecture of these three schemes are explained.On the basis of the plan,combined with the current situation of a telecommunications network in a telecommunications province,the guidelines for the construction of a 5G bearer network were compiled.(4)The research work of 5G load-bearing network is summarized,and the direction of further research work is pointed out.This paper mainly focuses on the bearer side of 5G network,and demonstrates and studies the construction of fronthaul,midhaul and backhaul networks from multiple dimensions,such as advanced technology,network bandwidth requirements,total construction cost,maneuverability and network unity.For operators to respond to the central focus on new infrastructure construction,speed up 5G applications,build efficient and high-quality 5G transmission network to provide a certain reference value and reference significance,and provide relevant ideas for operators to plan and evolve their transmission network.