Planning And Design Of Zhejiang Unicom's Bearer Network For 5G

5G will arrive,load first.Modern mobile communication,marked by the first generation of mobile communication business in the 1980s,has experienced four generations of technological evolution and development,and has been profoundly affecting and changing people's lives.At present,the wide application of video services drives the normalization and multiple growth of traffic.The demand of Internet of things,information physical fusion system,machine communication and other fields makes the fifth generation mobile communication system emerge as the times require.Carrier network is the basis of end-to-end transmission of mobile communication.It has become the focus of operators to build efficient and cost-effective carrier network to meet the needs of 5G differentiated services.High bandwidth,large connection,low delay and high reliability are the main characteristics of 5G network,and the construction of bearer network will face great challenges and opportunities.Zhejiang Unicom actively promotes 5G construction and leads the development of 5G industry.Starting from practical work,this paper analyzes the demand and key factors of 5G bearing,analyzes the status quo and problems of transmission network technology of Zhejiang Unicom,and designs 5G bearing network in line with the application of transmission technology.In this paper,a typical area of Hz Unicom is selected to carry out 5G bearing test and effect verification,which provides a reference for the overall network construction.The general content of this paper is as follows:(1)The relationship between the mobile communication network and the transmission network and the evolution and development of the interaction between them are explained.This paper focuses on the influence of 5G network architecture on bearer network,and briefly introduces the research status of 5G bearer at home and abroad.At last,the purpose and significance of the research are described.(2)Based on the research ideas of 5G bearer network planning and design,the paper analyzes the seven aspects that have great influence on bearer,such as 5G network bandwidth,delay,reliability,network of traffic,time synchronization,etc.Based on the analysis of demand,three key factors affecting 5G bearer network are proposed,which are bearer technology,network structure and basic resources.(3)Based on the three key factors of 5G bearer,this paper comprehensively combs the status quo of service bearer positioning,transmission technology,system networking and basic resources of Zhejiang Unicom's transmission network;facing 5G bearer,it analyzes the main problems of current network technology,networking and basic resources.(4)The third level load caused by 5G network is the biggest characteristic different from the previous load.This paper analyzes the requirements and characteristics of the three-level bearer,and studies its networking and application in the back,middle and front transmission networks based on a variety of transmission technologies.After fully studying the three-level bearing technology and networking application,combined with the current situation and problems of Zhejiang Unicom's transmission network technology,three kinds of 5G bearing network schemes are designed,which are respectively based on wavelength division technology,packet technology and the combination of packet and wavelength division technology.Each design scheme describes the deployment strategy,implementation steps and networking scheme.(5)Aiming at three kinds of 5G bearer network technology solutions,this paper makes a comparative analysis from the deployment difficulty,cost,capacity and other dimensions.In order to further demonstrate the 5G bearing test and effect,a typical area of Hz Unicom is selected to verify the networking and implementation of packet technology,and analyze the cost and cost.Basic resources are very important for 5G deployment,which affects the selection of transmission system technology and networking.Combined with the existing network,the paper analyzes the 5G site concentration,and puts forward suggestions on site concentration,computer room and optical cable basic reserve.