Research On Traffic Model And Target Network Architecture Of Local Transport Network

Transport network is the basic network that carries all businesses,and is the core competency of operators.In the new situation,the transport network must change the passive construction mode driven by business requirement,and establish a traffic prediction model voluntarily.In this paper,through the network status analysis,business prediction,new technology and many other considerations,through the establishment of various business traffic calculation model,and strive to build a "large bandwidth,low delay,high reliability,easy operation and maintenance" of the new generation of transmission network.Firstly,based on the current situation of a local transport network,based on SDH,PTN,OTN,PON and other transmission systems,we find the problems and short boards in the network.It provides data support for subsequent network optimization,demand analysis and prediction,and target network.After that,the paper also analyzes the requirement of local transport network related business.The business requirement are divided into four parts: wireless,family broadband,group customers and data centers,and the business requirement are preliminarily measured in the near and mid-term.The evolution of network technology such as OTN,PTN and PON provides the basis for the determination of the target network.This paper studies the development goals and target network architecture of local transport network.A target transmission network with "large bandwidth,low delay,high reliability and easy operation" is constructed,and the overall framework evolution plan of the target network is drawn up in the short,medium and long term according to the maturity of PTN,OTN and PON technology.Finally,the paper studies the flow calculation model of the local transport network,and gives the solution to the target network.Three layers of progressive MCD analysis(Microteaching microgrid,Convergence convergence zone,Distribution convergence zone),and "micro grid business convergence zone-convergence zone" are used to measure the flow rate of PTN,OTN and PON networks respectively.Taking a certain area of actual business convergence as an example,the derivation process of network construction demand is explained in detail.According to the result of the flow calculation,three different networks of PTN,OTN and PON are divided,and the demand of network equipment is calculated in the near,medium and long term,and the network evolution plan is made.It ensures the high degree of consistency between the target network construction and the actual business requirement,and the smoothness of the implementation.