Application Of PTN Technology In Transmission Network

PTN is a sort of transmission technology based packet multiple services,Besides,it strengthens the independent control platform with packet service as the core,develops efficient broadband and supports multi-service access by enhancing transmission efficiency.All these can efficiently solve the problems that the Internet is confronted with the broadband shortage so as to make the Internet more intelligent and improve its reliability.On the basis of the topology formation of PTN transmission network and the analysis of service bearing,the paper has given the specific optimized plan for such problems like the confusing structure of the core aggregation layer in the network,network congestion,old equipment,irregular service configuration and frequent failure.Through the transformation of the core layer structure,topology loop and link expansion and normalized configuration of service,network transmission performance is greatly improved so that the network structure is more clear and traffic carrying becomes safer and more stable.On the basis of the current network optimization,group network mode with large bandwidth,high reliability,flatness and easy expansion that accords with the long-term development of business and the smooth evolution of network,should be planned.(1)The paper approaches are taken to shed light on PTN network design,network reliability design,service bearing design,so as to sum up the principle and methods about site opening and the functional test.All above methods are employed to conduct the sink reform on two turns and three bridges in terms of non-extensibility problem in LTE structure to build the safe and stable core network dedicated to LTE.Priority is given to expound 2/3/4G BTS and the load mode like MAN group customer and broadband service.In addition,based on the research on the demands of service bearing,quite a few of tasks are finished,for example,the network structure is designed,the strategy and principle bearing on mobile PTN technology network-building in Baiyin city are determined,the program about networking construction including the core layer,the aggregation layer and the access layer is designed.Additionally,great efforts are made to complete PTN network element,4G BTS,the opening service of private line service and a large area of bearing so that the specific process of topology formation of PTN transmission network and service bearing is intuitively shown.Eventually,the PTN transmission network of Baiyin city that conforms to the long-term development of service is built.(2)According to the operating condition of PTN network in Baiyin city,efforts are made to optimize and adjust network resources and network structure,which is shown in such aspects like link and equipment resources,network topology loop,structure adjustment of the core layer,network service diffluence.Through expanding bandwidth and service cut-over and increase of equipment,long and single link loop and small split by extra large loop,core layer is divided into L2 and L3,building the core network dedicated to LTE,planning OSPF domain,which makes the network structure cleare,traffic carrying becomes more stable.(3)Concerning the service interruption in the routine maintenance of PTN network,the paper has summarized a set of thorough faults solution,to precisely find the reason of network failure and solve the typical faults such as service interruption or switching faults,protection faults,the faults that network element detaches from the tube,broadcast storm faults.All these can reduce the incidence of failure to improve standardization of service configuration.(4)The paper has analyzed and discussed new technology of PTN transmission network.Such as PO channelized scheme,Software Defined Network,SPTN and the challenge for the developing of PTN transmission network.