Research And Implementation On TD-LTE Broadband In Countryside

In recent years,with the development of science and technology and the popularization of 4G network,the network is more and more indispensable for us.Our country has much agricultural population,with the development of economy and informatization,more and more rural users want to obtain information and entertainment on the Internet.Because the infrastructure resources remain insufficient in rural areas,the liability of wired coverage is weak,the access cost of rural areas is too high,how to create an accepted broadband by rural users has become an urgent problem.This thesis focuses on the research of rural broadband products of TD-LTE,which is in order to meet the need of rural users,and provide cheaper broadband services.This thesis mainly expounds that the TD-LTE base station can be used effectively by the TD-LTE rural broadband,and taking advantage of the high bandwidth,low latency and always online of the 4G technology,rural broadband service can be promoted through the way of the TD-LTE + Customer Premise Equipment(CPE).This thesis introduces the related technology research of TD-LTE rural broadband products,including the concept of LTE,the technical feature of LTE system,the change of network,the development of rural broadband technology;the implementation and terminal design of rural broadband CPE,including feasibility analysis and terminal theoretical basis of rural broadband CPE,the technical implementation of CPE home gateway,the implementation principle and link algorithm of TD-LTE + CPE,and the result of link analysis under concrete scene.Intensive research has been done about terminal design and implementation the CPE,CPE terminal location,performance index,main function,business process and implementation.This thesis mainly introduces how to switch 4G network to broadband,through simply rebuilding core network,introducing broadband network elements BRAS,meanwhile,L2 TP is integrated on CPE,which realizes the PPPoE dialing and makes the business process and GPON broadband basically identical.Because it is geared to the needs of rural users,4G signals should be switched into general WIFI,CPE terminal is particularly important.In this thesis,the study of CPE terminal supports IP65 dustproof and waterproof,protection from lightning,high and low temperature.the use of industrial components,increase the stability of the terminal,high-performance chip module improves the terminal performance,support hardware features such as high gain antenna,meanwhile supporting L2 TP function to achieve the same dial habits with the cable broadband,PPPoE data encapsulation and passthrough;Support multiple POE port power supply,support TR069 software functions such as network management protocol.The thesis finally analyzes the experimental and verification result of pilot rural region to verify the practicability of products.The verification result points out the rural broadband development direction in the future that the rural broadband based on TD-LTE is feasible.