Design And Implementation Of Private Network Broadband Cluster System Protocol Stack Architecture Based On Td-Lte

The demand of data service from global mobile users is accelerating the commercial deployment speed of LTE. But in the long run, LTE is still in its early stage and meanwhile2G/3G technology will throw in a market dominant. Therefore,2G/3G/4G, this technology will coexist for a long time in the future5-10years. In consideration of the dispersibility of LTE frequency, and in order to meet the operators scale development and user roaming demand, terminal and chip will need to increase supported frequency band. In addition, accompanying with the synchronous development between LTE and2G/3G, the early development of LTE is given priority to covering with hot spot, so that terminal will certainly be requested to compatible backwards2G/3G technology. All above, the development of multimode terminal will be the inevitable trend of the development of future LTE.The article will study and analyse TD-LTE communications technologies, and propose a private network broadband cluster system based on TD-LTE, design the software architecture of multimode terminal system containing backward with2G/3G technology, and will also study and analyse system core protocol stack software architecture, key function modules, interfaces, business processes and key technical features, to realize a private network broadband cluster system based on TD-LTE unified of calls transmission, data transmission, and unified data service.Based on the completion of TD-LTE private network broadband cluster system protocol stack structure, interface, business process, this design also take into consideration most core technology research for high performance, easy maintenance, easy to expand, the IP TD-LTE protocol stack. The tight coupling and loose coupling method can not only effectively reduce the incidence of every module in the system, but also ensure its relative independence, and improve the efficiency of data processing software system. In the aspect of dealing with the agreement, it can be more flexible by cutting protocol stack software system into pieces based on their function. The article will research on all above key technologies, and analyze several different scenes, also propose some appropriate technology methods and solutions.The private network broadband cluster system multimode terminal based on TD-LTE this article proposes, have now been adopted by China Mobile, and the standards of multimode terminal general technical requirement and equipment also become enterprise standards.