Research On Key Technologies Of Wireless Access In TD-LTE Systems

With the construction and improvement of China's TD-LTE network and the gradual start-up of fiercely competitive TD-LTE network,the quality of TD-LTE network is facing unprecedented challenges.To build a high user satisfaction boutique network,we must have good wireless network optimization technology.Especially in terminal initial access network,access optimization technology is more important.For the TD-LTE wireless communication network,access is the basis of the whole network operation,and the success rate of access is an important index to evaluate the performance of the network.Improving the access success rate is one of the important tasks of TD-LTE network optimization.This paper focuses on the research of TD-LTE wireless access optimization technology,which mainly involves the optimization process of TD-LTE wireless access and the key technology of TD-LTE.Then,the optimization analysis of TD-LTE wireless access is carried out in four directions: cell search failure analysis,random access failure analysis,authentication security failure analysis and E-RAB establishment failure analysis.The application of research results to the actual network improves the quality of wireless network access.The following are the main contents:Firstly,through the research of OFDM technology and MIMO technology in TD-LTE wireless network,the specific use method of related technology in TD-LTE wireless network access optimization is proposed.At the same time,it has become the necessary theoretical basis for TD-LTE wireless network access optimization research.Then,through the analysis and research of the technical characteristics of TD-LTE system,the method flow of TD-LTE wireless network access optimization is proposed.And from the four directions of cell search failure,random access failure,authentication failure,E-RAB establishment failure to launch a detailed analysis and research.Finally,the research results of TD-LTE wireless access optimization technology are applied to the existing network.Combining with seven different types of optimization cases of actual TD-LTE access,specific optimization schemes are proposed,and field tests are carried out to verify the good perception of user experience brought by TD-LTE wireless access optimization.