Research On Coverage Optimization Of TD-LTE Indoor Distribution System

TD-LTE network is the main 4G network of China Mobile,and TD-LTE network itself faces two major challenges: high frequency band and high expectation.Users have high expectations for the TD-LTE network,which requires that the TD-LTE network can provide users with a higher data transmission rate.At present,the D/E band used is insufficient in coverage,especially in depth coverage,because of its high frequency.As far as the carrying capacity of data services is concerned,the current TD-LTE indoor distribution cell traffic accounts for a high proportion.The TD-LTE indoor distribution system is a necessary supplement to the 4G network and is playing an irreplaceable role.Indoor coverage quality is particularly important as users are more indoors.TD-LTE network optimization needs to change from outdoor indicators to indoor depth coverage.Firstly,in this thesis,the TD-LTE indoor distribution system has been introduced,including the concept of indoor distribution system,networking,antenna design,etc.Secondly,combined with a typical TD-LTE distribution system and the principle and method of room division optimization,the performance and technical index analysis of TD-LTE network in the typical TD-LTE distribution system has been given,as well as the reasons to be considered in the optimization.Thirdly,by combining with the special optimization project of Anhui Mobile Room,the problems encountered in the optimization of TD-LTE indoor distribution system are analyzed and summarized in the actual site,and the final optimization scheme of TD-LTE indoor distribution system for each site is given,which includes multi-redirection,CSFB low drop,zero traffic,frequency switching and so on.Finally,the performance of TD-LTE indoor distribution system after optimization is checked and accepted from the aspects of improving the efficiency of indoor distribution system optimization and improving the network quality of the whole network indoor distribution system.In addition,the method of constructing the quality evaluation system of TD-LTE network ha been given,and the method of locating the problem of TD-LTE indoor distribution system is formed.In this thesis,theoretical research and engineering practice are combined to Anhui Mobile TD-LTE indoor distribution system optimization.Guidance for the optimization research of TD-LTE indoor distribution system for the optimization of 4G compartments and universal applicability for discussing the optimization of 4G mobile indoor distribution system has been provided...