Design Of LTE Indoor Distribution System

Currently, about 70% of the LTE traffic comes from the interior, especially the high-speed download service. Construction of indoor distribution system to solve LTE indoor coverage issue has become the core of the LTE network construction. Therefore, to the operators, it is very necessary to plan a distribution system for indoor where large amount of data generates. Indoor distribution system is an important approach to provide indoor wireless network coverage and improve the overall level of coverage and network quality. The research on the design technology of LTE indoor distribution system is of a relatively strong urgency. And it is also a powerful guidance for large scale LTE sub-chamber construction.The main contents of this paper are as follows: The MCL(Minimum Coupling Loss), as an analytical method for interference theory, is used to analyze and calculate the stray interference and block interference between LTE-FDD1.8G system, currently adopted by Jiangsu Telecom, and other systems. So the theoretical combiner isolation requirements are obtained, and some measures are proposed to avoid interference. Building model programs are analyzed by binding interference analysis results and experience in the construction works. At the same time, the LTE single and double channel-building programs in several different scenarios are introduced. Recommendations on the antenna point planning during LTE indoor distribution and the antenna port power set when combined with other systems are obtained through covering analysis. In the paper, the LTE distribution systems of single and double channel are devised by combining Jiangsu Telecom engineering practical cases, interference analysis, model building program analysis and the theoretical results of coverage analysis. And the covering simulation results verify the feasibility of the coverage design.