Design And Optimization Of High-level Indoor Wireless Communication Network Distribution System

Along with the development of growing Chinese economics, there are more and more high buildings, whose heights are increasing gradually. And the requirements of the quality of the mobile networks are also becoming higher and higher. However, due to the special nature of the wireless environment of the high-rise buildings, the customers can’t be satisfied with the quality of the high-level mobile network and complain a lot, so how to solve the quality problem of high-level network is the top priority in the mobile network coverage engineering design. Thus, it is very necessary to commence the research on the topic of high-level indoor distribution system design and optimization.This subject starts with the background of TD-SCDMA, first introduce the technical specifications and construction principles of the indoor distribution system engineering. Based on the comparison and analysis on the program of the existing distribution systems, we make an emphasis analysis on the cover of the interior of the high-rise building, and analyze the wireless environment of the high-rise building window aiming at solving the problem of the bad quality of communication at the high-rise building window which is common nowadays. On the basis of above analysis, we confirm that the edge field intensity of the high-rise building window and indoor enclosed area; At the same time, this article discuss about the mode of lift cover.Then combined with the practical project, inspect the typical high-rise community and analyze the data. Investigating the status of the TD-SCDMA network and the number of high-rise residential users and calculating the carrier frequency by Ireland (B) Table, we design part of the source and the distribution system. The design scheme is based on the principle of multi-antenna and low-power. We plan the switching area between the indoor distribution system and the outdoor macro stand, control the sending power of the indoor distribution system strictly, and prevent the signal leakage under the premise of guarantee of the coverage voltage. We also prove the feasibility of the design and give advice to gravity separation question by coverage analysis and leak analysis.Finally, focus on the typical problem of high-level indoor distribution system, switching problem and indoor leak are analyzed and given out the improved optimization scheme. In the meantime, combined the corresponding specific cases to verify the validity of the improved method by CQT fixed point testing method. Then we summarize the optimization experience of the indoor of the high-rise buildings, give advice to the high-rise switch mode, and provide a valuable experience of the more large-scale high-rise indoor distribution design and optimization design in the future.