Interference Analysis And Network Optimization Of GSM Indoor Distribution Systems

Investigation data shows, at present, already 70% mobile communication traffic was from indoor system. The indoor electromagnetic propagation environment is much more complex than the outdoor. In order to guarantee the performance of the indoor network, and improve the user experience, the interference analysis and network optimization aiming at indoor distribution system, is of great significance to the improvement of the mobile operators’ service competitiveness.Firstly, according to the different scenes of indoor distribution system, interference factors of indoor distribution system were studied. Through the test of the inter-modulation index of repeater and passive devices, analysis of the network influence by the active devices and passive components introduced in the distribution system, find out the causes of interference and optimization scheme. Then, analyze the network parameters setting and determine the cause of positioning base station side interferences through TEMS test. Finally, implementation of network optimization of GSM indoor distribution system, the solution and process should be presented though the analysis of the common interference in China Mobile GSM network indoor distribution system.The research and analysis method of the indoor distribution system in the paper, has been in the promotion of the use in our company at present. The analysis of the indoor distribution system interference through the combination way of the software and hardware, can improve the efficiency of the fault location in daily work of the network optimization staff, saving the cost of manpower and material resources, and providing a certain basis and guidance to company’s indoor distribution system optimization and main tenance work.