Gsm Wireless Network Optimization For High-Speed Railway

With the development of city economy, railway transportation plays a more and more important role which assume increasing passenger transport task. As Beijing and Shanghai are direct-controlled municipality and especially big cities, the Beijing-Shanghai railway has been in the overload operation and limited transportation state. The Beijing-Shanghai railway transportation has become the bottleneck between the two cities’ coordinated economic and social development. For this reason, the government approved the construction of Beijing-Shanghai high speed railway line for passenger transport, namely the Beijing-Shanghai high-speed railway. Different from the general wireless environment, the high-speed railway moves in very high speed. When the mobile phone user communicates, due to the high speed mobile in the process of fast fading, Doppler effect, the material on the wireless signal attenuation and less of main coverage cell and so on, the phenomenon such as switching confusion, failing to connect and call dropping happens frequently. Through the dedicate network construction, parameter adjustment method for optimizing wireless network, the customer perception will be improved.This paper analyzes GSM network. First elaborated the high speed railway and the wireless network optimization the necessity as well as the coverage scheme of overall train of thought and cover scale. The middle part of the Beijing-Shanghai high-speed rail network coverage of the analysis of the current situation puts forward the concrete solution scheme. Including network built before the grand station temporary adjustment, dedicated cell application fast handover algorithm, network base station location principle, antenna selection, and the network construction in the process of doing the work stage of the optimization results summary. Finally on the network to complete construction of the wireless network coverage has made a summary, and the subsequent optimization idea, and recorded the optimization process encountered several small case.The author has participated in the Beijing-Shanghai high-speed rail Tianjin section of GSM wireless network optimization work, combining with the actual working conditions, the work of the specific problems encountered in the analysis, summarized the high-speed railway GSM wireless network optimization processing method and the overall train of thought. In a wireless network optimization work, only based on the basic principle, has the analysis question method, summarizes the processing question method, can effectively solve a variety of problems in network.