| Within the rapid development of China’s economy, the convenience demand of travel and communication is increasing in the people..Furthermore, the completed and operation of our high-speed railway also present the demand for convenient travel. However, Doppler frequency shift, level fast fading, rapidly changing of wireless environment, combined with high-speed railway penetration loss closed compartment all appear in the high-speed running state of the high-speed railway. All of these become the challenges for the traditional coverage of the GSM network.This report investigates the GSM network in Tianjin section of Beijing-Tianjin high-speed railway as a specimen. First of all, the report Introduces the characteristicthe of radio-wave propagation.Second,the report introduces the basic structure and commonly used optimization method. In the last part,report starts from the special nature of the wireless environment of the high-speed railway. The challenges faced by the GSM network coverage, network capacity, neighborhood and parameter settings, frequency configuration. Subsequently, the report introduces that the Huawei DBS3900distributed base station form the private network to cover a high-speed railway, private network coverage of the Beijing-Tianjin high-speed railway, based on the results of the above report analysis. Additionally, the report presents the optimal solutions that are given in terms of network coverage, network capacity, neighborhood and parameter settings, frequency configuration. Improve the quality of the private network of high-speed railway Beijing-Tianjin high-speed railway GSM network operators, and optimize the effect of validated.The report provides that verify the effect of the private network optimization of the Beijing-Tianjin high-speed railway has reached the intended purpose. These accumulated valuable experiences and technology application laid a solid foundation for the other high-speed railway project in Tianjin territory GSM network optimization. |
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