Research And Design Of High-speed Railway Coverage Scheme For TD-LTE Network

With the continuous updating of communication technology and the continuous development of China's 3G and 4G networks,China's network construction is also developing rapidly.The current 4G network has become the mainstream communication technology in China.Under the background of continuous development of communication technology,higher requirements are put forward for the coverage of China's high-speed rail network.At present,China's high-speed railway is constantly accelerating construction.At present,China's high-speed railways operate safely for 19,000 kilometers.People are used to choosing high-speed rails in a convenient way.In the limited space of high-speed rail,a good network will improve people's experience.LTE network features high spectrum,low latency,and large bandwidth.Therefore,LTE network coverage is the first choice among the entire high-speed rail network coverage,but the high-speed rail network coverage also has its own characteristics.The high-speed rail itself runs extremely fast,and the network environment changes complexly,which puts high requirements on the high-speed rail network coverage.In the context of China's good high-speed rail network construction,this thesis focuses on the high-speed rail LTE network coverage scheme,providing users with high-bandwidth and higher-speed communication services,while meeting the needs of customers mobile office anytime,anywhere,to achieve passenger high-speed Internet access and high-speed rail travel.Based on the above background,this thesis designs the tunnel scheme of Nanguang high-speed railway with the actual situation of Zhaoqing section of Nanguang high-speed railway.At the same time,it puts forward the design method of LTE network coverage of Guonan Guanggao Zhaoqing section.First,the first chapter introduces the high-speed rail.The significance of network coverage and the research status at home and abroad introduces the main contents of this research.The second chapter introduces the key issues of high-speed railway LTE network coverage,including penetration loss analysis and Doppler frequency shift analysis and frequent cell switching.The analysis of the three problems,the third chapter of this thesis introduces the main content of TD-LTE coverage technology,respectively introduces the different modes of high-speed railway networking including co-frequency networking and different-frequency networking,and simultaneously for high-speed rail TD-LTE the network planning was studied,and the related principles of high-speed rail base station coverage were introduced.In the fourth chapter,the high-speed rail communication network of the Nanning high-speed rail Zhaoqing section was planned and designed,and the high-speed rail network plan and high-speed rail coverage plan of the railway section were proposed.Parameter setting was carried out to analyze the sub-scenario coverage problem in special scenes.In the fifth chapter of this thesis,the network of Nanguang High-speed Railway Cover scheme was simulated,and finally summarized.