The Adaptability Analysis Of Cell Reselection In GSM-R For High-speed Train

With the rapid development of high-sped railway construction, GSM-R which is the controlling platform of high-speed train has become one of the key technologies. As GPRS for data service on high-speed railway is not in use, the study on this field is the key point of current research, especially how to meet the demand of train control system with real time response and reliability in complicated geography environment and high-speed motion state.This paper analyses the data transmission reliability and handover process effected by high-speed movement which provide reference for high-speed railway network programming. Main research contents are as follows:By changing parameters of Gauss-Rician-Rayleigh channel Model and simulating the relationship between error code rate and speed in the different situations, the paper constructs analysis model in multi-channel situation and provides reference for the data transmission safeguard measures.This paper also analyses the handover time, received signal level, coverage overlap length and cell radius. By Simulating the path loss model, such as Okumura-Hata, COST—231/Walfish/Ikegami, got the relevance of Rxlev and distance between train and the base station. Meanwhile, by comparing the length of overlap and quality of service in different speed, theoretical foundation for network construction is concluded.