Performance Analysis of High Speed Rail Wireless Communication Network

GSM-R (Global System for Mobile Communications-Rail) is employed as the main channel to transfer safety data in high speed rail control system. Its reliability directly affects train safety. In the analysis of two different GSM-R redundant networks, we use the Alta Rica language and Markov Chain in modeling. Combined with related data, system reliability and availability are calculated through simulations respectively. Simulation results: co-sited network reliability is higher than intercross network´s due to differences of redundant network structures and handoff rates, co-sited network availability is lower than intercross network due to co-sited network common failure factor. Based on these conclusions, suggestions are: the co-sited network should be used in key parts which demand high reliability in short time while the intercross network should be used in most parts along the rails.