Improved system behavior of communication based train control (CBTC) with random packet drops during handover under field condition

Communication based train control (CBTC) network is a data communication based automated control network that ensures safety of rail vehicles. Safe operation of automated rail vehicles is of major concern. In this network status and control command are transmitted using WLAN technology. Packet drops are inevitable in CBTC system since WLAN is not suitable for high speed data communication. In present work, analysis of random packet drops in CBTC systems during handover process is evaluated. The existing field work only shows the packet drop result under specific condition, whereas we analyze system behaviour with field parameters by varying one parameter over the range and analyzing its impact on the packet drop and other related parameters of CBTC system. Simulation results are presented and compared against existing field results under specific condition.