Performance improvement of communication based high speed train control system with packet drops during handover under worst case scenario

Abstract

Safe operation of rail vehicles is a matter of concern. Communication based train control (CBTC) network is a data communication based automated control network that ensures safety of rail vehicles. In this network status and control command are transmitted using WLAN technology. It has been observed that WLAN is less successful for high speed as because of its design constrains packet drops cannot be avoided. In present work, analysis of random packet drops in CBTC systems during handover process is evaluated. Unlike the existing work that only consider packet drop formulation under specific condition, we analyze system behavior under worst case scenario by varying one parameter over the range and analyze its impact on the packet drop and other related parameters of CBTC system. Simulation results are presented and compared against existing results under specific conditions.