池黄高铁小区切换异常问题分析OA

The abnormal cell handover phenomenon was identified in the integrated commissioning and testing phase of the Chizhou-Huangshan High-speed Railway.This study adopts a multi-dimensional screening approach,encompassing a comparative analysis of different terminal modules and base station equipment,as well as simulation experiments conducted in a laboratory condition.The research findings show that a certain onboard terminal shows significant parsing exception when dealing with BSIC codes,especially when the BSIC ends with 0,where the error probabilities triggered unsuccessful handovers.The data comparison of several railway lines in China reveals that the T-module exhibits a certain probability of parsing exception in all these lines when the BSIC ends with 0.This study also proposes the solution of circumventing BSIC codes ending with 0,which can be avoided at the design stage or temporarily circumvented during the integrated commissioning period,to ensure that the operating vehicles are not affected by this module.These findings provide important guidance for the design as well as operation and maintenance of wireless communication systems for high-speed railways,emphasizing the critical role of parameter selection and equipment compatibility in ensuring system stability.