GSM-R网络乒乓切换优化

Optimization of Ping-pong Switching in GSM-R Network

高速运行的列车对GSM-R网络的服务质量和可靠性提出严格的要求,越区切换是保障列车运行中不间断通信的基础。切换场强覆盖不合理、参数设置不当都会导致列车在小区间快速切换时产生乒乓切换,导致网络服务质量下降,严重时甚至会产生通信中断。结合瓦日铁路典型的乒乓切换案例,找出产生乒乓切换的原因,提出相应的解决方案进行网络优化。对解决GSM-R网络乒乓切换问题,提升GSM-R网络质量提供可靠的理论和实践依据。

High-speed trains need strict requirements on service quality and reliability of GSM-R network.Handover is the basis for ensuring uninterrupted communication during train operation.Unreasonable field strength coverage and improper parameter setting will lead to Ping-pong switching when the train switches rapidly between cells,resulting in degradation of network service quality and even communication interruption in serious cases.Based on the typical Ping-pong switching cases of Watang-Rizhao Railway,this paper finds out the reasons of Ping-pong switching and puts forward the corresponding solutions for network optimization.It provides a reliable theoretical and practical basis to improve the quality of GSM-R network for solving the Ping-pong switching problem of GSM-R network.