SGSN参数对GSM-R数据业务安全性的影响研究

Research on safety of GSM-R data service by SGSN parameters

为提高铁路移动通信系统(GSM-R)数据业务核心设备通用无线分组业务支持节点(SGSN)的安全性和可靠性,在简要分析铁路GSM-R现网中分组数据协议(PDP)激活流程、SGSN设备通用无线分组业务隧道协议(GTP)版本以及PDP激活定时器的设置基础上,根据现网实际运行情况和故障案例分析,详细研究参数的处理机制,探究参数组合方案以及与其他设备的协议配合。结果表明:SGSN设备GTP版本以及PDP激活定时器的合理配置可以有效地减少SGSN与通用无线分组业务网关节点(GGSN)之间的故障,避免由于网络延时、设备间协议不匹配引起的业务影响,提高网络的安全性和稳定性。

In order to improve safety and reliability of SGSN,core equipment of global system for mobile communication for railway GSM-R data service in railway mobile communication system was studied,activation process of PDP,GTP version of SGSN equipment and setting of PDP activation timer in GSM-R network were analyzed.According to actual operation of current network and fault case analysis,processing mechanism of parameters was studied in detail,and parameter combination scheme and protocol coordination with other equipment were explored.The results show that fault between SGSN and GGSN can be effectively reduced by reasonable configuration of SGSN GTP and PDP activation timer.Avoid service impact caused by network delay and protocol mismatch between devices,and improve the safety and stability of network.