摘要
铁路5G专网是我国铁路新一代移动通信系统,正处于科技攻关阶段。为规范核心网组网,明确设备技术要求,确保系统服务质量符合要求,核心网容灾组网方案亟待研究。首先,在调研分析铁路需求基础上,研究提出5G-R核心网规划方案;其次,研究组网关键技术,包括设备故障检测方式、参数设置和网元容灾备份部署方式及其适用性;然后,结合网元作用和接口协议,重点研究并提出4种网元容灾备份组网方案;最后,依托研发实验室进行测试验证。试验表明,网元故障时,系统自动倒换,网元故障倒换时间与设置的故障检测时长相关,建议小于20 s。建议将来在实际应用中,综合考虑网元的平均无故障恢复时间(MTBF)、交互心跳的性能处理能力等因素,进一步优化调整。
The 5G-R system is the new generation of mobile communication system for Chinese railway,which is in Research and Development stage.In order to standardize the networking,define the technical requirements of equipment and ensure that the Quality of Service meet the requirements,the disaster recovery networking scheme needs to be solved urgently.Firstly,on the basis of investigating the needs of the railway,the network planning scheme for Core Network are studied and proposed;next,the key technologies are studied,including equipment failure detection methods,parameter settings,and network element disaster recovery backup deployment methods and their applicability.Then,combines with the network element roles and interface protocols,four network schemes for disaster recovery and backup of network element are mainly studied and proposed.Finally,testing and verification are conducted in the lab.The test results show that when the network element fails,the system can automatically switches.The network element fault switching time is related to the fault detection time which can be configured.It is recommended to set less than 20 seconds.During practical applications in future,further optimization and adjustment should be set for NE parameters based on the consideration of the Mean Time between Failures and the processing capability for heartbeat.
作者
石波
蔺伟
李春铎
胥昊
SHI Bo;LIN Wei;LI Chunduo;XU Hao(China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道标准设计》
北大核心
2023年第11期158-165,共8页
Railway Standard Design
基金
中国铁道科学研究院集团有限公司院基金重点课题(2021YJ107)。
关键词
铁路通信
5G专网
5G-R
核心网
网络规划
故障检测
容灾备份
railway communication
5G private network
5G-R
core network
network planning
fault detection
disaster recovery
