VoLTE网络分组域设备容灾技术研究

Research on disaster recovery technology of EPC equipments in Vo LTE network

针对EPC网络中MME和SGW设备故障时VoLTE业务中断的问题,研究GTP链路故障检测机制、MME和SGW的实时容灾技术,形成MME和SGW的VoLTE主叫和被叫业务容灾方案,并提出各个容灾方案的部署策略,总结部署效果。实际应用表明容灾方案能够实现在MME和SGW设备故障时,将VoLTE业务实时倒换至其他正常运行的设备上,用户对故障无感知,实现了VoLTE业务不受影响的目标。

To solve the problem of VoLTE service interruption during breakdown of MME and SGW equipment in EPC network, technologies of GTP path failure detection and MME/SGW disaster recovery are researched. Disaster recovery schemes of mobile o- riginate/mobile terminated VoLTE calls are formed. Deployment policy of each scheme is proposed and actual deployment effect is summarized. The result shows that VoLTE service could be seamless handover to other equipments in normal status during break-down of MME and SGW equipment, and users are not aware of the breakdown, which proves that the goal of the disaster recovery scheme is realized.