移动通信网络的容灾技术

Redundancy Technologies for Mobile Communication Networks

随着移动通信网络的普及,用户对移动通信的服务质量要求越来越高;运营商也要求网络节点发生故障后,网络能够继续提供服务。为实现这一要求,双点甚至多点备份被逐步应用到网络中,双归属技术和IuFlex技术是其中比较成功的两种容灾方式。双归属技术是典型的双点备份,备机在主机故障后接替主机。IuFlex技术则属于多点备份,在单一交换节点故障后,其工作被交换池内其他节点接替。

With the growing popularization of mobile communication services, a growing demand for better Quality of Service （QoS） arises from the subscribers, An uninterrupted service provided with the network after a node failure is also expected from operators. To achieve this, duplex backup and even multiplex backup have been gradually introduced into the network. Among redundancy techniques, dual-home and luFlex are more successful. Dual-home is a typical duplex backup system with activation of the backup server after the host server failure, luFlex is one of the multi-backup techniques with overhead transference to other node in switching pool after single switching node failure.