为了更加准确地反映LTE(长期演进)网络的切换失败率，文章根据LTE控制面信令流程提出了一种统计LTE系统内切换失败率的实现方案。该方案是基于源基站侧的统计，根据LTE系统内切换的类型和切换失败的原因设计切换失败统计流程。该方案可以准确地统计源基站的切换失败次数和切换失败率，并最终将结果显示在OMC(运行维护中心)界面上，从而使网络运营商可以及时了解TD-LTE(分时长期演进)系统内的切换性能。

In order to reflect the switch-over failure rate of the Long Term Evolution(LTE)networks more accurately, this paper proposes an implementation scheme in accordance with their control plane signaling process. Based on the statistiics of the source eNB, it designs the statistical process of the switch-over failure in accordance with the type of the switch-over in the LTE systems and the cause of the failures. This scheme can produce an accurate statistical number of the failure and the failure rate and has them diplayed on the Operation and Maintenance Center (OMC) interface, thus enabling the network operators to know in time the switch-over performance in the TD-LTE systems.