移动台异常“隐性分离”探析

The Analysis of Mobile Station Abnormal Implicit Detach

GSM系统运用“隐性分离”处理机制可以提高资源利用率，减少无效寻呼，降低系统负荷。但是，移动台在正常开机并显示有网络信号的情况下，也会因各种原因导致移动台出现异常隐性分离，表现为VLR中用户状态标识为“IMSI分离”。当该用户被寻呼，系统则提示主叫“您謦蔓咛用户已关机”。本文即对此类问题进行探讨，分析了移动台异常“隐性分离”的主要原因．并提出了解决办法。

In applying lmplieit Detach processing mechanism, GSM can raise the efficiency, reduce invalid calls and lower the system burden. But when mobile station is at switching on anti indicates the network signal normally, because of various reasons, subscriber status in the VLR some- times indicates ＂IMSI detach＂, at the same time the visitor is informed ＂sorry, the subscriber you dialed is power off. The case is called abnormal Implicit Detach. On this kind of problem, this text analyzes the main reasons of Implicit Detach and puts forward the solution.