GSM attach失败问题 [复制链接]

tony9492

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发表于 2012-2-16 00:04:42 |只看该作者 |倒序浏览

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在attach失败中，Ms发送attach request后，紧接着ms又发送detach request,造成失败，这种失败在attach中占得比例较大，而且有时候这种请求、失败比较频繁，从Gb接口抓到的信令如下：
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931224 14:15:28'767 0 BSC-->SGSN [GMMSM]Attach request
2931390 14:15:28'787 20 BSC-->SGSN [GMMSM]Detach request
2931487 14:15:28'801 34 SGSN-->BSC [GMMSM]Detach accept
2931702 14:15:28'827 60 BSC-->SGSN [GMMSM]Attach request
2931833 14:15:28'847 80 BSC-->SGSN [GMMSM]Detach request
2931944 14:15:28'862 95 SGSN-->BSC [GMMSM]Detach accept
2942343 14:15:30'047 1280 BSC-->SGSN [GMMSM]Attach request
2942344 14:15:30'047 1280 BSC-->SGSN [GMMSM]Detach request
2942483 14:15:30'064 1297 SGSN-->BSC [GMMSM]Detach accept
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请问，如何解释这种现象，造成这种问题的原因如何解释呢？