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问答管理员：
待解决问题
是不是TD-LTE切换过程中的目标小区跟A3测量报告里的小区不一致导致切换失败
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提问者：小人物-sx
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提问时间：2016-8-17 16:46
在通话过程中进行切换，主叫的A3测量报告里的小区是70，而切换的时候切换目标小区是69，然后切换失败。请问是不是这两个数据不一致导致这次切换失败？
问题答案 ( 3 条 )
切换失败的原因有以下几种
1、数据问题，出现同BCCH同BSIC邻区，CGI不一致等；
2、切换参数不合理；
3、频率计划缺陷；
4、硬件故障，包括单板故障、硬件连线故换
1、数据问题，出现同BCCH同BSIC邻区，CGI不一致等；
2、切换参数不合理；
3、频率计划缺陷；
4、硬件故障，包括单板故障、硬件连线故换
for this event-A3 based handover, the target cell RSRP 69dBm is even higher than what was reported in measurement report, 70dBm, which means target cell RSRP still meets A3 entering condition, not an issue here.
Check if
1. RACH process on target cell was successful? if failed, which step?
2. MIB/SIB reading went through?
3. did security key updating come with handover process?
4. .......
post your UE log here, it would help look into the handover failure deeper
Check if
1. RACH process on target cell was successful? if failed, which step?
2. MIB/SIB reading went through?
3. did security key updating come with handover process?
4. .......
post your UE log here, it would help look into the handover failure deeper
正常情况下不会出现，测量报告上报的小区是70，而切换至小区69的情况。出现这种情况是不是因为测量报告上报质量问题呀。
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