Iphone5S在CSFB时频点选择问题及解决方案
发布时间：2018-11-11 20:30
【摘要】：CSFB在回落过程中,选择GSM小区是否合理对CSFB接入成功率至关重要,测试发现,当网络以Bit Map形式下发GSM频点时,以i Phone5S为代表的高通芯片终端会优先选择最小频点接入,导致CSFB成功率很低。通过网络侧修改邻区配置,使邻区下发方式由Bit Map变为列表后,该问题得到规避,极大改善了网络指标和用户感知。
[Abstract]:In the process of CSFB falling down, it is very important to choose whether the GSM cell is reasonable for the success rate of CSFB access. It is found that when the network sends the GSM frequency in the form of Bit Map, the Qualcomm chip terminal represented by I Phone5S will give priority to the minimum frequency access. The success rate of CSFB is very low. By modifying the configuration of the adjacent area on the network side, the problem can be avoided by changing the distribution mode of the neighborhood from Bit Map to list, which greatly improves the network index and user perception.
【作者单位】： 中国移动通信集团福建有限公司漳州分公司;
【分类号】：TN929.532
[Abstract]:In the process of CSFB falling down, it is very important to choose whether the GSM cell is reasonable for the success rate of CSFB access. It is found that when the network sends the GSM frequency in the form of Bit Map, the Qualcomm chip terminal represented by I Phone5S will give priority to the minimum frequency access. The success rate of CSFB is very low. By modifying the configuration of the adjacent area on the network side, the problem can be avoided by changing the distribution mode of the neighborhood from Bit Map to list, which greatly improves the network index and user perception.
【作者单位】： 中国移动通信集团福建有限公司漳州分公司;
【分类号】：TN929.532
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