【摘要】：CSFB在回落過程中,選擇GSM小區(qū)是否合理對CSFB接入成功率至關(guān)重要,測試發(fā)現(xiàn),當(dāng)網(wǎng)絡(luò)以Bit Map形式下發(fā)GSM頻點(diǎn)時(shí),以i Phone5S為代表的高通芯片終端會(huì)優(yōu)先選擇最小頻點(diǎn)接入,導(dǎo)致CSFB成功率很低。通過網(wǎng)絡(luò)側(cè)修改鄰區(qū)配置,使鄰區(qū)下發(fā)方式由Bit Map變?yōu)榱斜砗?該問題得到規(guī)避,極大改善了網(wǎng)絡(luò)指標(biāo)和用戶感知。
[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.
【作者單位】： 中國移動(dòng)通信集團(tuán)福建有限公司漳州分公司;
【分類號】：TN929.532

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