基于道路测试大数据的TD-LTE影子邻区优化方法

doi:10.11959/j.issn.1000-0801.2016133

Abstract

Abstract:

CSFB has been adopted by many terminal manufacturers as one of the LTE voice solution. Restricted by CSFB mechanism，there exists one kind of GSM neighbor cell which is referred as shadow neighbor cell. Even without neighbor relations configured，shadow neighbor could lead UE（user equipment）to fall back successfully due to itsultra-long coverage and strong Rx level，and that would probably causes problems like dropped calls. Based on large data of road test and network of China Mobile Hangzhou Branch，the existence of shadow neighbor cell was pointed out，an optimization method of TD-LTE shadow neighbor cell was proposed，the hidden shadow neighbor cells were dug out，and they were eliminated by adjustments of antenna and frequency. Experimental results show that the method proposedis practical，effective and also worthy promotion.

Key words: CSFB, shadow neighbor cell, ultra-long coverage, same frequency

Zhechao ZHANG,Keke CHEN,Maojian LUO. Optimization of TD-LTE shadow neighbor cells based on big data of road test[J]. Telecommunications Science, 2016, 32(4): 146-151.

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[1]	3GPP. Circuit switched（CS） fallback in evolved packet system（EPS）：3GPP TS 23.272 v10.2.1[S].[S.l.：s.n.]， 2011.
[2]	范勇 . TD-LTE网络CSFB精准回落研究[J]. 移动通信， 2015，39（2）：58-62. FAN Y . Researchon precise fallback of CSFB for TD-LTE network[J]. Mobile Communications， 2015，39（2）：58-62.
[3]	李铁峰，陈孟奇，倪岳峰，等. LTE系统CSFB邻区及频点规划算法[J]. 中国新通信， 2015（13）：37-38. LI T F ， CHEN M Q ， NI Y F ， et al. Neighbor cells and frequency planning algorithm of CSFB for TD-LTE system[J]. China New Telecommunications， 2015（13）：37-38.
[4]	张士聪，王科钻，吴剑平，等. 基于扫频的CSFB邻区配置优化：LTE网络创新研讨会论文集[C]. 广州：移动通信杂志社， 2015. ZHANG S C ， WANG K Z ， WU J P ， et al. The optimization of CSFB neighbor cells configuration based on frequency sweeping：Proceedings of LTE network innovation seminar[C]. Guangzhou： Mobile Communication Magazine， 2015.
[5]	张少鸿，陈涛 . 基于四网协同的邻区优化核查系统研究[J]. 中国新通信， 2015（4）：114-115. ZHANG S H ， CHEN T . Research on neighbor cells optimization based on four networkscollaboration[J]. China New Telecommunications， 2015（4）：114-115.
[6]	马逢时，周喡，刘传冰 . 六西格玛管理统计指南[M]. 北京：中国人民大学出版社， 2013. MA F S ， ZHOU W ， LIU C B . Six sigma management[M]. Beijing： China Renmin University Press， 2013.

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均值左右标准差范围	对称区域内置信概率	对称区域外置信概率/ppm
±1σ	68.27%	317 300
±2σ	95.45%	45 500
±3σ	99.73%	2 700
±4σ	99.993 7%	53
±5σ	99.999 943%	0.57
±6σ	99.999 999 8%	0.002

试验	优化前后	GSM上行语音质量0～5级占比	GSM下行语音质量0～5级占比	GSM掉话率	GSM TA 0～2的测量报告占比	CSFB回落成功率
试验1	优化前	99.40%	99.40%	0.16%	94.78%	98.44%
	优化后	99.57%	99.45%	0.14%	95.54%	98.65%
	幅度	0.17%	0.05%	-0.02%	0.76%	0.21%
	效果	提升	提升	提升	提升	提升
试验2	优化前	99.33%	99.39%	0.14%	91.99%	97.83%
	优化后	99.42%	99.43%	0.11%	93.29%	98.20%
	幅度	0.09%	0.04%	-0.03%	1.3%	0.37%
	效果	提升	提升	提升	提升	提升

Optimization of TD-LTE shadow neighbor cells based on big data of road test

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