| 高铁WCDMA多RRU级联组网出现的问题及解决方式建议 |
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| 引用本文： | 雷鸣,林善亮,刘永芳.高铁WCDMA多RRU级联组网出现的问题及解决方式建议[J].移动通信,2014(2):3-6. |
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| 作者姓名： | 雷鸣 林善亮 刘永芳 |
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| 作者单位： | [1]中国联合网络通信有限公司湖南省分公司,湖南长沙410000 [2]北京中网华通设计咨询有限公司,北京100070 |
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| 摘 要： | 高铁WCDMA多RRU级联共小区组网虽然能够减少小区切换,但是由于多普勒效应,UE会收到两个不同频率的共小区信号,解调功能受到严重的影响,从而导致掉话,同时吞吐率急剧下降,这种现象在某些非高通芯片的WCDMA手机中特别明显。基于此,重点对多RRU级联共小区的原理以及出现的掉话问题进行分析,并提出了解决方式建议。【摘要】
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| 关 键 词： | WCDMA 多RRU级联 正负频偏 |
The Problem and Solution of Multiple RRU Cascade Networking in High-Speed Railway |
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| LEI Ming,LIN Shan-liang,LIU Yong-fang.The Problem and Solution of Multiple RRU Cascade Networking in High-Speed Railway[J].Mobile Communications,2014(2):3-6. |
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| Authors: | LEI Ming LIN Shan-liang LIU Yong-fang |
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| Affiliation: | China United Network Conununications Group Co., Ltd., Hunan Branch, Changsha 410000, China： 2. ChinaComm Design ＆＂ Consulting Co., Ltd., Beijing 100070, China |
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| Abstract: | Multiple RRU cascade networking in the same cell can reduce cell handover in high-speed railway, however. because of Doppler effect, UE may receive two signals with two different frequencies and its demodulation function is severely affected, leading to drop call and low throughput rate. These are usually emerged in some WCDMA mobile phones with non-Qualcomm chips. The theory of multiple RRU cascade networking in the same cell and drop call problems are analyzed, in addition, the advice and solutions are proposed. |
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| Keywords: | WCDMA multiple RRU cascade positive and negative frequency offset |
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