无线中继技术在TD-LTE网络中的应用分析

doi:10.11959/j.issn.1000-0801.2015121

Abstract

Abstract:

Wireless relay can solve the problems of covering blind spots，which was caused by lack of cable transmission，difficult at station site property coordination of macro base station，high-rise block. By two means of actual field test and network simulation，the coverage performance of relay was assessed comprehensively at outdoor coverage and indoor blind spots. By analyzing the distance between relay and buildings，the relationship between relay deployed position height and the interior depth coverage，relay deployment recommendations were given for solving depth coverage gaps.

Key words: relay, deep coverage, network simulation

Jiangbo Dong,Wei Liu,Yunbo Han,Hao Sun,Yanlei Chen,Nan Li. Research on Wireless Relay Application in TD-LTE Network[J]. Telecommunications Science, 2015, 31(5): 67-70.

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References 10

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参数	配置方式
测试环境	密集或典型城区环境
频率	D频段2.6 GHz，2 595～2 615 MHz，中心频点2 605 MHz
系统带宽	20 MHz
帧结构	上下行配置2 （子帧配置：DSUDDDSUDD），常规长度CP特殊子帧配置 7（DwPTS:GP:UpPTS=10:2:2）
中继类型	TD-LTE Type1带内中继，具有独立的cell ID
中继回传链路子帧配置	7（AD S MU AD MD AD S AU MD AD），A
	表示接入链路，M表示回传链路
DeNB发射功率	总功率8天线 8×5 W
中继接入天线发射功率	总功率2天线 2×5 W
中继回传天线发射功率	总功率2天线 2×500 mW

参数	配置方式
频率	D频段，2.6 GHz
传播模型	校正后的射线跟踪模型
天线模式	TM3/8自适应
额定发射功率	宏基站：46 dBm中继回传链路：30 dBm中继接入链路：40 dBm
小区负荷	50%

中继与盲区中心位置的偏离距离	关闭中继	偏离0m	偏离50 m	偏离100 m	偏离150 m	偏离200 m
中继所在位置的RSRP		（-115，-110]	（-120，-115]	（-100，-95]	（-110，-105]	（-105，-100]
室内RSRP＞-110 dBm	15.9%	94.2%	81.4%	36.1%	38%	16.3%

中继所在位置的RSRP	关闭中继	挂高20 m	挂高35 m	挂高45 m	挂高60 m
室内RSRP＞-110 dBm	15.9%	74%	79.8%	78.9%	71.7%
室内SINR＞-3 dBm	58.2%	93.6%	96.2%	94.8%	96.4%

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Research on Wireless Relay Application in TD-LTE Network

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