摘 要:本文首先介绍了NB-IoT 的技术特点及覆盖等级;然后具体介绍了NB-IoT 物理层重传的处理过程,分别从NPUSCH 和NPUSDH 两个不同信道的物理层资源映射举例说明;最后给出在相同参数配置下不同重传次数仿真结果,说明重传对于NB-IOT 覆盖性能的影响。
关键词:NB-IoT;覆盖等级;重传
中图分类号:TN929.5 文献标识码:A 文章编号:2096-4706(2018)04-0181-04
Study on Retransmission Performance of NB-IoT
YANG Bo
(Jingxin Communication Technology Co.,Ltd.,Guangzhou 510663,China)
Abstract:This paper first introduces the technical features and coverage level of NB-IoT,and then introduces the processing process of NB-IoT physical layer retransmission,and illustrates the physical layer resource mapping from two different channels of NPUSCH and NPUSDH respectively. Finally,simulation results of different retransmission times under the same parameter configuration are given to illustrate the effect of retransmission on NB-IOT coverage performance.
Keywords:NB-IoT;coverage level;retransmission
参考文献:
[1] 3GPP TS 36.101 User Equipment(UE)radio transmission and reception(Release 13).
[2] 3GPP TS 36.211 Physical channels and modulation(Release13).
[3] 3GPP TS 36.212 Multiplexing and channel coding(Release13).
[4] 3GPP TS 36.213 Physical layer procedures(Release 13).
[5] 戴博,袁戈非,余媛芳. 窄带物联网(NB-IoT)标准与关键技术 [M]. 北京:人民邮电出版社,2016.
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作者简介:杨波(1978-),男,广东人,京信通信技术(广州)有限公司集团研究院院长,研究方向:无线通信技术。