摘要
NB-IoT是面向低速率、低成本、低功耗、广深覆盖、大连接需求的物联网业务,同时也存在重叠覆盖严重、局部覆盖空洞多、室内深度覆盖不足等问题.从NB-IoT业务特征差异出发,在探究覆盖等级、重复次数原理和作用的基础上,提出了基于业务的覆盖评估标准,并针对不同场景研究了室内升级、共天馈优化、低成本NG分裂、终端延伸等优化方案.
NB—IoT is the IoT service oriented at low—rate,low—cost,low—power consumption,wide and deep coverage,and large numbers of connection requirements.At the same time,there are also some problems such as serious overlapping coverage,coverage holes of partial region,and the insufficiency of indoor coverage.Based on the difference of characteristics of NB—loT services,the coverage level and the number of transmissions was focsed on,then the assessment criteria based on user perception of loT services was put forward.Furthermore,some ways were also proposed(such as indoor distributed system updates,optimization of common antenna-feed system,low-cost NG system split and antenna extension of terminal equipments)to optimize NB—loT network for different scenarios.
作者
郭鹏
吕芳迪
焦鹏飞
王文东
郭宝
GUO Peng;LV Fang-di;JIAO Peng-fei;WANG Wen-dong;GUO Bao(China Mobile Group Shanxi Co.,Ltd.,Taiyuan 030032,China;China Mobile Group Shanxi Co.,Ltd.,Yangquan Branch,Yangquan 045000,China)
出处
《电信工程技术与标准化》
2018年第A01期89-94,共6页
Telecom Engineering Technics and Standardization
关键词
NB-IoT
重叠覆盖
共天馈
网络延伸
NB-IoT
overlapping coverage
common antenna—feed system
antenna extension of eNode B
