摘要
为了研究NB-IoT在LTE网络中的组网方案,介绍了基于LTE的NB-IoT技术特征以及典型应用场景,并根据NB-IoT的特点对3种频率部署方案进行分析,提出了4种在LTE网络中部署NB-IoT的组网方案。通过对不同组网方案进行不同场景的测试分析,结果表明以RSRP=-125d Bm作为最小电平接入门限要求,在NB-IoT、LTE站点数为1:3和1:4组网情况下,只有室外场景覆盖率可以达到99%。根据测试结果,建议在市区选择站点数为1:1的组网方案。
In order to investigate the NB-IoT networking scheme in LTE networks, NB-IoT technical features and typical application scenarios based on LTE were introduced. Three frequency deployment schemes according to NB-IoT technical features were analyzed, and four networking schemes of NB-IoT deployment were presented. Testing analyses in different scenarios for different networking schemes were carried out. Results show that the coverage of 99% only can be achieved for the outdoor scenario, when RSRP is -125dBm as the minimum level access threshold and the ratio of the site number of NB-IoT to LTE is 1：3 and 1：4. According testing results, it is recommended to select the 1 ： 1 networking scheme in the urban area.
出处
《移动通信》
2017年第6期14-18,共5页
Mobile Communications
