NB-IoT网络覆盖性能评估与优化

NB-IoT network coverage performance evaluation and optimization

NB-IoT由于其功率谱密度、重传的技术特点,可实现较GSM系统20dB的覆盖增强能力,但是相应的终端芯片能力弱、单天线设置以及窄带宽设置,导致其抗干扰能力较差。本文主要阐述NB-IoT网络覆盖性能的评估及优化方法,针对现网发现的弱覆盖、重叠覆盖现象给出功率优化,异频组网以及干扰规避的解决方案。

Due to its power spectral density and retransmission technology, NB-IoT can achieve 20 d B coverage enhancement over GSM systems. However, the weak terminal chip capabilities, single-antenna configuration, and narrow bandwidth settings result in poor anti-interference capability. This article mainly describes the evaluation and optimization methods of NB-IoT network coverage performance. For the weak coverage and overlapping coverage found on the existing network, power optimization, inter-frequency networking, and interference avoidance solutions are provided.