传统蜂窝网对NB-IoT物联网性能的影响研究

Effect of Traditional Cellular Network on NB-IoT Performance

从分析NB-IoT物联网技术开始,介绍了NB-IoT系统的物理层以及与其他系统的共存情况、介绍了LTE系统和GSM系统,以及分析了它们对NB-IoT物联网系统影响研究必要性。主要研究了LTE系统对NB-IoT物联网系统的影响,分为stand-alone、guard-band和in-band三种场景,分析了吞吐量损失情况和SINR损失情况;研究了GSM系统对NB-IoT物联网系统的影响,同样计算了吞吐量损失和SINR损失情况。通过以上研究表明;传统蜂窝网对NB-IoT物联网系统的影响很小。

Starting from the analysis of NB-IoT technology,the physical layer of NB-IoT system and its coexistence with other systems are introduced,LTE system and GSM system described,and the research necessity of their effect on NB-IoT system also analyzed.Moreover,the effect of LTE system on the NB-IoT system is principally explored.Firstly,the throughput loss and SINR loss are analyzed in three scenarios:stand-alone,guard-band,and in-band.Then,the effect of GSM system on NB-IoT system is discussed,and the throughput loss and SINR loss also calculated.Finally,the application prospect of NB-IoT in the 5G era is forecasted.The above discussion indicates that the traditional cellular network has little effect on NB-IoT system.