摘要
LPWA技术具有广覆盖、低功耗和低成本特点,非常适合需要远距离传输、数据量较小、电池续航时间长且成本敏感的物联网应用。当前,LPWA技术主要分为两类:基于非授权频谱的专利技术,如LoRa、Siafox、RPMA;基于授权频谱的蜂窝技术,如NB-IoT、EC-GSM、eMTC等。介绍这些主流技术,并对其覆盖能力、网络容量、功耗情况、模组成本、产业支持及成熟度进行比较分析,最后给出应用场景建议。
LPWA（Low Power Wide Area） technology, with the characteristics of wide coverage, low power-consumption and low cost, is quite It is very suitable for IoT（Internet of Things） business that requires long-distance transmission, small-quantity of data, long battery-life, and cost sensitivness. Currently, LPWA technology is mainly divided into two categories, that is, patent technology based on unlicensed spectrum, such as LoRa, Siafox and RPMA, and the authorized spectrum-based cellular technologies, such as NB-IoT, EC-GSM, eMTC, etc.. These main technologies are described, and their coverage capacity, network capacity, power consumption, module cost, industry support and maturity are compared and analyzed. Finally, the suggestions of application scenarios are proposed.
出处
《通信技术》
2017年第8期1747-1751,共5页
Communications Technology
