Narrowband IoT (also known as NB-IoT or LTE-M2) is an LPWAN technology which doesn’t operate in the licensed LTE construct. Instead, it works in one of three ways:
- In unused 200-kHz bands that have previously been used for GSM (Global System for Mobile Communications)
- On LTE base stations allocating a resource block to NB-IoT operations or in their guard bands.
Telecommunication giants such as Huawei, Ericsson, Qualcomm, and Vodafone have collectively put together this standard in conjunction with 3GPP. Huawei, Ericsson, and Qualcomm are interested in NB-IoT because it has a number of benefits.