Narrow Band IoT (NB-IoT) is a narrow band radio technology for the transmission of small amounts of data and low data rates for the Internet of Things (IoT). NB-IoT is internationally standardized and is characterized by low energy consumption, which can be covered by batteries or also with energy harvesting. The network concepts used in this context are Low Power WANs (LPWAN) and Long Range WANs (LoRaWAN). NB-IoT is also known as LTE
Cat NB1.The focus of NB-IoT is on in-house applications using low cost components with lowest power consumption. Battery life can be several years. The technology can be embedded in the GSM standard and in Long Term Evolution (LTE). Since these mobile networks, unlike WLANs, operate at frequencies in the sub-GHz range, the radio waves can penetrate buildings better. Embedding NB-IoT technology in cellular technology is better anyway, as cellular networks are not optimized for transmitting small amounts of data and low data rates, and would therefore require too much energy. The transmission technology of NB-IoT works bidirectionally in duplex
.Narrow band IoT can be used in smart cities, smart homes, smart grids and in many other applications. In Smart City, it can provide infrastructure information to city dwellers, support traffic management, facilitate parking lot locators, and help save energy in public lighting
. In the smart home, it is about optimizing energy costs inwhich household appliances and lighting are integrated, alarm systems
, and in the smart grid, it is about monitoring and controlling energy supply, storage and use. A similar LoRaWAN concept is being pursued by SigFox, which is not standardized internationally.