NarrowBand IoT (NB-IoT) is a Low Power Wide Area Network (LPWAN) radio technology standard developed to enable a wide range of devices and services to be connected using cellular telecommunications bands. NB-IoT is a narrowband radio technology designed for the Internet of Things (IoT) and is one of a range of Mobile IoT (MIoT) technologies standardized by the 3rd Generation Partnership Project (3GPP). Other 3GPP IoT technologies include eMTC (enhanced Machine-Type Communication) and EC-GSM-IoT. The NB-IoT specification was frozen at Release 13 of the 3GPP specification (LTE-Advanced Pro), in June 2016.
NB-IoT focuses specifically on indoor coverage, low cost, long battery life, and enabling a large number of connected devices. The NB-IoT technology is deployed “in-band” in spectrum allocated to Long Term Evolution (LTE) – using resource blocks within a normal LTE carrier, or in the unused resource blocks within a LTE carrier’s guard-band – or “standalone” for deployments in dedicated spectrum. It is also suitable for the re-farming of GSM spectrum.
|LTE Cat 1||LTE Cat 0||LTE Cat M1(eMTC)||LTE Cat NB1(NB-IoT)||EC-GSM-IoT|
|3GPP Release||Release 8||Release 12||Release 13||Release 13||Release 13|
|Downlink Peak Rate||10 Mbit/s||1 Mbit/s||1 Mbit/s||250 kbit/s||474 kbit/s (EDGE)2 Mbit/s (EGPRS2B)|
|Uplink Peak Rate||5 Mbit/s||1 Mbit/s||1 Mbit/s||250 kbit/s (multi-tone)20 kbit/s (single-tone)||474 kbit/s (EDGE)2 Mbit/s (EGPRS2B)|
|Number of Antennas||2||1||1||1||1-2|
|Duplex Mode||Full Duplex||Full or Half Duplex||Full or Half Duplex||Half Duplex||Half Duplex|
|Device Receive Bandwidth||1.08 – 18 MHz||1.08 – 18 MHz||1.08 MHz||180 kHz||200 kHz|
|Receiver Chains||2 (MIMO)||1 (SISO)||1 (SISO)||1 (SISO)||1-2|
|Device Transmit Power||23 dBm||23 dBm||20 / 23 dBm||20 / 23 dBm||23 / 33 dBm|
- Preliminary specification (Source: 3GPP)
- 3GPP TS45.001