NB-IoT Classification

NB-IoT can be classified as LTE Cat NB1 and LTE Cat NB2

NB-IoT

LTE Cat NB2 refers to devices which are based on the enhanced NB-IoT protocol as standardized in the 3GPP Release 14

NB1 devices support total downlink of 680 bits and uplink of 1000 bits with uplink data rate support of 62Kbps (max) whereas NB2 devices support total downlink and uplink of 2536 bits with uplink data rate support of 159Kbps (max)

For example, CEVA launched Dragonfly 1 chipset with NB1 specifications and Dragonfly 2 chipset with NB2 specifications NB2 provided multicast transmission, better mobility and higher transmission rate which were absent from NB1.