What is the difference between LTE Cat NB1 and LTE Cat NB2?

1 Answer
Can you answer this question?

- everything RF

Jul 9, 2020

LTE Cat NB1, also known as Narrowband IoT (NB-IoT) is a Low Power Wide Area (LPWA) technology that has been developed to enable a wide range of devices to be connected to the internet using existing mobile networks. NB-IoT has been developed to enable the Internet of Things (IoT). It is a low power, narrowband technology that can support small amounts of 2-way data transmission in an efficient, secure, and reliable manner. This standard was created in 3GPP Release 13.

LTE Cat NB2 is an upgraded version of the LTE Cat NB1 standard (NB-IoT). In Release 14, 3GPP introduced an enhanced NB-IoT protocol and a new device category called NB2. This standard is an upgraded version of the LTE Cat NB1 standard.


FeaturesLTE Cat NB1LTE Cat NB2
3GPP ReleaseRelease 13Release 14
Channel Bandwidth180 kHz180 kHz
UE Bandwidth200 kHz200 kHz
Transmission DuplexityHalfHalf
Max Tx Power20, 23 dBm14, 20, 23 dBm
Max Downlink data rate~26 kbps~127 kbps
Max Uplink data rate~62 kbps~159 kbps
Latency<10 sec-
Data EncryptionEPS-AKAEPS-AKA
Device AuthenticationSIMSIM
Voice SupportNoNo
PositioningCell IDOTDOA, E-CID