Difference between LTE-M Cat-0, Cat-M1, Cat-M2 device categories

This page compares LTE-M Cat-0 vs Cat-M1 vs Cat-M2 and describes difference between LTE-M Cat-0, Cat-M1, Cat-M2 device categories.

LTE-M follows 3GPP specifications similar to LTE technology. LTE-M stands for Long Term Evolution for Machine-Type Communications. It is mainly developed to fulfill cellular IoT device objectives such as low device cost, deep coverage, longer battery life, higher cell capacity and so on.

LTE-M Cat-0

• It is specified in 3GPP Release-12.
• Peak data rates: 1 Mbps in DL and UL (Cat-1 supports 10 Mbps in DL and 5 Mbps in UL)
• Number of Receive Antennas : 1 (Cat-1 supports at least two antennas)
• Optional: HD-FDD (Half Duplex Frequency Division Duplex)
• Bandwidth: 20 MHz
• Device power class: 23 dBm

LTE-M Cat-M1

• It is specified in 3GPP Release-13.
• Supports cost reduction features of Cat-0 and in addition following.
• Duplex modes: HD-FDD, FD-FDD, TDD
• Peak data rates: 800 Kbps (DL) and 1 Mbps (UL) using FD-FDD mode and considering scheduling delays. 300 Kbps (DL) and 375 Kbps (UL) using HD-FDD and considering scheduling delays.
• Number of receive antennas : 1
• Bandwidth: 1.4 MHz
• Maximum DL/UL Bandwidth: 6 PRBs (1.080 MHz)
• Higher modulation scheme: 16 QAM
• DL/UL coding scheme : Turbo code
• Max. supported spatial layers: 1 in DL/UL
• Maximum TBS : 1000 bits (DL/UL)
• Device power class: 20 dBm
• This category of LTE-M low cost device supports CE Mode-A (Mandatory) and CE Mode-B (Optionally).

LTE-M Cat-M2

• It is specified in 3GPP Release-14.
• Bandwidth: 5 MHz ( offers transmission in PDSCH and PUSCH using 24 PRBs instead of 6 PRBs ).
• TBS : 4008 bits (DL), 6968 bits (UL)
• Peak data rates: 4 Mbps (DL), 7 Mbps (UL)

NB-IoT Related Stuff


This tutorial section on LTE basics covers following sub topics:
LTE tutorial  LTE features  LTE terminologies  Frame  TDD FDD  Channel types  PHY  stack  throughput  CA   cell search  network entry  Timers  PSS vs SSS  Security   LTE Bands  EARFCN  Hotspot  router  What is VoLTE  VoLTE originating call flow  VoLTE UE attach and registration procedure 

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