What is LTE Cat 4?

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May 27, 2024

LTE Cat-4 (LTE Category 4) is an LTE user equipment (UE) category that defines the performance and specifications – such as data rate, power, type of modulation, bandwidth, etc. – of LTE Cat 4 UE. LTE Cat-4 UEs support a downlink data rate of 150.8 Mbit/s and an uplink data rate of 51.0 Mbit/s with 2 layers of spatial multiplexing in downlink (DL). With just one additional antenna than LTE Cat 1 technology, LTE Cat 4 provides a higher data rate of about 10x more than the LTE Cat 1.

Key Specification of LTE Cat 4 UE



3GPP Release


Downlink Peak Data Rate

1 Mbit/s

Uplink Peak Data Rate

1 Mbit/s 

Maximum system Bandwidth

20 MHz

Device Transmit Power

23 dBm

Transmission Mode

Half Duplex

Number of antenna(s)

Power saving mode


Number of Downlink MIMO Layers



  • DL-SCH stands for Downlink shared channel,
  • UL-SCH stands for Uplink shared channel,
  • TTI stands for Transmission Time Interval,
  • PDCP stands for Packet Data Convergence Protocol,
  • SDU stands for Service Data Unit.

View all LTE User Equipment Categories.