What is LTE Cat 9?

1 Answer
Can you answer this question?

- everything RF

May 27, 2024

LTE Cat 9 (LTE Category 9) 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 9 UE. LTE Cat 9 UEs are based on LTE Advanced (LTE-A) technology with support for a downlink data rate of 452.2 Mbit/s and an uplink data rate of 51.0 Mbit/s. They utilize MIMO (Multiple Input - Multiple Output) and Carrier Aggregation to deliver higher data rates and support 2 or 4 layers of spatial multiplexing in downlink (DL).

Key Specifications of LTE Cat 9 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.