5G service category for mission-critical applications requiring extreme reliability and low latency.
Description
Ultra-Reliable Low-Latency Communications (URLLC) is one of the three main 5G service categories, targeting applications requiring very high reliability (99.999%+) and very low latency (1 ms or less).
URLLC enables applications like factory automation, remote surgery, autonomous vehicles, and smart grid control. It requires innovations across the entire system from air interface to core network.
Purpose & Motivation
URLLC was introduced to:
- Enable mission-critical industrial applications - Support real-time control systems - Provide deterministic latency for automation - Enable new use cases like remote surgery
Key Features
- ✓1 ms user plane latency target
- ✓99.999% reliability
- ✓Mini-slot transmission
- ✓Grant-free (configured grant) UL
- ✓PDCP duplication
- ✓Preemption indicators