URLLC (Ultra-Reliable Low-Latency Communications)
Also known as: Ultra-Reliable Low-Latency Communications
URLLC is one of the three 5G service categories defined by 3GPP alongside eMBB and mMTC, targeting user-plane latencies as low as 1 ms and packet reliability of 99.999% or better. URLLC is achieved through short transmission time intervals, mini-slots, pre-emption, PDCP duplication, redundant PDU sessions and integration with Time-Sensitive Communications, and is the enabler for industrial automation, remote control, and cellular vehicle-to-everything use cases.
Categories: Protocols and Standards
URLLC in context
Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how the specs interlock (for example 3GPP TS 33.501 with GSMA FS.34 for 5G SBA security), is essential for both design and audit work.
To place URLLC in the wider telecom-security picture, review TSN, QCI, Network Slice, Jitter, MEC and MPLS.
Related terms
Related topic hubs
- Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.
- 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
- 5G NEF Security Network Exposure Function security in the 5G core.
- 5G Penetration Testing Pentesting the 5G core, SBA, SEPP, and gNB interfaces.
More from the TelcoSec Glossary
Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.