Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-141,188 specifications
Key features: First 5G NR specifications, NSA and SA architectures
All SeriesSeries 21Series 22Series 23Series 24Series 26Series 27Series 28Series 29Series 31Series 32Series 33Series 34Series 35Series 36Series 37Series 38
TS 22.988
Study on alternatives to E.164 for Machine-Type Communications (MTC)
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.989
Study on Future Railway Mobile Communication System
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 23.002
Network architecture
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.003
Numbering, addressing and identification
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.007
Restoration procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.008
Organization of subscriber data
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.009
Handover procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.011
Technical realization of Supplementary Services
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.012
Location management procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.014
Support of Dual Tone Multi-Frequency (DTMF) signalling
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.015
Technical realization of Operator Determined Barring (ODB)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.016
Subscriber data management; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.018
Basic call handling; Technical realization
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.032
Universal Geographical Area Description (GAD)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.034
High Speed Circuit Switched Data (HSCSD); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.035
Immediate Service Termination (IST); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.038
Alphabets and language-specific information
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.040
Technical realization of the Short Message Service (SMS)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.041
Technical realization of Cell Broadcast Service (CBS)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.042
Compression algorithm for text messaging services
Architecture
Rel-15TS5GCUpdated 2026-07-25