Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-14126 specifications in series 29
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 29.890
CT WG3 aspects of 5G System Phase 1
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 29.891
5G System - Phase 1 CT WG4 Aspects
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 29.909
Diameter-based protocols usage and recommendations in 3GPP
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 29.935
Study on User Data Convergence (UDC) data model
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 29.949
Study on technical aspects on roaming end-to-end scenarios with Voice over LTE (VoLTE) IP Multimedia Subsystem (IMS) and other networks
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 29.994
Recommended infrastructure measures to overcome specific Mobile Station (MS) and User Equipment (UE) faults
Architecture
Rel-15TS5GCUpdated 2026-07-25