Release Rel-16
5G NREnhances 5G NR with unlicensed spectrum, vehicle-to-everything, and private network support.
Frozen 2020-07-03140 specifications in series 23
Key features: NR-U unlicensed, V2X, industrial IoT, integrated access backhaul
All SeriesSeries 21Series 22Series 23Series 24Series 26Series 27Series 28Series 29Series 31Series 32Series 33Series 34Series 35Series 36Series 37Series 38
TS 23.218
IP Multimedia (IM) session handling; IM call model; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.221
Architectural requirements
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.222
Common API Framework for 3GPP Northbound APIs
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.226
Global text telephony (GTT); Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.228
IP Multimedia Subsystem (IMS); Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.231
SIP-I based circuit-switched core network; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.236
Intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.237
IP Multimedia Subsystem (IMS) Service Continuity; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.240
3GPP Generic User Profile (GUP); Architecture (Stage 2)
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.246
Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.251
Network sharing; Architecture and functional description
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.259
Personal Network Management (PNM); Procedures and information flows; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.261
IP flow mobility and seamless Wireless Local Area Network (WLAN) offload; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.271
Functional stage 2 description of Location Services (LCS)
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.272
Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.273
5G System (5GS) Location Services (LCS); Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.278
Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; Stage 2; IM CN Interworking
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.279
Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.280
Common functional architecture to support mission critical services; Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25
TS 23.281
Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2
Architecture
Rel-16TS5GCUpdated 2026-07-25