Release Rel-17
5G NRExtends 5G NR to new device classes and satellite access.
Frozen 2022-03-23176 specifications in series 29
Key features: RedCap (NR-Light), NR-NTN, multicast/broadcast, XR support
All SeriesSeries 21Series 22Series 23Series 24Series 26Series 27Series 28Series 29Series 31Series 32Series 33Series 34Series 35Series 36Series 37Series 38
TS 29.279
Mobile IPv4 (MIPv4) based mobility protocols; Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.280
Evolved Packet System (EPS); 3GPP Sv interface (MME to MSC, and SGSN to MSC) for SRVCC
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.281
General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)
Interface
Rel-17TSEPCUpdated 2026-07-25
TS 29.282
Mobile IPv6 vendor specific option format and usage within 3GPP
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.283
Diameter data management applications
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.292
Interworking between the IP Multimedia (IM) Core Network (CN) subsystem (IMS) and MSC Server for IMS Centralized Services (ICS)
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.303
Domain Name System Procedures; Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.305
InterWorking Function (IWF) between MAP based and Diameter based interfaces
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.309
Bootstrapping Server Function (GBA BSF) Services
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.311
Service Level Interworking (SLI) for messaging services
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.328
IP Multimedia (IM) Subsystem Sh interface; Signalling flows and message contents
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.329
Sh interface based on the Diameter protocol; Protocol details
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.332
Media Gateway Control Function (MGCF) - IM Media Gateway; Mn interface
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.333
Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp interface; Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.334
IMS Application Level Gateway (IMS-ALG) – IMS Access Gateway (IMS-AGW); Iq Interface; Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.335
User Data Convergence (UDC); User data repository access protocol over the Ud interface; Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.336
Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.337
Diameter-based T4 Interface for communications with packet data networks and applications
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.338
Diameter based protocols to support Short Message Service (SMS) capable Mobile Management Entities (MMEs)
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 29.343
Proximity-services (ProSe) function to ProSe application server aspects (PC2); Stage 3
Architecture
Rel-17TS5GCUpdated 2026-07-25