Release Rel-17
5G NRExtends 5G NR to new device classes and satellite access.
Frozen 2022-03-231,408 specifications
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 38.215
NR; Physical layer measurements
Physical Layer
Rel-17TS5G NRUpdated 2026-07-25
TS 38.300
NR; NR and NG-RAN Overall description; Stage-2
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.304
NR; User Equipment (UE) procedures in Idle mode and in RRC Inactive state
Protocol
Rel-17TS5G NRUpdated 2026-07-25
TS 38.305
NG Radio Access Network (NG-RAN); Stage 2 functional specification of User Equipment (UE) positioning in NG-RAN
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.306
NR; User Equipment (UE) radio access capabilities
Physical Layer
Rel-17TS5G NRUpdated 2026-07-25
TS 38.307
NR; Requirements on User Equipments (UEs) supporting a release-independent frequency band
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.314
NR; Layer 2 measurements
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.321
NR; Medium Access Control (MAC) protocol specification
Protocol
Rel-17TS5G NRUpdated 2026-07-25
TS 38.322
NR; Radio Link Control (RLC) protocol specification
Protocol
Rel-17TS5G NRUpdated 2026-07-25
TS 38.323
NR; Packet Data Convergence Protocol (PDCP) specification
Protocol
Rel-17TS5G NRUpdated 2026-07-25
TS 38.331
NR; Radio Resource Control (RRC); Protocol specification
Protocol
Rel-17TS5G NRUpdated 2026-07-25
TS 38.340
NR; Backhaul Adaptation Protocol (BAP) specification
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.351
NR; Sidelink Relay Adaptation Protocol (SRAP) Specification
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.401
NG-RAN; Architecture description
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.410
NG-RAN; NG general aspects and principles
Interface
Rel-17TS5G NRUpdated 2026-07-25
TS 38.411
NG-RAN; NG layer 1
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.412
NG-RAN; NG signalling transport
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.413
NG-RAN; NG Application Protocol (NGAP)
Interface
Rel-17TS5G NRUpdated 2026-07-25
TS 38.414
NG-RAN; NG data transport
Architecture
Rel-17TS5G NRUpdated 2026-07-25
TS 38.415
NG-RAN; PDU session user plane protocol
Architecture
Rel-17TS5G NRUpdated 2026-07-25