Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-14106 specifications in series 36
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 36.421
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 layer 1
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.422
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 signalling transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.423
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP)
Protocol
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.424
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 data transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.425
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 interface user plane protocol
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.440
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); General aspects and principles for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.441
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Layer 1 for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.442
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Signalling Transport for interfaces supporting Multimedia Broadcast Multicast Service (MBMS) within E-UTRAN
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.443
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M2 Application Protocol (M2AP)
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.444
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M3 Application Protocol (M3AP)
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.445
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M1 data transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.455
Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol A (LPPa)
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.456
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); SLm interface general aspects and principles
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.457
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); SLm interface layer 1
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.458
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); SLm interface signalling transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.459
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); SLm interface Application Protocol (SLmAP)
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.461
Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Wireless LAN (WLAN); Xw layer 1
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.462
Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Wireless LAN (WLAN); Xw signalling transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.463
Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Wireless Local Area Network (WLAN); Xw application protocol (XwAP)
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25
TS 36.464
Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Wireless Local Area Network (WLAN); Xw data transport
Architecture
Rel-15TSLTE-Advanced ProUpdated 2026-07-25