Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-141,188 specifications
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 37.171
Universal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA); User Equipment (UE) performance requirements for Radio Access Technology (RAT) Independent Positioning Enhancements
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.213
Physical layer procedures for shared spectrum channel access
Physical Layer
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.320
Radio measurement collection for Minimization of Drive Tests (MDT); Overall description; Stage 2
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.324
Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Service Data Adaptation Protocol (SDAP) specification
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.340
Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity; Overall Description; Stage-2
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.355
LTE Positioning Protocol (LPP)
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.460
Iuant interface: General aspects and principles
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.461
Iuant interface: Layer 1
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.462
Iuant interface: Signalling transport
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.466
Iuant interface: Application part
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.544
Universal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA); User Equipment (UE) Over The Air (OTA) performance; Conformance testing
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.571-1
User Equipment (UE) conformance specification for UE positioning; Part 1: Conformance test specification
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.571-2
User Equipment (UE) conformance specification for UE positioning; Part 2: Protocol conformance
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.571-3
User Equipment (UE) conformance specification for UE positioning; Part 3: Implementation Conformance Statement (ICS)
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.571-4
User Equipment (UE) conformance specification for UE positioning; Part 4: Test suites
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.571-5
User Equipment (UE) conformance specification for UE positioning; Part 5: Test scenarios and assistance data
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.843
Evolved Universal Terrestrial Radio Access (E-UTRA) and Universal Terrestrial Radio Access (UTRA); Radio Frequency (RF) requirement background for Active Antenna System (AAS) Base Station (BS) radiated requirements
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.872
Supplementary uplink (SUL) and LTE-NR co-existence
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.876
Study on eNB(s) Architecture Evolution for E-UTRAN and NG-RAN
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25
TS 37.885
Study on evaluation methodology of new Vehicle-to-Everything (V2X) use cases for LTE and NR
Architecture
Rel-15TSMulti-RATUpdated 2026-07-25