3GPP Atlas

Canonical Atlas record

TS 38.420

NG-RAN; Xn general aspects and principles

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Responsible WGR3
StatusUnder change control
Initial releaseRel-15
Selected releaseRel-18
Latest indexed version19.1.0
Series38
TypeTS

Release evolution

Compare evidence between releases

Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.

Release ledger

Version · WI · CR evidence by release

Rel-1515.2.02 WI11 CRs · 4 approved
Rel-1616.0.03 WI26 CRs · 3 approved
Rel-1717.2.08 WI31 CRs · 12 approved
Rel-1818.1.07 WI30 CRs · 10 approved
Rel-1919.1.05 WI30 CRs · 6 approved

Rel-18 snapshot

Work affecting this release

30 indexed Change Requests · 7 connected Work Items.

Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →

CR 0043 rev.2 — Rel-18 Corrections of mIAB

CR 0044 rev.1 — Correction on R18 NR QoE enhancements

CR 0041 rev.1 — Support for transfer PDU Set Information container during data forwarding

CR 0037 rev.1 — Support of mobile IAB

CR 0038 rev.1 — QMC enhancements for NR-DC

CR 0035 rev.3 — SON Introduction of RACH Indication

CR 0040 — Support for XR PDU Set Handling

CR 0036 rev.3 — (CR to 38.420) Support of AIML for NG-RAN

CR 0039 — Network energy saving enhancements

CR 0034 rev.6 — Introduction on MT-SDT

CR 0037 — (BL CR to 38.420) Support of mobile IAB

CR 0034 — (BLCR to 38.420) Introduction on MT-SDT

Version history

Indexed versions

Showing 23 of 23 indexed versions.

19.1.0Rel-19RAN#1102025-12-25
19.0.0Rel-19RAN#1092025-09-30
18.1.0Rel-18RAN#1032024-03-27
18.0.0Rel-18RAN#1022024-01-12
17.2.0Rel-17RAN#97-e2022-09-23
17.1.0Rel-17RAN#962022-06-23
17.0.0Rel-17RAN#95-e2022-04-06
16.0.0Rel-16RAN#88-e2020-07-16
15.2.0Rel-15RAN#822019-01-08
15.1.0Rel-15RAN#812018-09-25
15.0.0Rel-15RAN#802018-06-26
0.9.0Rel-15 · pre-approvalRAN3#1002018-06-06
1.0.0Rel-15 · pre-approvalRAN#802018-06-04
0.8.0Rel-15 · pre-approvalRAN3#99-Bis2018-05-02
0.7.0Rel-15 · pre-approvalRAN3#992018-03-12
0.6.0Rel-15 · pre-approvalRAN3-AH-18012018-02-07
0.5.0Rel-15 · pre-approvalRAN3#982017-12-12
0.4.0Rel-15 · pre-approvalRAN3#97-Bis2017-11-09
0.3.0Rel-15 · pre-approvalRAN3#97-Bis2017-11-09
0.2.0Rel-15 · pre-approvalRAN3-NR#22017-08-14
0.1.0Rel-15 · pre-approvalRAN3#962017-06-26
0.0.1Rel-15 · pre-approvalRAN3#95-Bis2017-06-26
0.0.2Rel-15 · pre-approvalRAN3#962017-05-05

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TS 38.420

NR_newRAT

New Radio Access Technology

Rel-15official
NR_newRAT-Core

Core part: New Radio Access Technology

Rel-15parsed
NR_Mob_enh-Core

Core part: NR mobility enhancements

Rel-16parsed
NR_SON_MDT

SON (Self-Organising Networks) and MDT (Minimization of Drive Tests) support for NR

Rel-16parsed
NR_SON_MDT-Core

Core part: SON (Self-Organising Networks) and MDT (Minimization of Drive Tests) support for NR

Rel-16parsed
LTE_NR_DC_enh2-Core

Core part: Further Multi-RAT Dual-Connectivity enhancements

Rel-17parsed
NR_ENDC_SON_MDT_enh-Core

Core part: Enhancement of data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR standalone and MR-DC (Multi-Radio Dual Connectivity)

Rel-17parsed
NR_IAB_enh-Core

Core part: Enhancements to IAB for NR

Rel-17parsed
NR_MBS-Core

Core part: NR multicast and broadcast services

Rel-17parsed
NR_QoE-Core

Core part: NR QoE management and optimizations for diverse services

Rel-17parsed
NR_SmallData_INACTIVE

NR small data transmissions in INACTIVE state

Rel-17parsed
NR_SmallData_INACTIVE-Core

Core part: NR small data transmissions in INACTIVE state

Rel-17parsed
TEI17

(Small) Technical Enhancements and Improvements for Rel-17

Rel-17parsed
NR_AIML_NGRAN-Core

Core part: Artificial Intelligence (AI)/Machine Learning (ML) for NG-RAN

Rel-18parsed
NR_ENDC_SON_MDT_enh2-Core

Core part: Further enhancement of data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR and EN-DC

Rel-18parsed
NR_MT_SDT-Core

Core part: Mobile Terminated-Small Data Transmission (MT-SDT) for NR

Rel-18parsed
NR_QoE_enh-Core

Core part: Enhancement on NR QoE management and optimizations for diverse services

Rel-18parsed
NR_XR_enh-Core

Core part: XR (eXtended Reality) enhancements for NR

Rel-18parsed
NR_mobile_IAB-Core

Core part: Mobile IAB (Integrated Access and Backhaul) for NR

Rel-18parsed
Netw_Energy_NR-Core

Core part: Network energy savings for NR

Rel-18parsed
NR_ENDC_SON_MDT_Ph4-Core

Core part: Data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR standalone and MR-DC (Multi-Radio Dual Connectivity) Phase 4

Rel-19parsed
NR_LPWUS-Core

Core part: Low-power wake-up signal and receiver for NR (LP-WUS/WUR)

Rel-19parsed
NR_Mob_Ph4-Core

Core part: NR mobility enhancements Phase 4

Rel-19parsed
NR_duplex_evo-Core

Core part: Evolution of NR duplex operation: Sub-band full duplex (SBFD)

Rel-19parsed
Netw_Energy_NR_enh-Core

Core part: Enhancements of Network energy savings for NR

Rel-19parsed

Knowledge graph

Related standards

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