Canonical Atlas record

TS 38.321

NR; Medium Access Control (MAC) protocol specification

Responsible WGR2
StatusUnder change control
Initial releaseRel-15
Selected releaseRel-98
Latest indexed version19.4.0
Series38
TypeTS
Visual answer

TS 38.321 relationship map

NR MAC

Rel-98mixed provenance

Release-aware filtering uses explicit relationship validity where mapped and official initial-release metadata where available. Unknown relationship validity remains visible and labelled rather than guessed.

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-14no version indexed2 WI0 CRs
Rel-1515.14.06 WI1007 CRs · 114 approved
Rel-1616.22.019 WI771 CRs · 153 approved
Rel-1717.15.023 WI784 CRs · 168 approved
Rel-1818.10.025 WI565 CRs · 162 approved
Rel-1919.4.013 WI120 CRs · 39 approved

Rel-98 snapshot

Work affecting this release

0 indexed Change Requests · 0 connected Work Items.

Showing 0 CR records from the available cross-release sample. Browse release CR records (JSON) →

Version history

Indexed versions

Showing 60 of 80 indexed versions.

19.4.0Rel-19RAN#1132026-09-25
18.10.0Rel-18RAN#1122026-06-29
19.3.0Rel-19RAN#1122026-06-26
18.9.0Rel-18RAN#1112026-03-20
19.2.0Rel-19RAN#1112026-03-19
17.15.0Rel-17RAN#1102026-01-18
16.22.0Rel-16RAN#1102026-01-18
19.1.0Rel-19RAN#1102026-01-17
18.8.0Rel-18RAN#1102026-01-17
17.14.0Rel-17RAN#1092025-10-10
16.21.0Rel-16RAN#1092025-10-10
15.14.0Rel-15RAN#1092025-10-10
19.0.0Rel-19RAN#1092025-10-05
18.7.0Rel-18RAN#1092025-10-03
16.20.0Rel-16RAN#1082025-06-26
17.13.0Rel-17RAN#1082025-06-25
18.6.0Rel-18RAN#1082025-06-24
17.12.0Rel-17RAN#1072025-03-22
16.19.0Rel-16RAN#1072025-03-22
18.5.0Rel-18RAN#1072025-03-21
18.4.0Rel-18RAN#1062024-12-20
17.11.0Rel-17RAN#1062024-12-20
16.18.0Rel-16RAN#1062024-12-19
17.10.0Rel-17RAN#1052024-09-27
16.17.0Rel-16RAN#1052024-09-27
18.3.0Rel-18RAN#1052024-09-25
18.2.0Rel-18RAN#1042024-07-12
17.9.0Rel-17RAN#1042024-07-12
16.16.0Rel-16RAN#1042024-07-12
18.1.0Rel-18RAN#1032024-04-04
17.8.0Rel-17RAN#1032024-04-04
16.15.0Rel-16RAN#1032024-04-04
18.0.0Rel-18RAN#1022024-01-12
17.7.0Rel-17RAN#1022024-01-12
16.14.0Rel-16RAN#1022024-01-12
17.6.0Rel-17RAN#1012023-09-27
16.13.0Rel-16RAN#1012023-09-27
17.5.0Rel-17RAN#1002023-06-30
16.12.0Rel-16RAN#1002023-06-30
17.4.0Rel-17RAN#992023-03-29
17.3.0Rel-17RAN#98-e2023-01-13
16.11.0Rel-16RAN#98-e2023-01-13
17.2.0Rel-17RAN#97-e2022-10-01
16.10.0Rel-16RAN#97-e2022-09-30
17.1.0Rel-17RAN#962022-07-20
16.9.0Rel-16RAN#962022-07-17
17.0.0Rel-17RAN#95-e2022-04-14
16.8.0Rel-16RAN#95-e2022-04-14
15.13.0Rel-15RAN#95-e2022-04-14
16.7.0Rel-16RAN#94-e2021-12-23
16.6.0Rel-16RAN#93-e2021-09-27
16.5.0Rel-16RAN#92-e2021-07-07
16.4.0Rel-16RAN#91-e2021-03-29
15.12.0Rel-15RAN#91-e2021-03-29
16.3.0Rel-16RAN#90-e2021-01-06
15.11.0Rel-15RAN#90-e2021-01-06
16.2.1Rel-16RAN#89-e2020-10-05
16.2.0Rel-16RAN#89-e2020-10-05
15.10.0Rel-15RAN#89-e2020-10-05
16.1.0Rel-16RAN#88-e2020-07-24

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TS 38.321

LTE_LATRED_L2-Core

Core part: L2 latency reduction techniques for LTE

Rel-14parsed
UTRA_DL_IM-Core

Core part: DL interference mitigation for UMTS

Rel-14parsed
LTE_QMC_Streaming-Core

Core part:Quality of Experience (QoE) Measurement Collection for streaming services in E-UTRAN

Rel-15parsed
LTE_ViLTE_enh2-Core

Core part: Further video enhancements for LTE

Rel-15parsed
LTE_euCA-Core

Core part: Enhancing LTE CA Utilization

Rel-15parsed
LTE_unlic-Core

Core part: Enhancements to LTE operation in unlicensed spectrum

Rel-15parsed
NR_newRAT

New Radio Access Technology

Rel-15parsed
NR_newRAT-Core

Core part: New Radio Access Technology

Rel-15official
5G_V2X_NRSL

5G V2X with NR sidelink

Rel-16parsed
5G_V2X_NRSL-Core

Core part: 5G V2X with NR sidelink

Rel-16parsed
E_FLUS

Enhancements to Framework for Live Uplink Streaming

Rel-16parsed
LTE_NR_DC_CA_enh-Core

Core part: LTE-NR & NR-NR Dual Connectivity and NR CA enhancements

Rel-16parsed
NR_2step_RACH-Core

Core part: 2-step RACH for NR

Rel-16parsed
NR_IAB-Core

Core part: NR_IAB

Rel-16parsed
NR_IIOT

Support of NR Industrial Internet of Things (IoT)

Rel-16parsed
NR_IIOT-Core

Core part: Support of NR Industrial Internet of Things (IoT)

Rel-16parsed
NR_L1enh_URLLC-Core

Core part: Physical Layer Enhancements for NR URLLC

Rel-16parsed
NR_Mob_enh-Core

Core part: NR mobility enhancements

Rel-16parsed
NR_RF_FR2_req_enh

NR RF requirement enhancements for frequency range 2 (FR2)

Rel-16parsed
NR_RF_FR2_req_enh-Core

Core part: NR RF requirement enhancements for FR2

Rel-16parsed
NR_UE_pow_sav

UE Power Saving in NR

Rel-16parsed
NR_UE_pow_sav-Core

Core part: UE Power Saving in NR

Rel-16parsed
NR_eMIMO

Enhancements on MIMO for NR

Rel-16parsed
NR_eMIMO-Core

Core part: Enhancements on MIMO for NR

Rel-16parsed
NR_pos-Core

Core part: NR positioning support

Rel-16parsed
NR_unlic-Core

Core part: NR-based access to unlicensed spectrum

Rel-16parsed
TEI16

(Small) Technical Enhancements and Improvements for Rel-16

Historical association · verification pending
Rel-16historical link
LTE_NBIOT_eMTC_NTN

NB-IoT/eMTC support for Non-Terrestrial Networks

Rel-17parsed
LTE_NR_DC_enh2

Further Multi-RAT Dual-Connectivity enhancements

Rel-17parsed
LTE_NR_DC_enh2-Core

Core part: Further Multi-RAT Dual-Connectivity enhancements

Rel-17parsed
LTE_NR_MUSIM-Core

Core part: Support for Multi-SIM devices for LTE/NR

Rel-17parsed
NR_FeMIMO-Core

Core part: Further enhancements on MIMO for NR

Rel-17parsed
NR_IAB_enh

Enhancements to Integrated Access and Backhaul (IAB) for NR

Rel-17parsed
NR_IAB_enh-Core

Core part: Enhancements to IAB for NR

Rel-17parsed
NR_IIOT_URLLC_enh-Core

Core part: Enhanced IoT and URLLC support for NR

Rel-17parsed
NR_MBS-Core

Core part: NR multicast and broadcast services

Rel-17parsed
NR_MG_enh-Core

Core part: NR and MR-DC measurement gap enhancements

Rel-17parsed
NR_NTN_solutions

Solutions for NR to support non-terrestrial networks (NTN)

Rel-17parsed
NR_NTN_solutions-Core

Core part: Solutions for NR for NTN

Rel-17parsed
NR_RF_FR2_req_enh2

Further enhancements of NR RF requirements for frequency range 2 (FR2)

Rel-17parsed
NR_SL_enh-Core

Core part: NR Sidelink enhancement

Rel-17parsed
NR_SL_relay-Core

Core part: NR Sidelink Relay

Rel-17parsed
NR_SmallData_INACTIVE-Core

Core part: NR small data transmissions in INACTIVE state

Rel-17parsed
NR_UE_pow_sav_enh-Core

Core part: UE power saving enhancements for NR

Rel-17parsed
NR_cov_enh-Core

Core part: NR_cov_enh

Rel-17parsed
NR_ext_to_71GHz-Core

Core part: Extending current NR operation to 71GHz

Rel-17parsed
NR_pos_enh-Core

Core part: NR positioning enhancements

Rel-17parsed
NR_redcap-Core

Core part: NR_redcap

Rel-17parsed
NR_slice-Core

Core part: Enhancement of RAN slicing for NR

Rel-17parsed
TEI17

(Small) Technical Enhancements and Improvements for Rel-17

Rel-17parsed
NR_ATG-Core

Core part: Air-to-ground network for NR

Rel-18parsed
NR_HST_FR2_enh

Enhanced NR support for high speed train scenario in frequency range 2 (FR2)

Rel-18parsed
NR_HST_FR2_enh-Core

Core part: Enhanced NR support for high speed train scenario in frequency range 2 (FR2)

Rel-18parsed
NR_MBS_enh-Core

Core part: Enhancements of NR Multicast and Broadcast Services

Rel-18parsed
NR_MC_enh-Core

Core part: Multi-carrier enhancements for NR

Rel-18parsed
NR_MIMO_evo_DL_UL-Core

Core part: NR MIMO evolution for downlink and uplink

Rel-18parsed
NR_MT_SDT-Core

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

Rel-18parsed
NR_Mob_enh2-Core

Core part: Further NR mobility enhancements

Rel-18parsed
NR_NTN_enh-Core

Core part: NR NTN (Non-Terrestrial Networks) enhancements

Rel-18parsed
NR_RRM_enh3

Even Further RRM enhancement for NR and MR-DC

Rel-18parsed
NR_SL_enh2

NR sidelink evolution

Rel-18parsed
NR_SL_enh2-Core

Core part: NR sidelink evolution

Rel-18parsed
NR_SL_relay_enh-Core

Core part: NR sidelink relay enhancements

Rel-18parsed
NR_UAV-Core

Core part: NR support for UAV (Uncrewed Aerial Vehicles)

Rel-18parsed
NR_XR_enh-Core

Core part: XR (eXtended Reality) enhancements for NR

Rel-18parsed
NR_cov_enh2

Further NR coverage enhancements

Rel-18parsed
NR_cov_enh2-Core

Core part: Further NR coverage enhancements

Rel-18parsed
NR_mobile_IAB-Core

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

Rel-18parsed
NR_netcon_repeater

NR network-controlled repeaters

Rel-18parsed
NR_netcon_repeater-Core

Core part: NR network-controlled repeaters

Rel-18parsed
NR_pos_enh2

Expanded and improved NR positioning

Rel-18parsed
NR_pos_enh2-Core

Core part: Expanded and improved NR positioning

Rel-18parsed
NR_redcap_enh-Core

Core part: Enhanced support of reduced capability NR devices

Rel-18parsed
Netw_Energy_NR-Core

Core part: Network energy savings for NR

Rel-18parsed
TEI18

(Small) Technical Enhancements and Improvements for Rel-18

Rel-18parsed
NR_AIML_air-Core

Core part: Artificial Intelligence (AI)/Machine Learning (ML) for NR air interface

Rel-19parsed
NR_LPWUS-Core

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

Rel-19parsed
NR_MIMO_Ph5

NR MIMO Phase 5

Rel-19parsed
NR_MIMO_Ph5-Core

Core part: NR MIMO Phase 5

Rel-19parsed
NR_Mob_Ph4

NR mobility enhancements Phase 4

Rel-19parsed
NR_Mob_Ph4-Core

Core part: NR mobility enhancements Phase 4

Rel-19parsed
NR_NTN_Ph3-Core

Core part: Non-Terrestrial Networks (NTN) for NR Phase 3

Rel-19parsed
NR_SL_relay_multihop-Core

Core part: NR sidelink multi-hop relay

Rel-19parsed
NR_XR_Ph3

XR (eXtended Reality) for NR Phase 3

Rel-19parsed
NR_XR_Ph3-Core

Core part: XR (eXtended Reality) for NR Phase 3

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
TEI19

(Small) Technical Enhancements and Improvements for Rel-19

Rel-19parsed

Knowledge graph

Related standards

No graph edges indexed yet. The graph API is available at this JSON endpoint.