Canonical Atlas record
NG-RAN; Architecture description
NG-RAN architecture
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
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
Rel-15 snapshot
180 indexed Change Requests · 4 connected Work Items.
Showing 0 CR records from the available cross-release sample. Browse release CR records (JSON) →
Version history
Showing 56 of 56 indexed versions.
Atlas classifications
No Atlas classifications have been attached yet.
Work Items
Separation of CP and UP for Split Option 2 of NR
Core part: Separation of CP and UP for Split Option 2 of NR
New Radio Access Technology
Core part: New Radio Access Technology
Core part: Direct data forwarding between NG-RAN and E-UTRAN nodes for inter-system mobility
Core part: LTE-NR & NR-NR Dual Connectivity and NR CA enhancements
Core part: eNB(s) Architecture Evolution for E-UTRAN and NG-RAN
Private Network Support for NG-RAN
Core part: Private Network Support for NG-RAN
Cross Link Interference (CLI) handling and Remote Interference Management (RIM) for NR
Core part: NR_IAB
Core part: NR mobility enhancements
SON (Self-Organising Networks) and MDT (Minimization of Drive Tests) support for NR
Core part: SON (Self-Organising Networks) and MDT (Minimization of Drive Tests) support for NR
NR positioning support
Core part: NR positioning support
(Small) Technical Enhancements and Improvements for Rel-16
Historical association · verification pendingCore part: Further Multi-RAT Dual-Connectivity enhancements
Core part: LTE_NR_arch_evo_enh
Enhancement of data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR and EN-DC
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)
Enhancements to Integrated Access and Backhaul (IAB) for NR
Core part: Enhancements to IAB for NR
Core part: NR multicast and broadcast services
Core part: NR QoE management and optimizations for diverse services
NR Sidelink Relay
Core part: NR Sidelink Relay
NR small data transmissions in INACTIVE state
Core part: NR small data transmissions in INACTIVE state
Core part: NR_UDC
Core part: NR_redcap
(Small) Technical Enhancements and Improvements for Rel-17
Core part: Artificial Intelligence (AI)/Machine Learning (ML) for NG-RAN
Core part: Further enhancement of data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR and EN-DC
Core part: Enhancements of NR Multicast and Broadcast Services
Mobile Terminated-Small Data Transmission (MT-SDT) for NR
Core part: Mobile Terminated-Small Data Transmission (MT-SDT) for NR
Further NR mobility enhancements
Core part: Further NR mobility enhancements
Core part: Enhancement on NR QoE management and optimizations for diverse services
NR sidelink relay enhancements
Core part: NR sidelink relay enhancements
Core part: XR (eXtended Reality) enhancements for NR
Mobile IAB (Integrated Access and Backhaul) for NR
Core part: Mobile IAB (Integrated Access and Backhaul) for NR
NR network-controlled repeaters
Core part: NR network-controlled repeaters
Core part: Enhanced support of reduced capability NR devices
(Small) Technical Enhancements and Improvements for Rel-18
Core part: NR Timing Resiliency and URLLC enhancements
Core part: Solutions for Ambient IoT (Internet of Things) in NR
Core part: Enhancements for Artificial Intelligence (AI)/Machine Learning (ML) for NG-RAN
Core part: Artificial Intelligence (AI)/Machine Learning (ML) for NR air interface
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
Core part: NR mobility enhancements Phase 4
Core part: NR sidelink multi-hop relay
Core part: Additional topological enhancements for NR
Core part: Evolution of NR duplex operation: Sub-band full duplex (SBFD)
Core part: Enhancements of Network energy savings for NR
(Small) Technical Enhancements and Improvements for Rel-19
Core part: Solutions for Ambient IoT in NR Phase 2
NR mobility enhancements Phase 5
Core part: NR mobility enhancements Phase 5
Core part: Data collection for SON/MDT in NR Phase 5
Knowledge graph