Canonical Atlas record
Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification
LTE RRC
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-11 snapshot
322 indexed Change Requests · 24 connected Work Items.
Showing 0 CR records from the available cross-release sample. Browse release CR records (JSON) →
Version history
Showing 60 of 244 indexed versions.
Atlas classifications
No Atlas classifications have been attached yet.
Work Items
Provisioning of IP-based multimedia services
Stage 1 for MBMS User Services
MBMS User Services
Security aspects of MBMS
Gmb interface for MBMS (CN3 part)
Support of the MBMS in CN protocols
Stage 2 MBMS Specification Work
TR on MBMS Architectural Study
Stage 1 for Multimedia Broadcast and Multicast Service
Stage 2 for Multimedia Broadcast and Multicast Service
Multimedia Broadcast and Multicast Service
Multiple-Input Multiple-Output (MIMO) antennas
Earthquake and Tsunami Warning System
UTRA HNB
Rel-8 LTE 3G Long Term Evolution - Evolved Packet System RAN part
LTE Radio Interface Layer 2 and 3 Protocol Aspect
LTE Evolved UTRA and UTRAN RF Radio Transmission/Reception, System Performance Requirements and Conformance Testing
(Small) Technical Enhancements and Improvements for Rel-8
Stage 1 for EHNB
Enhanced Home NodeB / eNodeB
Architecture aspects of EHNB
Home NB and Home eNB enhancements - RAN2 aspects
LTE TDD Home eNodeB RF Requirements
Support for IMS Emergency Calls over LTE
Positioning Support for LTE
Enhanced Dual-Layer transmission for LTE
MBMS support in LTE
Public Warning System
Public Warning System (PWS) RAN aspects
Extended UMTS/LTE 800 MHz
UMTS/LTE 800 MHz for Europe
Rel-9 Self-Organizing Networks (SON)
Service Specific Access Control in EPS
(Small) Technical Enhancements and Improvements for Rel-9
Extended UMTS/LTE 1500 MHz
Deleted - Support of WiMAX - LTE Mobility
Core part: Expanded 1900 MHz Band for UTRA and LTE
Perf. part: Expanded 1900 MHz Band for UTRA and LTE
Carrier Aggregation for LTE
Core part: Carrier Aggregation for LTE
Perf. part: Carrier Aggregation for LTE
Deleted - Core part: Latency reductions for LTE
Relays for LTE
Core part: Relays for LTE
Security for LTE Relay Nodes (Stage 2)
Core part: LTE TDD in 2600MHz for US
Uplink Multiple Antenna Transmission for LTE
Core part: UL multiple antenna transmission for LTE
Enhanced Downlink Multiple Antenna Transmission for LTE
Core part: Enhanced Downlink Multiple Antenna Transmission for LTE
Further enhancements to MBMS for LTE
Core part: Further enhancements to MBMS for LTE
Minimization of Drive Tests for E-UTRAN and UTRAN
Core part: Minimization of Drive Tests for E-UTRAN and UTRAN
Network Improvements for Machine-Type Communications
RAN mechanisms to avoid CN overload due to Machine-Type Communications
Core part: UMTS/LTE 3500 MHz
LTE Self Optimizing Networks (SON) enhancements
Core part: LTE Self Optimizing Networks (SON) enhancements
(Small) Technical Enhancements and Improvements for Rel-10
Enhanced Inter-Cell Interference Control (ICIC) for non-Carrier Aggregation (CA) based deployments of heterogeneous networks for LTE
Core part: Enhanced Inter-Cell Interference Control (ICIC) for non-Carrier Aggregation (CA) based deployments of heterogeneous networks for LTE
Enhancements for Multimedia Priority Service
Core part: Coordinated Multi-Point Operation for LTE Downlink
Core part: Coordinated Multi-Point Operation for LTE Uplink
Core part: Further Enhancements to CELL_FACH
Network-Based Positioning Support for LTE
Core part: Network-Based Positioning Support for LTE
Core part: LTE Advanced Carrier Aggregation of Band 3 and Band 7
Core part: LTE Carrier Aggregation Enhancements
Core part: Additional special subframe configuration for LTE TDD
Core part: LTE E850 - Lower Band for Region 2 (non-US), Band 27
Core part: LTE RAN Enhancements for Diverse Data Applications
Core part: Enhanced downlink control channel(s) for LTE Advanced
Service continuity improvements for MBMS for LTE
Core part: Service continuity improvements for MBMS for LTE
Core part: RAN overload control for Machine-Type Communications
Core part: Further Self Optimizing Networks (SON) enhancements
Signalling and Procedure for Interference Avoidance for in-device coexistence
Core part: Signalling and Procedure for Interference Avoidance for in-device coexistence
(Small) Technical Enhancements and Improvements for Rel-11
Core part: Extending 850 MHz Upper Band (814 849 MHz)
Perf. part: Extending 850 MHz Upper Band (814 849 MHz)
Core part: Further Enhanced Non CA-based ICIC for LTE
Enhancement of Minimization of Drive Tests for E-UTRAN and UTRAN
Core part: Enhancement of Minimization of Drive Tests for E-UTRAN and UTRAN
GERAN aspects of Single Radio Voice Call Continuity from UTRAN/GERAN to E-UTRAN/HSPA (Stage 3)
Core part: LTE Coverage Enhancements
Further enhancements to H(e)NB mobility - Part 3 (Stage 2/3)
Core part: Further enhancements to H(e)NB mobility - Part 3
Core part: HetNet Mobility enhancements for LTE
Core part: Low cost & enhanced coverage MTC UE for LTE
Core part:LTE Advanced inter-band Carrier Aggregation of Band 1 and Band 8
Core part:LTE Advanced intra-band non-contiguous Carrier Aggregation: framework requirements for 2UL
Core part: LTE TDD-FDD joint operation including Carrier Aggregation
Core part: LTE Device to Device Proximity Services
Core part: Network-Assisted Interference Cancellation and Suppression for LTE
Deleted - Core part: New Carrier Type for LTE
E-UTRA Small cell enhancements - Physical layer aspects
Core part: E-UTRA Small cell enhancements - Physical layer aspects
Core part: Dual connectivity for LTE
Core part: Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation
Core part: Increasing the minimum number of carriers for UE monitoring in UTRA and E-UTRA
Core part: L-band for Supplemental Downlink in E-UTRA and UTRA
Core part: LTE in the US Wireless Communications Service (WCS) Band 30
Further Downlink MIMO Enhancement for LTE Advanced
Core part: Further Downlink MIMO Enhancement for LTE Advanced
Core part: Further MBMS operations support for E-UTRAN
MBMS Improvements
Core part: RAN enhancements for Machine-Type and other mobile data applications Communications
Deleted - RAN2 part for Security aspects of Public Warning System
Core part: Smart Congestion Mitigation in E-UTRAN
(Small) Technical Enhancements and Improvements for Rel-12
Core part: WLAN/3GPP Radio Interworking
Core part: RAN aspects of Application specific Congestion control for Data Communication
Core part: Dedicated Core Networks
LTE Carrier Aggregation Enhancement Beyond 5 Carriers
Core part: LTE Carrier Aggregation Enhancement Beyond 5 Carriers
Perf. part: CRS Interference Mitigation for LTE Homogenous Deployments
Core part: Elevation Beamforming/Full-Dimension (FD) MIMO for LTE
Interference mitigation for downlink control channels of LTE
Perf. part: Interference mitigation for downlink control channels of LTE
Core part: Licensed-Assisted Access using LTE
Core part: Multicarrier Load Distribution of UEs in LTE
Core part: Further LTE Physical Layer Enhancements for MTC
Core part: Support of single-cell point-to-multipoint transmission in LTE
UE core requirements for uplink 64 QAM
Core part: UE core requirements for uplink 64 QAM
Core part: LTE-WLAN Radio Level Integration and Interworking Enhancement
Core part: LTE-WLAN RAN Level Integration supporting legacy WLAN
Core part: Dual Connectivity enhancements for LTE
Core part: Extension of Dual Connectivity in E-UTRAN
Enhanced LTE Device to Device Proximity Services
Core part: Enhanced LTE Device to Device Proximity Services
Further Enhancements of Minimization of Drive Tests for E-UTRAN
Core part: Further Enhancements of Minimization of Drive Tests for E-UTRAN
Core part: RAN enhancements for extended DRX in LTE
Core part: Narrowband Internet of Things (IOT)
(Small) Technical Enhancements and Improvements for Rel-13
Study on Latency reduction techniques for LTE
Core part: L2 latency reduction techniques for LTE
Core part: Downlink Multiuser Superposition Transmission for LTE
Core part: Support for V2V services based on LTE sidelink
SRS (sounding reference signal) switching between LTE component carriers
Core part: SRS (sounding reference signal) switching between LTE component carriers
Core part: Requirements for a new UE category with single receiver based on Category 1 for LTE
Core part: Uplink Capacity Enhancements for LTE
Core part: LTE-based V2X Services
Voice and Video Enhancement for LTE
Core part: Voice and Video Enhancement for LTE
Core part: Enhanced LTE-WLAN Aggregation (LWA)
Enhancements on Full-Dimension (FD) MIMO for LTE
Core part: Enhancements on Full-Dimension (FD) MIMO for LTE
Core part: Enhanced LAA for LTE
Core part: Further mobility enhancements in LTE
Further enhanced MTC for LTE
Core part: Further enhanced MTC for LTE
Performance enhancements for high speed scenario in LTE
Core part: Performance enhancements for high speed scenario in LTE
LTE Measurement Gap Enhancement
Core part: LTE Measurement Gap Enhancement
eMBMS enhancements for LTE
Core part: eMBMS enhancements for LTE
Enhancements of NB-IoT
Core part: Enhancements of NB-IoT
(Small) Technical Enhancements and Improvements for Rel-14
Core part: RAN aspects of eDECOR for UMTS and LTE
Increased number of E-UTRAN data bearers
Core part: Increased number of E-UTRAN data bearers
Core part: UE Positioning Accuracy Enhancements for LTE
Core part: Enhancements for high capacity stationary wireless link and introduction of 1024 QAM for LTE DL
LTE CRS-Interference Mitigation performance requirements for single RX chain UEs
LTE connectivity to 5G-CN
Core part: LTE connectivity to 5G-CN
Enhanced LTE Support for Aerial Vehicles
Core part: Enhanced LTE Support for Aerial Vehicles
Add UE Power Class 2 to band 41 intra-band contiguous LTE CA
Highly Reliable Low Latency Communication for LTE
Core part: Highly Reliable Low Latency Communication for LTE
Stopped - Core part: Signalling reduction to enable light connection for LTE
Core part: Bluetooth/WLAN measurement collection in LTE Minimization of Drive Tests (MDT)
UE requirements for network-based CRS interference mitigation for LTE
Quality of Experience (QoE) Measurement Collection for streaming services in E-UTRAN
Core part:Quality of Experience (QoE) Measurement Collection for streaming services in E-UTRAN
Core part: UL data compression in LTE
Core part: Further video enhancements for LTE
Core part: Even further enhanced MTC for LTE
Enhancements on LTE-based V2X Services
Core part: V2X phase 2 based on LTE
Core part: Enhancing LTE CA Utilization
Shortened TTI and processing time for LTE
Core part: Shortened TTI and processing time for LTE
Core part: Enhancements to LTE operation in unlicensed spectrum
Core part: Further NB-IoT enhancements
New Radio Access Technology
Core part: New Radio Access Technology
(Small) Technical Enhancements and Improvements for Rel-15
Core part: Further enhancements to Coordinated Multi-Point (CoMP) Operation for LTE
5G V2X with NR sidelink
Core part: 5G V2X with NR sidelink
Enhancements to Framework for Live Uplink Streaming
Support for NavIC Navigation Satellite System for LTE
Core part: DL MIMO efficiency enhancements for LTE
Core part: LTE-NR & NR-NR Dual Connectivity and NR CA enhancements
Core part: Additional MTC enhancements for LTE
Core part: Even further mobility enhancement in E-UTRAN
Core part: Further performance enhancement for LTE in high speed scenario
Core part: LTE-based 5G terrestrial broadcast
Core part: Additional enhancements for NB-IoT
Core part: Private Network Support for NG-RAN
NR support for high speed train scenario
Core part: NR_IAB
Core part: Support of NR Industrial Internet of Things (IoT)
Core part: NR mobility enhancements
Core part: RF requirements for NR FR1
Core part: NR RRM enhancement
Core part: SON (Self-Organising Networks) and MDT (Minimization of Drive Tests) support for NR
Core part: UE Power Saving in NR
Core part: NR positioning support
Core part: NR-based access to unlicensed spectrum
Core part: Optimisations on UE radio capability signalling NR/E-UTRA Aspects
Core part: Single Radio Voice Call Continuity from 5G to 3G
(Small) Technical Enhancements and Improvements for Rel-16
Study on NB-IoT/eMTC support for NTN
NB-IoT/eMTC support for Non-Terrestrial Networks
Core part: NB-IoT/eMTC support for Non-Terrestrial Networks
Core part: Further Multi-RAT Dual-Connectivity enhancements
Core part: Support for Multi-SIM devices for LTE/NR
Core part: New bands and bandwidth allocation for 5G terrestrial broadcast - part 1
Support for Minimization of service Interruption
Historical association · verification pendingAdditional enhancements for NB-IoT and LTE-MTC
Core part: Additional enhancements for NB-IoT and LTE-MTC
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)
Core part: Enhancements to IAB for NR
Core part: NR and MR-DC measurement gap enhancements
Core part: Solutions for NR for NTN
Core part: NR Sidelink enhancement
Core part: NR Sidelink Relay
Core part: Extending current NR operation to 71GHz
Core part: NR positioning enhancements
(Small) Technical Enhancements and Improvements for Rel-17
User Plane Integrity Protection for LTE
Core part: User Plane Integrity Protection support for EPC connected architectures
Core part: IoT (Internet of Things) NTN (non-terrestrial network) enhancements
Core part: NB-IoT (Narrowband IoT)/eMTC (enhanced Machine Type Communication) core & performance requirements for Non-Terrestrial Networks (NTN)
Core part: Enhanced LTE Support for UAV (Uncrewed Aerial Vehicles)
Further RF requirements enhancement for NR and EN-DC in frequency range 1 (FR1)
Core part: Further enhancement of data collection for SON (Self-Organising Networks)/MDT (Minimization of Drive Tests) in NR and EN-DC
NR support for dedicated spectrum less than 5MHz for FR1
Core part: NR support for dedicated spectrum less than 5MHz for FR1
Core part: Further enhancements on NR and MR-DC measurement gaps and measurements without gaps
Core part: Further NR mobility enhancements
Core part: Enhancement on NR QoE management and optimizations for diverse services
Core part: NR support for UAV (Uncrewed Aerial Vehicles)
Core part: Mobile IAB (Integrated Access and Backhaul) for NR
Enhancements of NR shared spectrum bands
(Small) Technical Enhancements and Improvements for Rel-18
Non-Terrestrial Networks (NTN) for Internet of Things (IoT) Phase 3 (for LTE)
Core part: Non-Terrestrial Networks (NTN) for Internet of Things (IoT) Phase 3
Introduction of IoT-NTN TDD mode
Core part: Introduction of IoT-NTN TDD mode
Inter-RAT mode mobility support from E-UTRAN TN to NR NTN
Core part: Inter-RAT mode mobility support from E-UTRAN TN to NR NTN
LTE-based 5G Broadcast Phase 2
Core part: LTE-based 5G Broadcast Phase 2
Minimization of Service Interruption During Core Network Failure Phase 2
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: Enhanced requirements and conductive test methodology for NR NTN and IoT NTN
(Small) Technical Enhancements and Improvements for Rel-19
Core part: Enhanced requirements for NR NTN and IoT NTN Phase 2
(Small) Technical Enhancements and Improvements for Rel-20
(Small) Technical Enhancements and Improvements for R99
UMTS
Knowledge graph
No graph edges indexed yet. The graph API is available at this JSON endpoint.