| Building Block: Node B synchronization for TDD | RANimp-NBsync | Rel-4 |
| Feature or Study Item: Low Chip Rate TDD option | LCRTDD | Rel-4 |
| Building Block: Physical layer for Low Chip Rate TDD option | LCRTDD-Phys | Rel-4 |
| Building Block: FS on Radio link performance enhancements | RInImp-Rlperf | Rel-6 |
| Work task: HS-DPCCH ACK/NACK Enhancement | RANimp-RABSE-ACKNACK | Rel-6 |
| Building Block: Beamforming Enhancements | RANimp-BFE | Rel-6 |
| Building Block: FS on Improvement of inter-frequency and inter-system measurements for 1.28 Mcps TDD | RInImp-IfIsMLCR | Rel-6 |
| Building Block: FS for the analysis of OFDM for UTRAN enhancement | RInImp-FSOFDM | Rel-6 |
| Building Block: FS on Uplink Enhancements for Dedicated Transport Channels | RInImp-FSUpDTrCh | Rel-6 |
| Building Block: FS on Analysis on Higher Chip Rates for UTRA TDD evolutions | RInImp-FSVHCRTDD | Rel-6 |
| Building Block: FS on Uplink enhancements for UTRA TDD | RInImp-FSUpEnhTDD | Rel-6 |
| Work task: Optimization of downlink channelisation code utilisation | RANimp-RABSE-CodeOptFDD | Rel-6 |
| Work task: optimization of channelisation code utilisation for 3.84 Mcps TDD | RANimp-RABSE-CodOptTDD | Rel-6 |
| Feature or Study Item: 7.68 Mcps TDD option | VHCRTDD | Rel-7 |
| Building Block: VHCRTDD: Stage 2 | VHCRTDD-Stage2 | Rel-7 |
| Building Block: VHCRTDD: Physical Layer | VHCRTDD-Phys | Rel-7 |
| Building Block: EDCHTDD: Physical Layer | EDCHTDD-Phys | Rel-7 |
| Feature or Study Item: Study on Continuous connectivity for packet data users | RANFS-cont-packet | Rel-7 |
| Building Block: Continuous connectivity for packet data users | RANimp-CPC | Rel-7 |
| Feature or Study Item: Deleted - Study on Performance Improvements in Small Cells using HSDPA/EDCH | SMALLCELLS | Rel-7 |
| Feature or Study Item: 1.28 Mcps TDD Enhanced Uplink | LCRTDD-EDCH | Rel-7 |
| Building Block: 64QAM for HSDPA (FDD) | RANimp-64QamDownlink | Rel-7 |
| Building Block: Introduction of 16QAM in HSUPA (FDD) | RANimp-16QamUplink | Rel-7 |
| Building Block: MBMS FDD Physical layer Enhancements | MBMSE-RANPhysFDD | Rel-7 |
| Building Block: MBMS TDD Physical layer Enhancements | MBMSE-RANPhysTDD | Rel-7 |
| Building Block: MBMS Low Chip Rate TDD Physical Layer Enhancement | MBMSE-RANPhysLCRTDD | Rel-7 |
| Building Block: Continuous Connectivity for packet data users for 1.28 Mcps TDD | RANimp-LCRCPC | Rel-8 |
| Feature or Study Item: Deleted - Study on Dual-Cell HSDPA operation | FS_RAN-DCHS | Rel-8 |
| Building Block: MIMO for 1.28 Mcps TDD. Linked to Rel-8 Study on Scope of future HSPA Evolution for 1.28 Mcps TDD (UID_370041) TR 25.824 | RANimp-MIMOLCR | Rel-8 |
| Building Block: Dual-Cell HSDPA operation on adjacent carriers | RANimp-DCHSDPA | Rel-8 |
| Building Block: Positioning Support for LTE | LCS_LTE | Rel-9 |
| Feature or Study Item: LTE improvements | LTEimp | Rel-9 |
| Feature or Study Item: Study on E-UTRAN Mobility Evaluation and Enhancement | FS_EUTRAN_mob | Rel-9 |
| Building Block: Cell Portion for 1.28 Mcps TDD | CP_LCRTDD | Rel-9 |
| Feature or Study Item: Multi-User Multiple-Input and Multiple-Output (MU-MIMO) for 1.28Mcps TDD | MUMIMO_LCR_TDD | Rel-10 |
| Building Block: Core part: MU-MIMO for 1.28Mcps TDD | MUMIMO_LCR_TDD-Core | Rel-10 |
| Feature or Study Item: Carrier Aggregation for LTE | LTE_CA | Rel-10 |
| Feature or Study Item: Enhanced Downlink Multiple Antenna Transmission for LTE | LTE_eDL_MIMO | Rel-10 |
| Feature or Study Item: Uplink Multiple Antenna Transmission for LTE | LTE_UL_MIMO | Rel-10 |
| Feature or Study Item: Deleted - Latency reductions for LTE | LTE_LATRED | Rel-10 |
| Feature or Study Item: Relays for LTE | LTE_Relay | Rel-10 |
| Feature or Study Item: Study on Coordinated Multi-Point operation for LTE | FS_CoMP_LTE | Rel-11 |
| Feature or Study Item: Network-Based Positioning Support for LTE | LCS_LTE-NBPS | Rel-11 |
| Building Block: Core part: Network-Based Positioning Support for LTE | LCS_LTE-NBPS-Core | Rel-11 |
| Feature or Study Item: Further Enhancements to CELL_FACH | Cell_FACH_enh | Rel-11 |
| Feature or Study Item: Further Enhanced Non CA-based ICIC for LTE | eICIC_enh_LTE | Rel-11 |
| Feature or Study Item: Eight carrier HSDPA | 8C_HSDPA | Rel-11 |
| Feature or Study Item: Uplink Transmit Diversity for HSPA | HSPA_UL_TxDiv | Rel-11 |
| Feature or Study Item: Study on further Downlink MIMO enhancements for LTE-Advanced | FS_LTE_eDL_MIMO_enh | Rel-11 |
| Feature or Study Item: Study on Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation | FS_LTE_TDD_eIMTA | Rel-11 |
| Feature or Study Item: Coordinated Multi-Point Operation for LTE | COMP_LTE | Rel-11 |
| Feature or Study Item: Enhancement of Minimization of Drive Tests for E-UTRAN and UTRAN | eMDT_UMTSLTE | Rel-11 |
| Feature or Study Item: HSDPA Multiflow Data Transmission | HSDPA_MFTX | Rel-11 |
| Feature or Study Item: Four Branch MIMO transmission for HSDPA | 4Tx_HSDPA | Rel-11 |
| Feature or Study Item: Study on LTE Coverage Enhancements | FS_Cov_Enh_LTE | Rel-11 |
| Feature or Study Item: Study on Enhanced performance requirement for LTE UE | FS_enh_perf_UE_LTE | Rel-11 |
| Feature or Study Item: Enhanced downlink control channel(s) for LTE Advanced | LTE_enh_dl_ctrl | Rel-11 |
| Feature or Study Item: Study on HSPA feedback and signalling efficiency enhancements for LCR TDD | FS_LCRTDD_HSPAenh | Rel-11 |
| Feature or Study Item: E-UTRA Small cell enhancements - Physical layer aspects | LTE_SC_enh_L1 | Rel-12 |
| Building Block: Core part: Dual connectivity for LTE | LTE_SC_enh_dualC-Core | Rel-12 |
| Building Block: Core part: E-UTRA Small cell enhancements - Physical layer aspects | LTE_SC_enh_L1-Core | Rel-12 |
| Building Block: Core part: Inter-eNB Coordinated Multi-Point (CoMP) for LTE | COMP_LTE_IeNB-Core | Rel-12 |
| Building Block: Core part: Further Enhanced Uplink (EUL) enhancements | EDCH_enh-Core | Rel-12 |
| Building Block: Core part: Heterogeneous Networks enhancements | UTRA_HetNet_enh-Core | Rel-12 |
| Building Block: Core part: Enhanced Broadcast of System Information | UTRA_SIBenh-Core | Rel-12 |
| Building Block: Core part: Further MBMS operations support for E-UTRAN | MBMS_LTE_OS-Core | Rel-12 |
| Feature or Study Item: Study on Network-Assisted Interference Cancellation and Suppression for LTE | FS_LTE_NAICS | Rel-12 |
| Feature or Study Item: Further Downlink MIMO Enhancement for LTE Advanced | LTE_eDL_MIMO_enh | Rel-12 |
| Feature or Study Item: Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation | LTE_TDD_eIMTA | Rel-12 |
| Building Block: Core part: Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation | LTE_TDD_eIMTA-Core | Rel-12 |
| Building Block: Core part: HSPA signalling enhancements for more efficient resource usage for LCR TDD | LCR_TDD_HSPA_sign_enh-Core | Rel-12 |
| Feature or Study Item: Study on Downlink Multiuser Superposition Transmission for LTE | FS_LTE_MUST | Rel-13 |
| Feature or Study Item: Downlink TPC Enhancements for UMTS | UTRA_EDL_TPC | Rel-13 |
| Building Block: Core part: Network-Assisted Interference Cancellation and Suppression for UMTS | UTRA_NAICS-Core | Rel-13 |
| Work task: Core part: Narrowband Internet of Things (IOT) | NB_IOT-Core | Rel-13 |
| Work task: Core part: LTE Carrier Aggregation Enhancement Beyond 5 Carriers | LTE_CA_enh_b5C-Core | Rel-13 |
| Work task: Core part: Support of EVS over UTRAN CS | EVSoCS_UTRAN-Core | Rel-13 |
| Building Block: Core part: Enhanced LTE Device to Device Proximity Services | LTE_eD2D_Prox-Core | Rel-13 |
| Building Block: Core part: Further LTE Physical Layer Enhancements for MTC | LTE_MTCe2_L1-Core | Rel-13 |
| Feature or Study Item: Study on Small data transmission enhancements for UMTS | FS_UTRA_SDATA | Rel-13 |
| Feature or Study Item: Study on Downlink enhancements for UMTS | FS_UTRA_EDL | Rel-13 |
| Feature or Study Item: Study on Elevation Beamforming/Full-Dimension (FD) MIMO for LTE | FS_LTE_EBF_FDMIMO | Rel-13 |
| Feature or Study Item: Study on Licensed-Assisted Access using LTE | FS_LTE_LAA | Rel-13 |
| Building Block: Enhancement on the DSCH hard split mode | RInImp-DSCHhsp | Rel-5 |
| Building Block: Node B Synchronisation for 1.28 Mcps TDD | RANimp-NBSLCR | Rel-5 |
| Building Block: FS on USTS | RInImp-USTS | Rel-5 |
| Feature or Study Item: Enhancements on Full-Dimension (FD) MIMO for LTE | LTE_eFDMIMO | Rel-14 |
| Feature or Study Item: Uplink Capacity Enhancements for LTE | LTE_UL_CAP_enh | Rel-14 |
| Feature or Study Item: eMBMS enhancements for LTE | MBMS_LTE_enh2 | Rel-14 |
| Feature or Study Item: SRS (sounding reference signal) switching between LTE component carriers | LTE_SRS_switch | Rel-14 |
| Feature or Study Item: Downlink Multiuser Superposition Transmission for LTE | LTE_MUST | Rel-14 |
| Building Block: Study on Multi-Carrier Enhancements for UMTS | FS_UTRA_MCe | Rel-14 |
| Feature or Study Item: Study on further enhancements to Coordinated Multi-Point (CoMP) Operation for LTE | FS_feCOMP_LTE | Rel-14 |
| Feature or Study Item: Study on New Radio (NR) Access Technology | FS_NR_newRAT | Rel-14 |
| Building Block: Core part: Enhancements on Full-Dimension (FD) MIMO for LTE | LTE_eFDMIMO-Core | Rel-14 |
| Building Block: Core part: Uplink Capacity Enhancements for LTE | LTE_UL_CAP_enh-Core | Rel-14 |
| Building Block: Core part: eMBMS enhancements for LTE | MBMS_LTE_enh2-Core | Rel-14 |
| Building Block: Core part: SRS (sounding reference signal) switching between LTE component carriers | LTE_SRS_switch-Core | Rel-14 |
| Building Block: Core part: Downlink Multiuser Superposition Transmission for LTE | LTE_MUST-Core | Rel-14 |
| Building Block: Core part: Enhanced LAA for LTE | LTE_eLAA-Core | Rel-14 |
| Building Block: Core part: Support for V2V services based on LTE sidelink | LTE_SL_V2V-Core | Rel-14 |
| Feature or Study Item: Support of EVS in 3G Circuit-Switched networks | EVSoCS | Rel-13 |
| Feature or Study Item: Further LTE Physical Layer Enhancements for MTC | LTE_MTCe2_L1 | Rel-13 |
| Feature or Study Item: Study on channel model for frequency spectrum above 6 GHz | FS_6GHz_CH_model | Rel-14 |
| Work task: RAN1 Study on LTE-based V2X Services | FS_LTE_V2X | Rel-14 |
| Feature or Study Item: Study on Indoor Positioning Enhancements for UTRA and LTE | FS_UTRA_LTE_iPos_enh | Rel-13 |
| Building Block: Beamforming requirements for UE | RANimp-BFR-UE | Rel-5 |
| Building Block: Support of Site Selection Diversity Transmission in UTRAN | RANimp-SSDT | Rel-5 |
| Feature or Study Item: Network-Assisted Interference Cancellation and Suppression for UMTS | UTRA_NAICS | Rel-13 |
| Building Block: RAN aspects of CIoT aka Narrowband Internet of Things (IOT) | NB_IOT | Rel-13 |
| Building Block: Physical Layer for High Speed Downlink Packet Access | HSDPA-Phys | Rel-5 |
| Feature or Study Item: HSPA signalling enhancements for more efficient resource usage for LCR | LCR_TDD_HSPA_sign_enh | Rel-12 |
| Feature or Study Item: Study on LTE Device-to-Device Proximity Services - Radio Aspects | FS_LTE_D2D_Prox | Rel-12 |
| Feature or Study Item: Study on Scalable UMTS FDD bandwidth | FS_UTRA_SCAL | Rel-12 |
| Feature or Study Item: Study on Dedicated Channel (DCH) enhancements for UMTS | FS_UTRA_DCHenh | Rel-12 |
| Feature or Study Item: Study on Small Cell Enhancements for E-UTRA and E-UTRAN – Physical-layer aspects | FS_LTE_SC_enh_L1 | Rel-12 |
| Feature or Study Item: Study on 3D-channel model for Elevation Beamforming and FD-MIMO studies for LTE | FS_LTE_3D_channel | Rel-12 |
| Feature or Study Item: Study on Further Enhanced Uplink (EUL) enhancements | FS_EDCH_enh | Rel-12 |
| Building Block: Deleted - Core part: Carrier based HetNet ICIC for LTE | LTE_CA_HetNet_ICIC-Core | Rel-12 |
| Feature or Study Item: Study on Enhanced Multiuser Transmissions and Network | FS_MUIC_LTE | Rel-13 |
| Feature or Study Item: Study on Network-Assisted Interference Cancellation and Suppression for UMTS | FS_UTRA_NAICS | Rel-13 |
| Feature or Study Item: Study on Enhanced Multiuser Transmissions and Network Assisted Interference Cancellation for LTE | FS_LTE_MUTX_NAIC | Rel-13 |
| Building Block: Support of EVS over UTRAN CS | EVSoCS_UTRAN | Rel-13 |
| Feature or Study Item: Deleted - Carrier based HetNet ICIC for LTE | LTE_CA_HetNet_ICIC | Rel-12 |
| Building Block: Core part: Network-Assisted Interference Cancellation and Suppression for LTE | LTE_NAICS-Core | Rel-12 |
| Feature or Study Item: Further MBMS operations support for E-UTRAN | MBMS_LTE_OS | Rel-12 |
| Feature or Study Item: Dedicated Channel (DCH) enhancements for UMTS | UTRA_DCHenh | Rel-12 |
| Building Block: Core part: Dedicated Channel (DCH) enhancements for UMTS | UTRA_DCHenh-Core | Rel-12 |
| Building Block: Core part: Low cost & enhanced coverage MTC UE for LTE | LC_MTC_LTE-Core | Rel-12 |
| Building Block: Core part: LTE TDD-FDD joint operation including Carrier Aggregation | LTE_CA_TDD_FDD-Core | Rel-12 |
| Building Block: Core part: LTE Coverage Enhancements | Cov_Enh_LTE-Core | Rel-12 |
| Feature or Study Item: Low cost & enhanced coverage MTC UE for LTE | LC_MTC_LTE | Rel-12 |
| Feature or Study Item: LTE TDD-FDD joint operation including Carrier Aggregation | LTE_CA_TDD_FDD | Rel-12 |
| Feature or Study Item: LTE Coverage Enhancements | Cov_Enh_LTE | Rel-12 |
| Feature or Study Item: Study on Coordinated Multi-Point (CoMP) operation for LTE with Non-Ideal Backhaul | FS_COMP_LTE_nibackhaul | Rel-12 |
| Work task: Core part: LTE-based V2X Services | LTE_V2X-Core | Rel-14 |
| Building Block: Core part: Further enhanced MTC for LTE | LTE_feMTC-Core | Rel-14 |
| Building Block: Core part: Enhancements of NB-IoT | NB_IOTenh-Core | Rel-14 |
| Feature or Study Item: Study on RF and EMC requirements for active Antenna Array System (AAS) Base Station | FS_AAS_BS_LTE_UTRA | Rel-12 |
| Feature or Study Item: Deleted - Study on Mobile Relay for E-UTRA | FS_LTE_mobRelay | Rel-12 |
| Feature or Study Item: Study on Provision of low-cost MTC UEs based on LTE | FS_LC_MTC_LTE | Rel-12 |
| Feature or Study Item: Licensed-Assisted Access using LTE | LTE_LAA | Rel-13 |
| Feature or Study Item: Elevation Beamforming/Full-Dimension (FD) MIMO for LTE | LTE_EBF_FDMIMO | Rel-13 |
| Building Block: Core part: Downlink TPC Enhancements for UMTS | UTRA_EDL_TPC-Core | Rel-13 |
| Work task: Core part: LTE Device to Device Proximity Services | LTE_D2D_Prox-Core | Rel-12 |
| Feature or Study Item: Dual connectivity for LTE | LTE_SC_enh_dualC | Rel-12 |
| Building Block: Core part: Further Downlink MIMO Enhancement for LTE Advanced | LTE_eDL_MIMO_enh-Core | Rel-12 |
| Building Block: Deleted - Core part: New Carrier Type for LTE | LTE_NCT-Core | Rel-12 |
| Feature or Study Item: Study on UMTS heterogeneous networks | FS_UTRA_HetNet | Rel-12 |
| Feature or Study Item: Deleted - New Carrier Type for LTE | LTE_NCT | Rel-12 |
| Feature or Study Item: Deleted - Study on Scalable UMTS FDD bandwidth by Filtering | FS_UTRA_SCAL_FILT | Rel-12 |
| Feature or Study Item: Inter-eNB Coordinated Multi-Point (CoMP) for LTE | COMP_LTE_IeNB | Rel-12 |
| Feature or Study Item: UMTS Heterogeneous Networks enhancements | UTRA_HetNet_enh | Rel-12 |
| Feature or Study Item: Enhanced Broadcast of System Information | UTRA_SIBenh | Rel-12 |
| Building Block: Core part: Licensed-Assisted Access using LTE | LTE_LAA-Core | Rel-13 |
| Building Block: Core part: Elevation Beamforming/Full-Dimension (FD) MIMO for LTE | LTE_EBF_FDMIMO-Core | Rel-13 |
| Building Block: Core part: Further Enhancements to CELL_FACH | Cell_FACH_enh-Core | Rel-11 |
| Building Block: Core part: Further Enhanced Non CA-based ICIC for LTE | eICIC_enh_LTE-Core | Rel-11 |
| Work task: Core part: LTE Carrier Aggregation Enhancements | LTE_CA_enh-Core | Rel-11 |
| Building Block: Core part: LTE E850 - Lower Band for Region 2 (non-US), Band 27 | LTE_e850_LB-Core | Rel-11 |
| Building Block: Core part: Uplink Transmit Diversity for HSPA - Open Loop | HSPA_UL_TxDiv-OL-Core | Rel-11 |
| Feature or Study Item: Study on HetNet mobility enhancements for LTE | FS_HetNet_eMOB_LTE | Rel-11 |
| Feature or Study Item: Deleted - Study on Enhanced Uplink Transmission for LTE | FS_eUL_TX_LTE | Rel-11 |
| Feature or Study Item: Rel-11 LTE Carrier Aggregation | LTE_CA_Rel-11 | Rel-11 |
| Building Block: Core part: MIMO with 64QAM for HSUPA | MIMO_64QAM_HSUPA-Core | Rel-11 |
| Building Block: Core part: Enhanced downlink control channel(s) for LTE Advanced | LTE_enh_dl_ctrl-Core | Rel-11 |
| Building Block: Core part: Carrier Aggregation for LTE | LTE_CA-Core | Rel-10 |
| Building Block: Core part: Enhanced Downlink Multiple Antenna Transmission for LTE | LTE_eDL_MIMO-Core | Rel-10 |
| Building Block: Core part: UL multiple antenna transmission for LTE | LTE_UL_MIMO-Core | Rel-10 |
| Building Block: Deleted - Core part: Latency reductions for LTE | LTE_LATRED-Core | Rel-10 |
| Building Block: Core part: Relays for LTE | LTE_Relay-Core | Rel-10 |
| Building Block: Core part: Four carrier HSDPA | 4C_HSDPA-Core | Rel-10 |
| Building Block: Core part: Enhanced Inter-Cell Interference Control (ICIC) for non-Carrier Aggregation (CA) based deployments of heterogeneous networks for LTE | eICIC_LTE-Core | Rel-10 |
| Feature or Study Item: Network-Assisted Interference Cancellation and Suppression for LTE | LTE_NAICS | Rel-12 |
| Feature or Study Item: 1.28 Mcps TDD Multi-carrier HSUPA | TDD_MC_HSUPA | Rel-10 |
| Building Block: Core part: Coordinated Multi-Point Operation for LTE – Uplink | COMP_LTE_UL-Core | Rel-11 |
| Building Block: Core part: Enhancement of Minimization of Drive Tests for E-UTRAN and UTRAN | eMDT_UMTSLTE-Core | Rel-11 |
| Building Block: Core part: HSDPA Multiflow Data Transmission | HSDPA_MFTX-Core | Rel-11 |
| Feature or Study Item: Four carrier HSDPA | 4C_HSDPA | Rel-10 |
| Feature or Study Item: Study on Solutions for Energy Saving within UTRA Node B | FS_Energy_UMTS | Rel-10 |
| Feature or Study Item: Study on RAN improvements for Machine-Type Communications | FS_NIMTC_RAN | Rel-11 |
| Building Block: Core part: Four Branch MIMO transmission for HSDPA | 4Tx_HSDPA-Core | Rel-11 |
| Feature or Study Item: MIMO with 64QAM for HSUPA | MIMO_64QAM_HSUPA | Rel-11 |
| Building Block: LTE Carrier Aggregation Enhancements | LTE_CA_enh | Rel-11 |
| Feature or Study Item: LTE E850 - Lower Band for Region 2 (non-US), Band 27 | LTE_e850_LB | Rel-11 |
| Building Block: Core part: Eight carrier HSDPA | 8C_HSDPA-Core | Rel-11 |
| Building Block: Core part: Uplink Transmit Diversity for HSPA - Closed Loop | HSPA_UL_TxDiv-CL-Core | Rel-11 |
| Feature or Study Item: Study on Uplink MIMO | FS_UTRA_UL_MIMO | Rel-11 |
| Feature or Study Item: Study on HSDPA Multipoint Transmission | FS_HSDPA_MP_TX | Rel-11 |
| Feature or Study Item: Study on LTE-Advanced | FS_RAN_LTEA | Rel-9 |
| Feature or Study Item: LCS for LTE and EPS | LCS_LTE_EPS | Rel-9 |
| Building Block: Dual-Cell HSUPA | RANimp-DC_HSUPA | Rel-9 |
| Building Block: Combination of DC-HSDPA with MIMO | RANimp-DC_MIMO | Rel-9 |
| Feature or Study Item: Study on Enhanced Broadcast of System Information | FS_UTRA_SIBenh | Rel-12 |
| Building Block: Enhanced Dual-Layer transmission for LTE | LTEimp-eDL | Rel-9 |
| Building Block: Transmit Antenna Array (TxAA) extension for non-MIMO UEs | RANimp-TxAA_nonMIMO | Rel-9 |
| Feature or Study Item: Study on Scope of future HSPA Evolution for 1.28 Mcps TDD | FS_RAN-LCRTDDHSPAEvo | Rel-8 |
| Feature or Study Item: Study on Synchronized E-DCH for UTRA FDD | FS_RAN-UplinkSync | Rel-8 |
| Building Block: Combination of 64QAM and MIMO for HSDPA (FDD) | RANimp-64QamMimoHsdpa | Rel-8 |
| Building Block: Core part: Coordinated Multi-Point Operation for LTE – Downlink | COMP_LTE_DL-Core | Rel-11 |
| Building Block: LTE – Physical Layer | LTE-Phys | Rel-8 |
| Building Block: MIMO - Physical layer | MIMO-Phys | Rel-7 |
| Building Block: Optimization of channelisation code utilisation for 1.28 Mcps TDD | RANimp-RABSE-CodOptLCRTDD | Rel-7 |
| Building Block: 1.28 Mcps TDD Enhanced Uplink: Physical Layer | LCRTDD-EDCH-Phys | Rel-7 |
| Feature or Study Item: MBMS Enhancements | MBMSE | Rel-7 |
| Building Block: 7.68 Mcps TDD Enhanced Uplink | RANimp-VHCRTDD-EDCH | Rel-7 |
| Feature or Study Item: Multiple-Input Multiple-Output (MIMO) antennas | MIMO | Rel-7 |
| Feature or Study Item: Deleted - UTRAN 2 ms TTI uplink range improvement | RANimp-2mTTI_ULimp | Rel-10 |
| Feature or Study Item: Study on Improvements of distributed antenna for 1.28Mcps TDD | FS_distr_ant_LCR_TDD | Rel-10 |
| Feature or Study Item: Enhanced Inter-Cell Interference Control (ICIC) for non-Carrier Aggregation (CA) based deployments of heterogeneous networks for LTE | eICIC_LTE | Rel-10 |
| Building Block: DSCH power control improvement in soft handover | RInImp-DSCHsho | Rel-4 |
| Feature or Study Item: 3.84 Mcps TDD MBMS over a Single Frequency Network (MBSFN) Integrated Mobile Broadcast | MBSFN-DOB | Rel-8 |
| Building Block: 64QAM for 1.28 Mcps TDD HSDPA | RANimp-64Qam1.28TDD | Rel-8 |
| Feature or Study Item: FDD Enhanced Uplink | EDCH | Rel-6 |
| Building Block: FDD Enhanced Uplink - Physical Layer | EDCH-Phys | Rel-6 |
| Feature or Study Item: Study on evaluation methodology of new V2X use cases for LTE and NR | FS_LTE_NR_V2X_eval | Rel-15 |
| Building Block: Core part: Shortened TTI and processing time for LTE | LTE_sTTIandPT-Core | Rel-15 |
| Feature or Study Item: Study on NR to support non-terrestrial networks | FS_NR_nonterr_nw | Rel-15 |
| Feature or Study Item: Study on scheduling enhancements with CA for UMTS | FS_UTRA_CA_sched_enh | Rel-15 |
| Feature or Study Item: Even further enhanced MTC for LTE | LTE_eMTC4 | Rel-15 |
| Feature or Study Item: Further enhancements to Coordinated Multi-Point (CoMP) Operation for LTE | feCOMP_LTE | Rel-15 |
| Feature or Study Item: Highly Reliable Low Latency Communication for LTE | LTE_HRLLC | Rel-15 |
| Feature or Study Item: Enhancements on LTE-based V2X Services | LTE_eV2X | Rel-15 |
| Feature or Study Item: Enhancements for high capacity stationary wireless link and introduction of 1024 QAM for LTE DL | LTE_1024QAM_DL | Rel-15 |
| Feature or Study Item: Enhancements to LTE operation in unlicensed spectrum | LTE_unlic | Rel-15 |
| Feature or Study Item: Further NB-IoT enhancements | NB_IOTenh2 | Rel-15 |
| Feature or Study Item: New Radio Access Technology | NR_newRAT | Rel-15 |
| Building Block: Study on a simplified HS-SCCH for UMTS | FS_UTRA_simple_HSSCCH | Rel-15 |
| Building Block: Core part: Even further enhanced MTC for LTE | LTE_eMTC4-Core | Rel-15 |
| Building Block: Core part: Further enhancements to Coordinated Multi-Point (CoMP) Operation for LTE | feCOMP_LTE-Core | Rel-15 |
| Building Block: Core part: Highly Reliable Low Latency Communication for LTE | LTE_HRLLC-Core | Rel-15 |
| Building Block: Core part: V2X phase 2 based on LTE | LTE_eV2X-Core | Rel-15 |
| Building Block: Core part: Enhancements for high capacity stationary wireless link and introduction of 1024 QAM for LTE DL | LTE_1024QAM_DL-Core | Rel-15 |
| Building Block: Core part: Enhancements to LTE operation in unlicensed spectrum | LTE_unlic-Core | Rel-15 |
| Building Block: Core part: Further NB-IoT enhancements | NB_IOTenh2-Core | Rel-15 |
| Building Block: Core part: New Radio Access Technology | NR_newRAT-Core | Rel-15 |
| Building Block: Study on NR-based access to unlicensed spectrum | FS_NR_unlic | Rel-16 |
| Feature or Study Item: Study on Non-Orthogonal Multiple Access (NOMA) for NR | FS_NR_NOMA | Rel-16 |
| Feature or Study Item: Addition of NR UE measurements to enable OTA conformance testing | NR_OTA_Uemeas | Rel-16 |
| Building Block: Core part: Addition of NR UE measurements to enable OTA conformance testing | NR_OTA_Uemeas-Core | Rel-16 |
| Building Block: Study on channel modeling for indoor industrial scenarios | FS_IIIOT_CM | Rel-16 |
| Feature or Study Item: Cross Link Interference (CLI) handling and Remote Interference Management (RIM) for NR | NR_CLI_RIM | Rel-16 |
| Feature or Study Item: Additional MTC enhancements for LTE | LTE_eMTC5 | Rel-16 |
| Feature or Study Item: Additional enhancements for NB-IoT | NB_IOTenh3 | Rel-16 |
| Feature or Study Item: Enhancements on MIMO for NR | NR_eMIMO | Rel-16 |
| Feature or Study Item: DL MIMO efficiency enhancements for LTE | LTE_DL_MIMO_EE | Rel-16 |
| Building Block: Study on LTE-based 5G terrestrial broadcast | FS_LTE_terr_bcast | Rel-16 |
| Building Block: Study on NR positioning support | FS_NR_pos | Rel-16 |
| Feature or Study Item: Study on remote interference management for NR | FS_NR_RIM | Rel-16 |
| Building Block: Study on UE power saving in NR | FS_NR_UE_pow_sav | Rel-16 |
| Building Block: Study on physical layer enhancements for NR UR Low Latency Cases | FS_NR_L1enh_URLLC | Rel-16 |
| Feature or Study Item: Study on NR Vehicle-to-Everything (V2X) | FS_NR_V2X | Rel-16 |
| Building Block: Core part: Cross Link Interference (CLI) handling and Remote Interference Management (RIM) for NR | NR_CLI_RIM-Core | Rel-16 |
| Building Block: Core part: Additional MTC enhancements for LTE | LTE_eMTC5-Core | Rel-16 |
| Building Block: Core part: Additional enhancements for NB-IoT | NB_IOTenh3-Core | Rel-16 |
| Building Block: Core part: Enhancements on MIMO for NR | NR_eMIMO-Core | Rel-16 |
| Building Block: Core part: DL MIMO efficiency enhancements for LTE | LTE_DL_MIMO_EE-Core | Rel-16 |
| Feature or Study Item: NR-based access to unlicensed spectrum | NR_unlic | Rel-16 |
| Feature or Study Item: 2-step RACH for NR | NR_2step_RACH | Rel-16 |
| Building Block: Core part: NR-based access to unlicensed spectrum | NR_unlic-Core | Rel-16 |
| Building Block: Core part: 2-step RACH for NR | NR_2step_RACH-Core | Rel-16 |
| Feature or Study Item: Physical Layer Enhancements for NR Ultra-Reliable and Low Latency Communication (URLLC) | NR_L1enh_URLLC | Rel-16 |
| Feature or Study Item: UE Power Saving in NR | NR_UE_pow_sav | Rel-16 |
| Feature or Study Item: LTE-based 5G terrestrial broadcast | LTE_terr_bcast | Rel-16 |
| Feature or Study Item: NR positioning support | NR_pos | Rel-16 |
| Feature or Study Item: 5G V2X with NR sidelink | 5G_V2X_NRSL | Rel-16 |
| Building Block: Core part: Physical Layer Enhancements for NR URLLC | NR_L1enh_URLLC-Core | Rel-16 |
| Building Block: Core part: UE Power Saving in NR | NR_UE_pow_sav-Core | Rel-16 |
| Building Block: Core part: LTE-based 5G terrestrial broadcast | LTE_terr_bcast-Core | Rel-16 |
| Building Block: Core part: NR positioning support | NR_pos-Core | Rel-16 |
| Building Block: Core part: 5G V2X with NR sidelink | 5G_V2X_NRSL-Core | Rel-16 |
| Building Block: Perf. part: Further enhancements on MIMO for NR | NR_feMIMO-Perf | Rel-17 |
| Building Block: Perf. part: Extending current NR operation to 71GHz | NR_ext_to_71GHz-Perf | Rel-17 |
| Building Block: Perf. part: Additional enhancements for NB-IoT and LTE-MTC | NB_IOTenh4_LTE_eMTC6-Perf | Rel-17 |
| Building Block: Core part: Further enhancements on MIMO for NR | NR_FeMIMO-Core | Rel-17 |
| Building Block: Core part: Extending current NR operation to 71GHz | NR_ext_to_71GHz-Core | Rel-17 |
| Building Block: Core part: NR Sidelink enhancement | NR_SL_enh-Core | Rel-17 |
| Building Block: Core part: NR DSS | NR_DSS-Core | Rel-17 |
| Building Block: Core part: Additional enhancements for NB-IoT and LTE-MTC | NB_IOTenh4_LTE_eMTC6-Core | Rel-17 |
| Feature or Study Item: Study on XR (Extended Reality) evaluations for NR | FS_NR_XR_eval | Rel-17 |
| Feature or Study Item: Study on NB-IoT/eMTC support for NTN | FS_LTE_NBIOT_eMTC_NTN | Rel-17 |
| Building Block: Study on NR positioning enhancements | FS_NR_pos_enh | Rel-17 |
| Building Block: Study on support of reduced capability NR devices | FS_NR_redcap | Rel-17 |
| Building Block: Study on on NR coverage enhancements | FS_NR_cov_enh | Rel-17 |
| Feature or Study Item: Study on supporting NR from 52.6 GHz to 71 GHz | FS_NR_52_to_71GHz | Rel-17 |
| Feature or Study Item: Extending current NR operation to 71GHz | NR_ext_to_71GHz | Rel-17 |
| Feature or Study Item: NB-IoT/eMTC support for Non-Terrestrial Networks | LTE_NBIOT_eMTC_NTN | Rel-17 |
| Building Block: Core part: NB-IoT/eMTC support for Non-Terrestrial Networks | LTE_NBIOT_eMTC_NTN-Core | Rel-17 |
| Feature or Study Item: New bands and bandwidth allocation for 5G terrestrial broadcast - part 1 | LTE_terr_bcast_bands_part1 | Rel-17 |
| Building Block: Core part: New bands and bandwidth allocation for 5G terrestrial broadcast - part 1 | LTE_terr_bcast_bands_part1-Core | Rel-17 |
| Building Block: Core part: NR positioning enhancements | NR_pos_enh-Core | Rel-17 |
| Building Block: Core part: NR_cov_enh | NR_cov_enh-Core | Rel-17 |
| Building Block: Core part: NR_redcap | NR_redcap-Core | Rel-17 |
| Building Block: Perf. part: NR positioning enhancements | NR_pos_enh-Perf | Rel-17 |
| Building Block: Perf. part: NR_cov_enh | NR_cov_enh-Perf | Rel-17 |
| Building Block: Perf. part: NR_redcap | NR_redcap-Perf | Rel-17 |
| Building Block: Study on network energy savings for NR | FS_Netw_Energy_NR | Rel-18 |
| Building Block: Study on expanded and improved NR positioning | FS_NR_pos_enh2 | Rel-18 |
| Feature or Study Item: Study on evolution of NR duplex operation | FS_NR_duplex_evo | Rel-18 |
| Building Block: Study on NR network-controlled repeaters | FS_NR_netcon_repeater | Rel-18 |
| Feature or Study Item: Study on Artificial Intelligence (AI)/Machine Learning (ML) for NR air interface | FS_NR_AIML_air | Rel-18 |
| Feature or Study Item: Study on low-power wake-up signal and receiver for NR | FS_NR_LPWUS | Rel-18 |
| Building Block: Study on further NR RedCap (reduced capability) UE complexity reduction | FS_NR_redcap_enh | Rel-18 |
| Building Block: Core part: Enhancement of NR Dynamic Spectrum Sharing (DSS) | NR_DSS_enh-Core | Rel-18 |
| Building Block: Core part: Multi-carrier enhancements for NR | NR_MC_enh-Core | Rel-18 |
| Building Block: Core part: Further NR coverage enhancements | NR_cov_enh2-Core | Rel-18 |
| Building Block: Core part: NR MIMO evolution for downlink and uplink | NR_MIMO_evo_DL_UL-Core | Rel-18 |
| Building Block: Core part: NR sidelink evolution | NR_SL_enh2-Core | Rel-18 |
| Building Block: Perf. part: Enhancement of NR Dynamic Spectrum Sharing (DSS) | NR_DSS_enh-Perf | Rel-18 |
| Building Block: Perf. part: Multi-carrier enhancements for NR | NR_MC_enh-Perf | Rel-18 |
| Building Block: Perf. part: Further NR coverage enhancements | NR_cov_enh2-Perf | Rel-18 |
| Building Block: Perf. part: NR MIMO evolution for downlink and uplink | NR_MIMO_evo_DL_UL-Perf | Rel-18 |
| Building Block: Perf. part: NR sidelink evolution | NR_SL_enh2-Perf | Rel-18 |
| Building Block: Core part: NR network-controlled repeaters | NR_netcon_repeater-Core | Rel-18 |
| Building Block: Core part: Enhanced support of reduced capability NR devices | NR_redcap_enh-Core | Rel-18 |
| Building Block: Perf. part: NR network-controlled repeaters | NR_netcon_repeater-Perf | Rel-18 |
| Building Block: Perf. part: Enhanced support of reduced capability NR devices | NR_redcap_enh-Perf | Rel-18 |
| Building Block: Core part: Network energy savings for NR | Netw_Energy_NR-Core | Rel-18 |
| Building Block: Core part: Expanded and improved NR positioning | NR_pos_enh2-Core | Rel-18 |
| Building Block: Core part: NR MIMO Phase 5 | NR_MIMO_Ph5-Core | Rel-19 |
| Building Block: Core part: Evolution of NR duplex operation: Sub-band full duplex (SBFD) | NR_duplex_evo-Core | Rel-19 |
| Building Block: Core part: Artificial Intelligence (AI)/Machine Learning (ML) for NR air interface | NR_AIML_air-Core | Rel-19 |
| Building Block: Core part: Low-power wake-up signal and receiver for NR (LP-WUS/WUR) | NR_LPWUS-Core | Rel-19 |
| Building Block: Core part: Enhancements of Network energy savings for NR | Netw_Energy_NR_enh-Core | Rel-19 |
| Feature or Study Item: Study on channel modelling enhancements for 7-24GHz for NR | FS_NR_7_24GHz_CHmod | Rel-19 |
| Feature or Study Item: Study on solutions for Ambient IoT (Internet of Things) in NR | FS_Ambient_IoT_solutions | Rel-19 |
| Feature or Study Item: Study on channel modelling for Integrated Sensing And Communication (ISAC) for NR | FS_Sensing_NR | Rel-19 |
| Feature or Study Item: Study on Artificial Intelligence (AI)/Machine Learning (ML) for NR air interface Phase 2 | FS_NR_AIML_air_Ph2 | Rel-19 |
| Building Block: Core part: LTE-based 5G Broadcast Phase 2 | LTE_terr_bcast_Ph2-Core | Rel-19 |
| Building Block: Core part: Solutions for Ambient IoT (Internet of Things) in NR | Ambient_IoT_Solutions-Core | Rel-19 |
| Building Block: Core part: Multi-carrier enhancements for NR Phase 2 | NR_MC_enh2-Core | Rel-19 |
| Building Block: Core part: Introduction of IoT-NTN TDD mode | IoT_NTN_TDD-Core | Rel-19 |
