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Meeting notes summarizing technical discussions, proposals, and agreements on 5G NR FR1 UE RF enhancement and MIMO configurations across multiple companies with references to T-doc numbers and change requests.
Year:
2021
Region / City:
International / Remote electronic meeting
Subject:
5G NR UE RF and MIMO enhancements
Document type:
Meeting summary
Organization:
3GPP TSG-RAN WG4
Authors:
Huawei, HiSilicon, ZTE, CMCC, OPPO, Apple, Nokia
Agenda items:
12.2.1, 12.2.2.1, 12.2.2.4
Period:
Jan 25 – Feb 5, 2021
Status:
Information
Topics:
Work plan for Rel-17 FR1 UE RF enhancement, UL MIMO configuration for SUL bands, intra-band contiguous UL CA PC2, 4×4 DL MIMO for CA_n77
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Year:
2020
Region / City:
E-meeting
Theme:
Telecommunications
Document Type:
Technical Proposal
Author:
Huawei, HiSilicon
Target Audience:
Industry professionals in telecommunications
Period of validity:
August 17th – 28th, 2020
Approval Date:
Not specified
Modification Date:
Not specified
Note:
Context
Document Type:
Meeting Report
Organization:
3GPP TSG RAN WG1
Date:
August 17–28, 2020
Reference ID:
R1-200abcd
Scope:
CSI enhancements for MTRP and FR1 FDD reciprocity
Frequency Range:
FR1
Duplex Mode:
FDD
Scenario:
Dense Urban Macro
Antenna Configuration:
gNB 16–32 ports, UE 2–4 RX
Evaluation Metrics:
Throughput and CSI feedback overhead
MIMO Scheme:
SU-MIMO / MU-MIMO with rank adaptation
Channel Modeling:
FDD DL/UL reciprocity, Options 1 and 2
Companies Participating:
19 companies including VIVO, Samsung, Ericsson, Nokia, Apple, Huawei/HiSi
Year:
2020
Region / city:
E-meeting
Topic:
CSI enhancements for MTRP and FR1 FDD reciprocity
Document Type:
Technical Report
Organization / institution:
Huawei, HiSilicon
Author:
Not specified
Target audience:
Industry professionals, technical experts
Period of validity:
Not specified
Approval date:
Not specified
Date of changes:
Not specified
Note:
Context
Year:
2025
Region / City:
Dallas, US
Subject:
Change Request
Document Type:
Technical Specification
Organization / Institution:
3GPP
Author:
China Telecom
Target Audience:
TSG RAN Working Group 4
Effective Period:
October 2025 - November 2025
Approval Date:
2025-11-05
Release:
Rel-19
Change Category:
B (addition of feature)
Work Item Code:
NR_Mob_Ph4-Perf
Date of Change Request:
2025-11-05
Year:
2020
Region / City:
E-meeting
Topic:
CSI enhancements, MTRP, FDD reciprocity
Document Type:
Technical Discussion Summary
Organization:
Huawei, HiSilicon
Author:
Not specified
Target Audience:
3GPP TSG RAN WG1 members
Effective Period:
August 17th – 28th, 2020
Approval Date:
Not specified
Modification Date:
Not specified
Evaluation Assumptions:
MTRP, FR1 FDD reciprocity, CSI reporting for DL multi-TRP/panel transmission
Frequency Range:
FR1, 2GHz, optional for 4GHz
Antenna Setup:
Various configurations for gNB and UE
Traffic Model:
FTP model 1, packet size 0.5 Mbytes
Simulation Bandwidth:
20 MHz for 15kHz
MIMO Scheme:
SU/MU-MIMO with rank adaptation
Feedback Assumption:
Periodic CSI feedback
Overhead Assumption:
DNL overhead for CSI
UE Distribution:
80% indoor, 20% outdoor
CSI Feedback Periodicity:
5ms
SRS Modeling:
5ms/10ms periodicity
Evaluation Metric:
Throughput and CSI feedback overhead
Baseline:
Rel-16 PS eTypeII Codebook
SRS Configuration:
Configuration details for different models
FDD DL/UL Calibration:
Ongoing discussions on error model
Channel Modeling:
Discussion on FDD reciprocity models
Context Description:
Technical discussion on CSI enhancements for FDD reciprocity, focusing on MTRP and FR1 with contributions from various companies.
Year:
2022
Region / City:
Global
Theme:
Telecommunications, 5G
Document Type:
Meeting Report
Organization:
3GPP TSG-RAN4
Author:
Not specified
Target Audience:
Technical experts, industry professionals
Period of Action:
Not specified
Approval Date:
Not specified
Modification Date:
Not specified
Organization:
3GPP
Working Group:
RAN WG4
Meeting:
RAN WG4 Meeting #98-e
Meeting format:
Electronic meeting
Meeting date:
2021-01-25 – 2021-02-05
Document type:
Change Request
CR number:
R4-2103567
Specification:
38.133
Current version:
16.6.0
Release:
Rel-16
Category:
B (addition of feature)
Title:
DraftCR on EN-DC NR SpCell in FR1 and 2 NR SCells in FR2 for Dormant SCell switch via DCI 2_6 within and after 3 OFDM symbols
Source to WG:
Qualcomm Incorporated
Source to TSG:
R4
Work item code:
LTE_NR_DC_CA_enh-Perf
Date:
2021-01-25
Affected clauses:
A.5.5.x.y
Affected specifications:
TS38.533, TS36.133
Related technology:
EN-DC, NR FR1, NR FR2, E-UTRA
Test scenario:
EN-DC configuration with one E-UTRA PCell, one NR FR1 PSCell, and three NR FR2 SCells
Purpose:
Verification of dormant BWP switch delay and interruption requirements
Year:
2022
Region / City:
N/A
Topic:
Wireless Communication
Document Type:
Meeting Document
Organization:
3GPP TSG-RAN4
Author:
N/A
Target Audience:
Technical Experts in Wireless Communications
Action:
Approval
Period of Effectiveness:
N/A
Approval Date:
N/A
Date of Changes:
N/A
References:
38.101-1, R4-2205610, R4-220xxxx
Year:
2020
Event:
3GPP TSG RAN WG1 Meeting #103-e
Meeting Format:
e-Meeting
Meeting Period:
October 26 – November 13, 2020
Agenda Item:
8.8.1.1
Document Number:
R1-200xxxx
Organization:
3GPP TSG RAN WG1
Source:
Moderator (SoftBank)
Topic:
NR coverage enhancement and baseline coverage performance for FR1
Technical Scope:
Link Level Simulation (LLS) evaluation assumptions and performance metrics
Related Work Items:
NR Coverage Enhancement (FR1)
Companies Referenced:
Vivo, Intel, ZTE, Apple, Ericsson, Sierra Wireless, InterDigital, OPPO, CATT, Nokia/NSB
Document Type:
Meeting summary and discussion report
Purpose:
Information
Technical Areas:
performance metrics, link budget assumptions, antenna gain correction factors, PUSCH and PUCCH configuration, simulation parameters
Communication Method:
email discussion checkpoints and GTW session guidance
Year:
2021
Date:
2021-02-02
Organization:
3rd Generation Partnership Project
Technical Group:
TSG RAN WG4
Meeting:
RAN WG4 Meeting #98-e
Document Type:
Change Request
Specification:
3GPP TS 38.101-4
Current Specification Version:
16.3.0
Release:
Rel-16
CR Number:
0131
Revision:
1
Category:
B (addition of feature)
Source to WG:
CMCC
Source to TSG:
R4
Work Item Code:
NR_UE_pow_sav-Perf
Affected Clauses:
5.3.2.2.3 (New); 5.3.3.2.3 (New)
Affected Specifications:
TS38.521-4
Technical Domain:
Radio Access Network
Subject:
Demodulation performance requirements for power saving UE in FR1 TDD using PDCCH DCI format 2_6
Test Scope:
FR1 TDD PDCCH monitoring and demodulation performance during DRX operation
Year:
2021
Region:
Global
Topic:
Telecommunications, 5G NR
Document Type:
Change Request
Organization:
3GPP TSG-RAN WG4
Author:
MediaTek
Target Audience:
Network equipment manufacturers, test engineers
Work Item Code:
NR_UE_pow_sav-Perf
Release:
Rel-16
Category:
B (addition of feature)
Date Submitted:
2021-01-15
Affected Sections:
5.3.2.1.3, 5.3.3.1.3
Related Specifications:
TS38.101-4, TS38.521-4
Change Purpose:
Define demodulation performance requirements for power saving UE
Revision History:
Revised from draft CR R4-2102086
Year:
2026
Date:
2026-01-29
Meeting:
3GPP TSG-RAN4 Meeting #118
Meeting location:
Gothenburg Metropolitan Area, Sweden
Meeting dates:
9–13 February 2026
Specification:
3GPP TS 38.133
Current specification version:
19.3.0
Release:
Rel-19
Change Request number:
R4-2600559
Category:
B (addition of feature)
Work item code:
NR_Mob_Ph4-Perf
Source to Working Group:
Apple
Source to TSG:
R4
Technical domain:
Radio Access Network
Affected clauses:
New section A.7.7.15.2
Related test specification:
TS 38.533
Technology:
5G NR
Subject:
CSI-RS based L1-RSRP measurement accuracy for neighbour cells
Frequency range:
FR2
Measurement type:
CSI-RS based L1-RSRP
Test configuration:
NR cells with periodic reporting and CSI-RS measurements
Test environment:
AWGN propagation conditions with TDD configuration
Document type:
Technical change request
Year:
2025
Location:
Dallas, USA
Type of document:
Draft technical report
Organization:
3GPP TSG RAN WG1
Author:
Moderator (MediaTek)
Agenda item:
10.2.2
Purpose:
Discussion and decision on enhancing DL CSI acquisition
Target audience:
Companies participating in 3GPP RAN1 discussions
Related contributions:
38 company inputs summarized
Period:
November 17–21, 2025
Date of draft:
2025-11-17
Meeting:
3GPP TSG-SA5 Meeting #140-e
Document number:
S5-216134e
Date:
15–24 November 2021
Source organization:
China Unicom
Agenda item:
6.4.61
Document type:
Technical discussion paper
Intended action:
Approval and endorsement
Standardization body:
3GPP
Related specifications:
3GPP TS 28.552; 3GPP TS 38.314
Technology area:
5G NR network management and performance measurement
Subject:
MIMO PRB usage definition and measurement granularity
Scope:
Downlink and uplink PRB usage per NRCellDU
Period referenced:
October–November 2021
Year:
2025
Region / City:
Bengaluru, India
Theme:
NR MIMO Ph5 draft CR, Release 19
Document Type:
Meeting Summary
Organization:
3GPP TSG RAN WG1
Author:
Nokia
Target Audience:
3GPP Working Group Members, Industry Professionals
Period of validity:
Until September 10th, 2025
Approval Date:
N/A
Date of Changes:
05.09.2025
Note:
Contextual Description
Year:
2022
Region / City:
Global
Theme:
Telecommunications, 5G
Document Type:
Meeting Report
Organization:
3GPP TSG-RAN4
Author:
Not specified
Target Audience:
Technical experts, industry professionals
Period of Action:
Not specified
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2020
Meeting:
3GPP TSG-RAN WG4 Meeting #96-e
Meeting Type:
Electronic Meeting
Meeting Date:
17 August – 28 August 2020
Agenda Item:
12.1.3
Source:
Keysight Technologies
Document Number:
R4-2011216201xxxx
Document For:
Approval
Technical Domain:
NR FR2 MIMO OTA Testing
Related Work Items:
NR MIMO SI; NR MIMO WI opened in RAN#88-e
Referenced Specification:
TS 38.521-2
Test Configuration:
NR FR2 MIMO MPAC system with roll-over-AZ combined-axes positioning
Number of Test Points:
36 evenly spaced FR2 test points
Measurement Metrics:
EIRP; EIS; TRP
Validation Procedure:
Quality of the Quiet Zone (QoQZ)
Year:
2022
Region / City:
N/A
Topic:
Wireless Communication
Document Type:
Meeting Document
Organization:
3GPP TSG-RAN4
Author:
N/A
Target Audience:
Technical Experts in Wireless Communications
Action:
Approval
Period of Effectiveness:
N/A
Approval Date:
N/A
Date of Changes:
N/A
References:
38.101-1, R4-2205610, R4-220xxxx
Year:
2026
Location:
Gothenburg, Sweden
Topic:
NR MIMO Phase 6, DL CSI acquisition enhancements
Document type:
Draft report for discussion and decision
Organization:
3GPP TSG RAN WG1
Author/Moderator:
MediaTek
Target audience:
Participating companies and delegates in 3GPP RAN WG1 meetings
Period of application:
Rel-20 NR MIMO standardization phase
Agenda item:
9.2.2
Source:
Moderator summary
Key issues:
Early SRS/CSI/CSI-RS triggering, CSI-RS frequency-domain density reduction
Contributors:
Apple, AT&T, CATT, CMCC, CEWiT, China Telecom, Ericsson, ETRI, Futurewei, Fujitsu, Google, Huawei, HONOR, IIT Kanpur, InterDigital, Kyocera, Lenovo, LG, MediaTek, Nokia, NTT DOCOMO, NEC, NICT, Panasonic, Qualcomm, Rakuten, Samsung, Sony, Spreadtrum, Sharp, TCL, Tejas, Vivo, Xiaomi, ZTE
Contact information:
See draft document table
Year:
2026
Region / City:
Gothenburg, Sweden
Theme:
MIMO, CJTC, UE Features
Document Type:
Meeting Document
Organization / Institution:
3GPP RAN WG4
Author:
Thomas Zhang
Target Audience:
RAN WG2, RAN WG1
Period of Validity:
February 2026
Approval Date:
N/A
Date of Changes:
N/A
Context:
Technical document related to the specification and requirements for Rel-19 MIMO Phase 5 features discussed in the context of 3GPP TSG-RAN WG4.