№ files_lp_4_process_1_35782
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Technical draft summarizing company positions and moderator proposals on enhancements to downlink CSI acquisition, including early SRS/CSI/CSI-RS triggering and CSI-RS port density adjustments, intended for discussion and decision in Rel-20 NR MIMO standardization sessions.
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
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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
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.
Year:
2023
Event:
3GPP TSG RAN WG1 #112 Meeting
Location:
Athens, Greece
Meeting Dates:
February 27 – March 3, 2023
Organization:
3rd Generation Partnership Project (3GPP)
Working Group:
TSG RAN WG1
Source:
Moderator (NTT DOCOMO)
Agenda Item:
9.1.3.1
Document Identifier:
R1-2301774
Document Type:
Technical discussion and decision contribution
Topic:
MIMO and DMRS enhancements for 5G NR Rel-18
Technical Focus:
Downlink and uplink DMRS port expansion, MU-MIMO support, antenna port indication for PDSCH, S-TRP and M-TRP scenarios
Standardization Context:
5G NR Release 18 study and specification work
Participating Companies Mentioned:
NTT DOCOMO, Qualcomm, ZTE, vivo, Ericsson, Intel, Nokia, Samsung, OPPO, MediaTek, LG, Lenovo, CATT, CMCC, New H3C, Sharp
Subject Area:
Wireless communications standardization and physical layer design
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
Year:
2024
Location:
Maastricht, Netherlands
Topic:
NR MIMO Phase 5 UE RF and RRM Requirements
Document type:
Meeting summary / Technical contribution
Organization:
3GPP TSG-RAN WG4
Authors:
Samsung, Qualcomm Incorporated, Qualcomm Technologies Int
Target audience:
3GPP members, RAN4 working group
Agenda items:
8.18.4
Scope:
UE RF requirements, RRM core requirements, demod/CSI requirements, MIMO Phase 5
Meeting dates:
19–23 August 2024
Planned follow-up meetings:
RAN4#112-bis (Oct 2024) – RAN4#118 (Feb 2026)
Focus:
UE-initiated/event-driven beam management, CSI-RS port enhancements, asymmetric DL sTRP/UL mTRP scenarios, 3-antenna-port transmissions
Year:
2023
Region / City:
Gothenburg, Sweden
Topic:
5G NR, AI/ML, MIMO, LP-WUS, Network technology
Document Type:
Meeting Report
Organization / Institution:
3GPP TSG-RAN WG2
Author:
Vice Chairman (CATT)
Target Audience:
Members of 3GPP TSG-RAN WG2, network engineers, and AI/ML specialists
Period of Validity:
Feb. 09th – 13th, 2023
Approval Date:
Not specified
Amendment Date:
Not specified
Year:
2026
Location:
Gothenburg, Sweden
Meeting:
3GPP TSG-RAN WG2 Meeting #133
Agenda item:
11.2
Document type:
Meeting session report and discussion summary
Organization:
3GPP TSG-RAN WG2
Source:
RAN2 Vice Chairman (CATT)
Technical domain:
5G NR radio access network specifications
Topics:
Rel-18/19 MIMO evolution, AI/ML for NR air interface, NR positioning, beam management, RRC procedures
Related specifications:
TS 38.331, TS 37.355, TS 38.306
Working groups referenced:
RAN1, RAN2, RAN3, RAN4, SA, SA5
Contributors:
Ericsson, Qualcomm Incorporated, Huawei, HiSilicon, Apple, OPPO, ZTE Corporation, Sanechips, Nokia, Samsung, Xiaomi, LG
Document category:
Organizational email discussion and technical contribution summary
Relevant releases:
3GPP Release 18, Release 19, Release 20
Year:
2026
Location:
Gothenburg, Sweden
Subject:
NR MIMO Phase 6, DL CSI acquisition enhancements
Document type:
Draft summary for discussion and decision
Organization:
3GPP TSG RAN WG1
Author/Moderator:
MediaTek
Target audience:
3GPP member companies and delegates
Agenda item:
9.2.2
Period of application:
February 9–13, 2026
Proposals included:
Early SRS/CSI/CSI-RS triggering, SCell activation/deactivation handling, CSI-RS density adjustments
Contact information:
Detailed company and delegate contacts included for offline/online discussions
Year:
2021
Region / City:
Visakhapatnam, India
Topic:
Channel Estimation, Massive MIMO, Pilot Contamination
Document Type:
Research Paper
Organization / Institution:
Sanketika Vidya Parishad Engineering College
Author(s):
M. Keerthi, T. Ravi Babu, Manas Ranjan Biswal
Target Audience:
Researchers, Engineers, Academics in Communications
Period of Effectiveness:
Ongoing
Date of Approval:
Not specified
Date of Changes:
Not specified
Year:
2023
Region / city:
St. Julian’s, Malta
Topic:
MIMO, UL skipping, beam reporting
Document type:
Technical Discussion
Organization / Institution:
3GPP TSG-RAN WG2
Author:
Samsung
Target audience:
3GPP Working Group Members
Period of validity:
Until the next agreement
Approval date:
May 2023
Modification date:
Not specified
Intended outcome:
Updated CR based on new agreements
Discussion:
UL skipping, MIMO reporting
Deadline:
May 2nd, 1000 UTC
WID/SID:
NR_MIMO_Ph5
Source:
Samsung
Agenda item:
x.x.x
Contextual description:
The document outlines open technical issues related to MIMO beam reporting and uplink (UL) skipping, discussing potential updates to existing procedures within the 3GPP RAN2 group.
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-SA WG2 Meeting #170
Location:
Gothenburg, Sweden
Dates:
25–29 August 2025
Source:
CATT
Agenda Item:
20.3.1
Work Item:
FS_AIML_CN_Ph2
Release:
Rel-20
Document For:
Approval
Document Type:
Technical Contribution
Title:
KI#1 interim agreements
Abstract:
Proposes interim agreements for KI#1 “Transfer of data over UP for UE data collection” and summarizes 21 candidate solutions included in the Technical Report.
Technical Scope:
Transfer of data over user plane for UE data collection in 5GC
Key Functions Discussed:
DCCF, DCF, UDCF, AMF, AF, ADRF
Related Specifications:
TS 23.273 clause 6.18
Subject Area:
AI/ML-enabled features and UE data collection in 5G Core
Year:
2025
Date:
6th August 2025
Time:
13:00-15:00 UTC
Region / Organization:
International / 3GPP
Document type:
Meeting summary and specification revision proposal
Subject:
6GSM-250044 specification modernization
Sources:
Apple Inc., Huawei, Nokia, Samsung, Ericsson, NTT DOCOMO INC., Xiaomi, ZTE, MediaTek Inc.
Target audience:
3GPP delegates and specification consumers
Purpose:
Approval of consolidated requirements for 6GSM specification
Agenda item:
5.3.2
Specification reference:
pCR 21.802 Rel-20 Specific Requirements
Related documents:
TR 21.802, TR 21.905
Changes tracked:
Proposed revisions and observations for CRs
Key topics:
Requirement consolidation, cross-platform compatibility, traceability, automation, collaboration on CR drafting
Year:
2026
Location:
Gothenburg, Sweden
Topic:
Ambient IoT in NR outdoor scenarios
Document Type:
Meeting notes / Technical study document
Organization:
3GPP TSG RAN WG1
Author:
Ad-Hoc Chair (NTT DOCOMO, INC.)
Contributors:
LG Electronics, Huawei, NEC, FUTUREWEI, CATT, Samsung, Ericsson, Nokia, Xiaomi, ZTE Corporation, Sanechips, vivo, InterDigital, Inc., Qualcomm, IIT Kanpur
Target Audience:
RAN1 working group members and involved industry participants
Agenda Item:
9.3
Study Scope:
Enhancements for solutions for Ambient IoT in NR outdoor environments for active devices
Related Documents:
RP-253394, TR38.769
Key Agreements:
Adoption of updated TP in Moderator’s evaluation summary, maximum transmit power recommendation for Device C, evaluation assumptions and results consensus
Evaluation Metrics:
Data rates, energy harvesting and storage capacities, R2D air interface modifications, coverage, coexistence, and device applicability
Period of Study:
February 9–13, 2026
Date of Notes:
Feb. 13, 2026
3GPP TSG-RAN WG4 Meeting #118: WF on Rel-20 NR_RRM_Ph6 Approval, Feb 09-13, 2026, Gothenburg, Sweden
Year:
2026
Location:
Gothenburg, Sweden
Topic:
(e)RedCap UE enhancement requirements and RRM specifications
Document type:
Meeting report
Organization:
3GPP TSG-RAN WG4
Author:
Ericsson
Target audience:
3GPP members and telecom engineers
Agenda items:
7.4.1
Decisions:
Terminology updates, simulation metrics, PSS/SSS detection, handover interruption delays, hypothetical PDCCH parameters, SSB Index detection
Frequency range:
FR1
UE type:
1Rx and 2Rx (e)RedCap UE
Period:
Feb 09-13, 2026
Reference specifications:
TS38.133, Rel-18 NR, Rel-20 NR