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This document summarizes discussions on uplink-based CSI acquisition and associated requirements and design aspects, highlighting the challenges and proposals for efficient SRS transmission and coverage in 6G networks.
Year:
2026
Region / city:
Gothenburg, SE
Topic:
UL-based CSI acquisition, SRS design, interference management
Document type:
Draft
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target audience:
Technical experts, telecom companies, network engineers
Action period:
Feb. 9th ~ 13th, 2026
Date of approval:
N/A
Date of modification:
N/A
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Year:
2026
Event:
3GPP TSG RAN WG1 #124
Location:
Gothenburg, Sweden
Agenda item:
10.5.3.2
Topic:
Aspects of uplink-based CSI acquisition
Document type:
Moderator summary / technical meeting contribution
Organization:
3GPP TSG RAN Working Group 1
Source:
Moderator (CATT)
Meeting dates:
9–13 February 2026
Technical scope:
UL-based CSI acquisition, SRS design and transmission, channel estimation, interference management
Technology domain:
5G NR evolution and 6G research (6GR)
Contributing companies referenced:
Samsung, Huawei, Apple, Ericsson, Nokia, ZTE, Qualcomm, NVIDIA, Lenovo, MediaTek, Sony, CMCC and others
Key technical elements:
SRS design, channel bandwidth up to 400 MHz, coverage and capacity enhancement, dynamic SRS transmission, multi-TRP transmission, interference mitigation
Standardization context:
Study discussion within 3GPP RAN1 for future radio access technologies
Year:
2026
Region / city:
Gothenburg, SE
Topic:
UL-based CSI acquisition
Document type:
Draft
Organization / institution:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target audience:
Participants of the 3GPP meeting
Period of validity:
February 9th ~ 13th, 2026
Date of approval:
Not specified
Date of changes:
Not specified
Context:
Document for discussion and decision during the 3GPP meeting on the topic of uplink-based CSI acquisition and related requirements and designs.
Year:
2026
Region / City:
Gothenburg, SE
Topic:
Uplink-based CSI acquisition
Document Type:
Meeting Agenda and Discussion Summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target Audience:
Participants in the 3GPP TSG RAN WG1
Period of Effect:
2026
Approval Date:
February 9th, 2026
Modification Date:
None
Year:
2026
Location:
Gothenburg, Sweden
Subject:
Uplink-based CSI acquisition for 6GR
Document type:
Meeting contribution / draft summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target audience:
Working group members and contributing companies
Period of validity:
February 9–13, 2026
Date of creation:
2026-02-09
Related contributions:
124-R20-6GR-Aspects of UL based CSI acquisition
Companies referenced:
Samsung, Huawei, Apple, Ericsson, Tejas, NVIDIA, Nokia, ZTE, Lenovo, MediaTek, OPPO, Qualcomm, NEC, CMCC, Fujitsu, Panasonic, Spreadtrum, Sharp, Rakuten, Google, AT&T, FUTUREWEI, InterDigital
Topics covered:
SRS design, transmission and acquisition, channel bandwidth, capacity, coverage, multi-TRP coordination, interference mitigation, early SRS triggering
Year:
2026
Location:
Gothenburg, Sweden
Topic:
Uplink-based Channel State Information (CSI) acquisition in 6G
Document type:
Meeting summary / Technical report
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Intended audience:
3GPP member companies and participants
Meeting dates:
February 9–13, 2026
Agenda item:
10.5.3.2
Contributors:
Samsung, Huawei, Apple, Ericsson, Tejas, NVIDIA, Nokia, InterDigital, Panasonic, Lenovo, MediaTek, Oppo, Qualcomm, CMCC, ZTE, FUTUREWEI, Spreadtrum, AT&T, Fujitsu
Key topics:
UL-based CSI acquisition requirements, SRS design, multi-TRP scenarios, channel bandwidth, coverage, interference management, early SRS triggering
Technical focus:
Uplink and downlink CSI, beam management, SRS transmission schemes, large bandwidths, MU-MIMO, coherent joint transmission, interference mitigation
Challenges addressed:
High path loss at higher frequencies, coverage gaps, channel aging, configuration complexity, resource contention, interference across TRPs
Summary:
Technical meeting record detailing company inputs, requirements, and discussion points on uplink-based CSI acquisition for 6G, covering SRS design, multi-TRP coordination, channel bandwidth, coverage, and interference challenges.
Year:
2026
Region / City:
Gothenburg, SE
Topic:
Uplink-based CSI acquisition
Document Type:
Draft
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target Audience:
Industry professionals in wireless communication
Period of Validity:
February 9th ~ 13th, 2026
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2026
Location:
Gothenburg, Sweden
Topic:
UL-based CSI acquisition for 6G/Rel-20 networks
Document type:
Meeting contribution / summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Audience:
Member companies and participants of 3GPP WG1
Meeting period:
February 9–13, 2026
Agenda item:
10.5.3.2
Content focus:
SRS design, transmission, coverage, capacity, multi-TRP coordination, interference management, early CSI acquisition
Related companies:
Samsung, Huawei, Apple, Ericsson, Tejas, Nokia, NVIDIA, Lenovo, Oppo, MediaTek, Qualcomm, CMCC, ZTE, Panasonic, InterDigital, Fujitsu, Sharp, Rakuten, Vivo, Spreadtrum, AT&T
Frequency range:
FR1 and FR2 (~7 GHz)
Challenges addressed:
Channel aging, low SNR, coverage gaps, high configuration complexity, interference coordination, large channel bandwidth sounding
Year:
2026
Location:
Gothenburg, Sweden
Organization:
3GPP TSG RAN WG1
Document number:
Draft R1-2601302
Agenda item:
10.5.3.2
Meeting:
3GPP TSG RAN WG1 #124
Author:
Moderator (CATT)
Topic:
Uplink-based CSI acquisition in 6G radio systems
Technical scope:
SRS design, transmission and acquisition for uplink-based CSI
Related release:
Rel-20 6G Radio (6GR) study
Participating organizations:
Samsung, Huawei, Apple, Ericsson, Nokia, ZTE, Qualcomm, NVIDIA, Lenovo, MediaTek, CMCC, Tejas, Sony, InterDigital, Panasonic, AT&T, Google, ETRI, NTT DOCOMO and others
Technology domain:
Wireless telecommunications, radio access networks
Document type:
Technical meeting contribution and discussion summary
Purpose:
Discussion and decision within RAN WG1 study activities
Key concepts:
SRS transmission, channel bandwidth up to 400 MHz, capacity enhancement, coverage enhancement, multi-TRP transmission, interference mitigation, early SRS triggering
Applicable scenarios:
Dense networks, cell-free systems, high-speed train networks, multi-user MIMO deployments
Year:
2026
Region / City:
Gothenburg, SE
Topic:
UL-based CSI acquisition
Document Type:
Draft
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Target Audience:
Industry experts, engineers, and companies involved in the development of 6G technologies
Period of Validity:
February 9th – 13th, 2026
Approval Date:
Not specified
Modification Date:
Not specified
Context:
This document is a summary of discussions and company contributions related to uplink-based CSI acquisition for 6G, addressing design requirements, coverage, capacity, and interference management issues.
Moderator summary#1 on uplink-based CSI acquisition for 3GPP TSG RAN WG1 #124, Gothenburg, Feb. 2026
Year:
2026
Location:
Gothenburg, Sweden
Document type:
Technical contribution / meeting summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (CATT)
Agenda item:
10.5.3.2
Target audience:
3GPP working group members
Topics:
UL-based CSI acquisition, SRS design, multi-TRP transmission, interference management, channel bandwidth, coverage and capacity enhancements
Related standards:
5G NR, Rel-20, 6GR
Discussion period:
Feb. 9th–13th, 2026
Date of creation:
Feb. 2026
Year:
2021
Region / city:
e-Meeting
Topic:
HST-SFN deployment, MIMO support, TRP transmission, RRC parameters
Document Type:
Meeting Summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (Intel Corporation)
Target Audience:
Industry professionals and companies involved in 3GPP standards
Period of Action:
2021
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2025
Region / city:
Dallas, USA
Theme:
6GR air interface overview
Document type:
Meeting report
Source:
Moderator (NTT DOCOMO)
Target audience:
RAN1 meeting participants
Period of validity:
November 17th – 21st, 2025
Approval date:
Not specified
Date of amendments:
Not specified
Note:
Context
Year:
2021
Region / city:
e-Meeting, October 11th – 19th, 2021
Topic:
MIMO support, HST-SFN deployment
Document type:
Meeting summary
Organization / institution:
3GPP TSG RAN WG1
Author:
Moderator (Intel Corporation)
Target audience:
Technical experts in wireless communications
Period of validity:
October 11th – 19th, 2021
Approval date:
October 11th, 2021
Date of amendments:
N/A
Year:
2021
Region / City:
Global
Topic:
MIMO support, HST-SFN deployment, transmission schemes
Document type:
Meeting summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (Intel Corporation)
Target audience:
Companies and technical contributors in the telecommunications industry
Period of validity:
May 10th – 27th, 2021
Approval date:
May 2021
Modification date:
None
Context:
Meeting summary of proposals and discussions regarding enhancements on HST-SFN deployment for 5G networks, as discussed in the 3GPP TSG RAN WG1 #105-e meeting.
Year:
2021
Region / City:
Not specified
Topic:
NR CA, SCell activation, temporary RS
Document Type:
Technical Paper
Organization / Institution:
Huawei
Author:
Moderator (Huawei)
Target Audience:
Industry professionals, companies involved in NR CA
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2021
Region / City:
N/A
Topic:
MIMO, HST-SFN, TCI, QCL
Document Type:
Meeting Summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (Intel Corporation)
Target Audience:
Members of 3GPP TSG RAN WG1
Period of Validity:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Year:
2022
Region / city:
Global
Topic:
XR Capacity Enhancements
Document Type:
Meeting Agenda / Discussion Document
Organization / Institution:
3GPP TSG-RAN WG1
Author:
Ericsson
Target Audience:
Telecom engineers, XR specialists, 3GPP participants
Effective Period:
May 9th – 20th, 2022
Approval Date:
Not specified
Revision Date:
Not specified
Note:
Summary of the document
Year:
2021
Region / City:
N/A
Topic:
Power Saving Adaptation in Telecommunications
Document Type:
Meeting Contribution
Organization / Institution:
3GPP TSG RAN WG1
Author:
Moderator (vivo)
Target Audience:
Industry professionals in telecommunications
Period of Effect:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Year:
2021
Meeting:
3GPP TSG RAN WG1 #104-e
Document Number:
R1-21xxxxxe-Meeting
Source:
Moderator (Sharp)
Agenda Item:
8.8.1.1
Document For:
Discussion and Decision
Work Item:
Coverage Enhancement WID
Technical Scope:
Enhancements on PUSCH repetition type A
Related Releases:
Rel-15, Rel-16, Rel-17
Subject:
Increasing the maximum number of PUSCH repetitions and candidate repetition values
Participating Companies:
ZTE, OPPO, CATT, vivo, Intel, China Telecom, NEC, Panasonic, Xiaomi, Sierra Wireless, Apple, Qualcomm, NTT DOCOMO, CMCC, Samsung, Huawei, HiSilicon, Sharp, IITH, Ericsson, Nokia, Nokia Shanghai Bell, IITM, CEWIT, Reliance Jio, Tejas Networks
Discussion Format:
Email discussion checkpoints and round-based technical exchange
Year:
2021
Note:
Region / City
Theme:
Intra-UE multiplexing/prioritization
Document Type:
Email Summary
Organization:
3GPP TSG RAN WG1
Author:
Jia (OPPO)
Target Audience:
3GPP participants and related stakeholders
Agenda Item:
8.3.3
Source:
Moderator (OPPO)