№ lp_2_3_56392
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Summary of meeting discussions and evaluation assumptions for channel reciprocity, antenna setups, MIMO schemes, and CSI feedback for FDD FR1 networks, including options for channel modeling and company preferences on reciprocity.
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
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Year:
2024
Region / City:
Athens, Greece
Theme:
NR MIMO Phase 5, asymmetric DL sTRP/UL mTRP deployment
Document Type:
Technical Report
Organization:
3GPP TSG RAN WG1
Author:
Moderator (OPPO)
Target Audience:
Technical experts in wireless communication, MIMO technology
Period of Action:
Rel-19 WI
Approval Date:
February 26th – March 1st, 2024
Date of Changes:
None
Year:
2022
Region / city:
N/A
Subject:
Extension of unified TCI framework for MTRP
Document type:
Summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (MediaTek)
Target audience:
Companies involved in RAN1 activities
Period of validity:
N/A
Approval date:
N/A
Amendment date:
N/A
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
Year:
2022
Event:
3GPP TSG RAN WG1 #109-e e-Meeting
Agenda item:
9.1.1.1
Source:
Moderator (MediaTek)
Type of document:
Meeting summary / technical report
Topic:
Extension of unified TCI framework for MTRP, multi-TRP UL and DL transmission
Document purpose:
Discussion and decision
Contributors:
Ericsson, Samsung, Docomo, vivo, Qualcomm, ZTE, MTK, CATT, NEC, Lenovo, Intel, Huawei, Apple, Nokia, OPPO, Futurewei, Spreadtrum, Sony, LGE, ITRI, TransHold, Fraunhofer, Fujitsu, CMCC, CEWiT
Targeted devices:
CPE, FWA, vehicle, industrial devices
Key focus:
Rel-17 and Rel-18 MTRP schemes, UL and DL TCI state updates, single and multi-DCI operation
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:
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
Topic:
Wireless communication; CSI reporting enhancements
Document Type:
Meeting report / Technical specification proposal
Organization:
3GPP TSG RAN WG1
Author:
Huawei, HiSilicon (Moderator)
Audience:
RAN1 working group members and participating companies
Meeting Dates:
February 21 – March 3, 2022
Agenda Item:
8.1.4
Proposals:
Further enhancement, correction, editorial changes
Target Release:
Rel-17
Frequency Range:
FR1, FR2
Technologies:
MTRP, FDD, CSI-RS, Type II port selection
Companies Contributing:
Lenovo, Samsung, Vivo, CATT
Year:
2024
Location:
Athens, Greece
Event:
3GPP TSG RAN WG1 #116 Meeting
Agenda Item:
9.2.4
Document ID:
R1-2401491
Document Type:
Technical meeting summary
Organization:
3GPP TSG RAN Working Group 1
Source:
Moderator (OPPO)
Subject Area:
5G NR radio access technology
Technical Topic:
Rel-19 NR MIMO Phase 5 asymmetric DL sTRP / UL mTRP deployment scenarios
Frequency Range:
FR1 and FR2
Key Technical Aspects:
pathloss offset configuration, unified TCI framework, MAC CE updates, closed-loop power control for SRS, TPC command value range study
Contributing Companies:
Samsung, Huawei, HiSilicon, InterDigital, Lenovo, vivo, TCL, ZTE, China Telecom, Intel, CATT, NEC, MediaTek, Ericsson, Xiaomi, OPPO, Fujitsu, Sony, LG Electronics, Nokia, Nokia Shanghai Bell, Panasonic, Apple, Sharp, Hyundai Motor Company, NTT DOCOMO, Google, Qualcomm
Discussion Focus:
pathloss offset configuration and closed-loop power control for SRS in asymmetric DL sTRP / UL mTRP scenarios
Year:
2021
Region / City:
Global
Topic:
MIMO, Multi-TRP, PDCCH, Reliability Enhancements
Document Type:
Meeting Summary
Organization / Institution:
3GPP TSG-RAN WG1
Author:
Moderator (Qualcomm)
Target Audience:
Industry professionals, 3GPP members
Period of validity:
November 11th – November 19th, 2021
Date of approval:
November 11th, 2021
Date of amendments:
N/A
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
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:
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
Topic:
Wireless communication; CSI reporting enhancements
Document Type:
Meeting report / Technical specification proposal
Organization:
3GPP TSG RAN WG1
Author:
Huawei, HiSilicon (Moderator)
Audience:
RAN1 working group members and participating companies
Meeting Dates:
February 21 – March 3, 2022
Agenda Item:
8.1.4
Proposals:
Further enhancement, correction, editorial changes
Target Release:
Rel-17
Frequency Range:
FR1, FR2
Technologies:
MTRP, FDD, CSI-RS, Type II port selection
Companies Contributing:
Lenovo, Samsung, Vivo, CATT
Year:
2026
Region / City:
Gothenburg, Sweden
Theme:
Radio communication
Document type:
Working Draft
Organization:
Ericsson
Author:
Ericsson
Target audience:
RAN4 Working Group members
Approval date:
Not specified
Date of last changes:
Not specified
Period of applicability:
Not specified
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
Region / City:
Gothenburg Metropolitan Area, Sweden
Topic:
PMI Reporting Requirements
Document Type:
Change Request (CR)
Organization / Institution:
3GPP TSG-RAN4
Author:
Apple
Target Audience:
3GPP Working Groups
Period of Effect:
2026-02-09 to 2026-02-13
Approval Date:
2026-01-29
Modification Date:
N/A
Related Specifications:
TS 38.521-4
Affected Clauses:
6.3.3.1
Release:
Rel-19
Category:
B
Work Item Code:
NR_MIMO_Ph5-Perf
Year:
2026
Location:
Gothenburg Metropolitan Area, Sweden
Meeting:
3GPP TSG-RAN4 Meeting #118
Organization:
3rd Generation Partnership Project (3GPP)
Working Group:
TSG-RAN4
Specification:
3GPP TS 38.101-4
Current Specification Version:
19.1.0
Release:
Rel-19
Category:
B (addition of feature)
Work Item Code:
NR_MIMO_Ph5-Perf
Source Company:
Apple
Source to TSG:
R4
Date:
2026-01-29
Affected Clause:
6.3.3.1
Related Test Specification:
TS 38.521-4
Technical Topic:
NR MIMO performance and PMI reporting
Technology Domain:
5G NR radio access
Duplex Mode:
FDD
Antenna Configuration:
64Tx / 4Rx
Purpose of Change:
Introduction of PMI reporting requirements with 64 CSI-RS ports using eType II codebook
Summary of Change:
Addition of requirements for 64-TX eType II configuration for FDD with 4RX
Basis Document:
Endorsed draft Big CR R4-2521039
Year:
2025
Region / City:
Massachusetts
Topic:
Nursing Licensure, Reciprocity
Document Type:
Eligibility Requirements
Institution:
Massachusetts Board of Registration in Nursing
Author:
Massachusetts Department of Public Health
Target Audience:
Nurses seeking licensure through reciprocity in Massachusetts
Validity Period:
March 2025
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2026
Region / City:
Ohio
Theme:
Firefighter Certification
Document Type:
Reciprocity Application
Organization / Institution:
Ohio Department of Public Safety
Author:
Ohio Division of Emergency Medical Services
Target Audience:
Firefighter reciprocity applicants
Period of Validity:
Not specified
Approval Date:
Not specified
Amendment Date:
Not specified
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