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Detailed session notes and technical agreements from 3GPP RAN WG1 #124 on the evaluation of NR-NTN GNSS resilient operation, including PRACH preamble analysis, theoretical Doppler limits, and scenario-based performance considerations.
Year:
2026
Location:
Gothenburg, Sweden
Topic:
Non-Terrestrial Networks (NR-NTN) and GNSS Resilience
Document Type:
Meeting session notes
Organization:
3GPP TSG RAN WG1
Authors:
Ad-Hoc Chair (Ericsson), Moderators (Thales, various contributors)
Target Audience:
3GPP members, telecommunications engineers
Agenda Item:
9.6
Related Documents:
RP-253137, R1-2600253, R1-2601321
Scope:
NR Phase 4 NTN operation, PRACH performance evaluation, GNSS resilience studies
Date:
February 9–13, 2026
Format:
Collaborative meeting summaries and technical evaluations
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Year:
2020
Region / City:
Not specified
Topic:
GNSS Receiver Calibration
Document Type:
Technical Report
Organization:
RISE Research Institutes of Sweden AB
Author:
Kenneth Jaldehag, P. Jarlemark, C. Rieck
Target Audience:
Researchers, engineers, and professionals in the field of measurement science and GNSS calibration
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Last Update:
Not specified
Year:
2021
Region / city:
Manassas, VA
Topic:
Global Navigation Satellite Systems, Software Defined Radio, Metadata
Document Type:
Technical Standard
Organization / Institution:
The Institute of Navigation
Author:
ION GNSS SDR Standard Working Group
Target Audience:
Researchers, Engineers, and Developers working with GNSS SDR systems
Effective Period:
Ongoing
Approval Date:
Not specified
Amendment Date:
Not specified
Year:
2026
Region / city:
Gothenburg, Sweden
Topic:
6G, NTN, GNSS, radio design
Document Type:
Study report
Organization / Institution:
3GPP TSG RAN WG1
Author:
Qualcomm Incorporated
Target Audience:
Technical experts, industry professionals, companies involved in 6G development
Period of validity:
Ongoing
Date of approval:
Not specified
Date of changes:
Not specified
Year:
2026
Region / City:
Gothenburg, Sweden
Topic:
6G, NTN, GNSS
Document type:
Discussion Document
Organization / Institution:
3GPP TSG RAN WG1
Author:
Qualcomm Incorporated
Target audience:
Industry professionals, 6G researchers
Validity period:
Not specified
Approval date:
Not specified
Date of changes:
Not specified
Year:
2026
Region / city:
Gothenburg, Sweden
Topic:
6G, NTN, Radio access network
Document type:
Agenda item, Technical proposal
Organization / institution:
3GPP
Author:
Moderator (Qualcomm Incorporated)
Target audience:
Industry professionals, engineers, researchers in telecommunications
Action period:
Feb. 9th - 13th, 2026
Approval date:
Not specified
Modification date:
Not specified
Year:
2026
Location:
Gothenburg, Sweden
Topic:
6G NTN radio design and requirements
Document type:
Meeting report
Organization:
3GPP TSG RAN WG1
Author:
Qualcomm Incorporated (moderator)
Audience:
RAN1 working group participants
Period:
Feb. 9th - 13th, 2026
Agenda item:
10.7.1
Proposals included:
Nokia, OPPO, Thales, Tejas Networks, CATT, InterDigital, Samsung, Amazon, Xiaomi
Key technologies:
NTN, TN, GNSS, 6GR, LEO, MEO, GEO, eMBB
Objectives:
Harmonization of 6G TN and NTN, spectrum efficiency, coverage, system simplification, energy efficiency
Year:
2026
Region / city:
Gothenburg, Sweden
Topic:
6G NTN design and requirements
Document type:
Technical report
Organization:
3GPP TSG RAN WG1
Author:
Moderator (Qualcomm Incorporated)
Target audience:
6G researchers, network engineers, telecommunications specialists
Period of validity:
N/A
Approval date:
N/A
Date of changes:
N/A
Year:
2026
Location:
Gothenburg, SE
Topic:
Non-Terrestrial Networks (NR-NTN) GNSS resilience
Document Type:
Meeting notes / technical session
Organization:
3GPP TSG RAN WG1
Author:
Ad-Hoc Chair (Ericsson)
Contributors:
THALES, Huawei, HiSilicon, Spreadtrum, UNISO, OPPO, Ericsson, ZTE Corporation, Tejas Network Limited, CMCC, Xiaomi, TCL, vivo, Fraunhofer IIS, Fraunhofer HHI, IMU, InterDigital, Inc., TOYOTA Info Technology Center, NEC, China Telecom, Samsung, ST Engineering iDirect, ESA, Amazon Web Services, Apple, Sharp, MediaTek Inc., HONOR, LG Electronics, Panasonic, ETRI, Eutelsat Group, Lenovo, Nokia, Airbus, Ofinno, Sony, NTT DOCOMO, Qualcomm, Google Korea LLC, CAICT, CEWiT, CSCNR
Target Audience:
3GPP members and industry participants
Session Date:
February 9–13, 2026
Reference Documents:
RP-253137, R1-2600253, R1-2601321
Focus:
GNSS resilient NR-NTN operation, PRACH performance evaluation, Connected mode results
Year:
2026
Event:
3GPP TSG RAN WG1 #124
Agenda Item:
10.7.1
Location:
Gothenburg, Sweden
Dates:
9–13 February 2026
Topic:
Non-Terrestrial Networks (NTN) and GNSS-based operation in 6G radio systems
Document Type:
Session notes and contribution list
Organization:
3GPP TSG RAN Working Group 1
Source:
Ad-Hoc Chair (Ericsson)
Purpose:
Endorsement
Related Study:
Rel-20 6GR-NTN specific
Technical Scope:
NTN specific requirements, GNSS-based operation, GNSS-less or resilient operation, evaluation assumptions for 6G radio
Contributing Organizations:
Nokia; FUTUREWEI; Spreadtrum; UNISOC; Huawei; HiSilicon; OPPO; THALES; ZTE Corporation; Sanechips; CATT; Tejas Network Limited; CMCC; Xiaomi; TCL; vivo; InterDigital; NEC; China Telecom; Fraunhofer IIS; Fraunhofer HHI; Samsung; Amazon Web Services; Apple; MediaTek Inc.; Sharp; Lenovo; LG Electronics; Panasonic; ETRI; Ericsson; Airbus; ESA; Iridium; Novamint; Sateliot; TNO; SES; Eutelsat; Ofinno; Sony; NTT DOCOMO; Qualcomm Incorporated; Google Korea LLC; CEWiT; CSCN
Year:
2017
Region / City:
Victoria, Australia
Topic:
GNSS Surveying, Survey Control Network
Document Type:
Guideline
Author:
Office of Surveyor General Victoria (OSGV)
Target Audience:
Surveyors, GNSS data submitters
Period of Validity:
Ongoing program
Approval Date:
2017
Amendment Date:
N/A
Document License:
Creative Commons Attribution 4.0 International
Access:
Available on the DELWP website
Data Format:
Raw data, RINEX format
GNSS Equipment:
PM name, GNSS antenna model
Observation Duration:
One hour or more
Observation Rate:
1 second to 5 seconds
Antenna Reference Point:
Specified during survey
Submission Method:
Survey Marks Enquiry Service (SMES), email
Processing:
Least squares adjustment process
Note:
Description
Year:
2026
Location:
Gothenburg, Sweden
Topic:
6G NTN requirements and harmonized TN/NTN design
Document type:
Meeting report / Technical summary
Organization:
3GPP TSG RAN WG1
Author:
Moderator (Qualcomm Incorporated)
Participants:
Nokia, OPPO, Thales, Tejas Networks, CATT, Vivo, InterDigital, Samsung, Amazon, Xiaomi
Agenda item:
10.7.1
Purpose:
Discussion of NTN-specific requirements and GNSS-based operation design for 6G
Scope:
NTN and TN harmonized 6G Radio design, including system architecture, energy efficiency, coverage, spectral efficiency, and initial access
Proposals reviewed:
NTN support from day one, harmonization framework, spectrum utilization, Doppler and timing compensation, device and network considerations
Year:
2026
Location:
Gothenburg, Sweden
Topic:
6G NTN requirements and design for GNSS-based operation
Document type:
Meeting report / Technical summary
Organization:
3GPP TSG RAN WG1
Authors:
Qualcomm Incorporated (Moderator), contributions from Nokia, OPPO, Thales, Tejas Networks, CATT, Vivo, InterDigital, Samsung, Amazon, Xiaomi
Target audience:
RAN1 working group members and technical contributors
Period covered:
February 9th - 13th, 2026
Agreements:
Harmonized 6GR design for TN and NTN, NTN aspects for initial access, coverage, duplexing, capacity, signalling, GNSS operation, Doppler and propagation considerations, beam management
Proposals:
Key technical proposals from multiple companies regarding NTN deployment, harmonization with TN, and 6GR design considerations
Year:
2026
Region / City:
Gothenburg, Sweden
Topic:
6G Radio Design for NTN
Document Type:
Meeting Agenda
Organization:
Qualcomm Incorporated
Author:
Moderator (Qualcomm Incorporated)
Target Audience:
6G Radio experts, RAN1 participants
Period of Validity:
Feb. 9th - 13th, 2026
Date Approved:
Not specified
Date of Changes:
Not specified
Year:
2026
Region / city:
Gothenburg, Sweden
Theme:
6G NTN and TN Harmonization
Document type:
Technical Discussion Document
Author:
Moderator (Qualcomm Incorporated)
Target audience:
Industry professionals and technical experts in 6G network design
Period of validity:
Feb. 9th - 13th, 2026
Approval date:
N/A
Date of changes:
N/A
Year:
2026
Region / City:
Gothenburg, Sweden
Topic:
NTN Specific Requirements for 6G Radio Design
Document Type:
Meeting Summary
Organization / Institution:
3GPP TSG RAN WG1
Author:
Moderator (Qualcomm Incorporated)
Target Audience:
3GPP Participants, Researchers in 6G Radio Design
Period of Action:
2026
Approval Date:
February 2026
Date of Changes:
Not specified
Year:
2025
Region / City:
Dallas, USA
Theme:
NR-NTN downlink coverage enhancements
Document Type:
Discussion, Decision
Organization / Institution:
3GPP
Author:
Moderator (Thales)
Target Audience:
3GPP members and contributors
Period of validity:
November 17th – 21st, 2025
Approval Date:
Not specified
Date of changes:
Not specified
Year:
2024
Location:
Athens, Greece
Topic:
NR-NTN downlink coverage enhancements
Document type:
Feature Lead Summary (FLS)
Organization:
3GPP TSG RAN WG1
Authors:
Moderator (Thales)
Contributors:
vivo, InterDigital, Inc, NTT DOCOMO, Huawei, HiSilicon, Thales, ZTE, CATT, NEC, Honor, Oppo, Samsung, LG Electronics, CCU, NTPU, PANASONIC, Lenovo, Nokia, Nokia Shanghai Bell, Apple, Sharp
Agenda Item:
9.11.1
Number of TDocs submitted:
32
Period:
Release-19
Date of meeting:
February 26 – March 1, 2024
Year:
2023
Region / City:
Incheon, South Korea
Topic:
NR-NTN and IoT-NTN
Document Type:
Meeting Report
Organization:
3GPP TSG-RAN WG2
Author:
Vice Chairman (ZTE Corporation)
Target Audience:
3GPP members
Period of validity:
May 22-26, 2023
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2020
Region / City:
e-Meeting
Topic:
NR NTN, PRACH, RACH enhancements
Document Type:
Technical Discussion Document
Organization:
3GPP TSG RAN WG1
Author:
MediaTek Inc.
Target Audience:
3GPP technical working group members
Period of validity:
August 17th – 28th, 2020
Approval Date:
N/A
Date of Changes:
N/A
Specification:
3GPP TS 38.331
Working Group:
3GPP TSG-RAN WG2
Meeting:
#132
Location:
Dallas, USA
Meeting dates:
17th – 21st November 2025
Document number:
R2-250xxxx
Revision:
1
Current version:
19.0.0
CR number:
5604
CR category:
B (addition of feature)
Release:
Rel-19
Work item code:
TEI19
Date:
2025-11-20
Title:
NR-NTN to NB-IoT NTN Cell Selection [IoT_NR_NTN_CellSelect]
Source to WG:
EchoStar, Boost Mobile Network, Qualcomm, Aalyria, Terrestar, Skylo, Sateliot, Samsung
Source to TSG:
R2
Clauses affected:
2, 5.2.2.4, 6.2.2, 6.3.1, 6.3.2
Other specifications affected:
TS 38.306 CR 1389; TS 38.300 CR 1059
Reason for change:
Enhanced inter-RAT cell selection mechanism between NR-NTN and IoT NTN
Summary of change:
Introduction of IoT NTN neighbour cell information in new SIBxy including IoT NTN carrier frequency and satellite information
Consequences if not approved:
Reduced efficiency of inter-RAT cell selection and potential service interruption or degraded performance for UEs with dual NTN RAT capabilities
Revision history:
r0 initial version; rev1 introduction of new SIBxy and revision of field description parameters
Form version:
CR-Form-v12.3