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Technical report capturing conclusions on transport mechanisms for IMS voice and signaling over NB-IoT via GEO satellites including IP and non-IP considerations, summarizing decisions made during the 3GPP TSG-SA WG2 #173 meeting.
Year:
2026
Location:
Goa, India
Organization:
3GPP TSG-SA WG2
Document Type:
Meeting Report / Technical Conclusion
Author:
vivo
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4_ARC / Rel-20
Subject:
IMS signaling and voice transport over NB-IoT via GEO satellite
Target Audience:
3GPP members and technical contributors
Date of Meeting:
09-13 February 2026
Document ID:
S2-26XXXXX
Security Consideration:
IMS signaling must be transported over IP for end-to-end IPSec security
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Year:
2026
Location:
Gothenburg, Sweden
Organization:
3GPP TSG-RAN Working Group 4
Document type:
Meeting report / Technical summary
Topics:
HPUE for CA, NR CA, EN-DC, MPR reduction, NR_LBCA_Sw, TEI19, Miscellaneous CRs
Source:
Moderator (Huawei)
Agenda items:
4.1.1, 4.3, 4.4.1, 4.5, 4.6 (except 4.6.2), 4.7.1, 4.8.1
Contributors:
Samsung, Apple, Qualcomm France, LG Electronics, MediaTek, CATT, ZTE, OPPO, THALES, SES, Skyworks Solutions, TELUS, Bell Mobility, Murata
Document purpose:
Information and discussion of technical documents (t-docs) and proposals for Rel-19 and Rel-20 specifications
Date of meeting:
Feb 09-13, 2026
Submission deadline for delegate feedback:
Feb 10, 2026, 18:00 local time
Key actions:
Removal of HPUE superscripts, updates to band combination tables, introduction of HPUE MSD LUTs, collection of company views, preparation of official change requests (CRs)
Year:
2026
Location:
Goa, India
Topic:
3GPP SA1 Working Group Meeting
Document Type:
Agenda
Organizing Body:
3GPP TSG-SA WG1
Chair:
Vasil Aleksiev
Participants:
Individual Members of 3GPP Partner Organizations
Submission Deadlines:
30 January 2026, 23:00 UTC
Meeting Period:
09-13 February 2026
Work Items Covered:
6G System and Operation Aspects, AI, Sensing + Immersive, Massive + Others, Ubiquitous, Verticals
Previous Meeting Report:
SA1#112
Legal Notes:
IPR, antitrust, and competition laws reminder
Consensus Approach:
Emphasis on cooperative decision-making among members
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
Year:
2026
Location:
Gothenburg, Sweden
Topic:
NR IoT NTN Phase 2, HD-FDD Ku band, FR1 numerology
Document type:
Meeting draft / technical summary
Organization:
3GPP TSG-RAN WG4
Author:
Moderator (MediaTek)
Target audience:
RAN4 members, 3GPP participants
Agenda item:
7.6.1
Companies involved:
SHARP Corporation, CATT, Xiaomi, LG Electronics Finland, MediaTek, Thales, Murata Manufacturing, ZTE Corporation, Sanechips, Samsung, Qualcomm, CHTTL, Huawei, HiSilicon, SKY Perfect JSAT Corporation
Document purpose:
Summarize contributions and proposals on UE RF and RRM core requirements for HD-FDD VSAT in Ku band with FR1 numerology
Meeting dates:
February 09-13, 2026
Year:
2026
Location:
Gothenburg, Sweden
Topic:
NR AI/ML mobility and RRM measurement prediction
Document type:
Meeting minutes
Organization:
3GPP TSG-RAN WG4
Author:
Moderator (OPPO)
Agenda items:
7.12.1–7.12.4
Target audience:
RAN4 working group members
Simulation parameters:
FR1, FR2, Tx/Rx beams, UE speed, sampling and measurement periods
Benchmarking:
Baseband and RF error considerations, inference comparison
Date:
Feb. 09-13, 2026
Year:
2026
Location:
Gothenburg, Sweden
Type:
Meeting minutes
Organization:
3GPP TSG-RAN WG4
Author:
Moderator (Samsung)
Target Audience:
3GPP working group members
Agenda Items:
UE demodulation/CSI reporting performance requirements, Draft CR and formal CR Review
Covered Technologies:
NR MIMO, eTypeII-r19 codebook, TypeI-SP-r19 codebook, FDD and TDD configurations
Participants:
Huawei, Qualcomm, MediaTek, Samsung, Ericsson, Nokia, Apple, CATT
Approval Status:
Document for Approval
Key Decisions:
Gamma values agreement for 2Rx and 4Rx eTypeII-r19 codebooks
Context:
Technical report from a 3GPP working group meeting detailing MIMO demodulation performance results, proposed gamma values, and draft CR reviews for NR systems.
Year:
2026
Location:
Goa, India
Topic:
IMS signaling and voice transport over NB-IoT via GEO satellite
Document Type:
Meeting conclusion
Organization:
3GPP TSG-SA WG2
Contributors:
vivo, China Mobile, MediaTek Inc., Qualcomm Incorporated, China Unicom, China Telecom, CATT, Ericsson, Samsung, OPPO, Xiaomi, Spreadtrum, SHARP
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4_ARC / Rel-20
Period:
09-13 February 2026
Approval Status:
For approval
Abstract:
Updated conclusions on transport mechanisms for IMS signaling and voice packets over NB-IoT GEO NTN
Key Issues:
Support of IMS voice call over NB-IoT via GEO satellite connecting to EPC
Technical Recommendations:
Use of IP packets for IMS signaling, optional RoHC, single PDN connection for IMS signaling and voice
Summary:
Meeting document capturing technical conclusions and proposals for the transport of IMS signaling and voice packets over NB-IoT via GEO satellite connecting to EPC.
Year:
2026
Region / City:
Goa, India
Topic:
IMS signaling transport for GEO NB-IoT NTN access
Document Type:
Meeting Contribution
Organization / Institution:
3GPP
Author:
vivo
Target Audience:
3GPP TSG-SA WG2 members
Period of validity:
February 2026
Approval Date:
Not specified
Modification Date:
Not specified
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4_ARC / Rel-20
Abstract:
Updated conclusion on IMS signaling transport for GEO NB-IoT NTN access
Context:
Document proposing conclusions on IMS signaling transport for GEO NB-IoT NTN access.
Year:
2025
Region / city:
Göteborg, SE
Theme:
IMS voice call optimization via NB-IoT GEO
Document Type:
Technical Specification
Organization:
Huawei, HiSilicon, China Telecom, CSCN
Author:
Not specified
Target Audience:
Telecom engineers, 3GPP members
Period of validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2026
Region / City:
Goa, India
Theme:
Telecommunications
Document Type:
Meeting Conclusion
Organization:
3GPP TSG-WG SA2
Author:
Huawei, HiSilicon
Target Audience:
Telecommunications professionals, engineers, and network operators
Period of validity:
N/A
Approval Date:
9th Feb 2026
Amendment Date:
N/A
Year:
2026
Location:
Goa, India
Topic:
IMS enhancement for GEO NB-IoT NTN access
Document type:
Meeting contribution / Technical report
Organization:
3GPP TSG-WG SA2
Author:
Huawei, HiSilicon
Audience:
3GPP members, telecom engineers
Agenda item:
20.1.1
Work item / Release:
FS_5GSAT_Ph4-ARC / Rel-20
Reference document:
TR 23.700-19 v1.1.0
Meeting number:
#173
Date:
9–13 February 2026
Summary:
Interim conclusions for Key Issue #2 on IMS enhancement for GEO NB-IoT NTN access including SIP message size reduction, shortened call setup, and B2BUA interoperation
Year:
2025
Region / City:
Global / 3GPP Members
Subject:
Telecommunications; NB-IoT; IMS Voice; GEO Satellite
Document Type:
Technical contribution / Agreement
Organization:
3GPP, vivo Mobile Communication Co.
Authors:
Contributors from vivo, China Mobile, MediaTek, ZTE, Verizon, Ericsson, CATT, Nokia, Skylo, Thales, China Telecom, Spreadtrum, Xiaomi, OPPO, China Unicom, LG Electronics, Apple, Samsung, NTT DOCOMO, CSCN, SHARP
Target Audience:
3GPP Working Groups RAN1, RAN2, SA2, SA4
Period of Effect:
2025 – until next update
Approval Date:
August 2025
References:
3GPP TR 23.700-19, TS 26.132, TR 36.321, TR 36.763, TR 38.811, TR 38.821, FS_ULBC Tdocs
Year:
2026
Region / city:
Goa, India
Topic:
IMS Voice over GEO Satellite
Document Type:
Specification
Organization:
3GPP
Author:
Nokia
Target audience:
3GPP members
Period of validity:
N/A
Approval date:
N/A
Modification date:
N/A
Year:
2026
Location:
Goa, India
Subject:
IMS enhancement for GEO NB-IoT NTN access
Document Type:
Meeting contribution / Technical conclusion
Organization:
3GPP TSG-WG SA2
Author:
Huawei, HiSilicon
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4-ARC / Rel-20
Purpose:
Approval
Reference Document:
TR 23.700-19 v1.1.0
Interim Conclusions:
SigComp, SIP header slimming, SDP preconfiguration, shortened call setup, B2BUA support, dedicated bearer for IMS voice data
Year:
2026
Region / city:
Goa, India
Topic:
Change request for GEO voice data transport
Document Type:
Change Request
Organization:
3GPP
Author:
vivo
Target Audience:
3GPP Working Groups, SA2
Period of Validity:
N/A
Approval Date:
2026-01-30
Amendment Date:
N/A
Proposed change:
Documentation of required normative work for GEO voice data transport over UP IP.
Consequences if not approved:
GEO voice data transport over UP IP will not be supported.
Year:
2026
Region / City:
India
Document Type:
Change Request
Organization / Committee:
3GPP TSG-SA5
Author:
Huawei
Work Item Code:
TEI19
Release:
Rel-19
Category:
C
Date Submitted:
2026-01-10
Meeting Number:
165
Clauses Affected:
TraceControlNrm.yaml
Related Specifications:
Other core specifications, Test specifications, O&M Specifications
Revision History:
1st Change at commit 09d56814c19dc9ad803b1dd962315a850f929df4
URL:
https://www.3gpp.org/Change-Requests
Year:
2026
Location:
Goa, India
Organization:
3GPP TSG-SA WG2
Document Type:
Meeting Report
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4_ARC / Rel-20
Author / Contributor:
MediaTek Inc.
Target Audience:
3GPP members and IMS implementers
Subject:
IMS enhancement, GEO NB-IoT NTN, static SDP pre-definition
Date of Meeting:
February 09–13, 2026
Proposal Status:
Interim conclusion
References:
RFC 4566
Year:
2026
Institution:
University of Florida
Department:
Geography
Course Code:
GEO 2410
Course Type:
Asynchronous Online Class
Instructor:
Zeyu He
Syllabus Contributors:
Neha Kohli, Dr. Michael Waylen, Dr. Heidi Lannon
Email:
[email protected]
Office Hours:
Jan. 19 – Apr. 17, Friday 10:30 AM - 12:30 AM EST, Turlington Hall 1215 or Zoom
Target Audience:
University Students
Required Text:
The Newcastle Social Geographies Collective. 2021 Social Geographies: An Introduction, Rowman & Littlefield Publishers, ISBN 9781786612304
Topics Covered:
Social geography, human-environment interactions, migration, environmental justice, spatial social systems
Assessment:
Weekly deliverables (discussion posts, labs, quizzes), final project proposal outline
Policies:
Student accommodations through Disability Resource Center, online participation, class attendance, professional communication
Resources:
Counseling and Wellness Center, University Police, Canvas platform
Year:
Not specified
Region / City:
Not specified
Topic:
Colonic mucosa, PET-MPs, UC, immune cell infiltration
Document Type:
Research data table
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Researchers in molecular biology, immunology, and related fields
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2026
Location:
Goa, India
Topic:
IMS signaling and voice transport over NB-IoT via GEO satellite
Document Type:
Meeting conclusion
Organization:
3GPP TSG-SA WG2
Contributors:
vivo, China Mobile, MediaTek Inc., Qualcomm Incorporated, China Unicom, China Telecom, CATT, Ericsson, Samsung, OPPO, Xiaomi, Spreadtrum, SHARP
Agenda Item:
20.1.1
Work Item / Release:
FS_5GSAT_Ph4_ARC / Rel-20
Period:
09-13 February 2026
Approval Status:
For approval
Abstract:
Updated conclusions on transport mechanisms for IMS signaling and voice packets over NB-IoT GEO NTN
Key Issues:
Support of IMS voice call over NB-IoT via GEO satellite connecting to EPC
Technical Recommendations:
Use of IP packets for IMS signaling, optional RoHC, single PDN connection for IMS signaling and voice
Summary:
Meeting document capturing technical conclusions and proposals for the transport of IMS signaling and voice packets over NB-IoT via GEO satellite connecting to EPC.