№ lp_1_2_28559
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The document outlines recommendations for the development of an ultra-low bit rate codec for IMS voice services over GEO satellite access, considering additional application scenarios such as LTE, NR, and WLAN.
Year:
2024
Region / city:
N/A
Topic:
Ultra-low bit rate codec for voice over GEO
Document type:
Study report
Organization / institution:
3GPP
Author:
N/A
Target audience:
Technical experts in voice codecs and GEO satellite communication
Period of validity:
N/A
Approval date:
March 2024
Amendment date:
N/A
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Year:
2025
Region / City:
Online
Topic:
AI Codec Complexity, Mobile Devices
Document Type:
Discussion Paper
Organization / Institution:
3GPP TSG-SA WG4
Author:
vivo
Target Audience:
Industry professionals, engineers, researchers
Period of Validity:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Year:
2025
Region / City:
Fukuoka, Japan
Topic:
Speech Codec Testing
Document Type:
Discussion and Agreement
Organization:
3GPP SA4
Author:
Dolby Laboratories Inc., Novamint
Target Audience:
Technical experts in speech codecs
Effective Period:
May 2025
Approval Date:
Not specified
Modification Date:
Not specified
Year:
2025
Region / City:
Online
Topic:
Codec Design, AI, Speech Processing
Document Type:
Discussion Paper
Organization / Institution:
Dolby Laboratories Inc., Nokia, Xiaomi Technology, Orange
Author:
Not specified
Target Audience:
3GPP working groups, codec developers
Period of Validity:
2025
Approval Date:
Not specified
Date of Changes:
Not specified
Note:
Context description
Year:
2025
Region / City:
Japan, Fukuoka
Topic:
Ultra-low bit rate speech codecs, Test methodologies
Document Type:
Discussion and Agreement
Organization:
3GPP SA4
Author:
Dolby Laboratories Inc., Novamint
Target Audience:
Engineers and researchers in speech coding
Period of Validity:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Source:
Rapporteur FS_ULBC
Version:
0.12.20
Agenda item:
7.9
Document for:
Agreement
Revision history:
0.1.0–0.2.0 (2025-05-23 to 2025-07-25)
Meetings:
SA4#132, SA4#133-e
Related TR:
3GPP TR 26.940 “Study on Ultra Low Bitrate Speech Codecs”
Related specifications:
3GPP TS 26.132; 3GPP TR 38.811; 3GPP TR 38.821; TR 36.321; 3GPP TR 36.763
Study item reference:
SP-250378 “SID on Ultra Low Bitrate Speech Codec”
Scope:
Ultra-low bit rate speech codec for voice over Geostationary Orbit (GEO) satellites
Working group:
3GPP SA4
Scenario focus:
IMS Voice Call over GEO
Technical aspects:
Bit rates; sample rate and audio bandwidth; frame length; complexity and memory demands; algorithmic delay; packet loss concealment; discontinuous transmission; speech quality; robustness to non-speech input
Channel assumptions:
Limited data rate (1–3 kbit/s); GEO satellite access; increased uplink and downlink delay; transmission errors
Coordination:
SA2, RAN, CT1 and other 3GPP groups
Document type:
Permanent document (p-doc) supporting a Technical Report
Version:
0.45.0
Year:
2025
Region / City:
Global
Theme:
Ultra-Low Bitrate Communication for Voice over GEO Satellites
Document Type:
Technical Report
Organization / Institution:
3GPP
Author:
Not specified
Target Audience:
3GPP Working Groups, Telecom Engineers
Effective Period:
Ongoing
Approval Date:
2025-05-23
Date of Changes:
2026-02-xx03
Context:
A technical document outlining the study and development of ultra-low bitrate speech codecs for voice communication via geostationary satellites, including performance requirements, test methodologies, and application scenarios.
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
Location:
Goa, India
Topic:
Ultra Low Bitrate Speech Codec Feasibility Study
Document Type:
Meeting Report / Study Plan
Organization:
3GPP TSG-SA WG4
Source:
China Mobile
Version:
0.65
Agenda Item:
16.27.8
Purpose:
Discussion and Agreement
Scope:
IMS Voice Call over GEO, Multi-Party Voice Communication, Vehicle Emergency Call Communication
Performance Metrics:
Speech quality, intelligibility, conversational quality, complexity, memory demands, algorithmic delay, PLC, noise suppression, DTX
Related Documents:
TR 22.887, Annex A Living Document, TR sections 4–9
Coordination:
SA2, RAN, CT1, other relevant 3GPP working groups
Timeline:
March 2025 – February 2026
Meetings:
SA4#131-bis-e, SA4#132, SA4#135, SA4#136, Audio SWG telco, TSG SA#107
Testing:
Subjective and objective methodologies, codec evaluation under clean and noisy conditions, GEO channel simulations
Year:
2025–2026
Region / City:
Global / 3GPP Collaboration
Subject:
Ultra Low Bitrate Speech Codec (ULBC) for GEO Satellite Voice Services
Document Type:
Technical Report / Working Document
Organization:
3GPP SA4 Working Group
Author:
FS_ULBC Rapporteur Team
Target Audience:
Telecom engineers, standardization participants
Revision History:
Detailed per version from 0.1.0 to 0.6.0 including clause updates, simulation models, and design considerations
Applicable Standards:
3GPP TR 26.940, TS 26.132, TR 38.811, TR 38.821, TS 23.700-19
Scope:
ULBC design constraints, simulation methodologies, performance requirements, interoperability with IMS voice over GEO NTN
Methodology:
Clause-based updates, simulation results, reference codecs analysis, complexity and memory evaluation, design constraints validation
Related Contributions:
SP-250378, Tdoc S4-251390, S4aA250058, S4aA250259, S4aA250069, S2-2509293
Implementation Period:
Drafting and updates between May 2025 and February 2026
Additional Notes:
Excludes NB-IoT impacts; coordinates with multiple 3GPP groups
Year:
2026
Region / city:
Goa, India
Topic:
Feasible bitrates, NTN-TDL-C channel model
Document type:
Technical paper
Organization:
Qualcomm Incorporated, Xiaomi
Author:
Qualcomm Incorporated
Target audience:
SA4 working group members, 3GPP participants
Effective period:
February 9-13, 2026
Approval date:
Not provided
Date of changes:
Not provided
Year:
2025
Region / City:
EKC Group
Theme:
Legal Services
Document Type:
Tender Clarification
Organization / Institution:
EKC Group
Author:
EKC Group
Target Audience:
Bidders
Period of Validity:
2026-2029
Approval Date:
2025-09-11
Modification Date:
N/A
Year:
2026
Region / City:
Global
Topic:
3GPP Specifications
Document Type:
Technical Report
Organization:
3GPP
Author:
Huawei
Target Audience:
Technical professionals involved in 3GPP specifications
Period of validity:
N/A
Approval Date:
15th January 2026
Change Date:
N/A
Year:
2025
Region / city:
Global
Topic:
LXI Specification, Interpretations and Clarifications
Document type:
Technical specification
Organization / institution:
LXI Consortium
Author:
LXI Consortium
Target audience:
Developers, engineers, and companies working with LXI devices
Effective period:
2023-2025
Approval date:
June 12, 2023
Revision date:
Feb 16, 2025
Year:
2023
Region / City:
Eastern Atlantic and the Mediterranean
Subject:
Bluefin Tuna Management and Reporting
Document Type:
Recommendation
Organization / Institution:
ICCAT
Author:
ICCAT Secretariat
Target Audience:
CPCs (Contracting Parties and Cooperating non-Contracting Parties)
Period of validity:
Ongoing
Approval Date:
N/A
Date of Amendments:
N/A
Year:
2016
Region / City:
New Mexico
Topic:
Child Development, Scoring Procedures
Document Type:
Update
Organization / Institution:
FIT Program
Author:
Not specified
Target Audience:
Professionals in child development and evaluation
Period of Validity:
Ongoing
Approval Date:
Not specified
Date of Changes:
July 2016
Year:
2024
Region / city:
Global
Topic:
Oil Recovery Terminology
Document Type:
Report
Organization / Institution:
SPE (Society of Petroleum Engineers)
Authors:
D.D. Smith, S. Ayirala, B. Bai, P. Carreras, D. Hampton, K. Mohanty, W. Rossen, L. Schoeling, M. A. Yousef
Target Audience:
SPE Members, Oil Recovery Specialists
Period of Validity:
Ongoing
Approval Date:
2024
Date of Modifications:
Not specified
Year:
2016
Region / City:
Caribbean
Subject:
Tendering process for the supply of hardware, software, and electronic equipment
Document Type:
Clarification document
Organization:
Caribbean Community Secretariat (CARICOM)
Author:
Not specified
Target Audience:
Tenderers, suppliers, and contractors
Period of validity:
Not specified
Approval Date:
Not specified
Amendment Date:
Corrigendum No 1 referenced
Year:
2014-2022
Region / City:
Bali, Indonesia; Bandung, Indonesia; Makati, Philippines; Da Nang, Viet Nam; Brunei Darussalam; Cairns, Australia; Auckland, New Zealand; Melbourne, Australia; Jakarta, Indonesia
Topic:
Rules of Origin, AANZFTA
Document Type:
Decision Compilation
Organization / Institution:
AANZFTA SC-ROO
Author:
AANZFTA SC-ROO
Target Audience:
ROO practitioners, Customs Officials, ASEAN Secretariat
Validity Period:
Ongoing, regularly updated
Approval Date:
28 October - 1 November 2014
Date of Changes:
Various updates between 2014-2022
Contextual Description:
Compilation of decisions, understandings, and clarifications on Rules of Origin from AANZFTA sub-committee meetings from 2010 to 2022.
Year:
2010–2022
Region / city:
Bali, Indonesia; Bandung, Indonesia; Makati, Philippines; Brunei Darussalam; Cairns, Australia; Auckland, New Zealand; Da Nang, Viet Nam; Melbourne, Australia; Jakarta, Indonesia
Topic:
Rules of Origin, Operational Certification Procedures, Third Party Invoicing
Document type:
Meeting matrix / compilation of decisions
Organization / body:
AANZFTA Sub-Committee on Rules of Origin (SC-ROO)
Meetings:
1st–20th SCROO
Date of meetings:
24 May 2010 – 17 June 2022
Scope:
Implementation issues, decisions, clarifications, procedural updates for AANZFTA Parties
Note:
Year
Organization / Institution:
Iowa Prison Industries Farms
Target Audience:
Contractors