SA4#135 Meeting Agenda Summary

Meeting Details

Meeting: SA4#135
Format: Face-to-face meeting
Dates: Monday 9th February 2026 (09:00) - Friday 13th February 2026 (16:00)
Registration: Required prior to meeting start; check-in required by meeting end time
Document Submission Deadline: Tuesday 3rd February 2026 (23:59 CET) - Late documents will NOT be handled

Key Administrative Notes

• This meeting counts toward maintenance of voting rights per 3GPP WP article 35.4
• Documents should be registered primarily for Agenda Items 6, 7-11, and 18
• Each document must be registered under only one Agenda Item
• SWG attendance does not count toward voting rights maintenance

Sub-Working Group (SWG) Structure

Four parallel SWGs with separate registration and meetings:
- Audio SWG (Meeting ID: 83989)
- MBS SWG (Meeting ID: 83990)
- RTC SWG (Meeting ID: 83991)
- Video SWG (Meeting ID: 83992)

Main Technical Work Areas

Release 19 and Earlier Matters (AI 14)

Maintenance and finalization of existing specifications across all SWGs.

Release 20 Planning and Features

Audio SWG Work Items (AI 7, 15.1, 15.3)

Active Work Items:
- DaCAS - Diverse audio CApturing System for UEs
- ATIAS_Ph3 - Terminal Audio quality performance and Test methods for Immersive Audio Services, Phase 3

Study Items:
- FS_ACAPI - Study on Audio Codec APIs
- FS_ULBC - Study on Ultra Low Bitrate Speech Codec

MBS SWG Work Items (AI 8)

Study Items:
- FS_Energy_Ph2_MED - Study on Media energy consumption exposure and evaluation framework Phase 2
- FS_AMD_Ph2 - Study on Advanced Media Delivery Phase 2
- FS_QStream_MED - Study on evaluation of QUIC-based protocols for on-demand and live video services

Video SWG Work Items (AI 9)

Study Items:
- FS_AVFOPS_MED - Study of Advanced Video Formats and Operation Points
- FS_3DGS_MED - Study on 3D Gaussian splats
- FS_AIF_MED - Study on Advanced Image Formats
- FS_Avatar_Ph2_MED - Study on Avatar communication Phase 2

RTC SWG Work Items (AI 10, 15.2)

Active Work Item:
- AI_IMS-MED - Media aspects for AI/ML in IMS services

Study Items:
- FS_DCTC_eQOS_MED - Study on Usage of Dynamically Changing Traffic Characteristics and Enhanced QoS support in Media Applications and Services
- FS_Q4RTC_MED - Study on QUIC-based Media Delivery for Real-time Communication
- FS_DCE_MED - Study on IMS DC Enhancements

SA4-Level Topics (AI 11)

Study Item:
- FS_6G_MED - Study on Media aspects for 6G System

New Work Considerations (AI 18)

Structured into three categories:
- AI 18.1: New Work Items and Study Items for Rel-20 5G-Advanced
- AI 18.2: New Study Items for Rel-20 6G
- AI 18.3: Other new work proposals

Standard Agenda Items

• AI 5: Reports/Liaisons from other groups (SWG ad hocs, other 3GPP groups, external groups)
• AI 6: Issues for immediate consideration (including Rel-20 planning)
• AI 12: LSs received during the meeting and Postponed Liaisons
• AI 13: Reports from sub-working groups
• AI 16: Consolidated Study Items review
• AI 17: Work Items and Study Items under responsibility of other TSGs/WGs impacting SA4
• AI 19: Postponed issues
• AI 20: Future work plan review
• AI 21: Any Other Business

Technical Focus Areas Summary

The meeting agenda reflects SA4's comprehensive media-related work across:
1. Audio technologies - Codec APIs, ultra-low bitrate codecs, diverse capturing systems, immersive audio testing
2. Video technologies - Advanced formats, 3D Gaussian splats, advanced image formats, avatar communication
3. Streaming/Broadcasting - Advanced media delivery, QUIC protocols, energy consumption
4. Real-time Communications - AI/ML integration, QUIC for RTC, enhanced QoS, IMS DC enhancements
5. Cross-cutting topics - 6G media aspects, energy efficiency