# 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