Summary of pCR [FS_6G_MED] Considerations on Work Topic 1: Media Delivery Requirements for Intelligent Immersive Calling

Document Information

• Source: Huawei
• Document Number: S4-260080
• Meeting: TSG-SA4 Meeting #135, February 9-13, 2026, Goa, India
• Specification: 3GPP TR 26.870
• Purpose: Approval

Introduction and Rationale

This pCR proposes updates to clause 4.2 of TR 26.870, introducing new requirements for intelligent immersive calling services. The contribution is motivated by SA1's work on TR 22.870, which identified use cases for immersive communication leveraging 6G technologies and AI capabilities. The focus is on enabling wearable devices (AR/VR glasses) and smart devices (smart TVs, watches) to provide intelligent immersive calling services, particularly targeting the aging population.

Main Technical Contributions

Use Case: Intelligent Immersive Calling Services

Core Concept

The use case describes one-to-one communication with multiple devices and media rendering capabilities (split-rendering or spatial computing rendering), where multi-modality data (video/text/audio/avatar) is transmitted. The service is empowered by AI capabilities including generative AI and multi-modal models, taking input from various smart devices and sensors.

User Story 1: Medical Consultation Scenario

• Participants: User A (elderly patient) and User B (medical examiner)
• Setup: User A uses smart TV, cameras, medical sensors, and smart watches in her living room; User B uses VR glasses
• Media Flow:
• Uplink: Smart TV and cameras send video data to 6G system
• Processing: System performs transcoding from video to immersive media codecs to reconstruct User A's living room
• Downlink: Rendered immersive media sent to User B's VR glasses
• Additional data: Smart watches and medical sensors collect and transmit medical data (blood pressure, heart rate)
• Data presentation: Medical data transformed according to user intent (e.g., text-to-video) but not rendered if user chooses not to share

User Story 2: Eye-Contact Enablement

• Challenge: VR glasses cover part of user's face
• Solution:
• Camera in VR glasses collects eye tracking data
• Network receives eye tracking data and user's facial picture
• Real-time face rendering performed by network
• Rendered video sent downlink to other user
• Result: User A can see User B's face with proper eye contact on her smart TV

User Story 3: Intent Understanding

• Capability: User conveys intentions via voice/gestures
• Processing:
• Device captures media data and sends to network
• Network interprets data using AI technologies (e.g., LLM)
• System fulfills user intention
• Example: User B requests medical data (blood pressure, heart rate) via voice or gesture; 6G system interprets intent and renders scene with requested medical data; further UI adjustments possible through gesture or voice

User Story 4: Multi-Party Scenario

• Participant: User C (User A's son) joins using smart AR glass
• Capability: Can adjust video stream from right to left camera via gestures for monitoring purposes

Requirements Identified

The following technical requirements are introduced for intelligent immersive calling/conferencing:

1. Support for 4K + HDR uplink video for intelligent immersive calling
2. Eye tracking capability support
3. User intention understanding capability (via voice/gesture)
4. Tiered QoE support taking device capabilities into account
5. IMS extension support - protocol extensions should be possible
6. Multi-media transporting - review protocol for extensions

Technical Implications

The use case demonstrates requirements for:
- Multi-device coordination and synchronization
- Real-time video transcoding to immersive media formats
- AI-based processing for face rendering, intent recognition, and scene reconstruction
- Multi-modal data integration (video, audio, sensor data, biometric data)
- Device-aware QoE management
- Network-based rendering and processing capabilities
- Protocol extensions to support new modalities and interaction paradigms