Summary of 3GPP Change Request S4-26xxxx

Document Information

• Source: LG Electronics Inc.
• Title: Consideration on Media Delivery Architecture
• Specification: 3GPP TR 26.807 (FS_6G_MED)
• Purpose: Proposal for Agreement

Main Technical Contribution

Multi-network Cooperative Media Delivery Architecture (New Clause 6.1.x)

Core Concept

The contribution proposes a fundamental shift in 6G media delivery architecture from parallel network usage to functional decomposition and cooperative delivery across heterogeneous networks. Key aspects include:

• Integration of heterogeneous networks: Broadcast, mobile communication, fixed IP, and satellite networks operate as a unified media delivery system
• Role-based network assignment: Each network assumes distinct roles based on content characteristics
• Non-3GPP networks as equal partners: Broadcast and other non-3GPP networks treated as equal delivery resources rather than auxiliary means

Functional Decomposition Approach

Media content is decomposed into constituent elements, with each delivered through the most appropriate network:

• Common content (e.g., main video stream of live sports): Delivered via broadcast/multicast networks for efficiency during massive simultaneous viewing
• Personalized elements (e.g., advertisements, UI, viewpoint selection, commentary): Delivered via unicast/IP networks on per-user basis
• Interactive data and control components: Handled through appropriate low-latency paths

Media-Aware Network Operation

The architecture enables semantic-aware delivery where:

• Networks recognize media content meaning and characteristics
• Dynamic adjustment between broadcast/unicast and fixed/mobile based on:
• Scale of concurrent consumption
• Latency sensitivity
• Energy efficiency requirements
• User mobility
• AI-based control functions perform real-time optimization
• Cooperation with user devices and service providers

Application Scenarios

The architecture applies to:

• Streaming-based media services: Traditional video delivery with personalization
• XR and spatial media services:
• Base video streams/spatial information via broadcast paths
• User-specific viewpoint changes and interaction data via low-latency 6G unicast
• Achieves both scalability and immersion

6G Network Role Evolution

6G evolves from direct traffic accommodation to:

• Central orchestrator of heterogeneous media delivery ecosystem
• Higher-level platform providing integrated control over diverse network resources
• Intelligent network composer automatically selecting optimal network combinations based on media characteristics

Standardization Considerations

• Need for common interfaces enabling improved accessibility to non-3GPP standards (including broadcast systems like DVB and ATSC)
• Addresses limitations of 5G approach which focused primarily on parallel network usage
• Moves beyond independent treatment of broadcast and mobile systems

Conclusions (Clause 6.1.x.2)

The 6G media architecture:
- Supports coexistence of heterogeneous networks for media services
- Separates transmission methods per media element with intelligent integration
- Simultaneously supports massive simultaneous viewing and hyper-personalized interactive media
- Applicable across multicast/broadcast, streaming, XR, and next-generation immersive media

Related Requirements (Clause 6.1.x.3)

The proposal maps to existing TS 22.870 requirements:

Clause 5.4.2 - Legacy Services Support

• Broadcast and Multicast Services (ref TS 22.261)

Clause 5.9.8 - Enhanced Network Service Awareness

• [PR 5.9.8.2-1]: 3rd party service provider information sharing on service characteristics per traffic flow component
• [PR 5.9.8.2-2]: Dynamic network resource adjustment based on service characteristics and predicted changes
• [PR 5.9.8.2-3]: Charging support for differentiated services per media component

Clause 11.2 - UAM Aircraft Communications

References performance requirements for various media services on UAM aircraft including:
- 8K video live broadcast (100 Mbps uplink, 200ms latency, 95% reliability)
- Video streaming (4-100 Mbps depending on resolution, 100ms latency, 95% reliability)
- Remote controller through HD video (≥25 Mbps uplink, 100ms latency, 99% reliability)
- Video conferencing (25 Mbps bidirectional, 100ms latency, 99% reliability)
- Immersive multimedia services/cloud gaming (100-500 Mbps downlink, 50ms latency, 99% reliability)

All services specified for up to 1000m altitude AGL in urban/rural/scenic areas.