Study on 5G media streaming extensions
This Technical Report identifies and evaluates a set of potential improvements and extensions, referred to as key topics. The initial set of key topics were:
- Content Preparation
- Traffic Identification
- Use of HTTP/3 in the Media Delivery System
- Additional / New transport protocols
- Uplink media streaming
- Background traffic
- Content Aware Streaming
- Network Event usage
- Per-application-authorization
- Support for encrypted and high-value content
- Scalable distribution of unicast Live Services
- Network Slicing Extensions for 5G Media Streaming
- 3GPP Service Handler and URLs
- 5GMS Application Server configuration and management.
In an extension, a second set of key topics were collected as follows:
- Media Delivery Specification.
- Common Client Metadata.
- Common Server-and Network-Assisted Streaming.
- Multi-Access Media Delivery.
- Media Delivery from multiple service endpoints/location.
- Modem Usage Optimized Media Streaming.
- DASH/HLS Interoperability.
- Further harmonization of RTC and Streaming for Advanced Media Delivery.
- Improved QoS support for Media Streaming services.
- QUIC-based segmented media delivery.
- In-band signalling of QoS for 5G Media Streaming.
- Dynamic content generation from multiple sources.
For each of the above key topics, the following objectives are identified:
1. Document the above key topics in more detail, in particular how they relate to the 5GMS Architecture and protocols.
2. Study collaboration scenarios between the 5G System and Application Provider for each of the key topics.
3. Based on the 5GMS Architecture, develop one or more deployment architectures that address the key topics and the collaboration models.
4. Map the key topics to basic functions and develop high-level call flows.
5. Identify the issues that need to be solved.
6. Provide candidate solutions (including call flows) for each of the identified issues.
7. Coordinate work with other 3GPP groups e.g. SA2, SA3, SA5, and others as needed.
8. Coordinate work with external organizations such as SVTA (in particular DASH-IF WG), CTA WAVE, ISO/IEC JTC29 WG3 (MPEG Systems), or IETF, as needed.
9. Identify gaps and recommend potential normative work for stage-2 call flows and possibly stage-3.