5G • 5G-Advanced (Rel-18)
Spatial Audio Stream Transport
3GPP Object-Based 3D Spatial Audio Protocol
Standardized protocol for streaming multi-channel object-based 3D audio, adjusting sound field orientations instantaneously as user head poses rotate.
Technical Explanation
In immersive telepresence and metaverse applications, audio cannot be a simple stereo mix: individual audio objects must be rendered in 3D space relative to user head orientation. Rel-18 defines low-latency audio transport profiles that synchronize audio object position vectors with head-tracking coordinates, maintaining sub-10 ms acoustic localization.
Key Functions
- Streams object-based 3D acoustic fields with dynamic positional metadata
- Coordinates head-tracking orientation data with real-time acoustic binaural rendering
- Delivers ultra-low latency audio packet transmission to prevent spatial disorientation
- Supports multi-speaker spatial conferencing and immersive virtual world telepresence
Specifications
3GPP TR 26.928, TS 26.114 (Rel-18)
Interfaces
Uu (User Plane)N6
Want to memorize 5G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.