SA WG4 - Multimedia Codecs, Systems and Services

Within the 3GPP Technical Specification Group Service and System Aspects (SA), the main objectives of the 3GPP TSG SA WG4 (SA4) are the specifications of codecs for speech, audio, video, graphics and other media types related to emerging services such as extended realities (XR) and gaming, as well as the system and delivery aspects of such contents.

These objectives includes defining content formats and delivery protocols for unicast, multicast and broadcast streaming, cloud and edge computing architectures, media APIs, media handling in multimedia telephony, terminal acoustics requirements and performance testing, end-to-end service performance, objective and subjective quality testing, quality of experience (QoE) metrics, definition of traffic characteristics for media services, reporting for all services involving media aspects, and the use of artificial intelligence and machine learning models for multimedia.

SA WG4 is currently responsible for the XR-based services and traffic characteristics, Next Generation Video for 5G, Media Distribution over 5G unicast/multicast and broadcast, Media Cloud and Edge Processing in 5GS, Glass-based Augmented Reality, VR conferencing, Immersive Voice and Audio Services and Extension for headset interface tests of UE.

Terms of Reference

The latest terms of reference were approved at TSG SA#90 in document SP-200929.