The Terrestrial and Non Terrestrial Mobile Multimedia Multicast TR-47 committee is responsible for the development and maintenance of voluntary downlink standards for terrestrial and non-terrestrial mobile multimedia multicast systems. These standards are intended to be employed by users and suppliers to promote compatible and interoperable systems to support multicast audio, video and data requirements for a wide range of commercial and public services.

Link to TR-47 website 

More in this category: « TR-45