A/331: ATSC Proposed Standard: Revision of A/331:2017 – Signaling, Delivery, Synchronization, and Error Protection
Approved 1 April 2019. This document is current at ballot as a Proposed Standard.
This document specifies the technical mechanisms and procedures pertaining to service signaling and IP-based delivery of a variety of ATSC 3.0 services and contents to ATSC 3.0-capable receivers over broadcast, broadband and hybrid broadcast/broadband networks. The service signaling functionality defines the data formats and information components necessary to discover and acquire user services. The IP-based delivery functionality specifies two application transport protocols for the carriage of media content and service signaling data over broadcast and/or broadband networks to receivers. The delivery functionality also includes mechanisms for the synchronization of media components delivered on the same or different transport networks, and application-layer forward error correction methods that enable error-free reception and consumption of media streams or discrete file objects.
Section 7.1.9 of this Candidate Standard includes descriptions on the DWD (Distribution Window Description). Similar descriptions appear in A/337, Section 4.3. ATSC is in the process of moving the DWD topic from A/337 to A/331.Download PDF File Download Zip File Comment/Feedback on this Document