This standard defines the ATSC Link-Layer Protocol (ALP). ALP corresponds to the data link layer in the OSI 7-layer model. ALP provides a path to deliver IP packets, link layer signaling packets, and MPEG-2 Transport Stream (TS) packets down to the RF Layer and back, after reception. ALP also optimizes the proportion of useful data in the ATSC 3.0 Physical Layer by means of efficient encapsulation and overhead reduction mechanisms for IP and MPEG-2 TS transport. ALP provides extensible headroom for future use.
Download current version: A/330:2022-03, “Link-Layer Protocol”, published 31 March 2022. This version of the Standard is normatively referenced in A/300:2022-04.
There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations
Download A/330:2019, “Link-Layer Protocol”, approved 3 May 2019. This version is referenced by A/300:2019, A/300:2020, and A/300:2021.
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The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.