[Fecframe] Abstract proposal for the dvb al-fec draft

["Ali C. Begen (abegen)" <abegen at cisco.com>]

Any comments, suggestions?

-acbegen

The Annex E of the DVB-IPTV technical specification defines an optional Application-layer Forward Error Correction (AL-FEC) protocol to protect the streaming media carried over RTP transport. The DVB-IPTV AL-FEC protocol uses two layers for FEC protection. The first (base) layer is based on the 1-D interleaved parity code. The second (enhancement) layer is based on the Raptor code. By offering a layered approach, the DVB AL-FEC offers a good protection against both bursty and random packet losses at a cost of decent complexity. This document describes how one can implement the DVB-IPTV AL-FEC protocol by using the 1-D interleaved parity code and Raptor code that have already been specified in separate documents.