The IESG has approved the following document: - 'Raptor FEC Schemes for FECFRAME' (draft-ietf-fecframe-raptor-11.txt) as Proposed Standard This document is the product of the FEC Framework Working Group. The IESG contact persons are Martin Stiemerling and Wesley Eddy. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-fecframe-raptor/ Technical Summary This document describes Fully-Specified Forward Error Correction (FEC) Schemes for the Raptor and RaptorQ codes and their application to reliable delivery of media streams in the context of FEC Framework. The Raptor and RaptorQ codes are systematic codes, where a number of repair symbols are generated from a set of source symbols and sent in one or more repair flows in addition to the source symbols that are sent to the receiver(s) within a source flow. The Raptor and RaptorQ codes offer close to optimal protection against arbitrary packet losses at a low computational complexity. Six FEC Schemes are defined, two for protection of arbitrary packet flows, two that are optimised for small source blocks and another two for protection of a single flow that already contains a sequence number. Repair data may be sent over arbitrary datagram transport (e.g. UDP) or using RTP. Working Group Summary There has been controversy over this document in the past, but by now it represents WG consensus. IPR was declared, and announced in 2009 http://www.ietf.org/mail-archive/web/fecframe/current/msg00514.html updated in 2011 http://www.ietf.org/mail-archive/web/fecframe/current/msg00886.html, and updated in 2012 http://www.ietf.org/mail-archive/web/fecframe/current/msg00985.html The WG is aware of the IPR and is fine with the situation. Document Quality The document was reviewed by the WG and also by non-WG members. Personnel Document Shepherd: Greg Shepherd Responsible Area Director: Martin Stiemerling
