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Fecframe Status Pages

FEC Framework (Concluded WG)
Tsv Area: Zaheduzzaman Sarker, Martin Duke | 2006-May-02 — 2013-Mar-06 

2012-09-10 charter

FEC Framework (fecframe)


 Current Status: Active

     Greg Shepherd <gjshep@gmail.com>

 Transport Area Directors:
     Wesley Eddy <wes@mti-systems.com>
     Martin Stiemerling <martin.stiemerling@neclab.eu>

 Transport Area Advisor:
     Martin Stiemerling <martin.stiemerling@neclab.eu>

 Mailing Lists:
     General Discussion: fecframe@ietf.org
     To Subscribe:       https://www.ietf.org/mailman/listinfo/fecframe
     Archive:            http://www.ietf.org/mail-archive/web/fecframe

Description of Working Group:

    The object of this group is to develop specifications for using forward
    error correction (FEC) codes with applications in the Internet to
    provide protection against packet loss. The group will develop a
    protocol framework for application of FEC codes to arbitrary packet
    flows over unreliable transport protocols over both IP multicast and
    unicast. The application of the FEC codec on an aggregate of multiple
    packet flows may be investigated and considered to be included in the

    The FECFrame working group will use the building block approach (RFC
    3269), especially the FEC Building Block (RFC 3452), developed by the
    RMT working group. The FEC Building Block was developed to ensure that
    the RMT framework developed can support multiple FEC codes and maintain
    independence between FEC codes and protocols based on the framework.
    The FECFrame WG may develop new FEC schemes if necessary to provide
    substantial performance gains for the intended applications. However
    the acceptance of any FEC scheme will require multiple, prior, detailed
    reviews of the FEC code by independent experts from both the IETF and
    the broader community, since it is likely that the IETF working group
    will not include a large enough number of suitable experts in its
    working set. If these reviews are positive, then Working Group
    acceptance of an FEC scheme work item still needs the approval of the
    responsible Area Director.

    A primary objective of this framework is to support FEC for real-time
    media applications using RTP over UDP, such as on demand streaming and
    audio/video broadcast. Other potential usages of the framework may be
    brought to the working group for consideration during the development
    of the requirements, to enable future support of those usages. The
    group will coordinate closely with the AVT and MMUSIC working groups to
    ensure that the streaming use-case is fully specified both in terms of
    interactions with RTP/RTCP and application layer signalling. The group
    will also coordinate with the DCCP working group, at least to consider
    that transport protocol's role in streaming media. The interactions of
    the framework with existing and used security mechanisms must also be

    The group will work with the RMT working group to ensure that the FEC
    Building Block defined in RMT supports both the RMT use-cases (object
    delivery over multicast) and the more general FEC protection of
    flow(s) over unreliable unicast and multicast transport.

    Specification of hybrid schemes involving both retransmission and
    forward error correction is out of scope of the group.

Goals and Milestones:
  Done     - Working Group consensus on requirements and their prioritization for the FEC protocol framework
  Done     - Completed selection of solution to develop and mature
  Done     - FEC framework requirements WG soft-freeze
  Done     - FEC Streaming Framework WG soft-freeze
  Done     - FEC Grouping informational draft submitted to MMUSIC
  Done     -  FEC Streaming Framework submitted as Proposed Standard - assigned RFC 6363
  Done     - Usage of FEC framework with RTP submitted as Proposed Standard
  Done     - FEC SDP Elements to IESG for PS - assigned RFC 6364
  Done     - Interleaved FEC Scheme to IESG for PS - assigned RFC 6015
  Done     - Raptor FEC Schemes for FECFrame submitted as PS - assigned RFC 6681
  Done     - RTP Payload format for Raptor FEC submitted as PS - assigned RFC 6682
  Done     - Guidelines for Implementing DVB Hybrid FEC submitted as Informational - assigned RFC 6683
  Done     - Methods to Convey FECFrame configuration information submitted as PS - assigned RFC 6695
  Mar 2012 - Simple LDPC-Staircase FEC Scheme submitted to IESG as PS
  Mar 2012 -  Simple RS FEC Scheme submitted to IESG as PS
  Jun 2012 -  Pseudo CDP for protecting multiple flows submitted to IESG as PS

All charter page changes, including changes to draft-list, rfc-list and milestones:

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