Forward Error Correction (FEC) Framework version 2
draft-roca-tsvwg-fecframev2-01

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TSVWG                                                            V. Roca
Internet-Draft                                                     INRIA
Obsoletes: 6363 (if approved)                                   A. Begen
Intended status: Standards Track                         Networked Media
Expires: January 8, 2017                                    July 7, 2016

           Forward Error Correction (FEC) Framework version 2
                     draft-roca-tsvwg-fecframev2-01

Abstract

   This document describes a framework for using Forward Error
   Correction (FEC) codes with applications in public and private IP
   networks to provide protection against packet loss.  The framework
   supports applying FEC to arbitrary packet flows over unreliable
   transport and is primarily intended for real-time, or streaming,
   media.  This framework can be used to define Content Delivery
   Protocols that provide FEC for streaming media delivery or other
   packet flows.  Content Delivery Protocols defined using this
   framework can support any FEC scheme (and associated FEC codes) that
   is compliant with various requirements defined in this document.
   Thus, Content Delivery Protocols can be defined that are not specific
   to a particular FEC scheme, and FEC schemes can be defined that are
   not specific to a particular Content Delivery Protocol.  The first
   version of FECFRAME defined in [RFC6363] was restricted to block FEC
   codes.  The FECFRAME version 2 defined in this document adds the
   possibility to use Convolutional FEC Codes in addition to Block FEC
   Codes.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 8, 2017.

Roca & Begen             Expires January 8, 2017                [Page 1]
Internet-Draft           FEC Framework version 2               July 2016

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definitions and Abbreviations . . . . . . . . . . . . . . . .   5
   3.  Architecture Overview . . . . . . . . . . . . . . . . . . . .   8
   4.  Procedural Overview . . . . . . . . . . . . . . . . . . . . .  12
     4.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .  12
     4.2.  Sender Operation with Block FEC Codes . . . . . . . . . .  14
     4.3.  Receiver Operation  with Block FEC Codes  . . . . . . . .  16
     4.4.  Sender Operation with Convolutional FEC Codes . . . . . .  19
     4.5.  Receiver Operation with Convolutional FEC Codes . . . . .  22
   5.  Protocol Specification  . . . . . . . . . . . . . . . . . . .  23
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .  23
     5.2.  Structure of the Source Block with Block FEC Codes  . . .  24
     5.3.  Packet Format for FEC Source Packets  . . . . . . . . . .  24
       5.3.1.  Generic Explicit Source FEC Payload ID  . . . . . . .  25
     5.4.  Packet Format for FEC Repair Packets  . . . . . . . . . .  26
       5.4.1.  Packet Format for FEC Repair Packets over RTP . . . .  27
     5.5.  FEC Framework Configuration Information . . . . . . . . .  27
     5.6.  FEC Scheme Requirements . . . . . . . . . . . . . . . . .  29
   6.  Feedback  . . . . . . . . . . . . . . . . . . . . . . . . . .  31
   7.  Transport Protocols . . . . . . . . . . . . . . . . . . . . .  32
   8.  Congestion Control  . . . . . . . . . . . . . . . . . . . . .  32
     8.1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .  32
     8.2.  Normative Requirements  . . . . . . . . . . . . . . . . .  33
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