Simple Reed-Solomon Forward Error Correction (FEC) Scheme for FECFRAME
RFC 6865
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RFC - Proposed Standard
(February 2013; No errata)
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Last updated |
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2015-10-14
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IETF
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RFC 6865 (Proposed Standard)
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Martin Stiemerling
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Greg Shepherd (gjshep@gmail.com) is the document shepherd
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Internet Engineering Task Force (IETF) V. Roca
Request for Comments: 6865 INRIA
Category: Standards Track M. Cunche
ISSN: 2070-1721 INSA-Lyon/INRIA
J. Lacan
ISAE, Univ. of Toulouse
A. Bouabdallah
CDTA
K. Matsuzono
Keio University
February 2013
Simple Reed-Solomon Forward Error Correction (FEC) Scheme for FECFRAME
Abstract
This document describes a fully-specified simple Forward Error
Correction (FEC) scheme for Reed-Solomon codes over the finite field
(also known as the Galois Field) GF(2^^m), with 2 <= m <= 16, that
can be used to protect arbitrary media streams along the lines
defined by FECFRAME. The Reed-Solomon codes considered have
attractive properties, since they offer optimal protection against
packet erasures and the source symbols are part of the encoding
symbols, which can greatly simplify decoding. However, the price to
pay is a limit on the maximum source block size, on the maximum
number of encoding symbols, and a computational complexity higher
than that of the Low-Density Parity Check (LDPC) codes, for instance.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6865.
Roca, et al. Standards Track [Page 1]
RFC 6865 Simple Reed-Solomon FEC Scheme February 2013
Copyright Notice
Copyright (c) 2013 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
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Roca, et al. Standards Track [Page 2]
RFC 6865 Simple Reed-Solomon FEC Scheme February 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Definitions Notations and Abbreviations . . . . . . . . . . . 5
3.1. Definitions . . . . . . . . . . . . . . . . . . . . . . . 5
3.2. Notations . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 8
4. Common Procedures Related to the ADU Block and Source
Block Creation . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1. Restrictions . . . . . . . . . . . . . . . . . . . . . . . 9
4.2. ADU Block Creation . . . . . . . . . . . . . . . . . . . . 9
4.3. Source Block Creation . . . . . . . . . . . . . . . . . . 10
5. Simple Reed-Solomon FEC Scheme over GF(2^^m) for Arbitrary
ADU Flows . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. Formats and Codes . . . . . . . . . . . . . . . . . . . . 12
5.1.1. FEC Framework Configuration Information . . . . . . . 12
5.1.2. Explicit Source FEC Payload ID . . . . . . . . . . . . 14
5.1.3. Repair FEC Payload ID . . . . . . . . . . . . . . . . 15
5.2. Procedures . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3. FEC Code Specification . . . . . . . . . . . . . . . . . . 17
6. Security Considerations . . . . . . . . . . . . . . . . . . . 17
6.1. Attacks Against the Data Flow . . . . . . . . . . . . . . 17
6.1.1. Access to Confidential Content . . . . . . . . . . . . 17
6.1.2. Content Corruption . . . . . . . . . . . . . . . . . . 18
6.2. Attacks Against the FEC Parameters . . . . . . . . . . . . 18
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