Simple Low-Density Parity Check (LDPC) Staircase Forward Error Correction (FEC) Scheme for FECFRAME
RFC 6816
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RFC - Proposed Standard
(December 2012; No errata)
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Last updated |
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2015-10-14
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IETF
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WG Document
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RFC 6816 (Proposed Standard)
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Responsible AD |
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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: 6816 INRIA
Category: Standards Track M. Cunche
ISSN: 2070-1721 INSA-Lyon/INRIA
J. Lacan
ISAE, Univ. of Toulouse
December 2012
Simple Low-Density Parity Check (LDPC) Staircase
Forward Error Correction (FEC) Scheme for FECFRAME
Abstract
This document describes a fully specified simple Forward Error
Correction (FEC) scheme for Low-Density Parity Check (LDPC) Staircase
codes that can be used to protect media streams along the lines
defined by FECFRAME. These codes have many interesting properties:
they are systematic codes, they perform close to ideal codes in many
use-cases, and they also feature very high encoding and decoding
throughputs. LDPC-Staircase codes are therefore a good solution to
protect a single high bitrate source flow or to protect globally
several mid-rate flows within a single FECFRAME instance. They are
also a good solution whenever the processing load of a software
encoder or decoder must be kept to a minimum.
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/rfc6816.
Roca, et al. Standards Track [Page 1]
RFC 6816 Simple LDPC-Staircase FEC Scheme December 2012
Copyright Notice
Copyright (c) 2012 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 6816 Simple LDPC-Staircase FEC Scheme December 2012
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 ..................................................8
4.1. Restrictions ...............................................9
4.2. ADU Block Creation .........................................9
4.3. Source Block Creation .....................................11
5. LDPC-Staircase FEC Scheme for Arbitrary ADU Flows ..............13
5.1. Formats and Codes .........................................13
5.1.1. FEC Framework Configuration Information ............13
5.1.2. Explicit Source FEC Payload ID .....................14
5.1.3. Repair FEC Payload ID ..............................16
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
6.3. When Several Source Flows Are to Be Protected Together ....19
6.4. Baseline Secure FEC Framework Operation ...................19
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