Simple Low-Density Parity Check (LDPC) Staircase Forward Error Correction (FEC) Scheme for FECFRAME
RFC 6816
Document | Type | RFC - Proposed Standard (December 2012; No errata) | |
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Authors | Vincent Roca , Mathieu Cunche , Jerome Lacan | ||
Last updated | 2015-10-14 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6816 (Proposed Standard) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Martin Stiemerling | ||
IESG note | Greg Shepherd (gjshep@gmail.com) is the document shepherd | ||
Send notices to | (None) |
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 7. Operations and Management Considerations .......................19 7.1. Operational Recommendations ...............................19 8. IANA Considerations ............................................21Show full document text