Forward Error Correction (FEC) Building Block
RFC 5052
| Document | Type |
RFC - Proposed Standard
(August 2007; Errata)
Obsoletes RFC 3452
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5052 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Magnus Westerlund | ||
| Send notices to | (None) | ||
Network Working Group M. Watson
Request for Comments: 5052 M. Luby
Obsoletes: 3452 L. Vicisano
Category: Standards Track Digital Fountain
August 2007
Forward Error Correction (FEC) Building Block
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document describes how to use Forward Error Correction (FEC)
codes to efficiently provide and/or augment reliability for bulk data
transfer over IP multicast. This document defines a framework for
the definition of the information that needs to be communicated in
order to use an FEC code for bulk data transfer, in addition to the
encoded data itself, and for definition of formats and codes for
communication of that information. Both information communicated
with the encoded data itself and information that needs to be
communicated 'out-of-band' are considered. The procedures for
specifying new FEC codes, defining the information communication
requirements associated with those codes and registering them with
the Internet Assigned Numbers Authority (IANA) are also described.
The requirements on Content Delivery Protocols that wish to use FEC
codes defined within this framework are also defined. The companion
document titled "The Use of Forward Error Correction (FEC) in
Reliable Multicast" describes some applications of FEC codes for
delivering content. This document obsoletes RFC 3452.
Watson, et al. Standards Track [Page 1]
RFC 5052 FEC Building Block August 2007
Table of Contents
1. Introduction ....................................................3
2. Definitions and Abbreviations ...................................4
3. Requirements Notation ...........................................4
4. Rationale .......................................................5
5. Applicability Statement .........................................6
6. Functionality ...................................................6
6.1. FEC Schemes ................................................8
6.2. FEC Object Transmission Information .......................10
6.2.1. Transport of FEC Object Transmission Information ...11
6.2.2. Opacity of FEC Object Transmission Information .....12
6.2.3. Mandatory FEC Object Transmission
Information Elements ...............................12
6.2.4. Common FEC Object Transmission Information
Elements ...........................................12
6.2.5. Scheme-Specific FEC Object Transmission
Information Element ................................13
6.3. FEC Payload ID ............................................13
7. FEC Scheme Specifications ......................................14
8. CDP Specifications .............................................17
9. Common Algorithms ..............................................18
9.1. Block Partitioning Algorithm ..............................18
9.1.1. First Step .........................................18
9.1.2. Second step ........................................19
10. Requirements from Other Building Blocks .......................20
11. Security Considerations .......................................20
12. IANA Considerations ...........................................21
12.1. Explicit IANA Assignment Guidelines ......................21
13. Changes from RFC 3452 .........................................22
14. Acknowledgments ...............................................23
15. References ....................................................23
15.1. Normative References .....................................23
15.2. Informative References ...................................23
Watson, et al. Standards Track [Page 2]
RFC 5052 FEC Building Block August 2007
1. Introduction
This document describes how to use Forward Error Correction (FEC)
codes to provide support for reliable delivery of content within the
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