Random Linear Network Coding (RLNC): Background and Practical Considerations
draft-heide-nwcrg-rlnc-background-00

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NWCRG                                                           J. Heide
Internet-Draft                                             Steinwurf Aps
Intended status: Informational                                    S. Shi
Expires: August 15, 2019                                        K. Fouli
                                                               M. Medard
                                              Code On Network Coding LLC
                                                                V. Chook
                                                            Inmarsat PLC
                                                       February 11, 2019

     Random Linear Network Coding (RLNC): Background and Practical
                             Considerations
                  draft-heide-nwcrg-rlnc-background-00

Abstract

   This document describes the use of Random Linear Network Coding
   (RLNC) schemes for reliable data transport.  Both block and sliding
   window RLNC code implementations are described.  By providing erasure
   correction using randomly generated repair symbols, such RLNC-based
   schemes offer advantages in accommodating varying frame sizes and
   dynamically changing connections, reducing the need for feedback, and
   lowering the amount of state information needed at the sender and
   receiver.  The practical considerations' section identifies RLNC-
   encoded symbol representation as a valuable target for
   standardization.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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Heide, et al.            Expires August 15, 2019                [Page 1]
Internet-Draft               RLNC-Background               February 2019

   This Internet-Draft will expire on August 15, 2019.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Random Linear Network Coding (RLNC) Basics  . . . . . . .   3
     1.2.  Generation-Based RLNC . . . . . . . . . . . . . . . . . .   5
     1.3.  Sliding Window RLNC . . . . . . . . . . . . . . . . . . .   7
     1.4.  Recoding  . . . . . . . . . . . . . . . . . . . . . . . .   8
   2.  Practical Considerations  . . . . . . . . . . . . . . . . . .   9
     2.1.  Symbol Representation . . . . . . . . . . . . . . . . . .   9
       2.1.1.  Symbol Representation as a Standardization Approach .   9
       2.1.2.  Coding Parameter Design Considerations  . . . . . . .  12
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   Network Coding is a coding discipline that jointly improves network
   reliability and efficiency.  In general communication networks,
   source coding is performed as a compression mechanism to reduce data
   redundancy and to reduce resources necessary for data transportation
   over the network.  Channel coding, on the other hand, introduces
   redundancy for data transmission reliability over lossy channels.
   Network coding adds another layer of coding in-between these two.
   Random Linear Network Coding (RLNC) is an efficient network coding
   approach that enables network nodes to generate independently and
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