Random Linear Network Coding (RLNC)-Based Symbol Representation
draft-heide-nwcrg-rlnc-03

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NWCRG                                                           J. Heide
Internet-Draft                                             Steinwurf Aps
Intended status: Experimental                                     S. Shi
Expires: March 12, 2020                                         K. Fouli
                                                               M. Medard
                                              Code On Network Coding LLC
                                                                V. Chook
                                                            Inmarsat PLC
                                                      September 09, 2019

    Random Linear Network Coding (RLNC)-Based Symbol Representation
                       draft-heide-nwcrg-rlnc-03

Abstract

   This document describes a symbol representation for Random Linear
   Network Coding (RLNC) schemes used for reliable data transfer.
   Specifically, the following features are discussed and incorporated:
   both block RLNC and a sliding window RLNC, varying data frame sizes,
   and one or multiple symbols associated with a single symbol
   representation header.

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].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on March 12, 2020.

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Copyright Notice

   Copyright (c) 2019 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Symbol Representation . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Representation Setup  . . . . . . . . . . . . . . . . . .   4
     2.2.  Field Types and Formats . . . . . . . . . . . . . . . . .   5
     2.3.  Externally Specified Parameters Required  . . . . . . . .   7
     2.4.  Small Encoding Window . . . . . . . . . . . . . . . . . .   7
       2.4.1.  Examples  . . . . . . . . . . . . . . . . . . . . . .   9
     2.5.  Large Encoding Window . . . . . . . . . . . . . . . . . .  10
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   Symbol representation specifies the format of the symbol-carrying
   data unit that is to be used in network coding operations, including
   header format and symbol concatenation.  This document describes a
   symbol representation format intended to be used for Network Coding
   in general, and for Random Linear Network Coding (RLNC) in particular
   [HK03].

   Owing to its dynamic structure, network coding has requirements that
   are distinct from conventional point-to-point codes, leading to a
   highly reconfigurable symbol set.  Consequently, the design choices
   related to symbol representation are particularly important in
   network coding as they have a direct impact on the viability of
   network protocols, topologies, and architecture [RLNC-Background].
   For example, recoding [RLNC-Background] requires the coefficients to

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