Exploiting Packet Replication and Elimination in Complex Tracks in LLNs
draft-papadopoulos-paw-pre-reqs-00

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PAW                                                 G. Papadopoulos, Ed.
Internet-Draft                                              N. Montavont
Intended status: Standards Track                          IMT Atlantique
Expires: August 1, 2019                                       P. Thubert
                                                                   Cisco
                                                        January 28, 2019

Exploiting Packet Replication and Elimination in Complex Tracks in LLNs
                   draft-papadopoulos-paw-pre-reqs-00

Abstract

   Packet Replication and Elimination mechanism consists in duplicating
   data packets into several paths in the network to increase
   reliability and provide low jitter.  Over a wireless medium, this
   technique can take advantage of communication overhearing, when
   parallel transmissions over two adjacent paths are scheduled.  This
   document presents the concept and details the required changes to the
   current specifications that will be necessary to enable this.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 1, 2019.

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
   Provisions Relating to IETF Documents
   (https://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

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   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Tracks  . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Tracks Overview . . . . . . . . . . . . . . . . . . . . .   3
     3.2.  Complex Tracks  . . . . . . . . . . . . . . . . . . . . .   3
   4.  Packet Replication and Elimination principles . . . . . . . .   3
     4.1.  Packet Replication  . . . . . . . . . . . . . . . . . . .   4
     4.2.  Packet Elimination  . . . . . . . . . . . . . . . . . . .   5
     4.3.  Promiscuous Overhearing . . . . . . . . . . . . . . . . .   5
   5.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Requirements Related to Alternative Parent Selection  . .   5
     5.2.  Requirements Related to Propagated Information  . . . . .   6
     5.3.  Requirements Related to Cell Reservation  . . . . . . . .   7
     5.4.  Requirements Related to Cells without ACKs  . . . . . . .   8
     5.5.  Requirements Related to Packet Elimination  . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Informative references  . . . . . . . . . . . . . . . . .   9
     8.2.  Other Informative References  . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   This draft describes industrial use cases which require deterministic
   flows over wireless multi-hop paths.

   The PAW use cases explicitly do not propose or suggest any specific
   solution or design for PAW architecture or protocols.  These are
   subjects of other PAW drafts.  The PAW use cases are not considered
   as concrete requirements by the PAW Working Group.

   The industrial use cases covered in this draft are professional
   audio, wireless for industrial applications and amusement parks.

2.  Terminology

   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 [RFC2119].

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