Reliable and Available Wireless Architecture
draft-pthubert-raw-architecture-00

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RAW                                                      P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Informational                         G.Z. Papadopoulos
Expires: 3 October 2020                                   IMT Atlantique
                                                            1 April 2020

              Reliable and Available Wireless Architecture
                   draft-pthubert-raw-architecture-00

Abstract

   Due to uncontrolled interferences, including the self-induced
   multipath fading, deterministic networking can only be approached on
   wireless links.  The radio conditions may change -way- faster than a
   centralized routing can adapt and reprogram, in particular when the
   controller is distant and connectivity is slow and limited.  RAW
   separates the routing time scale at which a complex path is
   recomputed from the forwarding time scale at which the forwarding
   decision is taken for an individual packet.  RAW operates at the
   forwarding time scale.  The RAW problem is to decide, within the
   redundant solutions that are proposed by the routing, which will be
   used for each individual packet to provide a DetNet service while
   minimizing the waste of resources.

Status of This Memo

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   This Internet-Draft will expire on 3 October 2020.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Thubert & Papadopoulos   Expires 3 October 2020                 [Page 1]
Internet-Draft              RAW Architecture                  April 2020

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   Please review these documents carefully, as they describe your rights
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Use Cases and Requirements Served . . . . . . . . . . . . . .   5
     3.1.  Radio Access Protection . . . . . . . . . . . . . . . . .   6
     3.2.  Track Protection in a Wireless Mesh . . . . . . . . . . .   6
   4.  RAW Architecture Considerations . . . . . . . . . . . . . . .   6
     4.1.  Related Work at The IETF  . . . . . . . . . . . . . . . .   7
     4.2.  Prerequisites . . . . . . . . . . . . . . . . . . . . . .   8
     4.3.  Routing Time Scale vs. Forwarding Time Scale  . . . . . .   8
     4.4.  Track Source-Routed vs. Distributed RAW Decision  . . . .  10
   5.  RAW Architecture Components . . . . . . . . . . . . . . . . .  11
     5.1.  Reliability and Availability  . . . . . . . . . . . . . .  11
     5.2.  Wireless Tracks . . . . . . . . . . . . . . . . . . . . .  11
     5.3.  PAREO Functions . . . . . . . . . . . . . . . . . . . . .  11
       5.3.1.  Packet Replication  . . . . . . . . . . . . . . . . .  12
       5.3.2.  Packet Elimination  . . . . . . . . . . . . . . . . .  13
       5.3.3.  Promiscuous Overhearing . . . . . . . . . . . . . . .  13
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  ConTributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   Bringing determinism in a packet network means eliminating the
   statistical effects of multiplexing that result in probabilistic
   jitter and loss.  This can be approached with a tight control of the
   physical resources to maintain the amount of traffic within a
   budgetted volume of data per unit of time that fits the physical
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