Reliable and Available Wireless Architecture/Framework
draft-pthubert-raw-architecture-05

Document Type Active Internet-Draft (individual)
Authors Pascal Thubert  , Georgios Papadopoulos  , Rex Buddenberg 
Last updated 2020-11-15
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RAW                                                      P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Informational                         G.Z. Papadopoulos
Expires: 19 May 2021                                      IMT Atlantique
                                                           R. Buddenberg
                                                        15 November 2020

         Reliable and Available Wireless Architecture/Framework
                   draft-pthubert-raw-architecture-05

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

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on 19 May 2021.

Copyright Notice

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

Thubert, et al.            Expires 19 May 2021                  [Page 1]
Internet-Draft         RAW Architecture/Framework          November 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  The RAW problem . . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Reliability and Availability  . . . . . . . . . . . . . .   6
       2.2.1.  High Availability Engineering Principles  . . . . . .   6
       2.2.2.  Applying Reliability Concepts to Networking . . . . .   8
       2.2.3.  Reliability in the Context of RAW . . . . . . . . . .   9
     2.3.  Use Cases and Requirements Served . . . . . . . . . . . .  10
       2.3.1.  Radio Access Protection . . . . . . . . . . . . . . .  11
       2.3.2.  End-to-End Protection in a Wireless Mesh  . . . . . .  11
     2.4.  Related Work at The IETF  . . . . . . . . . . . . . . . .  12
   3.  The RAW Framework . . . . . . . . . . . . . . . . . . . . . .  13
     3.1.  Scope and Prerequisites . . . . . . . . . . . . . . . . .  13
     3.2.  Routing Time Scale vs. Forwarding Time Scale  . . . . . .  14
     3.3.  Wireless Tracks . . . . . . . . . . . . . . . . . . . . .  15
     3.4.  PAREO Functions . . . . . . . . . . . . . . . . . . . . .  16
       3.4.1.  Packet Replication  . . . . . . . . . . . . . . . . .  17
       3.4.2.  Packet Elimination  . . . . . . . . . . . . . . . . .  18
       3.4.3.  Promiscuous Overhearing . . . . . . . . . . . . . . .  18
       3.4.4.  Constructive Interference . . . . . . . . . . . . . .  18
   4.  The RAW Architecture  . . . . . . . . . . . . . . . . . . . .  19
     4.1.  The RAW Conceptual Model  . . . . . . . . . . . . . . . .  19
     4.2.  The Path Selection Engine . . . . . . . . . . . . . . . .  21
     4.3.  RAW OAM . . . . . . . . . . . . . . . . . . . . . . . . .  22
     4.4.  Flow Identification vs. Path Identification . . . . . . .  23
     4.5.  Source-Routed vs. Distributed Forwarding Decision . . . .  26
     4.6.  Encapsulation and Decapsulation . . . . . . . . . . . . .  27
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  27
     5.1.  Forced Access . . . . . . . . . . . . . . . . . . . . . .  27
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