Extensions to enable wireless reliability and availability in multi- access edge deployments
draft-bernardos-raw-mec-00

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RAW WG                                                     CJ. Bernardos
Internet-Draft                                                      UC3M
Intended status: Standards Track                               A. Mourad
Expires: January 28, 2021                                   InterDigital
                                                           July 27, 2020

  Extensions to enable wireless reliability and availability in multi-
                        access edge deployments
                       draft-bernardos-raw-mec-00

Abstract

   There are several scenarios involving multi-hop heterogeneous
   wireless networks requiring reliable and available features combined
   with multi-access edge computing, such as Industry 4.0.  This
   document describes solutions integrating IETF RAW and ETSI MEC,
   fostering discussion about extensions at both IETF and ETSI MEC to
   better support these scenarios.

Status of This Memo

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   This Internet-Draft will expire on January 28, 2021.

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

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Bernardos & Mourad      Expires January 28, 2021                [Page 1]
Internet-Draft           RAW and MEC integration               July 2020

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   5
   4.  RAW and MEC integration . . . . . . . . . . . . . . . . . . .   7
     4.1.  MEC app request for RAW . . . . . . . . . . . . . . . . .   8
     4.2.  RAW OAM triggering MEC app migration  . . . . . . . . . .  11
     4.3.  MEC OAM for RAW updates . . . . . . . . . . . . . . . . .  13
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  15
   8.  Informative References  . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   Wireless operates on a shared medium, and transmissions cannot be
   fully deterministic due to uncontrolled interferences, including
   self-induced multipath fading.  RAW (Reliable and Available Wireless)
   is an effort to provide Deterministic Networking on across a path
   that include a wireless interface.  RAW provides for high reliability
   and availability for IP connectivity over a wireless medium.  The
   wireless medium presents significant challenges to achieve
   deterministic properties such as low packet error rate, bounded
   consecutive losses, and bounded latency.  RAW extends the DetNet
   Working Group concepts to provide for high reliability and
   availability for an IP network utilizing scheduled wireless segments
   and other media, e.g., frequency/time-sharing physical media
   resources with stochastic traffic: IEEE Std. 802.15.4 timeslotted
   channel hopping (TSCH), 3GPP 5G ultra-reliable low latency
   communications (URLLC), IEEE 802.11ax/be, and L-band Digital
   Aeronautical Communications System (LDACS), etc.  Similar to DetNet,
   RAW technologies aim at staying abstract to the radio layers
   underneath, addressing the Layer 3 aspects in support of applications
   requiring high reliability and availability.

   As introduced in [I-D.pthubert-raw-architecture], RAW separates the
   path computation time scale at which a complex path is recomputed
   from the path selection time scale at which the forwarding decision
   is taken for one or a few packets.  RAW operates at the path
   selection time scale.  The RAW problem is to decide, amongst the