Inter-network Coexistence in the Internet of Things
draft-feeney-t2trg-inter-network-03

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Network Working Group                                          L. Feeney
Internet-Draft                                        Uppsala University
Intended status: Informational                                  V. Fodor
Expires: November 26, 2018                                           KTH
                                                            May 25, 2018

          Inter-network Coexistence in the Internet of Things
                  draft-feeney-t2trg-inter-network-03

Abstract

   The breadth of IoT applications implies that there will be many
   diverse, administratively independent networks operating in the same
   physical location.  In many cases, these networks will use unlicensed
   spectrum, due to its low cost and ease of deployment.  However, this
   spectrum is becoming increasingly crowded.  IoT networks will
   therefore be subject to wireless interference, both from similar
   networks and from networks that use the wireless channel in very
   different ways.

   High-density, heterogeneous wireless environments present formidable
   challenges for network coexistence.  The PHY and MAC layers are
   primarily responsible for managing how radios use the channel.  But
   higher layer protocols are also a key factor in inter-network
   interaction.  To date, there have been few performance studies of
   coexistence in future IoT operating environments, particularly with
   respect to protocol behavior and network-scale interactions.

   This document describes key challenges for coexistence and highlights
   some recent research results that demonstrate the impact of protocol
   level interactions on network performance.  It identifies both
   concrete and speculative opportunities for the IRTF T2TRG community.
   The former include developing and documenting best practices for
   performance evaluation and contributing IoT-related protocols being
   developed within IETF.  The latter include speculative research into
   the design of high-layer protocols that allow networks to actively
   coordinate their access to the shared channel.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

Feeney & Fodor          Expires November 26, 2018               [Page 1]
Internet-Draft          inter-network coexistence               May 2018

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on November 26, 2018.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  IoT interaction challenges  . . . . . . . . . . . . . . . . .   5
     2.1.  Scale . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Independence  . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  Resource limitations  . . . . . . . . . . . . . . . . . .   5
     2.4.  Diversity . . . . . . . . . . . . . . . . . . . . . . . .   6
       2.4.1.  Radio and PHY . . . . . . . . . . . . . . . . . . . .   6
       2.4.2.  Network structures  . . . . . . . . . . . . . . . . .   7
       2.4.3.  Protocols . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Interaction behaviors . . . . . . . . . . . . . . . . . . . .   9
     3.1.  WiFi  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     3.2.  IEEE 802.15.4 . . . . . . . . . . . . . . . . . . . . . .  10
     3.3.  Recent results in IoT networks  . . . . . . . . . . . . .  10
     3.4.  Higher layer protocols  . . . . . . . . . . . . . . . . .  11
   4.  Network coexistence in the IRTF/IETF context  . . . . . . . .  11
     4.1.  Performance evaluation and protocol design  . . . . . . .  12
     4.2.  Adaptive mitigation strategies  . . . . . . . . . . . . .  13
     4.3.  Active mitigation strategies  . . . . . . . . . . . . . .  14
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