Using IEEE802.15.4e TSCH in an LLN context: Overview, Problem Statement and Goals
draft-ietf-6tisch-tsch-01

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Document Type Active Internet-Draft (6tisch WG)
Authors Thomas Watteyne  , Maria Palattella  , Luigi Grieco 
Last updated 2014-07-04
Replaces draft-watteyne-6tisch-tsch
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6TiSCH                                                  T. Watteyne, Ed.
Internet-Draft                                         Linear Technology
Intended status: Informational                            MR. Palattella
Expires: January 5, 2015                        University of Luxembourg
                                                              LA. Grieco
                                                     Politecnico di Bari
                                                            July 4, 2014

              Using IEEE802.15.4e TSCH in an LLN context:
                 Overview, Problem Statement and Goals
                       draft-ietf-6tisch-tsch-01

Abstract

   This document describes the environment, problem statement, and goals
   for using the IEEE802.15.4e TSCH MAC protocol in the context of LLNs.
   The set of goals enumerated in this document form an initial set
   only.

Status of This Memo

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   This Internet-Draft will expire on January 5, 2015.

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   Copyright (c) 2014 IETF Trust and the persons identified as the
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Watteyne, et al.         Expires January 5, 2015                [Page 1]
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  TSCH in the LLN Context . . . . . . . . . . . . . . . . . . .   4
   3.  Problems and Goals  . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Network Formation . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Network Maintenance . . . . . . . . . . . . . . . . . . .   6
     3.3.  Multi-Hop Topology  . . . . . . . . . . . . . . . . . . .   7
     3.4.  Routing and Timing Parents  . . . . . . . . . . . . . . .   7
     3.5.  Resource Management . . . . . . . . . . . . . . . . . . .   7
     3.6.  Dataflow Control  . . . . . . . . . . . . . . . . . . . .   8
     3.7.  Deterministic Behavior  . . . . . . . . . . . . . . . . .   8
     3.8.  Scheduling Mechanisms . . . . . . . . . . . . . . . . . .   8
     3.9.  Secure Communication  . . . . . . . . . . . . . . . . . .   9
   4.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     5.2.  Informative References  . . . . . . . . . . . . . . . . .   9
     5.3.  External Informative References . . . . . . . . . . . . .  12
   Appendix A.  TSCH Protocol Highlights . . . . . . . . . . . . . .  15
     A.1.  Timeslots . . . . . . . . . . . . . . . . . . . . . . . .  15
     A.2.  Slotframes  . . . . . . . . . . . . . . . . . . . . . . .  15
     A.3.  Node TSCH Schedule  . . . . . . . . . . . . . . . . . . .  15
     A.4.  Cells and Bundles . . . . . . . . . . . . . . . . . . . .  16
     A.5.  Dedicated vs. Shared Cells  . . . . . . . . . . . . . . .  16
     A.6.  Absolute Slot Number  . . . . . . . . . . . . . . . . . .  17
     A.7.  Channel Hopping . . . . . . . . . . . . . . . . . . . . .  17
     A.8.  Time Synchronization  . . . . . . . . . . . . . . . . . .  18
     A.9.  Power Consumption . . . . . . . . . . . . . . . . . . . .  18
     A.10. Network TSCH Schedule . . . . . . . . . . . . . . . . . .  19
     A.11. Join Process  . . . . . . . . . . . . . . . . . . . . . .  19
     A.12. Information Elements  . . . . . . . . . . . . . . . . . .  19
     A.13. Extensibility . . . . . . . . . . . . . . . . . . . . . .  20
   Appendix B.  TSCH Gotchas . . . . . . . . . . . . . . . . . . . .  20
     B.1.  Collision Free Communication  . . . . . . . . . . . . . .  20
     B.2.  Multi-Channel vs. Channel Hopping . . . . . . . . . . . .  20
     B.3.  Cost of (continuous) Synchronization  . . . . . . . . . .  20
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