An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
draft-ietf-6tisch-architecture-05

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Document Type Active Internet-Draft (6tisch WG)
Last updated 2015-01-27
Replaces draft-thubert-6tisch-architecture
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6TiSCH                                                   P. Thubert, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                             T. Watteyne
Expires: July 31, 2015                                 Linear Technology
                                                               R. Struik
                                             Struik Security Consultancy
                                                           M. Richardson
                                                                     SSW
                                                        January 27, 2015

     An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
                   draft-ietf-6tisch-architecture-05

Abstract

   This document presents an architecture for an IPv6 Multi-Link subnet
   that is composed of a high speed powered backbone and a number of
   IEEE802.15.4e TSCH wireless networks attached and synchronized by
   Backbone Routers.  The TSCH schedule can be static or dynamic.
   6TiSCH defines mechanisms to establish and maintain the routing and
   scheduling operations in a centralized, distributed, or mixed
   fashion.  Backbone Routers perform proxy Neighbor Discovery
   operations over the backbone on behalf of the wireless devices, so
   they can share a same subnet and appear to be connected to the same
   backbone as classical devices.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in RFC
   2119 [RFC2119].

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 http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

Thubert, et al.           Expires July 31, 2015                 [Page 1]
Internet-Draft             6TiSCH-architecture              January 2015

   This Internet-Draft will expire on July 31, 2015.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Applications and Goals  . . . . . . . . . . . . . . . . . . .   5
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Components  . . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Dependencies  . . . . . . . . . . . . . . . . . . . . . .  10
   6.  6LoWPAN (and RPL) . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  RPL Leaf Support in 6LoWPAN ND  . . . . . . . . . . . . .  11
     6.2.  registration Failures Due to Movement . . . . . . . . . .  12
     6.3.  Proxy registration  . . . . . . . . . . . . . . . . . . .  12
     6.4.  Target Registration . . . . . . . . . . . . . . . . . . .  13
     6.5.  RPL root vs. 6LBR . . . . . . . . . . . . . . . . . . . .  13
     6.6.  Securing the Registration . . . . . . . . . . . . . . . .  14
   7.  Communication Paradigms and Interaction Models  . . . . . . .  15
   8.  TSCH and 6top . . . . . . . . . . . . . . . . . . . . . . . .  15
     8.1.  6top  . . . . . . . . . . . . . . . . . . . . . . . . . .  15
     8.2.  6top and RPL Objective Function operations  . . . . . . .  16
     8.3.  Network Synchronization . . . . . . . . . . . . . . . . .  17
     8.4.  SlotFrames and Priorities . . . . . . . . . . . . . . . .  18
     8.5.  Distributing the reservation of cells . . . . . . . . . .  20
   9.  Schedule Management Mechanisms  . . . . . . . . . . . . . . .  21
     9.1.  Minimal Static Scheduling . . . . . . . . . . . . . . . .  21
     9.2.  Neighbor-to-neighbor Scheduling . . . . . . . . . . . . .  22
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