An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
draft-ietf-6tisch-architecture-04

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Document Type Active Internet-Draft (6tisch WG)
Last updated 2014-10-27
Replaces draft-thubert-6tisch-architecture
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6TiSCH                                                   P. Thubert, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                             T. Watteyne
Expires: April 28, 2015                                Linear Technology
                                                            RA. Assimiti
                                                                 Centero
                                                        October 27, 2014

     An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
                   draft-ietf-6tisch-architecture-04

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
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 28, 2015.

Copyright Notice

Thubert, Watteyne & AssimExpires April 28, 2015                 [Page 1]
Internet-Draft            6TiSCH-architecture               October 2014

   Copyright (c) 2014 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 to this document.  Code Components
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   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Applications and Goals . . . . . . . . . . . . . . . . . . . .  4
   4.  Overview and Scope . . . . . . . . . . . . . . . . . . . . . .  5
   5.  6LoWPAN (and RPL)  . . . . . . . . . . . . . . . . . . . . . .  8
     5.1.  RPL Leaf Support in 6LoWPAN ND . . . . . . . . . . . . . .  9
     5.2.  registration Failures Due to Movement  . . . . . . . . . .  9
     5.3.  Proxy registration . . . . . . . . . . . . . . . . . . . .  9
     5.4.  Target Registration  . . . . . . . . . . . . . . . . . . . 10
     5.5.  RPL root vs. 6LBR  . . . . . . . . . . . . . . . . . . . . 10
     5.6.  Securing the Registration  . . . . . . . . . . . . . . . . 11
   6.  Communication Paradigms and Interaction Models . . . . . . . . 11
   7.  TSCH and 6top  . . . . . . . . . . . . . . . . . . . . . . . . 12
     7.1.  6top . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     7.2.  6top and RPL Objective Function operations . . . . . . . . 13
     7.3.  Network Synchronization  . . . . . . . . . . . . . . . . . 14
     7.4.  SlotFrames and Priorities  . . . . . . . . . . . . . . . . 15
     7.5.  Distributing the reservation of cells  . . . . . . . . . . 16
   8.  Schedule Management Mechanisms . . . . . . . . . . . . . . . . 18
     8.1.  Minimal Static Scheduling  . . . . . . . . . . . . . . . . 18
     8.2.  Neighbor-to-neighbor Scheduling  . . . . . . . . . . . . . 19
     8.3.  Remote Monitoring and Schedule Management  . . . . . . . . 19
     8.4.  Hop-by-hop Scheduling  . . . . . . . . . . . . . . . . . . 20
   9.  Forwarding Models  . . . . . . . . . . . . . . . . . . . . . . 20
     9.1.  Track Forwarding . . . . . . . . . . . . . . . . . . . . . 21
       9.1.1.  Transport Mode . . . . . . . . . . . . . . . . . . . . 22
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