6top Protocol (6P)
draft-ietf-6tisch-6top-protocol-07

Document Type Active Internet-Draft (6tisch WG)
Last updated 2017-06-27
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6TiSCH                                                      Q. Wang, Ed.
Internet-Draft                           Univ. of Sci. and Tech. Beijing
Intended status: Standards Track                           X. Vilajosana
Expires: December 29, 2017               Universitat Oberta de Catalunya
                                                             T. Watteyne
                                                          Analog Devices
                                                           June 27, 2017

                           6top Protocol (6P)
                   draft-ietf-6tisch-6top-protocol-07

Abstract

   This document defines the 6top Protocol (6P), which enables
   distributed scheduling in 6TiSCH networks.  6P allows neighbor nodes
   to add/delete TSCH cells to one another.  6P is part of the 6TiSCH
   Operation Sublayer (6top), the next higher layer to the IEEE Std
   802.15.4 TSCH medium access control layer.  The 6top Scheduling
   Function (SF) decides when to add/delete cells, and triggers 6P
   Transactions.  Several SFs can be defined, each identified by a
   different 6top Scheduling Function Identifier (SFID).  This document
   lists the requirements for an SF, but leaves the definition of the SF
   out of scope.  SFs are expected to be defined in future companion
   specifications.

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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   Internet-Drafts are draft documents valid for a maximum of six months
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   material or to cite them other than as "work in progress."

Wang, et al.            Expires December 29, 2017               [Page 1]
Internet-Draft            6tisch-6top-protocol                 June 2017

   This Internet-Draft will expire on December 29, 2017.

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Table of Contents

   1.  TEMPORARY EDITORIAL NOTES . . . . . . . . . . . . . . . . . .   3
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  6TiSCH Operation Sublayer (6top)  . . . . . . . . . . . . . .   5
     3.1.  Hard/Soft Cells . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Using 6P with the Minimal 6TiSCH Configuration  . . . . .   6
   4.  6top Protocol (6P)  . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  6P Transactions . . . . . . . . . . . . . . . . . . . . .   7
       4.1.1.  2-step 6P Transaction . . . . . . . . . . . . . . . .   7
       4.1.2.  3-step 6P Transaction . . . . . . . . . . . . . . . .   8
     4.2.  Message Format  . . . . . . . . . . . . . . . . . . . . .  10
       4.2.1.  6top Information Element (IE) . . . . . . . . . . . .  10
       4.2.2.  Generic 6P Message Format . . . . . . . . . . . . . .  10
       4.2.3.  6P CellOptions  . . . . . . . . . . . . . . . . . . .  11
       4.2.4.  6P CellList . . . . . . . . . . . . . . . . . . . . .  12
     4.3.  6P Commands and Operations  . . . . . . . . . . . . . . .  13
       4.3.1.  Adding Cells  . . . . . . . . . . . . . . . . . . . .  13
       4.3.2.  Deleting Cells  . . . . . . . . . . . . . . . . . . .  14
       4.3.3.  Relocating Cells  . . . . . . . . . . . . . . . . . .  16
       4.3.4.  Counting Cells  . . . . . . . . . . . . . . . . . . .  18
       4.3.5.  Listing Cells . . . . . . . . . . . . . . . . . . . .  19
       4.3.6.  Clearing the Schedule . . . . . . . . . . . . . . . .  20
     4.4.  Protocol Functional Details . . . . . . . . . . . . . . .  21
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