6TiSCH Operation Sublayer (6top)
draft-wang-6tisch-6top-sublayer-03

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6TiSCH                                                      Q. Wang, Ed.
Internet-Draft                           Univ. of Sci. and Tech. Beijing
Intended status: Informational                             X. Vilajosana
Expires: April 21, 2016                  Universitat Oberta de Catalunya
                                                        October 19, 2015

                    6TiSCH Operation Sublayer (6top)
                   draft-wang-6tisch-6top-sublayer-03

Abstract

   This document defines the 6TiSCH Operation Sublayer (6top), which
   offers mechanisms for distributed scheduling in 6TiSCH networks.  The
   6top sublayer is the next higher layer of the IEEE802.15.4e TSCH
   medium access control layer.  The 6top Protocol (6P) defined in this
   document allows neighbor nodes to add/delete TSCH cells to one
   another.  To be able to match different application requirements, the
   6top Scheduling Function (SF) decides when to add/delete cells.  The
   SF is left out of scope, and will be specified in one or more
   companion documents.

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.

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   This Internet-Draft will expire on April 21, 2016.

Wang & Vilajosana        Expires April 21, 2016                 [Page 1]
Internet-Draft            6tisch-6top-sublayer              October 2015

Copyright Notice

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

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  6TiSCH Operation Sublayer (6top)  . . . . . . . . . . . . . .   4
     2.1.  Hard/Soft Cells . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Using 6top with the Minimal 6TiSCH Configuration  . . . .   5
   3.  6top Protocol (6P)  . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Message Format  . . . . . . . . . . . . . . . . . . . . .   6
       3.1.1.  6top Information Element  . . . . . . . . . . . . . .   6
       3.1.2.  General Message Format  . . . . . . . . . . . . . . .   7
       3.1.3.  6P Command Identifiers  . . . . . . . . . . . . . . .   7
       3.1.4.  6P Return Codes . . . . . . . . . . . . . . . . . . .   8
       3.1.5.  6P Cell Format  . . . . . . . . . . . . . . . . . . .   8
       3.1.6.  6P ADD Request Format . . . . . . . . . . . . . . . .   8
       3.1.7.  6P DELETE Request Format  . . . . . . . . . . . . . .   9
       3.1.8.  6P COUNT Request Format . . . . . . . . . . . . . . .   9
       3.1.9.  6P LIST Request Format  . . . . . . . . . . . . . . .   9
       3.1.10. 6P CLEAR Request Format . . . . . . . . . . . . . . .   9
       3.1.11. 6P Response Format  . . . . . . . . . . . . . . . . .  10
     3.2.  Protocol Behavior . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  Version Checking  . . . . . . . . . . . . . . . . . .  10
       3.2.2.  SFID Checking . . . . . . . . . . . . . . . . . . . .  10
       3.2.3.  Concurrent 6P Transactions  . . . . . . . . . . . . .  11
       3.2.4.  Timeout . . . . . . . . . . . . . . . . . . . . . . .  11
       3.2.5.  Adding cells  . . . . . . . . . . . . . . . . . . . .  11
       3.2.6.  Aborting a 6P Transaction . . . . . . . . . . . . . .  12
       3.2.7.  Deleting cells  . . . . . . . . . . . . . . . . . . .  12
       3.2.8.  Handling error responses  . . . . . . . . . . . . . .  12
     3.3.  Security  . . . . . . . . . . . . . . . . . . . . . . . .  13
   4.  Guidelines for 6top Scheduling Functions (SF) . . . . . . . .  13
     4.1.  SF Identifier (SFID)  . . . . . . . . . . . . . . . . . .  13
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