SCHC for 802.15.4 lpwan applications
draft-authors-lpwan-schc-802154-00

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Internet Area                                                  J. Robert
Internet-Draft                                    FAU Erlangen-Nuernberg
Intended status: Standards Track                              C. Perkins
Expires: January 17, 2019                                      Futurewei
                                                           July 16, 2018

                  SCHC for 802.15.4 lpwan applications
                   draft-authors-lpwan-schc-802154-00

Abstract

   This document provides guidelines for creating Rules for Static
   Context Header Compression for IEEE 802.15.4.  Since 802.15.4
   provides layer-2 acknowledgements, some complexities that were
   designed for more general systems can be avoided.

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Robert & Perkins        Expires January 17, 2019                [Page 1]
Internet-Draft              SCHC for 802.15.4                  July 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  SCHC parameters . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Size of the Rule ID . . . . . . . . . . . . . . . . . . .   4
     3.2.  Use of Padding  . . . . . . . . . . . . . . . . . . . . .   4
     3.3.  Fragmentation Delivery Reliability Option . . . . . . . .   4
     3.4.  MAX_ACK_REQUEST . . . . . . . . . . . . . . . . . . . . .   4
     3.5.  FCN . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.6.  DTag  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.7.  L2 CRC  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.8.  Fragmentation ACK Parameters (not used) . . . . . . . . .   5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   Static Context Header Compression (SCHC)
   [I-D.ietf-lpwan-ipv6-static-context-hc] is a solution for header
   compression, highly specialized for very predictable IPv6 packets to
   and from an lpwan node with significant resource constraints
   (especially power).  This document provides guidelines for creating
   Rules for Static Context Header Compression (SCHC) for IEEE 802.15.4
   [dot4].  Since 802.15.4 provides layer-2 acknowledgements, some
   complexities that were designed for more general systems can be
   avoided.

   The Low-Power, Wide-Area IEEE 802.15.4w task group (LPWA) has been
   chartered to specify modifications to 802.15.4 MAC and PHY parameters
   that would be needed to make the technology more suitable for lpwan
   applications [lpwa_par], [lpwa_csd].  Although 801.15.4g [dot4g] and
   802.15.4k [dot4k] were previously designed for such systems, recent
   experiments and further experience with new use cases have indicated
   the need for additional specification and wider applicability.

   LPWA has listed different use-cases that may be relevant for LPWAN in
   a study group document [lpwa_use_cases].  The LPWAN use-cases
   discussed in that document are characterized as follows:
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