SCHC over Sigfox LPWAN
draft-ietf-lpwan-schc-over-sigfox-05

Document Type Active Internet-Draft (lpwan WG)
Authors Juan-Carlos Zúñiga  , Carles Gomez  , Sergio Aguilar  , Laurent Toutain  , Sandra Cespedes  , Diego S. Wistuba La Torre 
Last updated 2021-02-22
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lpwan Working Group                                           JC. Zuniga
Internet-Draft                                                    SIGFOX
Intended status: Informational                                  C. Gomez
Expires: August 26, 2021                                      S. Aguilar
                                    Universitat Politecnica de Catalunya
                                                              L. Toutain
                                                          IMT-Atlantique
                                                             S. Cespedes
                                                              D. Wistuba
                                          NIC Labs, Universidad de Chile
                                                       February 22, 2021

                         SCHC over Sigfox LPWAN
                  draft-ietf-lpwan-schc-over-sigfox-05

Abstract

   The Generic Framework for Static Context Header Compression and
   Fragmentation (SCHC) specification describes two mechanisms: i) an
   application header compression scheme, and ii) a frame fragmentation
   and loss recovery functionality.  SCHC offers a great level of
   flexibility that can be tailored for different Low Power Wide Area
   Network (LPWAN) technologies.

   The present document provides the optimal parameters and modes of
   operation when SCHC is implemented over a Sigfox LPWAN.  This set of
   parameters are also known as a "SCHC over Sigfox profile."

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 https://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."

   This Internet-Draft will expire on August 26, 2021.

Zuniga, et al.           Expires August 26, 2021                [Page 1]
Internet-Draft           SCHC over Sigfox LPWAN            February 2021

Copyright Notice

   Copyright (c) 2021 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  SCHC: Generic Framework for Static Context Header Compression
       and Fragmentation . . . . . . . . . . . . . . . . . . . . . .   3
   4.  SCHC over Sigfox  . . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  Network Architecture  . . . . . . . . . . . . . . . . . .   3
     4.2.  Uplink  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.3.  Downlink  . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.4.  SCHC-ACK on Downlink  . . . . . . . . . . . . . . . . . .   7
     4.5.  SCHC Rules  . . . . . . . . . . . . . . . . . . . . . . .   7
     4.6.  Fragmentation . . . . . . . . . . . . . . . . . . . . . .   7
       4.6.1.  Uplink Fragmentation  . . . . . . . . . . . . . . . .   8
       4.6.2.  Downlink Fragmentation  . . . . . . . . . . . . . . .  11
     4.7.  Padding . . . . . . . . . . . . . . . . . . . . . . . . .  12
   5.  Fragmentation Sequence Examples . . . . . . . . . . . . . . .  12
     5.1.  Uplink No-ACK Examples  . . . . . . . . . . . . . . . . .  12
     5.2.  Uplink ACK-on-Error Examples: Single-byte SCHC Header . .  13
     5.3.  SCHC Abort Examples . . . . . . . . . . . . . . . . . . .  19
   6.  Security considerations . . . . . . . . . . . . . . . . . . .  21
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  21
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  21
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  21
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  22
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  22

1.  Introduction

   The Generic Framework for Static Context Header Compression and
   Fragmentation (SCHC) specification [RFC8724] describes two
   mechanisms: i) an application header compression scheme, and ii) a
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