IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Dispatch Type for SCHC
draft-gomez-6lo-schc-dispatch-00

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6lo Working Group                                               C. Gomez
Internet-Draft                                                       UPC
Intended status: Experimental                              July 13, 2020
Expires: January 14, 2021

 IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Dispatch
                             Type for SCHC
                    draft-gomez-6lo-schc-dispatch-00

Abstract

   A new framework called Static Context Header Compression (SCHC) has
   been designed to support IPv6 over Low Power Wide Area Network
   (LPWAN) technologies [RFC8724].  One of the SCHC components is a
   header compression mechanism.  If used properly, SCHC header
   compression allows a greater compression ratio than that achievable
   with traditional 6LoWPAN header compression [RFC6282].  For this
   reason, it may make sense to use SCHC header compression in some
   6LoWPAN environments.  In its current form, this document proposes a
   number of 6LoWPAN Dispatch type approaches to signal when a packet
   header has been compressed by using SCHC header compression.

Status of This Memo

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   This Internet-Draft will expire on January 14, 2021.

Copyright Notice

   Copyright (c) 2020 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
   (https://trustee.ietf.org/license-info) in effect on the date of

Gomez                   Expires January 14, 2021                [Page 1]
Internet-Draft       6LoWPAN Dispatch Type for SCHC            July 2020

   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   3
   3.  Frame Format  . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  SCHC Dispatch Type Approaches . . . . . . . . . . . . . . . .   3
     4.1.  Approach 1  . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Approach 2  . . . . . . . . . . . . . . . . . . . . . . .   4
     4.3.  Approach 3  . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   5
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   RFC 6282 is the main specification for IPv6 over Low power Wireless
   Personal Area Network (6LoWPAN) IPv6 header compression [RFC6282].
   This RFC was designed assuming IEEE 802.15.4 as the layer below the
   6LoWPAN adaptation layer, and it has also been reused (with proper
   adaptations) for IPv6 header compression over many other technologies
   relatively similar to IEEE 802.15.4 in terms of characteristics such
   as physical layer bit rate, layer 2 maximum payload size, etc.
   Examples of such technologies comprise BLE, DECT-ULE, ITU G.9959, MS/
   TP, NFC, and PLC.  RFC 6282 provides additional functionality, such
   as a mechanism for UDP header compression.

   In the best case, RFC 6282 allows to compress a 40-byte IPv6 header
   down to a 2-byte compressed header (in link-local interactions) or a
   3-byte compressed header (when global IPv6 addresses are used).  On
   the other hand, an RFC 6282 compressed UDP header has a typical size
   of 4 bytes.  Therefore, in advantageous conditions, a 48-byte
   uncompressed IPv6/UDP header may be compressed down to a 7-byte
   format by using RFC 6282.

   Recently, a new framework called Static Context Header Compression
   (SCHC) has been designed to support IPv6 over Low Power Wide Area