IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Dispatch Type for SCHC
draft-gomez-6lo-schc-dispatch-01
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Carles Gomez
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2020-09-21
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6lo Working Group C. Gomez
Internet-Draft UPC
Intended status: Standards Track September 21, 2020
Expires: March 25, 2021
IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Dispatch
Type for SCHC
draft-gomez-6lo-schc-dispatch-01
Abstract
A new framework called Static Context Header Compression (SCHC) has
been designed with the primary goal of supporting 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. This document defines a 6LoWPAN Dispatch
Type to signal when a packet header has been compressed by using SCHC
header compression.
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
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Drafts is at https://datatracker.ietf.org/drafts/current/.
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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 March 25, 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 March 25, 2021 [Page 1]
Internet-Draft 6LoWPAN Dispatch Type for SCHC September 2020
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions used in this document . . . . . . . . . . . . . . 3
3. Frame Format . . . . . . . . . . . . . . . . . . . . . . . . 3
4. SCHC Dispatch Type . . . . . . . . . . . . . . . . . . . . . 3
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
6. Security Considerations . . . . . . . . . . . . . . . . . . . 4
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 4
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
8.1. Normative References . . . . . . . . . . . . . . . . . . 4
8.2. Informative References . . . . . . . . . . . . . . . . . 5
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 5
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 cases, RFC 6282 allows to compress a 40-byte IPv6 header
down to a 2-byte compressed header (for 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 6-byte
format (when using link-local addresses) or a 7-byte format (for
global interactions) by using RFC 6282.
Recently, a new framework called Static Context Header Compression
(SCHC) has been designed with the primary goal of supporting IPv6
over Low Power Wide Area Network (LPWAN) technologies [RFC8724].
SCHC comprises header compression and fragmentation functionality
tailored to the extraordinary constraints of LPWAN technologies,
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