Static Context Header Compression (SCHC) over LoRaWAN
draft-ietf-lpwan-schc-over-lorawan-13
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Active Internet-Draft (lpwan WG)
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Authors |
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Olivier Gimenez
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Ivaylo Petrov
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Last updated |
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2020-11-05
(latest revision 2020-10-30)
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Replaces |
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draft-petrov-lpwan-ipv6-schc-over-lorawan
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Stream |
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IETF
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Intended RFC status |
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Proposed Standard
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plain text
pdf
htmlized (tools)
htmlized
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Dominique Barthel
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Shepherd write-up |
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Show
(last changed 2020-10-06)
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| IESG |
IESG state |
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Approved-announcement to be sent::Revised I-D Needed
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Éric Vyncke
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IESG note |
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AD has checked with authors whether the Lora Alliance has reviewed this document: yes, review done.
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Send notices to |
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Dominique Barthel <dominique.barthel@orange.com>
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| IANA |
IANA review state |
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IANA OK - No Actions Needed
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lpwan Working Group O. Gimenez, Ed.
Internet-Draft Semtech
Intended status: Standards Track I. Petrov, Ed.
Expires: May 3, 2021 Acklio
October 30, 2020
Static Context Header Compression (SCHC) over LoRaWAN
draft-ietf-lpwan-schc-over-lorawan-13
Abstract
The Static Context Header Compression (SCHC) specification describes
generic header compression and fragmentation techniques for Low Power
Wide Area Networks (LPWAN) technologies. SCHC is a generic mechanism
designed for great flexibility so that it can be adapted for any of
the LPWAN technologies.
This document specifies a profile of RFC8724 to use SCHC in LoRaWAN
networks, and provides elements such as efficient parameterization
and modes of operation.
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 May 3, 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
publication of this document. Please review these documents
Gimenez & Petrov Expires May 3, 2021 [Page 1]
Internet-Draft SCHC-over-LoRaWAN October 2020
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Static Context Header Compression Overview . . . . . . . . . 4
4. LoRaWAN Architecture . . . . . . . . . . . . . . . . . . . . 6
4.1. Device classes (A, B, C) and interactions . . . . . . . . 7
4.2. Device addressing . . . . . . . . . . . . . . . . . . . . 8
4.3. General Frame Types . . . . . . . . . . . . . . . . . . . 8
4.4. LoRaWAN MAC Frames . . . . . . . . . . . . . . . . . . . 9
4.5. LoRaWAN FPort . . . . . . . . . . . . . . . . . . . . . . 9
4.6. LoRaWAN empty frame . . . . . . . . . . . . . . . . . . . 9
4.7. Unicast and multicast technology . . . . . . . . . . . . 9
5. SCHC-over-LoRaWAN . . . . . . . . . . . . . . . . . . . . . . 10
5.1. LoRaWAN FPort and RuleID . . . . . . . . . . . . . . . . 10
5.2. Rule ID management . . . . . . . . . . . . . . . . . . . 10
5.3. Interface IDentifier (IID) computation . . . . . . . . . 11
5.4. Padding . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.5. Decompression . . . . . . . . . . . . . . . . . . . . . . 12
5.6. Fragmentation . . . . . . . . . . . . . . . . . . . . . . 12
5.6.1. DTag . . . . . . . . . . . . . . . . . . . . . . . . 13
5.6.2. Uplink fragmentation: From device to SCHC gateway . . 13
5.6.3. Downlink fragmentation: From SCHC gateway to device . 16
5.7. SCHC Fragment Format . . . . . . . . . . . . . . . . . . 20
5.7.1. All-0 SCHC fragment . . . . . . . . . . . . . . . . . 20
5.7.2. All-1 SCHC fragment . . . . . . . . . . . . . . . . . 21
5.7.3. Delay after each LoRaWAN frame to respect local
regulation . . . . . . . . . . . . . . . . . . . . . 21
6. Security Considerations . . . . . . . . . . . . . . . . . . . 21
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 21
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 21
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 22
10.1. Normative References . . . . . . . . . . . . . . . . . . 22
10.2. Informative References . . . . . . . . . . . . . . . . . 23
Appendix A. Examples . . . . . . . . . . . . . . . . . . . . . . 23
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