Static Context Header Compression (SCHC) over LoRaWAN
draft-ietf-lpwan-schc-over-lorawan-10
| Document | Type | Active Internet-Draft (lpwan WG) | |
|---|---|---|---|
| Last updated | 2020-09-18 | ||
| Replaces | draft-petrov-lpwan-ipv6-schc-over-lorawan | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Dominique Barthel | ||
| Shepherd write-up | Show (last changed 2020-08-01) | ||
| IESG | IESG state | In Last Call (ends 2020-10-02) | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Needs 9 more YES or NO OBJECTION positions to pass. |
||
| Responsible AD | Éric Vyncke | ||
| IESG note | AD has checked with authors whether the Lora Alliance has reviewed this document: yes, review done. | ||
| Send notices to | Dominique Barthel <dominique.barthel@orange.com> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
lpwan Working Group O. Gimenez, Ed.
Internet-Draft Semtech
Intended status: Standards Track I. Petrov, Ed.
Expires: March 22, 2021 Acklio
September 18, 2020
Static Context Header Compression (SCHC) over LoRaWAN
draft-ietf-lpwan-schc-over-lorawan-10
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 provides the adaptation of SCHC for use in LoRaWAN
networks, and provides elements such as efficient parameterization
and modes of operation. This is called a profile.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on March 22, 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
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publication of this document. Please review these documents
Gimenez & Petrov Expires March 22, 2021 [Page 1]
Internet-Draft SCHC-over-LoRaWAN September 2020
carefully, as they describe your rights and restrictions with respect
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Static Context Header Compression Overview . . . . . . . . . 4
4. LoRaWAN Architecture . . . . . . . . . . . . . . . . . . . . 5
4.1. Device classes (A, B, C) and interactions . . . . . . . . 6
4.2. Device addressing . . . . . . . . . . . . . . . . . . . . 7
4.3. General Frame Types . . . . . . . . . . . . . . . . . . . 8
4.4. LoRaWAN MAC Frames . . . . . . . . . . . . . . . . . . . 8
4.5. LoRaWAN FPort . . . . . . . . . . . . . . . . . . . . . . 8
4.6. LoRaWAN empty frame . . . . . . . . . . . . . . . . . . . 9
4.7. Unicast and multicast technology . . . . . . . . . . . . 9
5. SCHC-over-LoRaWAN . . . . . . . . . . . . . . . . . . . . . . 9
5.1. LoRaWAN FPort and RuleID . . . . . . . . . . . . . . . . 9
5.2. Rule ID management . . . . . . . . . . . . . . . . . . . 10
5.3. Interface IDentifier (IID) computation . . . . . . . . . 11
5.4. Padding . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.5. Decompression . . . . . . . . . . . . . . . . . . . . . . 12
5.6. Fragmentation . . . . . . . . . . . . . . . . . . . . . . 12
5.6.1. DTag . . . . . . . . . . . . . . . . . . . . . . . . 12
5.6.2. Uplink fragmentation: From device to SCHC gateway . . 12
5.6.3. Downlink fragmentation: From SCHC gateway to device . 15
5.7. SCHC Fragment Format . . . . . . . . . . . . . . . . . . 19
5.7.1. All-0 SCHC fragment . . . . . . . . . . . . . . . . . 19
5.7.2. All-1 SCHC fragment . . . . . . . . . . . . . . . . . 19
5.7.3. Delay after each message to respect local regulation 19
6. Security considerations . . . . . . . . . . . . . . . . . . . 19
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 19
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 20
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 20
10.1. Normative References . . . . . . . . . . . . . . . . . . 20
10.2. Informative References . . . . . . . . . . . . . . . . . 21
Appendix A. Examples . . . . . . . . . . . . . . . . . . . . . . 21
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