Static Context Header Compression (SCHC) Architecture
draft-pelov-lpwan-architecture-00
lpwan Working Group A. Pelov
Internet-Draft Acklio
Intended status: Standards Track P. Thubert
Expires: July 23, 2021 Cisco Systems
A. Minaburo
Acklio
January 19, 2021
Static Context Header Compression (SCHC) Architecture
draft-pelov-lpwan-architecture-00
Abstract
This document defines the SCHC architecture.
Status of This Memo
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Internet-Draft SCHC Architecture January 2021
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Global architecture . . . . . . . . . . . . . . . . . . . . . 3
4. Data management . . . . . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 5
6. Normative References . . . . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6
1. Introduction
The base operation and the definition of the SCHC compression &
Fragmentation are now described in several documents published by the
LPWAN working group.
Among them:
o The [rfc8724] defines the generic compression and fragmentation
mechanisms for SCHC and applies it to IPv6 and UDP.
o The [I-D.ietf-lpwan-coap-static-context-hc] extend the compression
to CoAP and OSCORE.
o The [I-D.ietf-lpwan-schc-yang-data-model] defines a rule
representation using the YANG formalism.
As [I-D.ietf-lpwan-coap-static-context-hc] states, the SCHC
compression and fragmentation mechanism can be implemented at
different levels and/or managed by different organizations. For
instance, as represented figure Figure 1, IP compression and
fragmentation may be managed by the network SCHC instance and end-to-
end compression between the device and the application. The former
can itself be split in two instances since encryption hides the field
structure.
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Internet-Draft SCHC Architecture January 2021
(device) (NGW) (App)
+--------+ +--------+
A S | CoAP | | CoAP |
p C | inner | | inner |
p H +--------+ +--------+
. V | SCHC | | SCHC |
| inner | cryptographical boundary | inner |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A S | CoAP | | CoAP |
p C | outer | | outer |
p H +--------+ +--------+
. C | SCHC | | SCHC |
| outer | functional boundary | outer |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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