Data Model for Static Context Header Compression (SCHC)
draft-ietf-lpwan-schc-yang-data-model-00
Network Working Group A. Minaburo
Internet-Draft Acklio
Intended status: Informational L. Toutain
Expires: October 23, 2019 Institut MINES TELECOM ; IMT Atlantique
April 21, 2019
Data Model for Static Context Header Compression (SCHC)
draft-ietf-lpwan-schc-yang-data-model-00
Abstract
This document describes a YANG data model for the SCHC (Static
Context Header Compression). A generic module is defined, that can
be applied for any headers and also a specific model for the IPv6 UDP
protocol stack is also proposed. Note that this draft is a first
attempt to define a YANG data module for SCHC, more work is needed to
use all the YANG facilities.
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This Internet-Draft will expire on October 23, 2019.
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Internet-Draft LPWAN SCHC YANG module April 2019
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1. Introduction
SCHC [I-D.ietf-lpwan-ipv6-static-context-hc] defines a compression
technique for LPWAN networks based on static context. The context
contains a list of rules (cf. Figure 1). Each rule contains itself
a list of field descriptions composed of a field identifier (FID), a
field length (FID), a field position (FP), a field direction (DI), a
target value (TV), a matching operator (MO) and a Compression/
Decompression Action (CDA).
+-----------------------------------------------------------------+
| Rule N |
+-----------------------------------------------------------------+|
| Rule i ||
+-----------------------------------------------------------------+||
| (FID) Rule 1 |||
|+-------+--+--+--+------------+-----------------+---------------+|||
||Field 1|FL|FP|DI|Target Value|Matching Operator|Comp/Decomp Act||||
|+-------+--+--+--+------------+-----------------+---------------+|||
||Field 2|FL|FP|DI|Target Value|Matching Operator|Comp/Decomp Act||||
|+-------+--+--+--+------------+-----------------+---------------+|||
||... |..|..|..| ... | ... | ... ||||
|+-------+--+--+--+------------+-----------------+---------------+||/
||Field N|FL|FP|DI|Target Value|Matching Operator|Comp/Decomp Act|||
|+-------+--+--+--+------------+-----------------+---------------+|/
| |
\-----------------------------------------------------------------/
Figure 1: Compression Decompression Context
The goal of this document is to provide an YANG data model to
represent SCHC Compression and Fragmentation rules, to allow
management over a LPWAN network. The main constraints are:
o since the device may be managed through the LPWAN network,
management messages must be compact. COREconf offers a
representation based on CBOR.
o this data model can be extended with new values, such as new field
id, new MO or CDA.
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2. YANG types
2.1. Field Identifier
The field identifier is used to identify a specific field. It is
viewed as an uint32.
2.2. Target Value field
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