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Status:

PROPOSED STANDARD

Updated by:

RFC 9441

Authors:

A. Minaburo
L. Toutain
C. Gomez
D. Barthel
JC. Zuniga

Stream:

IETF

Source:

lpwan (int)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC8724

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Abstract

This document defines the Static Context Header Compression andfragmentation (SCHC) framework, which provides both a headercompression mechanism and an optional fragmentation mechanism. SCHChas been designed with Low-Power Wide Area Networks (LPWANs) in mind.

SCHC compression is based on a common static context stored both inthe LPWAN device and in the network infrastructure side. Thisdocument defines a generic header compression mechanism and itsapplication to compress IPv6/UDP headers.

This document also specifies an optional fragmentation and reassemblymechanism. It can be used to support the IPv6 MTU requirement overthe LPWAN technologies. Fragmentation is needed for IPv6 datagramsthat, after SCHC compression or when such compression was notpossible, still exceed the Layer 2 maximum payload size.

The SCHC header compression and fragmentation mechanisms areindependent of the specific LPWAN technology over which they areused. This document defines generic functionalities and offersflexibility with regard to parameter settings and mechanism choices.This document standardizes the exchange over the LPWAN between twoSCHC entities. Settings and choices specific to a technology or aproduct are expected to be grouped into profiles, which are specifiedin other documents. Data models for the context and profiles are outof scope.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.