Static Context Header Compression Compound Acknowledgement
RFC 9441, “Static Context Header Compression Compound Acknowledgement”, is a Proposed Standard document published in July 2023 by J. Zúñiga, C. Gomez, S. Aguilar, L. Toutain, S. Céspedes, D. Wistuba. It updates RFC 8724, RFC 9363. The canonical text is published by the RFC Editor.
Abstract
This document updates the Static Context Header Compression (SCHC) and fragmentation protocol (RFC 8724) and the corresponding YANG module (RFC 9363). It defines a SCHC Compound Acknowledgement (ACK) message format and procedure, which are intended to reduce the number of response transmissions (i.e., SCHC ACKs) in the ACK-on-Error Mode, by accumulating bitmaps of several windows in a single SCHC message (i.e., the SCHC Compound ACK).
Both the message format and procedure are generic, so they can be used, for instance, by any of the four Low-Power Wide Area Network (LPWAN) technologies defined in RFC 8376, which are Sigfox, Long Range Wide Area Network (LoRaWAN), Narrowband Internet of Things (NB-IoT), and IEEE 802.15.4w.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9441 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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