@misc{rfc9441, series = {Request for Comments}, number = 9441, howpublished = {RFC 9441}, publisher = {RFC Editor}, doi = {10.17487/RFC9441}, url = {https://www.rfc-editor.org/info/rfc9441}, author = {Juan-Carlos Zúñiga and Carles Gomez and Sergio Aguilar and Laurent Toutain and Sandra Cespedes and Diego S. Wistuba La Torre}, title = {{Static Context Header Compression (SCHC) Compound Acknowledgement (ACK)}}, pagetotal = 22, year = 2023, month = jul, 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.}, }