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Liaison statement
Liaison statement from the IETF LPWAN WG to 3GPP

Additional information about IETF liaison relationships is available on the IETF webpage and the Internet Architecture Board liaison webpage.
State Posted
Submitted Date 2022-09-27
From Group lpwan
From Contact Pascal Thubert
To Group 3GPP
To Contacts Lionel Morand <>
Susanna Kooistra <>
Cc √Čric Vyncke <>
Erik Kline <>
IPv6 over Low Power Wide-Area Networks Discussion List <>
Pascal Thubert <>
Alexander Pelov <>
Gonzalo Camarillo <>
Response Contact Alexander Pelov <>
Pascal Thubert <>
Purpose For action
Deadline 2022-10-20 Action Needed
Attachments For action LPWAN to 3GPP
We write to 3GPP to  expose new IETF work
( on the
application of the SCHC protocol (RFC 8724/8824) on NB IOT. This document is
currently under IETF Last Call till October 7th, 2022, and it should be
submitted to the IESG evaluation for final approval on October 27th, 2022. All
comments are welcome until the ballot of 20 October, to be sent to the mailing list, or exceptionally to instead .

SCHC provides a deep compression of the IPv6 packets at Layer-3 and above, and
enables new capabilities such as IPv6 and CoAP signaling in highly constrained
network like LP-WANs where it was previously considered impossible. SCHC also
provides a fragmentation mechanism that would not necessarily be used in the
case of NB-IOT.

The new work at the IETF LPWAN Working Group provides informational
considerations on how SCHC could be used over the Radio link and the No-Access
Stratum. It also provides a normative description of the usage of SCHC over the
Non-IP Data Delivery service. We foresee a potential of collaboration and cross
referencing between our IETF specifications and 3GPP standards and seek advice
and feedback.