< draft-ietf-lpwan-schc-over-nbiot-04.txt		draft-ietf-lpwan-schc-over-nbiot-05.txt >
	lpwan Working Group E. Ramos		lpwan Working Group E. Ramos
	Internet-Draft Ericsson		Internet-Draft Ericsson
	Intended status: Informational A. Minaburo		Intended status: Informational A. Minaburo
	Expires: July 23, 2021 Acklio		Expires: January 26, 2022 Acklio
	January 19, 2021		July 25, 2021
	SCHC over NB-IoT		SCHC over NB-IoT
	draft-ietf-lpwan-schc-over-nbiot-04		draft-ietf-lpwan-schc-over-nbiot-05
	Abstract		Abstract
	The Static Context Header Compression (SCHC) specification describes		The Static Context Header Compression (SCHC) specification describes
	a header compression and fragmentation functionalities for LPWAN (Low		a header compression and fragmentation functionalities for LPWAN (Low
	Power Wide Area Networks) technologies. SCHC was designed to be		Power Wide Area Networks) technologies. SCHC was designed to be
	adapted over any of the LPWAN technologies.		adapted over any of the LPWAN technologies.
	This document describes the use of SCHC over the NB-IoT wireless		This document describes the use of SCHC over the NB-IoT wireless
	access, and provides elements for an efficient parameterization.		access, and provides elements for an efficient parameterization.
	skipping to change at page 1, line 37 ¶		skipping to change at page 1, line 37 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at http://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on July 23, 2021.		This Internet-Draft will expire on January 26, 2022.
	Copyright Notice		Copyright Notice
	Copyright (c) 2021 IETF Trust and the persons identified as the		Copyright (c) 2021 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 2, line 49 ¶		skipping to change at page 2, line 49 ¶
	10.1. NB-IoT User Plane protocol architecture . . . . . . . . 16		10.1. NB-IoT User Plane protocol architecture . . . . . . . . 16
	10.1.1. Packet Data Convergence Protocol (PDCP) . . . . . . 16		10.1.1. Packet Data Convergence Protocol (PDCP) . . . . . . 16
	10.1.2. Radio Link Protocol (RLC) . . . . . . . . . . . . . 17		10.1.2. Radio Link Protocol (RLC) . . . . . . . . . . . . . 17
	10.1.3. Medium Access Control (MAC) . . . . . . . . . . . . 18		10.1.3. Medium Access Control (MAC) . . . . . . . . . . . . 18
	10.2. NB-IoT Data over NAS (DoNAS) . . . . . . . . . . . . . . 19		10.2. NB-IoT Data over NAS (DoNAS) . . . . . . . . . . . . . . 19
	11. Normative References . . . . . . . . . . . . . . . . . . . . 21		11. Normative References . . . . . . . . . . . . . . . . . . . . 21
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 22		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 22
	1. Introduction		1. Introduction
	The Static Context Header Compression (SCHC) {RFC8724} defines a		The Static Context Header Compression (SCHC) [RFC8724] defines a
	header compression scheme and fragmentation functionality, both		header compression scheme and fragmentation functionality, both
	specially tailored for Low Power Wide Area Networks (LPWAN) networks		specially tailored for Low Power Wide Area Networks (LPWAN) networks
	defined in [RFC8376].		defined in [RFC8376].
	Header compression is needed to efficiently bring Internet		Header compression is needed to efficiently bring Internet
	connectivity to the node within an NB-IoT network. SCHC uses a		connectivity to the node within an NB-IoT network. SCHC uses a
	static context to performs header compression with specific		static context to performs header compression with specific
	parameters that need to be adapted into the NB-IoT wireless access.		parameters that need to be adapted into the NB-IoT wireless access.
	This document assumes functionality for NB-IoT of 3GPP release 15		This document assumes functionality for NB-IoT of 3GPP release 15.
	otherwise other versions functionality is explicitly mentioned in the		Otherwise other versions' functionality is explicitly mentioned in
	text.		the text.
	This document describes the use of SCHC and its parameterizing over		This document describes the use of SCHC and its parameterizing over
	the NB-IoT wireless access.		the NB-IoT wireless access.
	2. Terminology		2. Terminology
	This document will follow the terms defined in [RFC8724], in		This document will follow the terms defined in [RFC8724], in
	[RFC8376], and the TGPP23720.		[RFC8376], and the TGPP23720.
	o CIoT. Cellular IoT		o CIoT. Cellular IoT
	skipping to change at page 21, line 17 ¶		skipping to change at page 21, line 17 ¶
	+---+ +---+ +---+ +----+		+---+ +---+ +---+ +----+
	| |/ / | \ | |		| |/ / | \ | |
	NAS /RRC +--------+---|---+----+ +---------+		NAS /RRC +--------+---|---+----+ +---------+
	|NAS/|AP1|AP1|AP2|NAS/| |NAS/|AP2 |		|NAS/|AP1|AP1|AP2|NAS/| |NAS/|AP2 |
	|RRC |PDU|PDU|PDU|RRC | |RRC |PDU |		|RRC |PDU|PDU|PDU|RRC | |RRC |PDU |
	+--------+-|-+---+----+ +---------|		+--------+-|-+---+----+ +---------|
	| |\ | | |		| |\ | | |
	|<--Max. 1600 bytes-->|__ |_ |		|<--Max. 1600 bytes-->|__ |_ |
	| | \__ \___ \_ \_		| | \__ \___ \_ \_
	| | \ \ \__ \_		| | \ \ \__ \_
	+---------------|+-----|----------+ \ \		+---------------|+-----|----------+ \ \
	RLC |RLC | NAS/RRC ||RLC | NAS/RRC | +----|-------+		RLC |RLC | NAS/RRC ||RLC | NAS/RRC | +----|-------+
	|Head| PDU(1/2)||Head | PDU (2/2)| |RLC |NAS/RRC|		|Head| PDU(1/2)||Head | PDU (2/2)| |RLC |NAS/RRC|
	+---------------++----------------+ |Head|PDU |		+---------------++----------------+ |Head|PDU |
	| | | \ | +------------+		| | | \ | +------------+
	| | LCID1 | \ | | /		| | LCID1 | \ | | /
	| | | \ \ | |		| | | \ \ | |
	| | | \ \ | |		| | | \ \ | |
	| | | \ \ \ |		| | | \ \ \ |
	+----+----+----------++-----|----+---------++----+---------|---+		+----+----+----------++-----|----+---------++----+---------|---+
	MAC |MAC |RLC | RLC ||MAC |RLC | RLC ||MAC | RLC |Pad|		MAC |MAC |RLC | RLC ||MAC |RLC | RLC ||MAC | RLC |Pad|
End of changes. 6 change blocks.
	9 lines changed or deleted		9 lines changed or added
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