rfc9178v3.txt		rfc9178.txt
	Internet Engineering Task Force (IETF) J. Arkko		Internet Engineering Task Force (IETF) J. Arkko
	Request for Comments: 9178 Ericsson		Request for Comments: 9178 Ericsson
	Category: Informational A. Eriksson		Category: Informational A. Eriksson
	ISSN: 2070-1721 Independent		ISSN: 2070-1721 Independent
	A. Keränen		A. Keränen
	Ericsson		Ericsson
	April 2022		May 2022
	Building Power-Efficient Constrained Application Protocol (CoAP) Devices		Building Power-Efficient Constrained Application Protocol (CoAP) Devices
	for Cellular Networks		for Cellular Networks
	Abstract		Abstract
	This memo discusses the use of the Constrained Application Protocol		This memo discusses the use of the Constrained Application Protocol
	(CoAP) in building sensors and other devices that employ cellular		(CoAP) in building sensors and other devices that employ cellular
	networks as a communications medium. Building communicating devices		networks as a communications medium. Building communicating devices
	that employ these networks is obviously well known, but this memo		that employ these networks is obviously well known, but this memo
	skipping to change at line 629 ¶		skipping to change at line 629 ¶
	[RFC7252] Shelby, Z., Hartke, K., and C. Bormann, "The Constrained		[RFC7252] Shelby, Z., Hartke, K., and C. Bormann, "The Constrained
	Application Protocol (CoAP)", RFC 7252,		Application Protocol (CoAP)", RFC 7252,
	DOI 10.17487/RFC7252, June 2014,		DOI 10.17487/RFC7252, June 2014,
	<https://www.rfc-editor.org/info/rfc7252>.		<https://www.rfc-editor.org/info/rfc7252>.
	[RFC7641] Hartke, K., "Observing Resources in the Constrained		[RFC7641] Hartke, K., "Observing Resources in the Constrained
	Application Protocol (CoAP)", RFC 7641,		Application Protocol (CoAP)", RFC 7641,
	DOI 10.17487/RFC7641, September 2015,		DOI 10.17487/RFC7641, September 2015,
	<https://www.rfc-editor.org/info/rfc7641>.		<https://www.rfc-editor.org/info/rfc7641>.
			[RFC8949] Bormann, C. and P. Hoffman, "Concise Binary Object
			Representation (CBOR)", STD 94, RFC 8949,
			DOI 10.17487/RFC8949, December 2020,
			<https://www.rfc-editor.org/info/rfc8949>.
	[RFC9176] Amsüss, C., Ed., Shelby, Z., Koster, M., Bormann, C., and		[RFC9176] Amsüss, C., Ed., Shelby, Z., Koster, M., Bormann, C., and
	P. van der Stok, "Constrained RESTful Environments (CoRE)		P. van der Stok, "Constrained RESTful Environments (CoRE)
	Resource Directory", RFC 9176, DOI 10.17487/RFC9176, April		Resource Directory", RFC 9176, DOI 10.17487/RFC9176, April
	2022, <https://www.rfc-editor.org/info/rfc9176>.		2022, <https://www.rfc-editor.org/info/rfc9176>.
	[W3C.REC-exi-20140211]		[W3C.REC-exi-20140211]
	Schneider, J., Kamiya, T., Peintner, D., and R. Kyusakov,		Schneider, J., Kamiya, T., Peintner, D., and R. Kyusakov,
	"Efficient XML Interchange (EXI) Format 1.0 (Second		"Efficient XML Interchange (EXI) Format 1.0 (Second
	Edition)", World Wide Web Consortium Recommendation REC-		Edition)", World Wide Web Consortium Recommendation REC-
	exi-20140211, February 2014, <https://www.w3.org/TR/exi/>.		exi-20140211, February 2014, <https://www.w3.org/TR/exi/>.
	skipping to change at line 675 ¶		skipping to change at line 680 ¶
	Novo, "Implementing Tiny COAP Sensors", Work in Progress,		Novo, "Implementing Tiny COAP Sensors", Work in Progress,
	Internet-Draft, draft-arkko-core-sleepy-sensors-01, 5 July		Internet-Draft, draft-arkko-core-sleepy-sensors-01, 5 July
	2011, <https://datatracker.ietf.org/doc/html/draft-arkko-		2011, <https://datatracker.ietf.org/doc/html/draft-arkko-
	core-sleepy-sensors-01>.		core-sleepy-sensors-01>.
	[RFC8387] Sethi, M., Arkko, J., Keranen, A., and H. Back, "Practical		[RFC8387] Sethi, M., Arkko, J., Keranen, A., and H. Back, "Practical
	Considerations and Implementation Experiences in Securing		Considerations and Implementation Experiences in Securing
	Smart Object Networks", RFC 8387, DOI 10.17487/RFC8387,		Smart Object Networks", RFC 8387, DOI 10.17487/RFC8387,
	May 2018, <https://www.rfc-editor.org/info/rfc8387>.		May 2018, <https://www.rfc-editor.org/info/rfc8387>.
	[RFC8949] Bormann, C. and P. Hoffman, "Concise Binary Object
	Representation (CBOR)", STD 94, RFC 8949,
	DOI 10.17487/RFC8949, December 2020,
	<https://www.rfc-editor.org/info/rfc8949>.
	[CoAP-Alive]		[CoAP-Alive]
	Castellani, A. P. and S. Loreto, "CoAP Alive Message",		Castellani, A. and S. Loreto, "CoAP Alive Message", Work
	Work in Progress, Internet-Draft, draft-castellani-core-		in Progress, Internet-Draft, draft-castellani-core-alive-
	alive-00, 29 March 2012,		00, 29 March 2012, <https://datatracker.ietf.org/doc/html/
	<https://datatracker.ietf.org/doc/html/draft-castellani-		draft-castellani-core-alive-00>.
	core-alive-00>.
	[CoAP-Publ-Monitor]		[CoAP-Publ-Monitor]
	Fossati, T., Giacomin, P., and S. Loreto, "Publish and		Fossati, T., Giacomin, P., and S. Loreto, "Publish and
	Monitor Options for CoAP", Work in Progress, Internet-		Monitor Options for CoAP", Work in Progress, Internet-
	Draft, draft-fossati-core-publish-monitor-options-01, 10		Draft, draft-fossati-core-publish-monitor-options-01, 10
	March 2012, <https://datatracker.ietf.org/doc/html/draft-		March 2012, <https://datatracker.ietf.org/doc/html/draft-
	fossati-core-publish-monitor-options-01>.		fossati-core-publish-monitor-options-01>.
	[CoRE-Mirror]		[CoRE-Mirror]
	Vial, M., "CoRE Mirror Server", Work in Progress,		Vial, M., "CoRE Mirror Server", Work in Progress,
	Internet-Draft, draft-vial-core-mirror-proxy-01, 13 July		Internet-Draft, draft-vial-core-mirror-proxy-01, 13 July
	2012, <https://datatracker.ietf.org/doc/html/draft-vial-		2012, <https://datatracker.ietf.org/doc/html/draft-vial-
	core-mirror-proxy-01>.		core-mirror-proxy-01>.
	[CoAP-PubSub]		[CoAP-PubSub]
	Koster, M., Keranen, A., and J. Jimenez, "Publish-		Koster, M., Keranen, A., and J. Jimenez, "Publish-
	Subscribe Broker for the Constrained Application Protocol		Subscribe Broker for the Constrained Application Protocol
	(CoAP)", Work in Progress, Internet-Draft, draft-ietf-		(CoAP)", Work in Progress, Internet-Draft, draft-ietf-
	core-coap-pubsub-09, 30 September 2019,		core-coap-pubsub-10, 4 May 2022,
	<https://datatracker.ietf.org/doc/html/draft-ietf-core-		<https://datatracker.ietf.org/doc/html/draft-ietf-core-
	coap-pubsub-09>.		coap-pubsub-10>.
	[Android-Bundle]		[Android-Bundle]
	"Optimizing Downloads for Efficient Network Access",		"Optimize network access", Android developer note, May
	Android developer note, August 2020,		2022, <https://developer.android.com/training/efficient-
	<https://developer.android.com/training/efficient-
	downloads/efficient-network-access.html>.		downloads/efficient-network-access.html>.
	Acknowledgments		Acknowledgments
	The authors would like to thank Zach Shelby, Jan Holler, Salvatore		The authors would like to thank Zach Shelby, Jan Holler, Salvatore
	Loreto, Matthew Vial, Thomas Fossati, Mohit Sethi, Jan Melen, Joachim		Loreto, Matthew Vial, Thomas Fossati, Mohit Sethi, Jan Melen, Joachim
	Sachs, Heidi-Maria Rissanen, Sebastien Pierrel, Kumar Balachandran,		Sachs, Heidi-Maria Rissanen, Sebastien Pierrel, Kumar Balachandran,
	Muhammad Waqas Mir, Cullen Jennings, Markus Isomaki, Hannes		Muhammad Waqas Mir, Cullen Jennings, Markus Isomaki, Hannes
	Tschofenig, and Anna Larmo for interesting discussions in this		Tschofenig, and Anna Larmo for interesting discussions in this
	problem space.		problem space.
End of changes. 7 change blocks.
	16 lines changed or deleted		14 lines changed or added
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