Implementing Tiny COAP Sensors

Document Type Expired Internet-Draft (individual)
Authors Heidi-Maria Rissanen  , Oscar Novo  , Jari Arkko  , Zoltan Turanyi  , Salvatore Loreto 
Last updated 2011-07-05
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The authors are developing COAP and IPv6-based sensor networks for environments where lightweight implementations, long battery lifetimes, and minimal management burden are important. The memo shows how different communication models supported by COAP affect implementation complexity and energy consumption, far more so than mere changes in message syntax. Our prototype implements a multicast-based IPv6, UDP, COAP, and XML protocol stack in less than 50 assembler instructions. While this extremely minimal implementation is suitable only for limited applications and makes a number of assumptions, the general conclusions point to need for further work in developing the COAP multicast and observation frameworks.


Heidi-Maria Rissanen (
Oscar Novo (
Jari Arkko (
Zoltan Turanyi (
Salvatore Loreto (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)