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\title{Chatty Things -- Making the Internet of Things Readily Usable for the
Masses with XMPP}
\author{Roland Hieber}
\date{Seminar Communications and Multimedia, TU~Braunschweig \\[1em] \today}

\begin{document}
\maketitle

%% Introduction
\section{Introduction}
\todo
\pages{0-1}
short overview, not too long: what do we want, what are we
going to do

basically: how do we talk to our smart home?
\paragraph{Human-to-Machine Communication:} especiall in the Internet of Things,
	Chatty Things need to be accessible for the user and should be easy to talk
	to.
\paragraph{Interoperability} integration into already existing
infrastructure.

%% Prerequisites
\section{Prerequisites}
\todo
overview to the techniques used in the paper by Klauk and Kirsche

\cite{klauck-kirsche-chattythings}

\input{sec-address-allocation.tex}
\input{sec-dns-extensions.tex}
\input{sec-xmpp.tex}
\input{sec-chatty-things.tex}

\section{Related Approaches}
\todo
\pages{3}
Middleware, Application protocol gateways:
\begin{itemize}
	\item Constrained Application Protocol \cite{draft-ietf-core-coap-18}
	\begin{itemize}
		\item machine-to-machine
		\item everything-built-in
		\item discovery over multicast, service discovery over /.well-known
			entry-point
		\item maps to HTTP => stateless => relies on application gateway
		\item low protocol overhead and parsing complexity (binary messages)
		\item only draft status
		\item UDP with Ack and IDs instead of TCP... (limited state machine)
		\item proxies
		\item asynchronous messages
	\end{itemize}
	\item MQ Telemetry Transport \cite{mqtt}
	\begin{itemize}
		\item TCP/IP
		\item small overhead: 2 byte header + variable header length
		\item publish-subscribe with topic names
		\item binary protocol => application-level gateway
		\item discovery?
	\end{itemize}
	\item Devices Profile for Web Services \cite{zeeb-moritz-ws4d}
	\begin{itemize}
		\item TCP/IP -> HTTP -> SOAP -> Web Services. Overhead!
		\item but very extendable and composable
		\item discovery as a service
		\item focused on multiple platforms, deeply embedded and servers
		\item IPv6 partly experimental
		\item ROM usage of uDPWS: 45 kByte
	\end{itemize}

\end{itemize}

\section{Discussion}
\todo
comparison of mentioned approaches

\pages{1-2}

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