\chapter{Introduction}
Boundless communication for everyone, everywhere, anytime.
That was the main idea and dream behind the development of the \gls{gsm} technology.
Considering its reception and growth \cite{GSM2009,GSM_history2011,GSM_stats2011} it can be said that \gls{gsm} was one of the most successful technologies of the last 30 years.
Since the advent of portable radio equipment and portable microprocessors, mobile phones became technologically possible in the 80's.
From this point on, 

\section{Structure}

\section{Disclaimer}
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