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ORGERIE Anne-Cecile 2019-10-18 21:53:35 +02:00
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@ -260,6 +260,8 @@ application. While the derived model is more generic, we focus on a
given application to obtain a precise use-case with accurate power given application to obtain a precise use-case with accurate power
consumption measurements. consumption measurements.
\subsection{IoT device side}
The Google Nest Thermostat relies on five sensors: temperature, The Google Nest Thermostat relies on five sensors: temperature,
humidity, near-field activity, far-field activity and ambient humidity, near-field activity, far-field activity and ambient
light~\cite{Nest}. Periodical measurements, sent through wireless light~\cite{Nest}. Periodical measurements, sent through wireless
@ -284,6 +286,8 @@ home. We consider low-bandwidth applications where devices produces
several network packets during each sensing period. The transmitting several network packets during each sensing period. The transmitting
frequency can vary from one to several packet sent per minute~\cite{Cisco2019}. frequency can vary from one to several packet sent per minute~\cite{Cisco2019}.
\subsection{Cloud server side}
We consider that the link between the AP and the Cloud is composed of We consider that the link between the AP and the Cloud is composed of
several network switches and routers using Ethernet as shown in several network switches and routers using Ethernet as shown in
Figure~\ref{fig:parts}. The number of routers on the path depends on the Figure~\ref{fig:parts}. The number of routers on the path depends on the
@ -303,6 +307,14 @@ same time.
\label{fig:parts} \label{fig:parts}
\end{figure} \end{figure}
The Cloud part of the application gathers the data sent by the IoT
devices. These data are treated either on the fly (e.g. threshold
detection) or periodically, and action commands are sent back to the
device if required. For instance, if the user has set a targeted
temperature, the connected thermostat sends the measured
temperature regularly, and once the target is reached, the Cloud server detects
it, and sends back to the IoT device the command to pause the heater.
In the following, we describe the experimental setup, the results and In the following, we describe the experimental setup, the results and
the derived end-to-end model. For all these steps, we decompose the overall the derived end-to-end model. For all these steps, we decompose the overall
IoT architecture into three parts: the IoT device part, the networking IoT architecture into three parts: the IoT device part, the networking