# A Multiprotocol Wireless Sensor Network for High Performance Sport Applications
## 1 Introduction
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multicolumn{1}{c}{\multirow{2}{*}{**Standard**}} & \multicolumn{1}{c}{\multirow{2}{*}{\begin{tabular}{c} **Max** \\ **TX Range1** \\ \end{tabular} }} & \multicolumn{1}{c}{\multirow{2}{*}{\begin{tabular}{c} **Max** \\ **Data Rate** \\ \end{tabular} }} & \multicolumn{1}{c}{\multirow{2}{*}{\begin{tabular}{c} **Application** \\ **Throughput** \\ \end{tabular} }} & \multirow{2}{*}{\begin{tabular}{c} **Band** \\ **Application** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Application** \\ **Topology** \\ \end{tabular} } \\ \hline ZigBee & IEEE 802.15.4 & 100 m & 500 kbps & 35.0 kbps & 2.4 GHz & Wireless Sensors & Star, Mesh \\ \hline Z-Wave & Proprietary & 100 m & 100 kbps & 6 kbps & \begin{tabular}{c} 900 MHz \\ 2.4 GHz \\ \end{tabular} & Wireless Sensors & Mesh \\ \hline ANT+ & Proprietary & 30 m & 60 kbps & 260 kbps & 2.4 GHz & Wireless Sensors & Star, Tree, P2P, Mesh \\ \hline Bluetooth & IEEE 802.15.1 & 10 m & 1–3 Mbps & 2.1 Mbps & 2.4 GHz & Wireless Sensors & P2P, Star \\ \hline Bluetooth 4.0 LE & IEEE 802.15.1 & 100 m & 2 Mbps & 305 kbps & 2.4 GHz & Wireless Sensors & \begin{tabular}{c} P2P, Mesh, Star, \\ Broadcast \\ \end{tabular} \\ \hline Bluetooth 5.0 LE & IEEE 802.15.1 & 400 m & 2 Mbps & 1360 kbps & 2.4 GHz & Wireless Sensors & \begin{tabular}{c} P2P, Mesh, Star, \\ Broadcast \\ \end{tabular} \\ \hline Wi-Fi & \begin{tabular}{c} IEEE 802.11a \\ WLAN \\ \end{tabular} & 5 km & 54 Mbps & 20 Mbps & 5 GHz & \begin{tabular}{c} PC based \\ data acquisition \\ \end{tabular} & Star, Tree, P2P \\ \hline Wi-Fi & IEEE 802.11n & 250 m & 600 Mbps & 72 Mbps & 2.4 GHz & \
\begin{tabular}{c} PC based \\ data acquisition \\ \end{tabular} & Star, Tree, P2P \\ \hline WiMAX &
\begin{tabular}{c} IEEE 802.16 \\ WWAN \\ \end{tabular} & 15 km & 75 Mbps & 4–8 Mbps & 2.3-5.8 GHz & MobileInternet & Star, Tree, P2P \\ \hline \multicolumn{1}{c}{\multirow{4}{*}{\({}^{1}\) (open-air outdoor).}} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} \\ \end{tabular}
\end{table} 
Table 1: Comparison of different wireless communication protocol. designed for personal area networks (PANs) [27; 28] or body sensor networks (BSNs) [29], which cover a very short distance. In this paper, we present a WSN for sport applications based on a multiprotocol architecture: The communication with the user is based on a Wi-Fi link, while data transmission between the nodes is made via high performance 2.4 GHz modules. Furthermore, the user interface will be implemented on a simple webpage, readable by a web browser on any kind of OS and terminal. The architecture is composed of a main node where, for example, the sensors that have to measure parameters related to the overall performance (i.e., the speed or the acceleration of a boat) are mounted: Inertial measurement unit (IMU), GPS, etc. The slave nodes can be adapted to host different kinds of sensors, for instance, a thermometer, a potentiometer or an encoder. Both the master and slave nodes can be configured to host different kinds of sensors. This means that the whole system can be customized with minimal hardware and software modifications, greatly reducing the development time and cost.