# IEEE 802.11 ah: A Technology to Face the IoT Challenge
## 4 IoT Applications
### Meeting the Requirements of IoT Applications
A number of STAs \(>\) 1 means that \(X/2\) bidirectional links can coexist in the same channel and still meet the throughput requirements. Also note that, in this particular application, we can safely assume McM MIMO capable nodes, which have the potential to multiply by M the throughput obtained (\(\textless{}\text{}\text{}\text{}\text{}\text{}\text{}\text{}\text{}\text{} \text{}\text{}\text{}\text{}\text{}\text{}\text{}\text{} \begin{table}
\begin{tabular}{c c|c|c c c c c c} \hline \hline  & **Application** & **Description** & **Average Payload** & **Average Aggregate** & **Supported Devices** & **Supported Devices** & **Supported Devices** \\  & & **Size (Bytes)** & **Data Rate (bytes)** & **at +1 km** & **at +500 m** & **at +250 m** \\ \hline Audio & Audio 1 & & & & & & \\  & Code 67231 & & & & & & & \\  & Rate 6.4 Mbps & & & & & & \\ \cline{2-8}  & Audio 2 & & & & & & \\  & Code 42 MMs & & & & & & \\  & Rate 12.2 Mbps & & & & & & \\ \hline Video & Video 1 & & & & & & \\ Video & Code 124 & & & & & & \\ Video & Rate 500 kbps & & & & & & \\  & & & & & & \\  & Video 2 & & & & & & \\  & Code 124 & & & & & & \\ \hline \multirow{3}{*}{Data} & Electronic Health Record (EHR) + & & & & & & \\  & & & & & & & \\  & & & & & & & \\ \cline{2-8}  & IMG 1 Low resolution lossless & & & & & & \\  & compression, 1042 \(\times\) 768 px & & Applications involving the transmission of large files in the content of smart/e-health, & & & & \\  & & & & & & \\ \cline{2-8}  & IMG 2+ High resolution lossless & & & & & & \\  & composenet, 400 \(\times\) 400 px & & & & & \\  & & & & & & \\  & & & & & & \\  & & & & & & \\  & & & & & & \\  & & & & & & \\ \hline \multirow{3}{*}{Biometrics} & Electronic Health Record (EHR) + & & & & & & \\  & IMG 1 Low resolution lossless & & & & & \\  & compression, 1042 \(\times\) 768 px & & Applications involve the transmission of large files in the content of smart/e-health, & & & \\  & & & & & & \\  & & & & & & \\  & & & & & & \\  & & & & & \\  & & & & & \\  & & & & & & \\  & & & & & \\ \hline \hline \end{tabular} + Bulk data transfer applications will benefit from the use of frame aggregation. For example, with frame aggregation, IEEE 802.11 ah could support up to 10 simultaneous EHR users at 600 m whereas, without aggregation, the available throughput only leaves room for one user meeting the required quality. ** and ** Video 2 and IMG 2 applications will also benefit from the use of frame aggregation and of more than 1 5%, however IEEE 802.11 ah is able to transmit typical quality images and video files needed for most applications.  
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Table 5: Number of supported STAs per IEEE 802.11 ah AP for different multimedia and smart/e-health applications. A clear example is provided with multimedia applications. The multimedia term has not been usually associated with the IoT paradigm due to the lack of capacity of traditional IoT solutions for supporting the required bit rates. With the exposed analysis we show that IEEE 802.11 ah enables the IoT to adopt new use cases involving the transmission of multimedia data (i.e., audio/video), thus making the link between multimedia and IoT applications now possible.