White-Fi 和 Wi-Fi HaLow 是低于 1GHz 的标准，旨在支持物联网应用的要求。两种 WiFi 标准都旨在提供远距离和低功耗操作。
1. White-Fi
White-fi 是用于表示 Wi-Fi 的 IEEE 802.11af 版本的通用名称。 White-Fi 通常被称为 Super Wi-Fi 或 White space Wi-Fi。它的设计方式是使用电视频道在极高频频段和超高频频段下端的未使用空间或空白空间。它适用于非常远程的设备。 white-fi 的主要缺点之一是它需要特定频段且昂贵的硬件组件。
2. Wi-Fi HaLow
物联网传感器需要以较低的数据速率进行远距离数据传输。 Wi-Fi HaLow 的推出就是为了满足这些要求。它是用于表示 Wi-Fi 的 IEEE 802.11ah 版本的通用名称。 Wi-Fi HaLow 能够穿透墙壁和物体。它可以被认为是突发和短数据的理想候选者。该标准的应用很少包括数字医疗市场、智慧城市和智能家居等……
White-Fi 和 Wi-Fi HaLow 之间的区别：
| S.No | White-Fi | Wi-Fi HaLow |
|---|---|---|
| 1. | IEEE 802.11af version of Wi-Fi | IEEE 802.11ah version of Wi-Fi |
| 2. | It was released in 2014. | It was released in 2016. |
| 3. | Operates in the 54 to 790 MHz frequency band. | Operates in the 900 MHz frequency band |
| 4. | It works with channels having bandwidths of 6, 7, and 8 MHz. | It works with channels having bandwidths of 1, 2, 4, 8, and 16 MHz. |
| 5. | The maximum data rate is 26.7 Mbps. | The data rate of 100 kb/s are possible in a 1-MHz channel and up to several hundred Mb/s are achievable in a 16-MHz channel. |
| 6. | It promises a coverage range greater than 1 km. | It promises a coverage range upto 1 km. |
| 7. | Operates in the TV white spaces | Transmits in the unlicensed frequency band at 900 MHz |
| 8. | With a low transmit power of just 100 mW for mobile user stations and 4 W for base stations or access points, there’s an opportunity to use battery-operated equipment communicating over White-Fi. | Power Consumption is low. |