The Wi-Fi Alliance has released version 802.11ah of its Wi-Fi standard, nicknamed HaLow (pronounced Hay-Low). Wi-Fi HaLow is designed for Internet of Things (IoT).
While current 802.11 Wi-Fi standards commonly operate in 2.4GHz and 5GHz frequencies, the new 802.11ah HaLow standard was specifically created to work in lower bands, at 900Mhz, offering lower power consumption, boosting connectivity.
http://www.malaysianwireless.com/2016/01/wifi-halow-standard-80211ah-internet-of-things/
