IEEE 802.11ax: How to Build High Efficiency WLANs

Wi-Fi was designed just to replace wired Internet connection, but it has changed the Internet as a whole. Wireless devices generate the largest percentage of the Internet traffic and the Wi-Fi market is continuously raising, which brings new challenges connected with more devices, more data, and higher Quality of Experience expectations. Since todays Wi-Fi is inefficient in terms of these challenges, in 2013, IEEE LAN/MAN Standard Committee launched a new task group, which aims to improve Wi-Fi by 2019. In a short time, the group has attracted much attention from leading telecommunication manufacturers. In the paper, we observe activities of the group, paying much attention to the challenges and to those solutions, which have been proposed by November 2015.