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The promise of 802.11ax – What should we expect?
Posted by Jatin Parekh on Jun 18, 2018
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What is new in 802.11ax
802.11ax promises a lateral progression of the WiFi standard. Until now, all new WiFi specifications were focused on improving the peak data rates. 802.11ax takes a side step and promises higher efficiency rather than higher peak rates. It promises to improve the total throughput in a cell and deliver more data to the clients rather than try to improve the speed at which the data is transmitted. 802.11ax features will be available in 2.4 GHz band as well (as opposed to 802.11ac which was available only in 5GHz).

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802.11ax: Optimistic CSMA for Efficient Channel Reuse in WiFi
Posted by Hemant Chaskar on Jul 9, 2016

802.11ax is the new 802.11 standard currently in the making. Unlike earlier 802.11 standards that mainly focused on increasing raw link speeds, the design objective now is to increase airtime efficiency. One feature it introduces is OFDMA (Orthogonal Frequency-Division Multiple Access) to address the airtime inefficiency caused by short WiFi frames. The other is dynamic sensitivity control, which modifies traditional CSMA (Carrier Sense Multiple Access) to address airtime inefficiency caused by co-channel interference during channel reuse.