Episode Archives

CTS 167: 802.11ax 1024-QAM & HE-MCSs

1024-QAM Evolution of the modulation techniques we are using today with 802.11ax (256-QAM). With 1024-QAM, we are now able to encode 10 bits per cycle on each subcarrier. The way we are able to do that is by increasing the number of different levels of amplitudes used to encode the data. If you want to...

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CTS 166: 802.11ax HE Channel Access

There are multiple functions in which a client or AP can gain access to the channel. What we’re going to discuss is in addition to the HCF and DCF. TXOP duration-based RTS/CTS Intra-BSS or inter-BSS frame determination SRG PPDU determination Two NAVs MU-RTS/CTS EDCA using MU EDCA parameters GOOD NEWS, CTS IS NOT GOING ANYWHERE!...

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CTS 165: Ekahau Unveils New Products (Sponsored)

Ekahau Connect Jussi joins us on the show to talk about the latest announcement of Ekahau Connect and new products. Jussi has been on the show multiple times before: CTS 009: Jussi Kiviniemi of Ekahau CTS 069: Jussie of Ekahau CTS 109: Ekahau Sidekick, Spectrum Analysis, and Finnish Rap CTS 142: Jussi Kiviniemi Discusses the...

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CTS 164: 802.11ax Target Wake Time

Objectives of TWT Objectifs of 802.11ax Increase the performance of the Wi-Fi network by a factor of 4 while improving or not impacting power requirements Provide power saving mechanisms for new emerging IoT devices All the current power saving mechanisms defined today remain usable with ax. In addition, the 802.11ax draft defines a new mechanism...

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CTS 163: Cisco 802.11ax APs & Cisco Live

Cisco Live We have an episode full of Cisco goodness. Recently, Cisco released the data sheets to two 802.11ax access points. We have the details on these two APs, their capabilities, and some of our opinions. And speaking of Cisco, right around the corner is Cisco Live. We have our tips and the sessions we’re...

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CTS 162: 802.11ax OFDMA Subcarriers

With OFDMA in 802.11ax, the size of the subcarriers has been divided by 4. Going from 312.5KHz wide with OFDM to 78.125KHz wide. The symbol duration has been increased by 4 times in the meantime. Going from 3.2 microseconds with OFDM to 12.8 microseconds. View the full image here Advantages of having more subcarriers Allow...

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