In Wireshark version 3.2.1 for Windows, there is a field where the value of the Rate and the Length subfield from the Legacy Signal field in the Physical header is shown for 802.11ax aggregated frames

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Let us use this and have some fun.

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802.11 Frame Aggregation is the technology in WiFi that enables the sender/transmitter to “pack” together several frames and send them in one frame transmission, a TXOP.

I will in this case study drill down in a frame capture and interpret the different parts of an 802.11ax aggregated frame transmission, both a single-user transmission (OFDM) and a multi-user transmission (OFDMA).

The wireless capture I use in this case study contains two-level aggregation, where A-MSDU is sent inside an A-MPDU.
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