HE-STF

Short training, at twice the length of the single-user field.

Reading a capture

Eight microseconds against the SU format's four, and the reason is physical rather than protocol: the receiver is settling its gain across several transmitters at different distances arriving at once, which takes longer than settling for one.

Where it sits

HE TB PPDU > HE-STF

• Open in the explorer — TCP over IPv4, in a protected QoS Data frame, aggregated
• Open in the explorer — Compressed Block Ack
• Open in the explorer — Four-way handshake message 1
• Open in the explorer — Four-way handshake message 2
• Open in the explorer — Four-way handshake message 3
• Open in the explorer — Four-way handshake message 4
• Open in the explorer — ARP request in a QoS Data frame
• Open in the explorer — ICMP echo over IPv4, in a QoS Data frame
• Open in the explorer — UDP over IPv6, in a QoS Data frame
• Open in the explorer — TCP over IPv4, in a protected QoS Data frame
• Open in the explorer — TCP over IPv4, in an open QoS Data frame
• Open in the explorer — UDP over IPv4, in a QoS Data frame

Accuracy

Clause

802.11-2024 §27.3.12.5

Verified

Not verified against the standard. Treat this as a claim, not a fact.