Context-dependent octet

TXOP Limit or AP PS Buffer State when sent by an AP; TXOP Duration Requested or Queue Size when sent by a client.

Reading a capture

A field whose meaning cannot be determined from its own bits. You need to know who transmitted the frame, which means reading Address 2 before you can decode this octet.

Where it sits

QoS Data MPDU > QoS Control > Context-dependent octet

• Open in the explorer — TCP over IPv4, in a protected QoS Data frame, aggregated
• 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 §9.2.4.5

Verified

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