Bit Field Guide

Multi-TID

MAC 1 bit Compressed Block Ack unverified

Set when one frame acknowledges several traffic classes at once.

Where it sits

Compressed Block Ack MPDU > BA Control > Multi-TID

Open in the explorer — Compressed Block Ack

Accuracy

Clause: 802.11-2024 §9.3.1.9.2
Verified: Not verified against the standard. Treat this as a claim, not a fact.