Block Ack Starting Sequence Control SSC

The sequence number the bitmap starts counting from.

Reading a capture

The bitmap has no addresses in it — bit zero means "the frame with this sequence number", bit one means the next, and so on. Without this field the bitmap says nothing at all.

Subfields

• Starting Sequence Number — The sequence number corresponding to bit zero of the bitmap.

Where it sits

Compressed Block Ack MPDU > Block Ack Starting Sequence Control

• Open in the explorer — Compressed Block Ack

Accuracy

Clause

802.11-2024 §9.3.1.9.3

Byte order

little-endian — least significant octet first

Verified

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