802.11 frame types

The fields, in their order of appearance in transmission, are: The two-bit protocol version subfield is set to 0 for WLAN (PV0) and 1 for IEEE 802.11ah (PV1).

The revision level is incremented only when there is a fundamental incompatibility between two versions of the standard.

Some of the action categories are QoS, Block Ack, Public, Radio Measurement, Fast BSS Transition, Mesh Peering Management, etc.

Wi-Fi Neighbor Awareness Networking (NAN), also known as Wi-Fi Aware, service discovery frames are NAN-specific public action frames.

[5] ToDS is one bit in length and set to 1 if destined to Distribution System,[6] while FromDS is a one-bit length that is set to 1 if originated from Distribution System.