There are six control frame subtypes they are:

• Power Save-Poll (PS-Poll): This frame is sent by any station to the station that includes the AP (access point). Its purpose is to request that the AP transmit a frame that has been buffered for this station while the station was in powersaving mode.

• Request to Send (RTS): This is the first frame in the four-way frame exchange discussed under the subsection on reliable data delivery. The station sending this message is alerting a potential destination, and all other stations within reception range, that it intends to send a data frame to that destination.

• Clear to Send (CTS): This is the second frame in the four-way exchange. It is sent by the destination station to the source station to grant permission to send a data frame.

• Acknowledgment: Provides an acknowledgment from the destination to the source that the immediately preceding data, management, or PS-Poll frame was received correctly.

• Contention-Free (CF)-End: Announces the end of a contention-free period that is part of the point coordination function.

• CF-End + CF-Ack: Acknowledges the CF-end.This frame ends the contention free period and releases stations from the restrictions associated with that period.