definitions- 26

phased-coexistence-operation-capable (PCO-capable) station (STA): A STA that is either a PCO
capable access point (AP) or a PCO capable non-AP STA.
phased coexistence operation (PCO) inactive basic service set (BSS): A 20/40 MHz BSS in which an
access point (AP) has the PCO Active field in the HT Operation element equal to 0.
power save multi-poll (PSMP): A mechanism that provides a time schedule that is used by an access point
(AP) and its stations (STAs) to access the wireless medium. The mechanism is controlled using the PSMP
frame.
power save multi-poll (PSMP) burst: A series of one or more PSMP sequences, separated by short
interframe space (SIFS).
power save multi-poll downlink transmission time (PSMP-DTT): A period of time described by a PSMP
frame during which the access point (AP) transmits.
power save multi-poll (PSMP) sequence: A sequence of frames where the first frame is a PSMP frame that
is followed by transmissions in zero or more power save multi-poll downlink transmission times (PSMPDTTs)
and then by transmissions in zero or more power save multi-poll uplink transmission times (PSMPUTTs).
The schedule of the PSMP-DTTs and PSMP-UTTs is defined in the PSMP frame.
power save multi-poll (PSMP) session: The periodic generation of a PSMP burst aligned to its service
period (SP).
power save multi-poll uplink transmission time (PSMP-UTT): A period of time described by a PSMP
frame during which a non-access-point (non-AP) station (STA) can transmit.
power save multi-poll uplink transmission time (PSMP-UTT) spacing (PUS): The period of time
between the end of one PSMP-UTT and the start of the following PSMP-UTT within the same PSMP
sequence.
pre-robust security network association (pre-RSNA): The type of association used by a pair of stations
(STAs) if the procedure for establishing authentication or association between them did not include the 4-
Way Handshake.
pre-robust security network association (pre-RSNA) equipment: A device that is not able to create
robust security network associations (RSNAs).
Protected Dual of Public Action frame: An Action frame with the category value specified in 8.4.1.11
Table 8-38. For each Protected Dual of Public Action frame, there is a dual Action frame in a category that
is specified with “No” in the “Robust” column of Table 8-38.
quality-of-service (QoS) frame: A frame containing the QoS control field.
reverse direction (RD) initiator: A station (STA) that is a transmit opportunity (TXOP) holder that
transmits a medium access control (MAC) protocol data unit (MPDU) in which the RDG/More PPDU
subfield is equal to 1.
reverse direction (RD) responder: A station (STA) that is not the RD initiator and whose medium access
control (MAC) address matches the value of the Address 1 field of a received MAC protocol data unit
(MPDU) in which the RDG/More PPDU subfield is equal to 1.