SWRU423A July 2015 – May 2016 WL1801MOD , WL1805MOD , WL1807MOD , WL1831MOD , WL1835MOD , WL1837MOD
In this mode, when the STA detects that the AP has data for it in the beacon frame, it sends a trigger packet named PS-POLL to the AP. In response, the AP sends the first queued frame to the STA; if the More Data field in this frame is on, it sends another PS-POLL frame to the AP. The STA continues to send PS-POLL frames to receive all the queued frames, until there are no data packets left. After this, the station returns to sleep until the next listening interval.
This method is suitable for very low data usage, as it is not efficient enough to pull each single packet.