Fast PSP (Power Save Protocol / Power Save Mode)
Fast Power Save Protocol (Power Save Mode) is recommended for devices where
power consumption is a major concern, such as small battery powered devices. It
causes the Access Point to buffer incoming messages for the Wireless LAN Adapter
card, which must wake up periodically and poll the Access Point to see if
there are any buffered messages waiting for it. Fast PSP mode switches between PSP
and CAM based on network traffic. When receiving a large number of packets,
Fast PSP Mode will temporarily switch to CAM mode to retrieve the packets. Once
the packets are retrieved, it switches back to PSP mode.