Understanding WLAN Power Save Mode
WLAN Power Save Wi-Fi has been adopted for a variety of devices addressing various use cases. Many of these applications require the devices to conserve power as much as possible. For example, mobile phones should reduce the total power used so that they can last from charge to charge. Maintaining a connection to the Access Point at all times and servicing consumer & enterprise applications over that link can run the battery down significantly. In order to reduce the issue of battery drain, IEEE introduced WLAN Power Save Mode as part of the 802.11 spec. Power Save Mode is an important feature for end users to save their battery power and use the device for extended hours. It allows the devices to switch between active and sleep states to conserve energy. Power Save Standards Power save is classified into two: Legacy Power Save Mode The client sends UL data and waits for some time. It indicates to the Access Point that it is going to be i...