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WMM®-Power Save

 

WMM® Power Save is a set of features for Wi-Fi networks that help conserve battery power in small devices such as phones, PDAs, and audio players. The certification for both access points and client devices uses mechanisms from the recently ratified IEEE 802.11e standard, and is an enhancement of legacy 802.11 power save. WMM Power Save helps pave the way for rapid proliferation of Wi-Fi technology into devices dependent on battery power.

With WMM Power Save, the same amount of data can be transmitted in a shorter time while allowing the Wi-Fi device to remain longer in a low-power "dozing" state. With improved sleep capabilities in the chip and the opportunity to fine-tune power consumption at the application layer, device manufacturers and developers now have a robust framework to improve Wi-Fi power efficiency.

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