Introduces the fundamentals of power save delivery, then guides users through configuring Power Save (U-APSD) using CLI to optimize wireless device energy efficiency.
Unscheduled automatic power save delivery (U-APSD) is a power-saving mechanism that
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is defined as a QoS facility in IEEE 802.11e standards
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delivers multiple downlink packets in response to a single uplink trigger, and
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reduces wireless latency and extends mobile device battery life
Additional information
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U-APSD activates automatically when WMM (Wi-Fi Multimedia) is enabled.
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U-APSD eliminates the need for polling individual packets at the access point.
Possible sequence for U-APSD operation:
A client device sends a single uplink trigger packet. In response, the access point delivers multiple queued downlink packets based on that single trigger.