Given: As defined in the 802.11 specification, legacy Power Save requires an inefficient back- and- forth frame exchange process. Due to this inefficiency, many WLAN device implementations use a…

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Options

• AClient devices ignore the TIM field and automatically send PS-Poll frames after every beacon.
• BAfter each beacon, the AP attempts to empty its frame buffer by sending Wake-on-WLAN frames to
• CRequest-to-Send and Clear-to-Send frame exchanges are used to trigger the delivery of buffered data.
• DThe Beacon interval is changed from the default 100 time units to 10 or less time units.
• EClients send null data frames to the AP and switch the power management bit from 1 to 0 to receive
• FStations send a CTS-to-self frame to the AP with a very long duration period so they can receive all

• A
  5% (2)
• C
  3% (1)
• D
  14% (5)
• E
  76% (28)
• F
  3% (1)

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