Power Saving Mechanisms in IEEE 802.11i protocol
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        **What power saving mechanisms does IEEE 802.11i support?**

        802.11i supports Power Save Mode (PSM) and Unscheduled Automatic Power Save Delivery (U-APSD) to conserve client device energy.

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        **How does 802.11i ensure security while devices are in power save mode?**

        Security keys and protocols remain active, with buffered encrypted data delivered upon wake-up.

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        **What is U-APSD in 802.11i power saving?**

        Unscheduled Automatic Power Save Delivery allows devices to trigger delivery of buffered frames efficiently with QoS support.

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        **Does 802.11i power saving affect the security handshake?**

        The handshake remains secure; power saving states are negotiated without compromising security.

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        **How are multicast and broadcast frames handled during power saving?**

        Delivery Traffic Indication Messages (DTIM) notify clients about buffered multicast/broadcast frames securely.

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        **Are power save features compatible with 802.11i encryption?**

        Yes, power saving and encryption operate seamlessly together.

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        **How does 802.11i protect buffered frames in access points?**

        Buffered frames are stored encrypted and delivered only to authorized clients upon wake.

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        **Can 802.11i devices enter sleep state during active security sessions?**

        Yes, sleep states are supported while maintaining active security associations.

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        **What role does the TIM (Traffic Indication Map) play in power saving?**

        TIM indicates which clients have buffered data, enabling power-efficient wake-ups.

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        **Is power saving effective in all traffic conditions under 802.11i?**

        It is most effective with bursty traffic; continuous high traffic may reduce power saving gains.

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        **Do power saving modes introduce latency in secure communications?**

        Minor latency can occur due to wake-up delays but is balanced against energy savings.

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        **How does 802.11i support battery life in mobile devices?**

        By combining efficient power save modes with strong security protocols, battery life is optimized.

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        **Are power saving features configurable in 802.11i devices?**

        Yes, devices can enable or disable power saving modes based on use cases.

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        **Does 802.11i support legacy power save mechanisms?**

        It is backward compatible with standard 802.11 power save modes while enhancing security.

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        **How are power saving timers managed with secure frames?**

        Timers coordinate wake/sleep cycles while ensuring secure frame delivery synchronization.

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        **What happens if a device misses buffered frames during sleep?**

        Retransmission and buffering ensure no loss of secured frames upon next wake.

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        **Is there a power saving impact on throughput in 802.11i?**

        Some throughput reduction may occur, but energy savings are generally worth the tradeoff.

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        **How does 802.11i handle power saving in mesh networks?**

        Power saving is coordinated with security protocols in mesh topologies to maintain performance.


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        Topics in this section,

                * :ref:`Reference links <power_save_i_step17>`

.. _power_save_i_step17:

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    .. tab-item:: Reference links
     
       * Reference links