Power Saving Mechanisms in IEEE 802.11g protocol
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        **What are power saving mechanisms in IEEE 802.11g?**

        Techniques that allow Wi-Fi devices to reduce energy consumption by entering low-power sleep states.

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        **How does Power Save Mode (PSM) function in 802.11g?**

        Devices alternate between awake and sleep states, waking periodically to check for buffered data.

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        **What role do beacon frames play in power saving?**

        Beacons inform sleeping devices about buffered unicast or multicast data using TIM and DTIM fields.

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        **What is the Traffic Indication Map (TIM)?**

        A field in beacon frames that indicates which stations have buffered unicast frames waiting.

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        **What is the Delivery Traffic Indication Message (DTIM)?**

        A special beacon interval that notifies clients about multicast or broadcast traffic delivery.

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        **How does the access point buffer data for sleeping stations?**

        It queues frames addressed to sleeping clients and delivers them when clients wake up.

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        **Can power saving increase latency?**

        Yes, since devices sleep, data delivery may be delayed until the client wakes.

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        **Is power saving mode mandatory for 802.11g devices?**

        No, it is optional but widely supported for battery-powered devices.

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        **How does power saving affect throughput?**

        It may reduce throughput due to sleep intervals and delayed frame delivery.

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        **What is the difference between TIM and DTIM intervals?**

        TIM is for unicast buffered frames; DTIM additionally signals multicast/broadcast.

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        **Can devices selectively disable power saving?**

        Yes, devices can turn off power saving to prioritize performance.

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        **Does power saving work with QoS features in 802.11g?**

        Basic power saving is compatible, though advanced QoS mechanisms may require specific support.

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        **How do clients know when to wake up from sleep?**

        They wake based on beacon intervals that indicate buffered data.

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        **Can power saving save battery in mobile devices?**

        Yes, it significantly extends battery life by reducing radio usage.

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        **Are power saving settings configurable?**

        Yes, users or device drivers can configure power saving behavior.

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        **How does the AP inform clients about multicast traffic?**

        Through DTIM beacon intervals signaling multicast data availability.

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        **Can power saving cause packet loss?**

        Generally no, but delayed reception can affect real-time apps.

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        **Does 802.11g power saving differ from 802.11a?**

        The concepts are similar but adapted for their respective PHY characteristics.

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        **What happens if a client misses a beacon?**

        The client may miss notifications of buffered data, requiring re-association or retransmissions.

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        **How do power saving and roaming interact?**

        Clients maintain power saving states during roaming to ensure battery efficiency.


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        Topics in this section,

                * :ref:`Reference links <power_save_g_step17>`


.. _power_save_g_step17:

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