Power Saving Mechanisms in IEEE 802.11ay protocol ================================================== .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does IEEE 802.11ay support power saving mechanisms?** Yes, 802.11ay enhances traditional power saving methods with improvements for directional communication and beamforming. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What types of power saving modes are supported in 802.11ay?** It supports legacy Power Save Mode (PSM), Unscheduled and Scheduled Service Periods, and Beamforming-Aware Power Save. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does directional communication affect power saving?** Beamformed links reduce idle listening and allow targeted wake-ups, improving energy efficiency. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Is Target Wake Time (TWT) used in 802.11ay?** Yes, 802.11ay leverages TWT to allow devices to sleep until scheduled transmissions, minimizing power use. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How do scheduled access periods support power efficiency?** Devices can enter sleep mode outside their allocated transmission periods, reducing unnecessary energy consumption. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is Beamforming-Aware Power Save in 802.11ay?** Devices can coordinate sleep cycles around beam training and transmission schedules for maximum energy savings. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can 802.11ay devices enter deep sleep states?** Yes, if there is no expected traffic, devices can enter deep sleep until their next scheduled wake-up. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11ay use DTIM or TIM like earlier standards?** Yes, similar mechanisms exist but are enhanced with directional awareness and scheduling granularity. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How is multicast handled in power save mode?** APs buffer multicast data and deliver it during designated Delivery Traffic Indication Message (DTIM) intervals. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Do all devices in a BSS follow the same power save schedule?** No, TWT enables per-device power save scheduling, allowing more flexibility and efficiency. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What challenges exist for power saving in 60 GHz band?** High path loss and beam alignment overhead make efficient scheduling and sleeping critical for power conservation. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Is there support for power save in Point-to-Multipoint topologies?** Yes, 802.11ay supports power saving coordination even in P2MP setups using sectorized scheduling. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can power save mechanisms be applied to high-throughput applications?** Yes, TWT and beam scheduling allow high-speed devices to sleep when idle, balancing performance and power. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does sleep signaling work in 802.11ay?** Devices indicate power save status through control frames and follow negotiated TWT schedules. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are there energy efficiency gains over 802.11ad?** Yes, 802.11ay introduces more advanced and flexible power saving mechanisms, particularly with TWT and beam control. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Do client devices need to support all power saving modes?** No, support depends on device capabilities and negotiated features with the AP. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What is the role of the AP in coordinating power save?** The AP manages buffered traffic, TWT schedules, and beamforming sessions to optimize network-wide power usage. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can TWT improve battery life in IoT devices?** Yes, especially for devices with predictable low-duty-cycle traffic, TWT significantly reduces energy use. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11ay balance performance and power save?** By enabling fine-grained scheduling, directional transmissions, and intelligent sleep strategies without sacrificing throughput. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow Topics in this section, * :ref:`Learnings in this section ` * :ref:`Terminology ` * :ref:`Version Info ` * :ref:`power_save Basic Setup on Ubuntu using IPv4 ` * :ref:`Reference links ` .. _power_save_step1: .. tab-set:: .. tab-item:: Learnings in this section * In this section, you are going to learn .. _power_save_step2: .. tab-set:: .. tab-item:: Terminology * Terminology .. _power_save_step3: .. tab-set:: .. tab-item:: Version Info * Version Info .. _power_save_step18: .. tab-set:: .. tab-item:: power_save Basic Setup on Ubuntu using IPv4 * setup .. _power_save_step17: .. tab-set:: .. tab-item:: Reference links * Reference links