Power Saving Mechanisms in IEEE 802.11u 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 802.11u define new power saving mechanisms?** No, 802.11u primarily focuses on network interworking and does not introduce new power saving methods. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11u impact power saving in Wi-Fi devices?** By enabling efficient network selection and roaming, 802.11u helps devices reduce time spent searching and associating, saving power indirectly. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are traditional power saving features like Power Save Mode (PSM) still applicable in 802.11u?** Yes, traditional MAC-layer power saving mechanisms such as PSM remain fundamental for energy efficiency. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11u support enhanced mechanisms for devices in public networks to save power?** Indirectly, yes—by enabling devices to discover and select appropriate networks quickly, reducing unnecessary active scanning. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **What role do Access Network Query Protocol (ANQP) features in 802.11u play in power saving?** ANQP helps devices query network capabilities efficiently, minimizing repeated scans and preserving battery life. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can 802.11u improve power saving during roaming?** Yes, by enabling faster and seamless roaming, devices spend less time and energy negotiating new connections. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Is power saving coordinated between client and AP in 802.11u?** Power saving coordination remains managed by underlying 802.11 standards; 802.11u adds network selection features but not direct power management protocols. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11u interact with IEEE 802.11e (QoS) for power saving?** While related, 802.11u focuses on interworking; QoS-related power saving features are handled primarily by 802.11e. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11u help reduce power consumption in dense network environments?** By providing better network information and selection options, it reduces the need for frequent scans and associations, saving energy. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11u require hardware changes to support power saving?** No, it utilizes existing hardware capabilities defined by base 802.11 standards. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Can 802.11u's interworking with cellular networks aid power saving?** Yes, by facilitating smooth handoffs between Wi-Fi and cellular, devices can manage connections more efficiently, conserving battery. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Is power saving considered in the 802.11u Access Network Discovery and Selection Function (ANDSF)?** ANDSF policies can help devices connect to the best network quickly, indirectly contributing to power efficiency. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are multicast or broadcast power saving improvements part of 802.11u?** No direct changes; these remain under traditional 802.11 power save protocols. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11u address power saving in mesh or ad-hoc networks?** No, it mainly targets infrastructure networks and interworking, not mesh-specific power features. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **How does 802.11u influence scanning behavior for power saving?** By providing network info via ANQP, devices can avoid unnecessary active scans, conserving power. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Does 802.11u provide mechanisms to prioritize power saving during network selection?** It supports network selection policies that can factor power efficiency among selection criteria. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Are power saving states like doze or sleep managed by 802.11u?** No, these are managed by underlying 802.11 power management protocols. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow **Where can I find more details on power saving in 802.11u?** Refer to the IEEE 802.11u amendment documentation and related base 802.11 standards for comprehensive power saving mechanisms. .. panels:: :container: container pb-4 :column: col-lg-12 p-2 :card: shadow Topics in this section, * :ref:`Reference links ` .. _power_save_u_step17: .. tab-set:: .. tab-item:: Reference links * Reference links