Choosing beacon periods to improve response times for wireless HTTP clients
Proceedings of the second international workshop on Mobility management & wireless access protocols
Energy efficient schedulers in wireless networks: design and optimization
Mobile Networks and Applications
Minimizing energy for wireless web access with bounded slowdown
Wireless Networks
802.11 Wireless Networks: The Definitive Guide, Second Edition
802.11 Wireless Networks: The Definitive Guide, Second Edition
Reducing network energy consumption via sleeping and rate-adaptation
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
A power-saving scheduling for infrastructure-mode 802.11 wireless LANs
Computer Communications
NAPman: network-assisted power management for wifi devices
Proceedings of the 8th international conference on Mobile systems, applications, and services
Journal of Systems and Software
Diadem: Prefetch-Based Traffic Shaping for Energy Saving in Wireless Networks
GREENCOM '11 Proceedings of the 2011 IEEE/ACM International Conference on Green Computing and Communications
Snooze: energy management in 802.11n WLANs
Proceedings of the Seventh COnference on emerging Networking EXperiments and Technologies
Enhancing the performance of TCP over Wi-Fi power saving mechanisms
Wireless Networks
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Energy management in a wireless LAN is an important problem, as the viability of wireless devices depends very much on their battery life. In this paper, we propose a centralized power saving mode (C-PSM), an AP-centric PSM for 802.11 infrastructure networks. Having the AP select optimal PSM parameters, such as the beacon and listen intervals, CPSM is able to maximize the total energy efficiency for all clients. Moreover, C-PSM provides a first-wake-up schedule to further increase the energy efficiency by reducing clients' simultaneous wake-ups. Extensive simulation experiments show that C-PSM outperforms the standard PSM by a very significant margin. In our set of experiments, C-PSM reduces power consumption and increases energy efficiency by as much as 76% and 320%, respectively. As a side benefit, C-PSM also decreases the frame buffering delay at the AP by 88%. The wake-up schedule can save clients' energy consumption by 22% at most. Moreover, the improvement increases with the number of clients.