Minimizing energy for wireless web access with bounded slowdown
Proceedings of the 8th annual international conference on Mobile computing and networking
On distributed power saving mechanisms of wireless LANs 802.11e U-APSD vs 802.11 power save mode
Computer Networks: The International Journal of Computer and Telecommunications Networking
Capture Effect in the IEEE 802.11 WLANs with Rayleigh Fading, Shadowing, and Path Loss
WIMOB '06 Proceedings of the 2006 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications
Aggregation with fragment retransmission for very high-speed WLANs
IEEE/ACM Transactions on Networking (TON)
An adaptive solution for Wireless LAN distributed power saving modes
Computer Networks: The International Journal of Computer and Telecommunications Networking
A selective delayed channel access (SDCA) for the high-throughput IEEE 802.11n
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Energy-Efficient VoIP over Wireless LANs
IEEE Transactions on Mobile Computing
IEEE 802.11 E QoS and power saving features overview and analysis of combined performance
IEEE Wireless Communications
Analysis of IEEE 802.11e for QoS support in wireless LANs
IEEE Wireless Communications
IEEE 802.11n MAC frame aggregation mechanisms for next-generation high-throughput WLANs
IEEE Wireless Communications
IEEE Journal on Selected Areas in Communications
MPEG-4 and H.263 video traces for network performance evaluation
IEEE Network: The Magazine of Global Internetworking
Enhancing the performance of TCP over Wi-Fi power saving mechanisms
Wireless Networks
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The Wi-Fi technology, driven by its tremendous success, is expanding into a wide variety of devices and applications. However, many of these new devices, like handheld devices, pose new challenges in terms of QoS and energy efficiency. In order to address these challenges, in this paper we study how the novel MAC aggregation mechanisms developed in the 802.11n standard can be used to enhance the current 802.11 QoS and power saving protocols. Our contribution is twofold. First, we present a simulation study that illustrates the interactions between 802.11n and the current 802.11 QoS and power saving protocols. This study reveals that the 802.11n MAC aggregation mechanisms perform better when combined with the power save mode included in the original 802.11 standard than with the 802.11e U-APSD protocol. Second, we design CA-DFA, an algorithm that, using only information available at layer two, adapts the amount of 802.11n aggregation used by a Wi-Fi station according to the level of congestion in the network. A detailed performance evaluation demonstrates the benefits of CA-DFA in terms of QoS, energy efficiency and network capacity with respect to state of the art alternatives.