Idle sense: an optimal access method for high throughput and fairness in rate diverse wireless LANs
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Throughput analysis and optimal configuration of 802.11e EDCA
Computer Networks: The International Journal of Computer and Telecommunications Networking
WNS2 '06 Proceeding from the 2006 workshop on ns-2: the IP network simulator
Hybrid polling and contention access scheduling in IEEE 802.11e WLANs
Journal of Parallel and Distributed Computing
An analytic study of tuning systems parameters in IEEE 802.11e enhanced distributed channel access
Computer Networks: The International Journal of Computer and Telecommunications Networking
Design and performance analysis of the Real-Time HCCA scheduler for IEEE 802.11e WLANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
Bandwidth Sharing Schemes for Multimedia Traffic in the IEEE 802.11e Contention-Based WLANs
IEEE Transactions on Mobile Computing
Feedback-based control for providing real-time services with the 802.11e MAC
IEEE/ACM Transactions on Networking (TON)
LCN '07 Proceedings of the 32nd IEEE Conference on Local Computer Networks
Performance analysis for IEEE 802.11e EDCF service differentiation
IEEE Transactions on Wireless Communications
ARROW: An Efficient Traffic Scheduling Algorithm for IEEE 802.11e HCCA
IEEE Transactions on Wireless Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Optimized transmission of JPEG2000 streams over wireless channels
IEEE Transactions on Image Processing
IEEE Network: The Magazine of Global Internetworking
Applications and challenges of the 802.11e EDCA mechanism: an experimental study
IEEE Network: The Magazine of Global Internetworking
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The de facto QoS channel access method for the IEEE 802.11 Wireless LANs is the Enhanced Distributed Channel Access (EDCA) mechanism, which differentiates transmission treatments for data frames belonging to different traffic categories with four different levels of channel access priority. In this paper, we propose extending EDCA with Channel Access Throttling (CAT) for more flexible and efficient QoS support. By assigning different member stations different channel access parameters, CAT differentiates channel access priorities not between traffic categories but between member stations. Then by dynamically changing the channel access parameters of each member station based on a pre-computed schedule, CAT enables EDCA WLANs the benefits of scheduled access QoS. We also present evaluation results of CAT obtained from both simulations and experiments conducted using off-the-shelf WLAN hardware and open-source device driver. Our results show that CAT can proportionally partition channel capacity, significantly improve performance of multimedia applications, effectively achieve performance protection for admitted flows, and increase per cell VoIP call capacity by up to 41%.