Generating representative Web workloads for network and server performance evaluation
SIGMETRICS '98/PERFORMANCE '98 Proceedings of the 1998 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
Runtime Optimization of IEEE 802.11 Wireless LANs Performance
IEEE Transactions on Parallel and Distributed Systems
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
WiNTECH '06 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization
Throughput analysis and optimal configuration of 802.11e EDCA
Computer Networks: The International Journal of Computer and Telecommunications Networking
Design and implementation of an enhanced 802.11 MAC architecture for single-hop wireless networks
EURASIP Journal on Wireless Communications and Networking
Experience with an implementation of the Idle Sense wireless access method
CoNEXT '07 Proceedings of the 2007 ACM CoNEXT conference
Distributed optimal contention window control for elastic traffic in single-cell wireless LANs
IEEE/ACM Transactions on Networking (TON)
CUBIC: a new TCP-friendly high-speed TCP variant
ACM SIGOPS Operating Systems Review - Research and developments in the Linux kernel
IEEE/ACM Transactions on Networking (TON)
A Control Theoretic Approach for Throughput Optimization in IEEE 802.11e EDCA WLANs
Mobile Networks and Applications
FloorNet: deployment and evaluation of a multihop wireless 802.11 testbed
EURASIP Journal on Wireless Communications and Networking - Special issue on simulators and experimental testbeds design and development for wireless networks
Random access game and medium access control design
IEEE/ACM Transactions on Networking (TON)
A Control-Theoretic Approach to Distributed Optimal Configuration of 802.11 WLANs
IEEE Transactions on Mobile Computing
A control theoretic scheme for efficient video transmission over IEEE 802.11e EDCA WLANs
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
IEEE 802.11 protocol: design and performance evaluation of an adaptive backoff mechanism
IEEE Journal on Selected Areas in Communications
| Hi-index | 0.00 |
In 802.11 WLANs, adapting the contention parameters to network conditions results in substantial performance improvements. Even though the ability to change these parameters has been available in standard devices for years, so far no adaptive mechanism using this functionality has been validated in a realistic deployment. In this paper we report our experiences with implementing and evaluating two adaptive algorithms based on control theory, one centralized and one distributed, in a large-scale testbed consisting of 18 commercial off-the-shelf devices. We conduct extensive measurements, considering different network conditions in terms of number of active nodes, link qualities, and data traffic. We show that both algorithms significantly outperform the standard configuration in terms of total throughput. We also identify the limitations inherent in distributed schemes, and demonstrate that the centralized approach substantially improves performance under a large variety of scenarios, which confirms its suitability for real deployments.