Computer-controlled systems: theory and design (2nd ed.)
Computer-controlled systems: theory and design (2nd ed.)
Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
Runtime Optimization of IEEE 802.11 Wireless LANs Performance
IEEE Transactions on Parallel and Distributed Systems
Performance evaluation of an adaptive backoff scheme for WLAN: Research Articles
Wireless Communications & Mobile Computing - Special Issue: Emerging WLAN Apllications and Technologies
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
Distributed optimal contention window control for elastic traffic in single-cell wireless LANs
IEEE/ACM Transactions on Networking (TON)
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
IEEE Network: The Magazine of Global Internetworking
A control theoretic framework for performance optimization of IEEE 802.11 networks
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Dynamic parameter adjustment in CSMA/ECA
MACOM'10 Proceedings of the Third international conference on Multiple access communications
A control theoretic scheme for efficient video transmission over IEEE 802.11e EDCA WLANs
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Control theoretic optimization of 802.11 WLANs: Implementation and experimental evaluation
Computer Networks: The International Journal of Computer and Telecommunications Networking
Kalman Filtering: Estimate of the numbers of active queues in an 802.11e EDCA WLAN
Computer Communications
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The MAC layer of the 802.11 standard, based on the CSMA/CA mechanism, specifies a set of parameters to control the aggressiveness of stations when trying to access the channel. However, these parameters are statically set independently of the conditions of the WLAN (e.g. the number of contending stations), leading to poor performance for most scenarios. To overcome this limitation previous work proposes to adapt the value of one of those parameters, namely the CW, based on an estimation of the conditions of the WLAN. However, these approaches suffer from two major drawbacks: i) they require extending the capabilities of standard devices or ii) are based on heuristics. In this paper we propose a control theoretic approach to adapt the CW to the conditions of the WLAN, based on an analytical model of its operation, that is fully compliant with the 802.11e standard. We use a Proportional Integrator controller in order to drive the WLAN to its optimal point of operation and perform a theoretic analysis to determine its configuration. We show by means of an exhaustive performance evaluation that our algorithm maximizes the total throughput of the WLAN and substantially outperforms previous standard-compliant proposals.