A framework for robust measurement-based admission control
IEEE/ACM Transactions on Networking (TON)
Computer Controlled Systems: Theory and Design
Computer Controlled Systems: Theory and Design
Quality of service schemes for IEEE 802.11 wireless LANs: an evaluation
Mobile Networks and Applications
A survey of QoS enhancements for IEEE 802.11 wireless LAN: Research Articles
Wireless Communications & Mobile Computing
FHCF: a simple and efficient scheduling scheme for IEEE 802.11e wireless LAN
Mobile Networks and Applications
Distributed mechanisms for quality of service in wireless LANs
IEEE Wireless Communications
A scheduling algorithm for QoS support in IEEE802.11 networks
IEEE Wireless Communications
Congestion control in high-speed communication networks using the Smith principle
Automatica (Journal of IFAC)
An efficient multipolling mechanism for IEEE 802.11 wireless LANs
IEEE Transactions on Computers
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Performance analysis of IEEE 802.11e contention-based channel access
IEEE Journal on Selected Areas in Communications
Extended EDCA for providing bounded delay services in 802.11e WLANs
Proceedings of the 9th ACM international symposium on Modeling analysis and simulation of wireless and mobile systems
A dynamic bandwidth allocation algorithm for supporting real-time applications in 802.15.3 wpans
Proceedings of the 3rd ACM workshop on QoS and security for wireless and mobile networks
Wireless channel access reservation for embedded real-time systems
EMSOFT '08 Proceedings of the 8th ACM international conference on Embedded software
Extended EDCA for delay guarantees in wireless local area networks
Pervasive and Mobile Computing
Channel access throttling for improving WLAN QoS
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
On the effectiveness of IEEE 802.11e implementations in real hardware
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
A simulation-based performance evaluation of wireless networked control systems
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Evaluation of real-time communication performance in QoS-enabled infrastructure WLANs
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Orthogonal signaling-based queue status investigation method in IEEE 802.11
Computer Communications
DyDAP: A dynamic data aggregation scheme for privacy aware wireless sensor networks
Journal of Systems and Software
A greedy reclaiming scheduler for IEEE 802.11e HCCA real-time networks
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
QoS in Wireless LAN: A comparison between feedback-based and earliest due-date approaches
Computer Communications
A control theoretic scheme for efficient video transmission over IEEE 802.11e EDCA WLANs
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
A Simple Analytical Model for Expected Frame Waiting Time Evaluation in IEEE 802.11e HCCA Mode
Wireless Personal Communications: An International Journal
Dynamic resource allocation for MCCA-Based streaming in wi-fi mesh networks
WiFlex'13 Proceedings of the First international conference on Wireless Access Flexibility
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The 802.11e working group has recently proposed the hybrid coordination function (HCF) to provide service differentiation for supporting real-time transmissions over 802.11 WLANs. The HCF is made of a contention-based channel access, known as enhanced distributed coordination access, and of a HCF controlled channel access (HCCA), which requires a Hybrid Coordinator for bandwidth allocation to nodes hosting applications with QoS requirements. The 802.11e proposal includes a simple scheduler providing a Constant Bit Rate service, which is not well suited for bursty media flows. This paper proposes two feedback-based bandwidth allocation algorithms to be used within the HCCA, which have been referred to as feedback based dynamic scheduler (FBDS) and proportional-integral (PI)-FBDS. These algorithms have been designed with the objective of providing services with bounded delays. Given that the 802.11e standard allows queue lengths to be fed back, a control theoretic approach has been employed to design the FBDS, which exploits a simple proportional controller, and the PI-FBDS, which implements a proportional-integral controller. Proposed algorithms can be easily implemented since their computational complexities scale linearly with the number of traffic streams. Moreover, a call admission control scheme has been proposed as an extension of the one described in the 802.11e draft. Performance of the proposed algorithms have been theoretically analyzed and computer simulations, using the ns-2 simulator, have been carried out to compare their behaviors in realistic scenarios where video, voice, and FTP flows, coexist at various network loads. Simulation results have shown that, unlike the simple scheduler of the 802.11e draft, both FBDS and PI-FBDS are able to provide services with real-time constraints. However, while the FBDS admits a smaller quota of traffic streams than the simple scheduler, PI-FBDS allows the same quota of traffic that would be admitted using the simple scheduler, but still providing delay bound guarantees.