Model predictive control: theory and practice—a survey
Automatica (Journal of IFAC)
Stack-based scheduling for realtime processes
Real-Time Systems
Fair scheduling in wireless packet networks
IEEE/ACM Transactions on Networking (TON)
Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
A Service Discipline for Support of IP QoS in IEEE 802.11 Networks
PWC '01 Proceedings of the IFIP TC6/WG6.8 Working Conference on Emerging Personal Wireless Communications
FHCF: a simple and efficient scheduling scheme for IEEE 802.11e wireless LAN
Mobile Networks and Applications
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
Feedback-based control for providing real-time services with the 802.11e MAC
IEEE/ACM Transactions on Networking (TON)
Analysis of Different Scheduling Strategies in 802.11e Networks with Multi-Class Traffic
LCN '07 Proceedings of the 32nd IEEE Conference on Local Computer Networks
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part IV: ICCS 2007
Performance evaluation of real-time schedulers for HCCA function in IEEE 802.11e wireless networks
Proceedings of the 4th ACM symposium on QoS and security for wireless and mobile networks
W-CBS: a scheduling algorithm for supporting QoS in IEEE 802.11e
The Fourth International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness & Workshops
An overview of scheduling algorithms in wireless multimedia networks
IEEE Wireless Communications
A scheduling algorithm for QoS support in IEEE802.11 networks
IEEE Wireless Communications
ARROW: An Efficient Traffic Scheduling Algorithm for IEEE 802.11e HCCA
IEEE Transactions on Wireless Communications
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
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The IEEE 802.11e standard introduces Quality of Service (QoS) support for wireless local area networks and suggests how to design a tailored HCF Controlled Channel Access (HCCA) scheduler. However the reference scheduling algorithm is suitable to assure service guarantees only for Constant Bit Rate traffic streams, whereas shows its limits for Variable Bit Rate traffic. Despite the numerous alternative schedulers proposed to improve the QoS support for multimedia applications, in the case of VBR traffic satisfactory real-time performance has not been yet achieved. This paper presents a new scheduling algorithm, Unused Time Shifting Scheduler (UTSS). It integrates a mechanism for bandwidth reclaiming into a HCCA real-time scheduler. UTSS assigns the unused portion of each transmission opportunity to the next scheduled traffic stream. Thanks to such feature, traffic variability is absorbed, reducing the waste of resources. The analytical evaluation, corroborated by the simulation results, shows that UTSS is suitable to reduce the delay experienced by VBR traffic streams and to increase the maximum burstiness sustainable by the network.