Stack-based scheduling for realtime processes
Real-Time Systems
Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
Integrating Multimedia Applications in Hard Real-Time Systems
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
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)
ACM SIGMOBILE Mobile Computing and Communications Review
User-level performance evaluation of VoIP using ns-2
Proceedings of the 2nd international conference on Performance evaluation methodologies and tools
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
Modified HCCA mechanism for improving QoS support in IEEE 802.11e networks
Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
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
MPEG-4 and H.263 video traces for network performance evaluation
IEEE Network: The Magazine of Global Internetworking
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
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
A new MAC scheme specifically suited for real-time industrial communication based on IEEE 802.11e
Computers and Electrical Engineering
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The IEEE 802.11e standard introduces Quality of Service support for wireless local area networks through two MAC functions: Enhanced Distributed Channel Access (EDCA) and HCF Controlled Channel Access (HCCA). While the former provides prioritized contention-based access to the medium, the latter uses a parameterized contention-free polling scheme. Several studies have proposed enhancements to EDCA or improved scheduling algorithms for HCCA to properly support VBR traffic. However, the cooperation between these functions has only marginally been considered and the solutions vary depending on specific traffic requirements. In this paper we propose a novel approach to address the problem of scheduling VBR traffic streams. Our scheduler, named Overboost, uses HCCA to negotiate a minimum bandwidth and deals with traffic streams that require more bandwidth than the negotiated one by redirecting the excess bandwidth to the EDCA function. An analytical evaluation has been conducted and the results has been corroborated by an extensive set of simulations. They show that the overall scheduler improves the performance with respect to other HCCA schedulers in terms of null rate, throughput, access delay, and queue length.