Minimizing energy for wireless web access with bounded slowdown
Proceedings of the 8th annual international conference on Mobile computing and networking
Scheduling of Offset Free Systems
Real-Time Systems
Real Time Scheduling Theory: A Historical Perspective
Real-Time Systems
FHCF: a simple and efficient scheduling scheme for IEEE 802.11e wireless LAN
Mobile Networks and Applications
On distributed power saving mechanisms of wireless LANs 802.11e U-APSD vs 802.11 power save mode
Computer Networks: The International Journal of Computer and Telecommunications Networking
An Equal-Spacing-Based Design for QoS Guarantee in IEEE 802.11e HCCA Wireless Networks
IEEE Transactions on Mobile Computing
IEEE 802.11 E QoS and power saving features overview and analysis of combined performance
IEEE Wireless Communications
A scheduling algorithm for QoS support in IEEE802.11 networks
IEEE Wireless Communications
Analysis of IEEE 802.11e for QoS support in wireless LANs
IEEE Wireless Communications
MPEG-4 and H.263 video traces for network performance evaluation
IEEE Network: The Magazine of Global Internetworking
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Wireless LAN is becoming a pervasive wireless access technology that can be found in almost any mobile device such as laptops, PDAs, portable game consoles and mobile phones. Each of these groups of devices have a different set of requirements according to their intended use and applications but most of them share two main requirements: QoS support to satisfy applications' demands and power saving functionality to achieve an operating time according to users' expectations. IEEE 802.11e defines two centralized solutions in order to address these problems: Hybrid Coordination Channel Access (HCCA) for QoS and Scheduled Automatic Power Save Delivery (S-APSD) for power saving. The focus of our work in this paper is the analysis and evaluation of a proposed centralized scheduler that makes use of both aforementioned IEEE 802.11e QoS and power saving solutions. Our contributions are as follows: (i) Design and analytical modeling of a proposed centralized scheduler (DRA) that maximizes the minimum distance between the resource allocations with pseudo-polynomial complexity, (ii) Extensive performance evaluation of the QoS and power saving benefits of the Distribution proposal (DRA) as compared to a generic Grouping one (GRA), and (iii) Evaluation of the complexity and scalability of the proposal to assess its feasibility in practice. Copyright © 2010 John Wiley & Sons, Ltd.