Discrete-Time Models for Communication Systems Including ATM
Discrete-Time Models for Communication Systems Including ATM
Performance Evaluation of the IEEE 802.16 MAC for QoS Support
IEEE Transactions on Mobile Computing
Introduction to Probability Models, Ninth Edition
Introduction to Probability Models, Ninth Edition
Scheduling solution for the IEEE 802.16 base station
Computer Networks: The International Journal of Computer and Telecommunications Networking
An alternative QoS architecture for the IEEE 802.16 standard
CoNEXT '06 Proceedings of the 2006 ACM CoNEXT conference
Markov chain analysis of uplink subframe in polling-based WiMAX networks
Computer Communications
Dual-threshold admission control for non-real-time traffic in wireless data networks
Computer Communications
QEST '08 Proceedings of the 2008 Fifth International Conference on Quantitative Evaluation of Systems
Impact of bandwidth request schemes for Best-Effort traffic in IEEE 802.16 networks
Computer Communications
Delay constrained uplink scheduling policy for rtPS-ertPS service in IEEE 802.16e BWA systems
International Journal of Communication Systems
Power-saving scheduling with a QoS guarantee in a mobile WiMAX system
Journal of Network and Computer Applications
A fair optimization scheduling scheme for IEEE 802.16 networks in multimedia applications
Journal of Visual Communication and Image Representation
Discrete-time modeling for performance analysis of real-time services in IEEE 802.16 networks
Computer Communications
Traffic-aware connection admission control scheme for broadband mobile systems
IEEE Communications Letters
Queueing analysis of polled service classes in the IEEE 802.16 MAC protocol
IEEE Transactions on Wireless Communications
Journal of Network and Computer Applications
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Among the scheduling services, rtPS (real-time polling service) is designated for real-time applications. Among three packet delay intervals, performance effect on polling interval has been widely studied, but less on the intervals of scheduling and delivery. To evaluate the performance of delay-sensitive rtPS applications, instead of using continuous queueing model, a discrete-time GI-G-1 model, which considers intervals of polling, scheduling, and delivery, is proposed. By taking VoIP as a typical rtPS application, the transmission latency under different QoS settings, polling probability, and traffic load are presented. The latency is also compared among various codec schemes. The results indicate that when the codec rate is either fulfilled or dissatisfied by the promised bandwidth of service levels, the performance is highly dependent upon the polling probability, no matter what the traffic condition is. However, if the codec rate is in between the promised bandwidth of various service levels, the polling probability is a dominant factor in light traffic environment, while the settings on QoS parameters will strongly determine the performance in heavy traffic situation. In addition to the verification using simulation, the bandwidth utilization derived from the GI-G-1 model can be applied to improve the serving capacity of base stations. Copyright © 2011 John Wiley & Sons, Ltd.