Design and Evaluation of a Feedback Control EDF Scheduling Algorithm
RTSS '99 Proceedings of the 20th IEEE Real-Time Systems Symposium
Ensuring the QoS requirements in 802.16 scheduling
Proceedings of the 9th ACM international symposium on Modeling analysis and simulation of wireless and mobile systems
IEEE 802.16 based last mile broadband wireless military networks with quality of service support
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume II
Providing quality of service over a shared wireless link
IEEE Communications Magazine
Statistical analysis and simulation study of video teleconference traffic in ATM networks
IEEE Transactions on Circuits and Systems for Video Technology
Realtime traffic scheduling for missed deadlines minimization in point-to-multipoint OFDMA systems
Proceedings of the 5th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Utility based video scheduling for quality maximization in 4G WiMAX wireless networks
Proceedings of the 1st International Conference on Wireless Technologies for Humanitarian Relief
A slot-based BS scheduling with maximum latency guarantee and capacity first in 802.16e networks
International Journal of Communication Systems
Wireless Personal Communications: An International Journal
Journal of Network and Computer Applications
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The mobile WiMAX systems based on IEEE 802.16e-2005 provide high data rate for mobile wireless networks. However, the link quality is frequently unstable owing to mobility and air interference and therefore impacts the latency requirement of real-time applications. In the WiMAX standard, the modulation/coding scheme and the boundary of uplink/downlink sub-frames could be adjusted subject to channel quality and the traffic volume, respectively. This provides us a chance to design a MAC-layer uplink/downlink bandwidth allocation algorithm that is QoS/PHY-aware. This work takes into account the adaptive modulation and coding scheme (MCS), uplink and downlink traffic volume, and QoS parameters of all five defined service classes to design a bandwidth allocation algorithm that calculates the slot allocation in two phases. The first phase decides the boundary of uplink and downlink sub-frames by satisfying requests with pending latency violation and proportionating according to traffic volume, while the second phase allocates slots to mobile stations considering urgency, priority and fairness. Simulation results show our algorithm achieves zero latency violation and higher system throughput compared to existing non-QoS/PHY-aware or less-QoS/PHY-aware approaches.