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An Adaptive Cross-Layer Scheduling Algorithm for Multimedia Networks

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4 Author(s)
Xiuyuan Li ; Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan ; Xiaojuan Wu ; Wenming Li ; Xiaogang Wang

Nowadays wireless networks standards, e.g. IEEE 802.16, aim to accommodate diverse QoS requirements for multimedia users. The standard provided four kinds of multimedia data services, associated with QoS parameters and left the QoS scheduling algorithm undefined. In this paper, we propose an adaptive cross physical (PHY) layer and MAC layer scheduling algorithm for IEEE 802.16 BWA system. The proposed scheduler employs adaptive modulation and coding (AMC) scheme at the PHY layer according to the signal to noise ratio (SNR) on wireless fading channels. And we also define each kind of multimedia connections the cost function based on its service status, throughout or deadline in MAC layer. The simulation results show that our proposed scheduler can provide diverse QoS guarantees, maximum throughput and achieve an optimum tradeoff between throughput and fairness.

Published in:

Intelligent Information Hiding and Multimedia Signal Processing, 2008. IIHMSP '08 International Conference on

Date of Conference:

15-17 Aug. 2008

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