Abstract
Based on five scheduling types and their QoS requirements defined in IEEE 802.16e specification, this paper proposes a new scheduling algorithm for non-real-time or real-time multimedia services. Taking the performances of efficiency, fairness and complexity into consideration, the proposed algorithm enhances the efficiency of air interface resource at the expense of the short-time unfairness, but ensures the long-time fairness. Moreover, the proposed algorithm introduces an efficient QoS assurance mechanism, which implements the functions of congestion control, queuing management and traffic management. The simulation results based on a simplified traffic model show that the proposed algorithm guarantees better performances of efficiency and fairness than conventional algorithms, without increasing the algorithm complexity. Especially on the occasion of heavy-traffic requirement, the performance of efficiency and fairness can be improved by 50% at most.
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DONG Guojun, born in 1976, male, doctorate student.
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Dong, G., Dai, J. Scheduling algorithm for multimedia services in IEEE 802.16e OFDM system. Trans. Tianjin Univ. 14, 31–36 (2008). https://doi.org/10.1007/s12209-008-0007-9
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DOI: https://doi.org/10.1007/s12209-008-0007-9