Proportional rate scheduling based on QoS in mobile WiMAX networks |
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Authors: | Fang Lintang Zhang Xiaolin |
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Institution: | School of Electronic and Information Engineering, Beihang Univ., Beijing 100191, P.R.China |
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Abstract: | A new scheduling scheme based on users’ quality of service (QoS) in mobile WiMAX networks is presented. The proposed scheme tracks each user’s average rate and adjusts the corresponding scheduling weight adaptively to result in: (a) each user’s average rate is proportional to the corresponding QoS level; (b) the constraints of the minimal and/or maximal rates required by QoS can be satisfied; (c) the utility function of system is maximal under the constraints (a) and (b). Theoretical analysis based on utility function and simulation results indicates the system throughput can be improved dramatically in the proposed scheme. |
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Keywords: | mobile WiMAX quality-of-service scheduling utility function |
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