An Adaptive Traffic Allocation Scheduling for Mobile WiMAX

OFDMA is suitable for multiple access technique for packet- based wireless communication system. OFDMA-based system can achieve high system throughput by multi-user diversity in limited radio resource. One important technique to increase system performance is a scheduling supporting multi-traffic in the 4G system. The proposed algorithm provides priority regarding delay requirement and then allocates user´s packets in a frame according to required data rate of each traffic class. Simulation results show that proposed algorithm satisfies require data rate of real time and non-real time traffic class at large number of users and has low outage ratio.