"Buffer allocation in WiMAX maximizes the throughput by achieving high link utilization of system and minimizes the power consumption. In this paper, traffic based QoS specific adaptive buffer allocation in WiMAX networks is proposed to increase the system throughput by using an adaptive buffer allocation strategy. The buffer management block initially allocates buffer to the flow requests based on buffer allocation factor which is computed using fuzzy logic. The allocated buffer is verified periodically by buffer reallocation technique. It computes satisfaction factors for real time and non real time flows."