Novel bandwidth allocation and packet scheduling strategy for WiMAX

Abstract

IEEE 802.16 and its variants provide Quality of Service (QoS) by dividing the data traffic into five service classes governed by QoS parameters. Efficient bandwidth allocation algorithm and packet scheduling algorithms ensure that the desired QoS requirements are met. In this paper, a novel bandwidth allocation algorithm and a packet scheduling algorithm are proposed that regulate bandwidth intensive connections by applying three–strike technique. The proposed algorithms ensure that the bandwidth is distributed effectively among the conforming connections thereby improving the overall QoS of the network. Simulation results of the proposed algorithm, when compared with standard algorithms like Earliest Deadline First (EDF), reveal that the proposed algorithm significantly increases the throughput and decreases the data drop for the conforming connection as compared to the EDF algorithm. Throughput improvements and data drop reduction are seen for intra–class inter–MS connections as well as inter–class intra–MS connections.