Performance Evaluation of Tcp Sack1 in Wimax Network Asymmetry

The WiMAX technology support to different channel bandwidth, cyclic prefix, modulation coding scheme, frame duration, simultaneous two way data transfer and propagation model. The WiMAX network asymmetry is largely depends on DL: UL ratio. This paper evaluate the performance of TCP Sack1 by considering Channel Bandwidth, Cyclic Prefix, Modulation Coding Scheme, Frame Duration, Two way transfer and Propagation model in WiMAX network with network asymmetry. The performance of TCP Sack1 in WiMAX network is evaluating by varying MAC layer parameter such as channel bandwidth, cyclic prefix, modulation coding scheme, frame duration, DL: UL ratio and physical layer parameter such as propagation model and full duplex mode of data transfer and other operating parameter such as downloading traffic and these parameters really affect the performance of TCP Sack1 in WiMAX network. The performance of WiMAX network is measured in terms of throughput, goodput and number of packets dropped.