Date Added: Apr 2012
Recent development mostly based on the high speed internet access of large amount of data at any time over wireless network. Packets loss can also occur due to link failure in wired cum wireless environment. To reduce the loss rate, packet delay, retransmission time, WiMax is proposed with cross layer design. In this paper, to improve the performance TCP in the WI-MAX flow its estimating bandwidth of the each packet, reduce the RTT in retransmission which gives more data transfer rate and also reduce the packet drop ratio. Some layers are merging their functions and provide traffic flow with ARQ in WiMax. Each node provides information through Access Point which can uplink and downlink feedback about packet as an ACK or NACK.