Publication

Abstract : This paper presents a novel cross-layer technique to optimize the Transmission Control Protocol (TCP) performance in wireless networks by avoiding the bottleneck of packet losses between the network layers. The standard TCP used in wired network cannot be used in wireless networks due to the time varying nature of the channel. By considering this fact, a unique congestion control algorithm with the modified acknowledgement accumulating model is developed to circumvent packet losses and to address congestion control in the network. The proposed method utilizes the cross layer feedback from the top and underneath layers to enhance the TCP execution rather than calling on a congestion control protocol after packet loss. To optimize the TCP performance through error rate, an improved Adaptive Modulation and Coding AMC) has been used. The performance metrics used to evaluate the proposed system are end-to-end delay and end-to-end throughput with TCP Reno-2 model as simulation tool.