Congestion control algorithm for TCP in wireless network

Abstract

Transmission control protocol (TCP) is a main transport layered communication protocol and works very well with wired networks where bit error rate is very low and the main cause of loss is congestion only. With the advancement of wireless communication technologies, the wireless networks are becoming integral part of our day to day life. Networks with wireless links meet various wireless losses due to bit error rate, host mobility, etc. But, any packet loss is interpreted as a congestion loss by TCP and inappropriate action is taken which degrades performance by reducing transmission rate. To differentiate the packet loss from congestion to non-congestion, this paper will focus on an algorithm which uses jitter ratio as a loss predictor. This algorithm will give better results than XJTCP(cross-layer jitter based transmission control protocol).