JTCP: Congestion distinction by the jitter-based scheme over wireless networks

TCP, a widely used transport protocol performs well over the traditional network which is constructed by purely wired links. As wireless network is growing rapidly, the wired/wireless mixed inter-network, a heterogeneous environment will get wide deployment in the next generation ALL-IP wireless networks. TCP which detects the losses as congestion events could not suit the heterogeneous network in which the losses will be introduced by higher bit error rates or handoffs. There exist some unsolved challenges for applying TCP over wireless links. End-to-end congestion control and fairness issues are two significant factors. To satisfy these two criteria, we propose a jitter-based scheme to adapt sending rates by the packet losses and jitter ratios. The experiment results show that our jitter-based TCP (JTCP) conducts good performance over the heterogeneous network.