Enhance TCP Performance in Ad hoc Network by TCP-RC
Bingxin Shi · Journal of Chinese Computer Systems · 2006
By far, there were some approaches proposed to improve TCP performance in Ad hoc network. In generally, they freeze TCP connection temporarily when route is failed, and resume TCP transmission from the frozen state when route is reconstructed. However, In fact, the reconstructed route between TCP source and TCP receiver may be very different from the route before failures, so it isnt optimal to resume the TCP transmission from the original frozen state. In this paper, we propose a new approach, TCP-RC, which re-compute cwnd and ssthresh for the TCP connection after route is reconstructed, thus it can adjust the TCP transmission rate adaptively according to current capacity of TCP connection. Consequently, TCP-RC lowers possibility of bursty traffic and avoids invoking congestion control. Analyses and simulations show that TCP-RC had achieved better TCP performance than Reno in Ad hoc Network.