Cross-layer method to improve TCP performance in Ad Hoc networks
Yong Ren · Jisuanji gongcheng · 2005
Many researches have shown that TCP performance in ad hoc networks is extremely poor, because the congestion control mechanism of TCP cannot effectively deal with the problem of packet drops caused by the shared channel contention. In this paper, a cross-layer method was presented,which adaptively adjusted the TCP maximum window size according to the number of RTS (Request To Send) retries of the MAC layer at the TCP sender, to control the number of TCP packets in the network and thus decrease the channel contention. The simulation results show that this method can remarkably improve the throughput and stability of TCP.