Improve TCP performance over wireless link

The issue of TCP performance over wireless link and the related work are introduced. A new scheme is proposed to improve TCP performance over wireless link in the direction from mobile host to wired network. It deploys a TCP agent at the base station to monitor the segments related to the mobile host, and then triggers TCP fast retransmission on mobile host side by replicating and forwarding specific ACKs, which can effectively avoid timeout retransmission. Simulation results show that the new scheme has favorable performance.