A queue management method for improving TCP performance in wireless environments

We propose a queue management method for improving TCP performance over a wireless link. With our proposed control method, packet loss in the wireless link is completely eliminated and all packets are delivered in the correct order. No change is required to TCP itself or to the servers. Our proposed method is implemented between the media access control (MAC) layer and logical link layer in a base station, and is designed to help the local retransmission control in the MAC layer. Computer simulation experiments show that our proposed method can maximize the bandwidth use of the wireless link at high bit error rate conditions under conventional TCP controls. The fairness problem of TCP communication between connections with different bit error rate in wireless link is also improved.