Explicit window adaptation algorithm over TCP wireless networks

摘要

A feedback-based congestion control algorithm is described which improves transmission control protocol (TCP) performance over wireless networks. An explicit feedback scheme is proposed for the fair sharing of the bandwidth by modifying the receiver's advertised window in TCP acknowledgments returning to the source. Using the feedback information, the proposed algorithm adapts the window size to avoid the congestion and sees the packet loss only due to the wireless link error. Based on the asymptotic analysis, it is shown that the proposed algorithm guarantees the fair sharing and improves wireless TCP performance. The effectiveness of the proposed algorithm is demonstrated by simulations.