基于自适应拥塞避免算法的无线TCP性能改进研究

摘要

According to the TCP performance deterioration problems in the wireless environment, an adaptive congestion avoidance algorithm is researched and a wireless TCP improvement mechanism is put forward. The mechanism introduces a judgment factor of congestion packet loss and wireless packet loss, takes more accurate transmission rate adjustment mechanism according the wireless error judgment, realizes the separation of congestion control and error control, thereby enhances the performance of wireless TCP. The simulation results show that TCP improvement mechanism performance based on adaptive congestion avoidance was significantly optimization.%针对无线环境下TCP性能恶化的问题，在研究分析一种自适应拥塞避免算法的基础上，提出一种基于该算法的无线TCP改进机制。该机制引入拥塞丢包与误码丢包的判决因子，能针对无线误码的判断采取更为准确的发送速率调整机制，很大程度上实现了拥塞控制与差错控制的分离，从而提升了无线TCP的性能改善。仿真结果表明，基于自适应拥塞避免算法的TCP改进机制性能得到显著优化。