改进的FAST TCP参数选择方案

Improved FAST TCP Preferences Selection Scheme

针对FAST TCP协议参数选择方案存在的参数选择问题,建立包含窗口更新周期参数和指数滤波环节的FAST TCP网络拥塞控制模型,应用劳思-郝尔维兹稳定判据分析该模型的稳定性,提出一种根据控制器增益参数、窗口更新周期和网络相关参数选择合适协议参数的改进方案以确保FAST TCP系统稳定。理论计算与仿真验证表明,与其他相关方案相比,该改进方案具有更准确的选择范围。

Aiming at the parameter selection problem of FAST TCP preferences selection scheme,the FAST TCP network congestion control model which includes the window update period parameter and the exponent filter element is established,and the stability of this model is analyzed with Routh-Hurwitz stability criterion.An improved preferences selection scheme is proposed to ensure the FAST TCP network stability according to the controller gain parameter,the window update period,and the network relevant parameters.The theoretical computation and the simulation results demonstrate that this improved scheme possesses more accurate select ranges in contrast to other related scheme.