基于TCP Reno和TCP Vegas拥塞控制性能研究

Research of congestion control performance based on TCP Reno and TCP Vegas

介绍了传输控制协议(TCP)的拥塞控制技术,对两种典型的TCP拥塞控制算法TCP Reno和TCP Vegas进行了详尽的分析,对其性能进行了比较。同时对TCP Reno和TCP Vegas在混存网络环境下的性能进行分析,并针对TCP Vegas中的和参数进行修改,提出了Vegas-A+算法使它们能并存于网络中。在NS2仿真环境下对改进的控制算法进行了仿真,仿真结果表明了改进算法的有效性。

The TCP （Transmission Control Protocol） congestion control techniques, and a detailed analysis of TCP Reno and TCP Vegas which are two typical TCP congestion control algorithms are mainly focused on. The performance of the TCP Reno and TCP Vegas in the mixed network environment is also analyzed, and not only the parameters α and β of the TCP Vegas are modified properly, but also an algorithm called Vegas-A＋ is proposed, so that they can co-exist in the network. It is simulated by NS2, and proved the validity of the improved method.