Research of TCP optimization technology for long-distance and high bandwidth-delay private network

Many existing implementations of TCP congestion control algorithms are mainly designed for public internet, which are needed to consider RTTs fairness and bandwidth and time-delay of unknown network. But these principles have shortcomings in data transmission in long-distance and high bandwidth-delay private network, which seriously affects the transmission performance and bandwidth utilization. Based on features of data transmission of private network, this article proposes a new congestion control algorithm TCP-PN to optimize transmission performance. Firstly the article will analyze the influence of package size and slow start on bandwidth utilization. Then, based on MSS and fast start, it designs a new congestion control algorithm for private network to relieve this influence. At last, the new congestion control algorithm of the optimization method will be tested for the private network in NS2 simulation environment.