中文摘要：

TCP／IP协议的成熟极大地促进了地面网络的发展，然而传统TCP／IP协议难以直接高效地应用于卫星网络。文中针对卫星网络固有的大带宽时延积、高误码率等特点以及卫星网络中UDP流的资源争用同题，深入对比分析了传统TCP协议在卫星网络中的缺点，并针对多媒体数据流引入TFRC机制，从而实现卫星网络TCP流量和UDP流量竞争情况下带宽的公平分配。实验表明：TFRC机制的引入可以有效解决流量带宽竞争问题，较好地实现卫星网络带宽的公平性。

英文摘要：

The maturity of TCP/IP protocol prompts the progress of ground network greatly; however, traditional TCP protocol can＇ t be directly applied to the satellite network efficiently. In view of instinct character such as big time delay product, high - error rate of satel- lite network and the problem of the resource competition of UDP,analyzed the defect of traditional TCP on satellite network deeply and introduced the TFRC mechanism into multi - media data flow so as to realize the fair utilization of bandwidth. Simulation results showed that with TFRC mechanism introduced,can achieve the fairness of bandwidth greatly in satellite network.