卫星IP网络是当前研究的热点之一.进一步发展Internet业务需要增大带宽并且要有移动性,因而卫星网与IP网结合成了热门话题.TCP协议是TCP/IP协议栈的主要传输协议,它在网络中的传输效率是影响IP网络传输性能的关键因素之一.首先介绍卫星IP特点,针对卫星网的信道差错率高、传播延迟长和信道不对称等特点,对TCP协议在卫星网络中的传输性能进行了分析,提出了相应的改进措施.%The combination of satellite network and IP network has become a hot topic, since the further development of Internet service needs increased bandwidth and mobility. TCP is the major transmission protocol of TCP/IP protocol stack, and its transmission efficiency in the network is one of the key factors that influence the transmission performance of IP network. The paper describes the features of satellite IP, analyzes the transmission performance of TCP in satellite network based on issues such as the high channel error rate, long transmission delay and asymmetric channels of satellite network, and introduces some research results of this field in recent years.
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