卫星链路TCP传输性能分析

Analysis of the TCP Performance over Satellite Link

TCP协议作为TCP IP协议栈的主要传输协议 ,其在网络中的传输效率高低是影响IP网络传输性能的关键因素之一。当网络中存在卫星链路时 ,由于卫星链路的一些固有特性使得TCP的传输性能受到了一定的影响。本文对于TCP协议在卫星网中的传输性能问题进行了分析 ,指出了TCP协议在卫星网中应用时存在的问题 ,介绍与分析了一些相应的解决方法。

TCP as the main transfer protocol of TCP/IP stack has significant impact on the transfer performance of IP network.However,some inherent characteristics of satellite link impair the TCP performance.These characteristics differ from terrestrial channels.This paper first concludes such characteristics and analyzes their effects to the TCP performance,then introduces and evaluates corresponding TCP enhancements that may allow TCP to better utilize the available bandwidth provided by networks containing satellite links.