摘要
传输控制协议(TCP)是TCP/IP协议族的核心协议,当应用于测控网中的卫星链路时,由于卫星链路传播时延大、信道不对称、传输误码率高的特点,TCP协议性能下降.对几种常见的TCP版本在地面链路和卫星链路的应用进行了仿真比较,找出最适合卫星链路的TCP版本,在此基础上针对卫星链路进行改进使卫星链路的各RL量得到提高,最后利用仿真平台进行验证.
TCP is the core protocol in TCP/IP protocol suite. When it is used in satellite link of space TT＆C net, the performance of TCP will deteriorate because of the long delaying in satellite link, asymmetric channel and high transmission error rate. In this paper, several solutions to these problems were discussed. Simulations and comparisons were made for some TCP versions used in ground or satellite link, and the most appropriate TCP protocol was determined. Finally some modifications were conducted. The verification was performed on the simulation platform.
出处
《应用科技》
CAS
2008年第4期48-52,共5页
Applied Science and Technology
关键词
测控网
卫星链路
TCP
SACK
space TT＆C net
satellite link
transmission control protocol
SACK
