长传播延时卫星环境中TCP性能分析

Performance Analysis of TCP in Satellite Environments with Long Propagation Delay

卫星通信系统中的长传播延时是影响TCP性能的主要特性之一,对长传播延时卫星环境中TCP在整个动态连接过程中的工作情况进行了分析,综合考虑了单连接情况中连接建立初期不稳定阶段的情况和连接达到稳态阶段时的情况,并给出了Goodput的理论分析和仿真结果,进一步证明了连接的Goodput性能随着卫星链路传播延时的增大而下降。

Long propagation delay would degrade the performance of TCP in satellite communication systems.TCP performance in satellite environments with long propagation delay during the whole lifetime of a single connection is analyzed.The efficient application of TCP in satellite networks is studied.The initial unsteady state and steady state of the connection establishment are considered.The theoretical analysis and simulation results indicate that the Goodput performance degrades with the increase of propagation delay for satellite links.