IP over CCSDS网关TCP增强关键技术研究

Research on TCP Performance Improvement of IP over CCSDS Space Links Gateway

随着空间通信系统的发展,CCSDS建议逐渐成为了空间通信的标准,特别是IP over CCSDS Space Links红皮书提出以后,IP已经成为空间信息系统的标准上层应用。提出了一种天地通信系统CCSDS加速网关的设计实现方法,介绍了基于加速网关的天地通信网络结构,描述了其关键技术实现,最后对提出的设计实现方法在OPNET中进行了仿真验证。OPNET仿真结果表明,该技术大大提高了TCP应用在空间链路上的传输效率,而且在多连接共享带宽时保持了较好的公平性。

With the Development of space communication system, CCSDS recommendation has gradually become the standard of space communication. Especially after the proposal of the red book IP over CCSDS Space Links, IP has become the standard upper application of space communication system. A design and implementation method of TCP performance enhancement proxy（PEP） is proposed, the network architecture is given based on the PEP, and the main technology of PEP is introduced. The proposed method is simulated and validated with OPNET. Simulation result shows that this technology can greatly improve the transmission efficiency when TCP is applied in space communication, with fairness achieved when the bandwidth is shared among multi-connections.