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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 proposal gradually becomes the standard of space communication. Especially after IP over CCSDS Space Links Red Book was proposed, IP has become the standard upper layer application of space information system. This paper presents a design and implementation method of CCSDS acceleration gateway in Tiandi communication system. The structure of Tiandi communication network based on TAC is introduced and its key technologies are described. At last, the design and implementation of the proposed method is verified in OPNET. The simulation results of OPNET show that this technique greatly improves the transmission efficiency of TCP applications over the space link, and maintains fairness when the bandwidth of multiple connections is shared.