摘要： 从传输层和应用层2个角度对空间信息传输中地月通信链路可靠传输协议进行研究，基于OPNET软件开发CCSDS协议进程级模块。针对地月骨干链路场景配置TCP 、SCPS-TP、CFDP/UDP和MDP/UDP 4种可靠传输方式，并进行协议仿真与性能分析。实验结果表明，在长传播延迟、高误码率和高度不对称性前/返向信道速率的链路上，SCPS-TP协议失去了TCP增强优势，MDP协议也表现一般，而CFDP协议的可靠传输模式能较好地适应于这种环境。
关键词:
空间通信,
SCPS-TP协议,
CFDP协议,
MDP协议
Abstract: This paper concerns the study of reliable transport protocols employed in cislunar telecommunication environments from the two perspectives of transport layer and application layer. Based on OPNET software, CCSDS process-level modules are developed. Four kinds of reliable transport mechanism including TCP, SCPS-TP, CFDP and MDP are configured, and protocol emulation and performance analysis are conducted. Experimental results show that, with the long propagation delay, high error rate and a high degree of asymmetry in front/back to the channel rate of the links, SCPS-TP losts the advantage of TCP performance enhancement, MDP is in general, while the CFDP reliable transmission protocol model can well adapt to this environment.
Key words:
space communications,
SCPS-TP protocol,
CFDP protocol,
MDP protocol
中图分类号:
叶建设, 万鹏, 宋世杰. 地月通信链路传输协议的研究与性能分析[J]. 计算机工程, 2010, 36(15): 15-16,19.
XIE Jian-She, MO Feng, SONG Shi-Jie. Study and Performance Analysis of Transport Protocol over Cislunar Communication Links[J]. Computer Engineering, 2010, 36(15): 15-16,19.