重庆邮电大学学报（自然科学版）Issue(1)：53-59,7.DOI:10.3979/j.issn.1673-825X.2016.01.008
深空通信中基于中继选择的文件传输协议
File delivery protocol based on relay selection for deep space communication
摘要
Abstract
In view of the problem of long delay,large BER and intermittent interruption in deep space communication,a deep space file delivery protocol based on relay selection is proposed.The presented protocol divides the file delivery into two stages:hop-by-hop transmission and end-to-end retransmission.In transmission stage,a relay selection algorithm is put forward,which selects the appropriate relay nodes based on the law of celestial motion,and builds the optimal path accord-ing to the relation between loss rate and channel characteristics to decrease packet dropout and the retransmission times.In retransmission stage,the receiver checks the received packets and requires the source to retransmit the lost ones through end-to-end link,which can guarantee the reliability of data delivery.Simulation results indicate that when the end-to-end BER is greater than 1 0 -5 ,the proposed file delivery protocol can effectively decrease retransmission times and lower trans-mission delay.When BER is 1 0 -3 ,compared with CFDP,the transmission delay can be reduced by 40% indicating that the proposed file delivery protocol can well adapt to deep space communication environment.关键词
深空通信/中继选择/文件传输协议/时延Key words
deep space communication/relay selection/file delivery protocol/delay分类
信息技术与安全科学引用本文复制引用
赵辉,王琴,彭海英,王恩普..深空通信中基于中继选择的文件传输协议[J].重庆邮电大学学报（自然科学版）,2016,(1):53-59,7.基金项目
国家自然科学基金（61271261）；重庆市科委自然科学基金（CSTC 2012jjA40048）Foundation ItemThe National Natural Science Foundation of China （61271261）；The Natural Science Foundation Project of CQ CSTC （）
