| 面向LEO卫星网的显式TCP方法 |
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| 引用本文： | 黄操,刘发林.面向LEO卫星网的显式TCP方法[J].中国科学院研究生院学报,2012,29(1):76-80. |
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| 作者姓名： | 黄操 刘发林 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系,合肥,230027 |
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| 基金项目： | 国家自然科学基金(60496314)资助 |
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| 摘 要： | 提出一种利用TCP接收端卫星TCP流数量和经过路径卫星数这2种网络显式信息来调控发送窗口的新方法.此方法中各TCP流根据自身的不同时延对丢包作出敏感度不同的窗口调整反应,以对应时延越大拥塞反应策略越低效的规律.NS2仿真结果表明,这一方法不仅能在应对信道丢包的同时,提高各不同时延的TCP流的公平性、保证其吞吐量,还能较好地预防星地下行链路的丢包,并提高其带宽利用率.
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| 关 键 词： | LEO卫星网 TCP 公平性 带宽利用率 信道丢包 |
An explicit TCP method for LEO satellite networks |
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| HUANG Cao
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LIU Fa-Lin.An explicit TCP method for LEO satellite networks[J].Journal of the Graduate School of the Chinese Academy of Sciences,2012,29(1):76-80. |
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| Authors: | HUANG Cao LIU Fa-Lin |
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| Institution: | (Department of Electronic Engineering and Information Science,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | An explicit method for adjusting the sending window using the number of TCP flows at the destination satellite and the number of satellites in the path is proposed.With this method,different reactions to packet-droppings are executed for different-delay flows.The simulation results using NS2 show that the performances and fairness of different-delay TCP flows are enhanced distinctly,the packet-droppings are decreased,and the bandwidth utilization of the downlinks of the destination satellite is increased effectively while dealing with channel drops. |
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| Keywords: | LEO satellite networks TCP fairness bandwidth utilization channel drops |
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