| 卫星网中基于时间戳的TCP拥塞控制算法研究 |
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| 引用本文： | 张伟,王绍棣.卫星网中基于时间戳的TCP拥塞控制算法研究[J].南京邮电大学学报(自然科学版),2005,25(2):23-27. |
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| 作者姓名： | 张伟 王绍棣 |
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| 作者单位： | 1. 南京邮电学院,计算机科学与技术系,江苏,南京,210003;苏州大学,计算机科学与技术系,江苏,苏州,215006
2. 南京邮电学院,计算机科学与技术系,江苏,南京,210003 |
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| 基金项目： | 国家高科技“八六三”计划(2002A712037)资助项目 |
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| 摘 要： | TCP(传输控制协议)拥塞控制机制直接使用在卫星网中存在很多不足。针对卫星网通信时延长、网络环境变化复杂的特点,利用TCP协议中的时间戳扩展选项,设计实现了一种改进的TCP重传和拥塞控制算法,能够根据RTT(RoundTripTime,往返时间)的变化对网络情况进行预测,从而及时重传数据包并调整窗口大小,仿真实验证明改进算法能够很好地提高TCP性能。
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| 关 键 词： | RTT估计 拥塞控制 重传 |
| 文章编号： | 1000-1972(2005)02-0023-05 |
| 修稿时间： | 2004年6月15日 |
Research on TCP Congestion Control Algorithm Based on Time Stamp in Satellite Network |
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| ZHANG Wei,WANG Shao-di.Research on TCP Congestion Control Algorithm Based on Time Stamp in Satellite Network[J].Journal of Nanjing University of Posts and Telecommunications,2005,25(2):23-27. |
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| Authors: | ZHANG Wei WANG Shao-di |
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| Abstract: | There are some shortages existed in TCP congestion control mechanism when it is deployed in satellite network directly. According to the characteristics of satellite network , the longer propagation delay and the more complex conditions, an improved TCP retransmission and congestion control algorithm based on TCP time stamp extension option is designed and implemented in this paper. The algorithm can forecast network situation by RTT(Round Trip Time) estimation, then start the retransmission in time and adjust the window size. At last the improved algorithm's performance is validated by the simulations. |
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| Keywords: | Round trip time estimate Congestion control Retransmission |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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