| TCP-ATCA： Improved Transmission Control Algorithm in Satellite Network |
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| 作者单位： | 北京航空航天大学电子信息工程学院，北京航空航天大学电子信息工程学院，北京航空航天大学电子信息工程学院 |
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| 基金项目： | 国家自然科学基金，The Blue-Sky New Star Grant of Beijing University of Aeronautics and Astronautics |
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| 摘 要： | An adaptive transmission control algorithm based on TCP （TCP-ATCA） is proposed to reduce the effects of long propagation delay and high link error rate of the satellite network on the performances. The flow control and the error recovery are differentiated by combined dynamic random early detection-explicit congestion notification （DRED-ECN） algorithm, and, moreover, the pertaining congestion control methods are used in TCP-ATCA to improve the throughput. By introducing the entire recovery algorithm, the unnecessary congestion window decrease is reduced, and the throughput and fairness are improved. Simulation results show that, compared with TCP-Reno, TCP-ATCA provides a better throughput performance when the link capacity is higher （ ≥600 packet/s）, and roughly the same when it is lower. At the same time, TCP-ATCA also increases fairness and reduces transmission delay.
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| 关 键 词： | 人造卫星网络 拥塞控制 TCP协议 飞行安全 |
| 收稿时间： | 10 January 2007 |
TCP-ATCA: Improved Transmission Control Algorithm in Satellite Network |
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| Authors: | Liu Liu Hengna Zhao Han |
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| Institution: | School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | An adaptive transmission control algorithm based on TCP (TCP-ATCA) is proposed to reduce the effects of long propagation de- lay and high link error rate of the satellite network on the performances. The flow control and the error recovery are differentiated by combined dynamic random early detection-explicit congestion notification (DRED-ECN) algorithm, and, moreover, the pertaining con- gestion control methods are used in TCP-ATCA to improve the throughput. By introducing the entire recovery algorithm, the unneces- sary congestion window decrease is reduced, and the throughput and fairness are improved. Simulation results show that, compared with TCP-Reno, TCP-ATCA provides a better throughput performance when the link capacity is higher (≥ 600 packet/s), and roughly the same when it is lower. At the same time, TCP-ATCA also increases fairness and reduces transmission delay. |
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| Keywords: | congestion control TCP protocol satellite network |
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