Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (3): 105-108.DOI: 10.3778/j.issn.1002-8331.2010.03.031

• 网络、通信、安全 • Previous Articles     Next Articles

Research and application of reliable data transmission technique based on UDP

WANG Yan-fang1,2,DAI Yong1,LIU Dong-hua2,3,KONG Hua-wei2,ZENG Yan-yan1   

  1. 1.College of Information Engineering,Xiangtan University,Xiangtan,Hunan 411105,China
    2.Shanghai Institute of Computing Technology,Chinese Academy of Sciences,Shanghai 201203,China
    3.College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China
  • Received:2008-08-12 Revised:2008-10-23 Online:2010-01-21 Published:2010-01-21
  • Contact: WANG Yan-fang

基于UDP的数据可靠传输技术研究与应用

王艳芳1,2,戴 永1,刘东华2,3,孔华威2,曾艳艳1   

  1. 1.湘潭大学 信息工程学院,湖南 湘潭 411105
    2.中国科学院 上海计算技术研究所,上海 201203
    3.国防科技大学 电子科学与工程学院,长沙 410073
  • 通讯作者: 王艳芳

Abstract: Packets loss are always existing when using UDP to implement real-time media transfer in the internet.Thus propose time_based and packet-number_based united ACK mechanism,and improve AIMD(Additive Increase and Multiplicative Decrease) congestion control algorithm,based on studying on UDT,UDP_based reliable data transfer protocol.At the end use the protocol to implement efficient real-time audio and video transfer in the internet.Experiments demonstrate that reliability and efficiency have been improved after using the improved protocol.

Key words: reliable transmission, acknowledgement mechanism, congestion control, video surveillance

摘要: 针对使用UDP协议实现网络实时音视频数据传输时的丢包问题,在对基于UDP的数据可靠传输协议——UDT的原理进行深入分析的基础上,提出了基于时间和数据包数目相结合的确认机制和改进的AIMD(加性增加乘性减少)拥塞控制算法,由此实现网络音视频数据的高质量实时传输。实验证明,使用改进的UDT协议,可以有效提高数据传输的可靠性和效率。

关键词: 可靠传输, 确认机制, 拥塞控制, 视频监控

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