摘要
本文分析了现有的多种基于无线卫星链路的TCP拥塞控制改进协议,并在此基础之上提出了一种适于卫星链路的TCP拥塞控制跳动窗口算法,此算法的优点主要体现在:减少了发送方不必要的确认信息,不仅克服了Go-back-n算法的缺点,而且极大地避免了数据的浪费重传,提高了通信效率,减轻了卫星通信负担,并具有灵活性和易控性等特点。接着介绍了此拥塞控制算法在基于“北斗一号”卫星数字报文通信的西部“数字油田”建设中的文件传输系统的实现和应用,并说明了文件传输系统的特点,列出了此系统的设计流程图,给出了此算法在流程图中的应用位置。研究此算法不仅对基于卫星的互联网发展具有推动作用,而且对我国自主的卫星通信事业的发展具有很大帮助。此算法在应用中取得了很好的效果。
The paper discusses the improvement of TCP congestion control via wireless dada link, and puts forward the skipping window algorithm of TCP congestion control, the algorithm is more fit for the satellite communication. The algorithm's merits are that reducing the receiving side's ACK info content, overcoming the demerit of the Go-back-n algorithm, avoiding the info' wasteful transmittal, enhancing the efficiency of the communication, alleviating the satellite's burden, being agile and controllable. The algorithm of skipping window has been used in the File-transfer System, which is a part of the building of west 'digital oil field' using the 'Beidou No 1' satellite. Here also lists the File-transfer System's flow chart and points out the algorithm's position in the chart. The System's effect and efficiency are proved good.
出处
《微计算机信息》
2004年第6期101-103,共3页
Control & Automation
基金
国家十五科技攻关项目(2001BA605A-2)
场总线及自动化北京市重点实验室基金资助。
