计算机工程 ›› 2012, Vol. 38 ›› Issue (9): 79-82.doi: 10.3969/j.issn.1000-3428.2012.09.024

• 网络与通信 • 上一篇    下一篇

无线多跳网络中Semi-TCP协议的实现

刘 梅a,姜胜明b,陆以勤b   

  1. (华南理工大学 a. 信息网络工程研究中心;b. 电子与信息学院,广州 510640)
  • 收稿日期:2011-07-01 出版日期:2012-05-05 发布日期:2012-05-05
  • 作者简介:刘 梅(1986-),女,助理工程师,主研方向:通信网络协议;姜胜明,教授、博士生导师;陆以勤,教授
  • 基金项目:
    国家“863”计划基金资助项目(2007AA01Z210)

Implementation of Semi-TCP Protocol over Wireless Multi-hop Network

LIU Mei a, JIANG Sheng-mingb, LU Yi-qinb   

  1. (a. Information Network Engineering and Research Center; b. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, China)
  • Received:2011-07-01 Online:2012-05-05 Published:2012-05-05

摘要: 为解决传统TCP协议在无线多跳网络中经常误判网络拥塞状况且反应迟钝的问题,提出一种Semi-TCP协议的实现方法。添加虚拟TCP层控制包的过滤和重发,采用逻辑信道传递跨层信息,应用一跳式ACK速率控制策略调节发送速率。仿真实验结果表明,该实现方法能在不改变原TCP协议框架的基础上提高系统性能。

关键词: 无线多跳网络, TCP协议, Semi-TCP协议, 拥塞控制, 跨层

Abstract: Original TCP protocol often misjudges the congestion status and reacts slowly in wireless multi-hop networks, and this paper proposes an implementation method of Semi-TCP protocol. It uses a Virtual TCP(VTCP) layer to control the filter and retransmission of the packets, a logical channel designed to deliver cross-layer information, and a rate adjustment mechanism with one-hop ACK packet. Simulation experimental results show that this method can improve congestion control performance without changing original TCP framework.

Key words: wireless multi-hop network, TCP protocol, Semi-TCP protocol, congestion control, cross-layer

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