计算机工程 ›› 2008, Vol. 34 ›› Issue (24): 91-93.doi: 10.3969/j.issn.1000-3428.2008.24.032

• 网络与通信 • 上一篇    下一篇

无线传感器网络TCP性能的改善机制

李炉焦,李 云,陈前斌,聂 能   

  1. (重庆邮电大学光互联网及无线信息网络研究中心,重庆 400065)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

Improving Scheme of TCP Performance in Wireless Sensor Network

LI Lu-jiao, LI Yun, CHEN Qian-bin, NIE Neng   

  1. (Special Research Centre for Optical Internet & Wireless Information Networks, Chongqing University of Posts & Telecommunications, Chongqing 400065)

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要: 在无线传感器网络中,节点分布过于密集或大量数据流的突发将造成拥塞,导致报文丢失,引起吞吐量下降和能量浪费。该文提出一种新的拥塞控制机制PTCP,通过分段调整慢启动阶段的TCP窗口增长速度控制拥塞。仿真结果证明,该机制有效解决了传感器网络中的拥塞控制问题,提高了无线传感器网络的TCP性能。

关键词: 无线传感器网络, 传输控制协议, TCP窗口增长速率

Abstract: In Wireless Sensor Network(WSN), congestion may occur when sensor nodes are densely distributed or burst a mass of data flows, the congestion tends to cause packet loss, which sequentially causes lower throughput and wastes energy. This paper proposes a new congestion control scheme, phase-divided TCP. It controls the congestion through phase-divided adjusting of the growth rate of the TCP window in the slow-start. Simulation results demonstrate that this scheme can dramatically resolve congestion control problem, and improve TCP performance of WSN.

Key words: Wireless Sensor Network(WSN), transmission control protocol, growth rate of TCP window

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