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

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

CLC Number: 

• TP393.07