Abstract: In the multi-hop and clustering hierarchical structure, which is often used in Wireless Sensor Network(WSN) of large-scale and high-density, cluster head node is the only way which the communication must be passed between inner-cluster and extra-cluster, it is also the node that congestion is most easily to happen. In order to solve the network congestion problem, this paper presents a Congestion Control algorithm Based on Virtual Cluster head(CCBVC) to release network congestion, including the establishment of Shortest Path Tree(SPT) in inner-cluster and construction of multiplexing path in extra-cluster. Simulation results show that the algorithm not only can ensure network throughput effectively, but also can shorten data transmission delay relatively.

Key words: Wireless Sensor Network(WSN), clustering, network congestion, congestion control, Shortest Path Tree(SPT), multiplexing path

摘要： 在大规模、高密度的无线传感器网络中，使用多跳分簇的层次结构有利于管理整个网络，且节省传感器节点的能量，但容易发生网络拥塞。针对该问题，提出一种基于虚拟簇头节点的拥塞控制算法，在簇内建立最短路径树，在簇间构造多元路径。实验结果表明，该算法能在保证网络吞吐量的同时，缩短数据的传输时延。

关键词: 无线传感器网络, 分簇, 网络拥塞, 拥塞控制, 最短路径树, 多元路径

CLC Number: 

• TP393