一种基于虚拟簇头的拥塞控制算法

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.%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.