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数据收集是无线传感器网络的一个基本功能,由于部署在基站周围的传感器节点承担着网络内大部分的负载,因此导致能量迅速耗尽.但是现有的负载平衡的基站移动策略只能在传感器节点被均匀布撒的情况下才能有效地延长网络寿命.本文针对在含有洞的无线传感器网络区域中,提出了基站移动的4种轨迹,基站沿着边界之间的中轴线进行移动,把中轴线上的节点作为汇聚节点,可以降低包的丢失率.实验仿真结果表明,该算法不仅能平衡节点负载,提高包的接收率,也降低了网络能耗,延长了网络寿命.
Data collection is a basic function of wireless sensor network, and the sensor nodes deployed around the base station bear most of the load in the network, resulting in the rapid depletion of energy.But the existing load-balancing base station mobility strategy can only operate at sensor nodes Is uniformly distributed in order to effectively extend the network life.In this paper, in the area containing the hole in the wireless sensor network, proposed four kinds of mobile base station trajectory, the base station along the axis between the boundaries of the move, the central axis Can reduce the packet loss rate.Experimental simulation results show that the proposed algorithm can not only balance the node load, improve the packet reception rate, but also reduce the network energy consumption and extend the network lifetime.