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中文摘要：
基于多跳路由的传感器网络具有集中式数据收集和多对一数据通信模式等特点,这容易导致数据通信出现漏斗效应,即离汇聚节点越近,网络越拥塞,节点能耗也越大,结果使某些节点甚至整个网络过早死亡。针对节点呈带状分布的同构单跳分簇网络,提出了两种能有效均衡网络负载的节点密度控制策略,通过控制各簇活动节点数量以及增加备用节点的方式,实现网络能耗的平衡。理论分析给出了两种策略下各簇活动节点数量以及所需备用节点数量的定量关系。两种策略均适合于网络负载动态变化的情况,而且不要求所有节点都能直接与基站通信,因此有着更广泛的应用场合。实验结果验证了两种策略的有效性。
英文摘要：
Based on the multi-hop routing sensor networks are characterized by centralized data gathering and many to one data communication pattern, which easily lead to a funnel effect for data communications. That means more recent from the sink node, the network is more congested and the energy consumption of nodes is greater. The result is that a certain nodes of the network will die early. For one-hop clustering sensor networks with zonal distribution homogeneous nodes, this paper proposes two effective node densi- ty control strategies, by controlling the activities of the cluster nodes and increasing the standby nodes, to achieve a power consumption balanced network . Theoretical analysis gives the quantitative relationship about the number of the cluster activities and the required standby nodes. Two strategies are suitable for dynamic network load, and all nodes are not required to direct communication with the base station, so they have a wider application. Experimental results demonstrate the effectiveness of the two strategies.
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