【摘要】 能量消耗一直是限制WSN广泛应用的热门问题之一,能源容量的大小对各个传感器节点产生重要的影响.针对WSN中能耗过快,以及网络区域内能量消耗不均衡而导致的网络生命周期缩短的问题,同时为了提高WSN的能量利用率,提出了一种新型能耗优化的无线传感器网络非均匀成簇算法(UCNE).该算法首先根据节点的历史能耗来竞选簇头节点,将整个网络划分为不均匀的簇群从而平衡簇内节点通信与簇间节点通信的能耗.其次设立新的能量阈值作为网络重新分簇的标准,减少了频繁分簇造成的不必要的控制消息能耗.最后为了降低簇头节点的负担,竞选副簇头节点作为中继转发节点转发主簇头加工的数据并根据权值选择向前向簇头节点传递数据.通过对比相关协议,UCNE协议在平衡网络能耗,延长网络寿命方面表现更优.更多还原

【Abstract】 Energy consumption has been one of the hot issues limiting the wide application of WSN. The magnitude of energy capacity has an important impact on each sensor node. Aiming at the problem of shortening the network life caused by the excessive energy consumption in WSN and the imbalance of energy consumption in the region,and in order to improve the energy utilization rate of WSN,a newenergy-optimized unequal clustering algorithm for wireless sensor networks was proposed( UCNE). The algorithm firstly selects the cluster head node according to the historical energy consumption of the node,and divides the whole network into unequal clusters to balance the energy consumption between intra-cluster communication and inter-cluster communication. Secondly,a newenergy threshold is set as the standard for network re-clusting,which reduces unnecessary control message energy consumption caused by frequent clustering. Finally,in order to reduce the burden on the cluster head node,the campaign sub-cluster head node acts as a relay forwarding node to forward the data processed by the main cluster head and selects the data to be forwarded to the cluster head node according to the weight selection. By comparing the relevant protocols,the UCNE protocol performs better in balancing network energy consumption and extending network lifetime.更多还原