摘要
针对太阳辐照下能量收集能力异构的无线传感器网络,提出一种基于占空比的分布式能量中性分簇路由协议.在协议中,节点结合太阳辐照强度的预测值和自身能量转化效率得出能量收获能力,并通过遵循两个占空比维持能量中性.首先从网络中选择满足簇头占空比的节点定义为临时簇头集,以均衡网络能耗,保证节点能量中性.其次从临时簇头集中选出一组分布均匀的最佳簇头,可有效减少能耗,提升吞吐量.最后成员节点根据数据传输占空比调节发送数据的频率,以求得到最佳的能耗效率.通过仿真分析,该协议理论上可达到无限长的网络生存期,相比其他协议在提升网络吞吐量和降低簇失败次数方面有明显的优势.
For a wireless sensor network with heterogeneous energy collection capabilities under solar irradiation,a distributed energy neutral clustering routing protocol based on duty cycle is proposed.In the protocol,the node combines the predicted value of solar radiation intensity and its own energy conversion efficiency to derive the energy harvesting ability,maintains energy neutrality by following two duty cycles.First,the nodes selected from the network that satisfy the cluster head duty cycle are defined as temporary cluster head sets to balance network energy consumption and ensure node energy neutrality.Secondly,a set of uniformly distributed optimal cluster heads is selected from the temporary cluster heads,which can effectively reduce energy consumption and improve throughput.Finally,the member node adjusts the frequency of sending data according to the data transmission duty cycle in order to obtain the best energy consumption efficiency.Through simulation analysis,this protocol can theoretically reach an infinite network lifetime.Compared with other protocols,it has obvious advantages in improving network throughput and reducing the number of cluster failures.
作者
李正阳
陶洋
周远林
杨柳
LI Zheng yang;TAO Yang;ZHOU Yuan-lin;YANG Liu(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)
出处
《微电子学与计算机》
北大核心
2020年第10期30-37,共8页
Microelectronics & Computer
基金
国家自然科学基金项目(61801072)
重庆市自然科学基金项目(cstc2018jcyjAX0344)。
关键词
能量获取无线传感器网络
占空比
收集能力异构
能量中性
energy harvesting wireless sensor network
duty cycle
Collection capacity heterogeneity
energy neutral
