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一种基于多跳路由的WSN分簇协议能耗优化模型 被引量:1

Energy Cost Optimization Model for Multi-hop Routing Protocol Based Clustering in Wireless Sensor Networks
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摘要 针对LEACH协议中每轮产生的簇头个数为最佳簇头数的概率并不是最大,网络能量效率低的问题,提出了一种节点服从泊松分布的WSNs分簇协议能耗优化模型。考虑到一般选择多跳路由比单跳路由更节省能量,对多跳方式下的协议能耗和最优分簇数目的分析和建模,建立了节点泊松分布密度、最优分簇数目与能耗的关系。理论分析和仿真实验表明:节点泊松分布密度影响最优分簇数目,而最优分簇情况下分簇能耗最优,所以适当调整节点分布密度,合理选取最优分簇数目,能够有效地改善WSNs分簇协议的能耗性能。 In LEACH protocol, the number of cluster heads being selected in each round could be equal to the optimal number with low-probability. Moreover, the energy consumption of the whole network is inefficient. To solve the above problems, an energy cost optimization model was proposed for the nodes deployed in Poisson distribution in wireless sensor networks. Considering that multi-hop routing consumes less energy than single-hop routing, the relationships among the nodes' density of Poisson distribution, optimal number of clusters and power consumption for multi-hop routing was examined. The theoretical analysis and simulation results show that the nodes' density affects the optimal number of clusters, which lead to the lowest energy consumption. Therefore, the node distribution density can be properly adjusted, and the optimal number of clusters reasonably is obtained to improve the energy consumption effectively.
出处 《系统仿真学报》 CAS CSCD 北大核心 2014年第5期1021-1025,共5页 Journal of System Simulation
基金 湖北省自然科学基金资助项目(2012FFB00402) 基础教育信息技术服务湖北省协同创新中心项目 湖北第二师范学院创新团队建设计划资助项目
关键词 无线传感器网络 泊松分布密度 分簇数目 能耗 wireless sensor networks Poisson distribution density the number of clusters energy consumption
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参考文献12

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