基于LEACH的无线传感器网络混合优化协议算法

发布时间：2018-02-17 00:27

本文关键词： 无线传感器网络路由协议混合优化　出处：《计算机应用》2014年08期 　论文类型：期刊论文

【摘要】：在无线传感器网络(WSN)协议研究中,降低节点的能量损耗、延长节点的使用寿命是研究的关键问题。针对无线传感器网络中传统LEACH协议在分簇机制及数据通信方面的不足,提出了一种混合优化的改进协议——HOBDE-LEACH。新的协议采用先分簇再选举簇头的策略,提出覆盖半径种子扫描成簇算法(CR-SSCA)进行快速分簇,保证对区域的全覆盖;网络运行期间结合能量和距离考虑负载均衡,分阶段采用不同的簇头选举和通信机制。仿真实验结果表明,与LEACH协议相比,HOBDE-LEACH的第一个节点死亡的轮循次数延长了66%,50%节点死亡时的网络轮循次数延长了20%;与LEACH-EI协议相比,所提协议的第一节点死亡的轮循次数延长了50%,50%节点死亡的网络轮循次数延长了19%。改进后的协议能有效地均衡网络负载和簇头节点能量消耗,更合理地分布簇头节点,延长网络生命周期。
[Abstract]:In the research of Wireless Sensor Network (WSN) protocol, reducing the energy loss of nodes and prolonging the service life of nodes are the key problems. Aiming at the shortcomings of traditional LEACH protocol in clustering mechanism and data communication in wireless sensor networks. A hybrid optimized improved protocol, HOBDE-LEACH. the new protocol adopts the strategy of clustering first and then electing cluster heads. A new algorithm named CR-SSCA (covering radius seed scanning clustering algorithm) is proposed for fast clustering to ensure full coverage of the region. Considering load balance in combination of energy and distance during network operation, different cluster head election and communication mechanism are adopted in different stages. The simulation results show that, Compared with the LEACH protocol, the number of rotations of the first node of HOBDE-LEACH was increased by 66% and 20% when the node died. Compared with the LEACH-EI protocol, the number of deaths of the first node in HOBDE-LEACH was increased by 20%. The number of rounds of the first node death of the proposed protocol has been prolonged by 50% and 50% of the network cycle number has been extended by 19.1%. The improved protocol can effectively balance the network load and cluster head node energy consumption, and distribute the cluster head node more reasonably. Extend the network life cycle.
【作者单位】：青海师范大学计算机学院;日本长崎综合科学大学;
【基金】：国家自然科学基金资助项目(6126104) 教育部“春晖计划”合作科研基金资助项目(Z2011026) 青海省自然科学基金资助项目(2011-Z-902,2014-Z-910)
【分类号】：TN929.5;TP212.9

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