摘要
为改善无线传感网中节点能耗不均衡导致网络过早丧失监测感知功能的状况,节省网络后期二次甚至多次布设的成本代价,降低在偏远、危险等区域进行重复部署的风险性,提出一种基于节点能耗均衡性延长网络生存时间的改进策略。分别从网络生存时间、节点均衡值以及网络中死亡节点数量变化情况多个方面进行仿真结果获取,分别与已有的两种方法进行相同环境参数下的效果对比。理论分析与仿真验证结果表明,该策略优化了节点的能耗均衡性能,延长了网络的生存时间,实用性较强。
To improve the premature function loss of monitoring and perceiving in WSN caused by unbalanced consumption on energy, to save the cost on laying network twice or several times in lately network, and to reduce the risk of repeated deployments in remote and dangerous areas, the improved strategy to extend the lifetime of network based on the balance of power consumption was proposed. Results of simulation on many aspects were obtained such as the network lifetime, the equilibrium value of nodes and the node number of deaths, and the results were compared with both existing methods. Results of theoretical analysis and simulation show the proposed strategy optimizes the balanced node energy consumption, and it is practical and extends the lifetime of network.
出处
《计算机工程与设计》
北大核心
2015年第9期2334-2339,2375,共7页
Computer Engineering and Design
基金
国家科技重大专项基金项目(2014ZX03006003)
国家自然科学基金项目(61201380)
