摘要
针对无线传感器网络结构不统一,缺乏针对性的网络监测性能评价标准这一问题,该文分析了节点失效对一类三角形网格传感器网格监测性能的影响,提出了以失效节点率、活跃节点的失效覆盖邻居节点数、网络分支数、网络覆盖损失率等因素作为评价标准。该评价标准构成该类型网络的监测性能评价模型。结合网络结构给出了一种三角形网格化的方法,用来计算网络覆盖损失率的准确值。仿真结果表明在不同节点失效情况下,该评价标准能有效地评估网络监测性能受影响的程度。
In view of the problem of lacking targeted performance criterions for different structures of wireless sensor networks, the impact of node failure on the network monitoring performance is analyzed focusing on triangle grid-based wireless sensor networks. Some performance criterions, including the rate of failing node, the number of coverage neighbor nodes of active nodes, the number of network branches, performance criterion model for the network. The triangle grid method is presented for computing the degree of losing coverage accurately. The simulation results show that the proposed performance criterions are effective for evaluating the network monitoring performance in different node failures.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第1期1-6,共6页
Journal of Nanjing University of Science and Technology
基金
江苏省自然科学基金(BK2006202)
关键词
三角形网格
无线传感器网络
节点失效
监测性能
triangle grids
wireless sensor networks
node failures
monitoring performances
