节点失效对无线传感器网络覆盖与连通可靠性影响的模型研究

针对节点失效引起无线传感器网络监测性能下降的问题，该文以节点随机均匀部署的网络为研究对象，从节点失效的角度提出了评价网络覆盖与连通两个基本监测性能的量化指标，建立了评价模型，通过设计节点失效算法对随机失效与恶意入侵两种节点失效类型进行了计算机模拟，利用仿真结果比较了网络监测性能在不同失效类型时的变化情况，总结出经验公式，为网络参数的选取提供了依据。

Research on the Impact of Node Failure on the Reliability of Coverage and Connection for Wireless Sensor Networks

In this paper, we consider the impact of node failure on the monitoring reliability of wireless sensor networks. The quantitative criterions of two basic network monitoring performance, coverage and connection, are proposed from the perspective of node failure focusing on the case of stochastic and uniform node deployment. The performance criterion model is given. Two node failure forms, stochastic failure and vicious failure are discussed and simulated by the designed node failure algorithms. The impact of node failures on the network monitoring reliability are analysed based on the simulation results. Experience formulas which are helpful for choosing the network parameters are also summarized.