基于可能性分布的无线传感器网络可靠性分析

Wireless Sensor Networks Reliability Analysis Based on Possibility Distribution

将传感器节点失效行为用可能性分布来刻画,通过引入结构函数,建立传感器节点与网络状态的关系,构造出了一种无线传感器网络可能可靠性函数.该函数表示无线传感器网络在观察时刻网络状态不低于某一值的可能性.通过实例分析,所构造的函数能够有效评价所部署的无线传感器网络的可靠性.

The failure behavior of the sensor nodes is analyzed by the method of possibility distribution. By introducing the structure function, the relationship between the sensor nodes and the network state is established. A possible reliability function of wireless sensor network is constructed. This function re- presents the probability that the network state of the wireless sensor network is not lower than a certain value at the observation time. Through the example analysis, the constructed function can effectively e- valuate the reliability of the deployed wireless sensor network.