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无线传感器网络拓扑容错性的度量是拓扑容错性研究的基础和前提.考虑到拓扑连通性能与覆盖性能共同反映了网络监测质量,首先依据网络的可用性和有效性,给出了拓扑连通性与覆盖性的度量参数;然后利用网络连通及覆盖的综合服务需求提出了拓扑容错性的新测度——需求容错度;最后以仿真实验验证了该测度对随机、富富、穷穷不同节点失效策略下拓扑容错性的效果差异.结果表明,该测度能准确、有效地测度拓扑容错性的变化.
The measurement of topological fault tolerance of wireless sensor network is the foundation and premise of topological fault tolerance research.With the topological connectivity performance and coverage performance reflecting the network monitoring quality together, first of all, based on the availability and availability of the network, the topology connectivity and coverage Then the new measure of the fault tolerance of the topology is put forward, which is a new measure of the fault tolerance of the network by using the demand of the integrated services of network connectivity and coverage. Finally, a simulation experiment is carried out to verify the effectiveness of the measure against the failure of random, rich, poor and poor nodes The results show that this measure can accurately and effectively measure the change of topological fault tolerance.