Node-failure Tolerance of Topology in Wireless Sensor Networks
Liangmin Wang, Jianfeng Ma, Yuanbo Guo · 2008
Abstract: Three basic questions are presented and answered in researching on node-failure topology in wireless sensor network. First, what is the definition of node-failure tolerance? Second, how to evaluate this tolerance ability? Third, which type of topologies is more efficient in tolerating node-failure? Introduction: Wireless sensor networks usually were deployed in remote and hostile surroundings, and people cannot attend the sensor nodes. When some nodes are failure, such as batteries exhausted, hardware faulted and intrusion from attackers, these unattended nodes cannot be changed or repaired. The failure nodes may lead to network partition which decreases the cover ratio,