Distributed Fault-Tolerant Backup-Placement in Overloaded Wireless Sensor Networks

Considering their independent and environmentally-varied work-fashion, one of the most important factors in WSN applications is fault-tolerance. Due to the fact that the possibilities of an absent sensor node, damaged communication link or missing data are unavoidable in wireless sensor networks, fault-tolerance becomes a key-issue. Among the causes of these constant failures are environmental factors, battery exhaustion, damaged communications links, data collision, wear-out of memory and storage units and overloaded sensors.