Fault-tolerance mechanism of random walk for underwater acoustic sensor networks based on dynamic behaviors

The energy of sensors is limited and the performance of Underwater Acoustic Sensor Networks(UASNs)descends by complex marine environment. These factors restrict promoting of application of UASNs into monitoring the marine environment and developing the marine resources. In order to solve the problems of the imbalance of data transmission load and low fault-tolerance of UASNs, the characterization of dynamic behaviors of data transmission of UASNs has been quantitatively curved. Some reasons of sensor nodes failure in complex marine environment have been analyzed.The evolution model of network based on cluster structure is established. A fault-tolerance mechanism of random walk is proposed. It would improve the fault-tolerance and extend the life cycle of UASNs. The simulation results verify the rationality and validity of the model. The research results show that the mechanism can reveal the general characterization of dynamic behaviors and the law of the UASNs.