Study of Reliability Redundancy Design of Underwater Sensor Networks

It is very important to prolong network's lifetime and increase reliability in USN,redundancy design could prolong network's lifetime and increase reliability.This paper proposes the redundancy design for USN based on reliability theory.It takes vertically moving leash of USN sensors and renovating periods leash into account and based on the studying the redundant unshared scheme.At the same time,The redundant share scheme was proposed.And the reliability model is also proposed.The relationship between the number of redundant sensors and network lifetime is researched by a typical calculation,The simulation results of matlab simulation shows that redundancy share scheme need fewer redundancy sensors and could achieve the effect of prolonging network's lifetime and increasing reliability.