Mobile-multi Sink Routing Protocol For Underwater Sensor Networks

Wireless Sensor Network(WSN)is widely applied in ocean development and monitoring.Multiple Autonomous Underwater Vehicles(AUVs)are assigned to gather data from underwater sensor nodes.However,energy restriction,low available bandwidth and low transmission rate are major challenges in Underwater Wireless Sensor Networks(UWSNs)routing protocol.Meanwhile,the mobility and multiplicity of AUV bring less network reliability.A Mobile-MultiSink(MMS)routing protocol is proposed for UWSNs with multiple mobile sink nodes.There are two phases in this protocol.In layer building phase,each layering structure is presented wherein nodes occupy different layers in the form of concentric shells,around each sink node.Owing to the mobility of sink nodes,the network becomes unreliable.So the layered structures need to be rebuilt regularly.The condition to rebuild layered structures is chosen taking into consideration the probability of successful packet transmission.In second phase,the intermediate relayed nodes are selected to forward data to destination sink node.It contains the selection of destination sink node and selection of relayed nodes.Each node uses both two strategies in order to transmit data efficiently and reliably.This paper demonstrates the performance of MMS routing protocol using networks simulator-3(NS-3).Our findings show that the proposed protocol has considerably better reliability and energy consumption with higher Packet Delivery Rate(PDR)comparing with current UWSNs routing protocol.