The research of routing algorithm based on density control for underwater acoustic sensor networks

In order to overcome high pass loss and energy consumption problems in underwater acoustic sensor network (UWASN), on the basis of the GEAR routing protocol, a density control based on geographical and energy aware routing (D-GEAR) strategy is proposed. Before the source node forwards query messages, by using density control algorithm based on probability coverage model to adjust the area node-density. It can set a sleep timer for the redundant sensor nodes to reduce total network energy consumption and ensure adequate network coverage ability. Simulation results show that by setting a reasonable radius can effectively prolong the network lifetime.