Abstract: In order to solve the problem that power supply of some relay nodes in underwater acoustic networks is exhausted earlier due to overuse, a new dynamic routing control method is presented.Lifetime of nodes is estimated from prediction of the generated message rate and the remaining power.The least lifetime among all nodes is defined as an objective function.The optimal routing with a maximum objective function value is found by using genetic algorithm, which attempts to achieve uniform consumption of the power.Simulation results show that the proposed method can prevent nodes with less lifetime from being heavily used, therefore effectively increasing their lifetime.

Key words: genetic algorithm, underwater acoustic networks, energy, routing