A power-controlled depth-based routing protocol for underwater wireless sensor networks

Abstract

An energy efficiency routing protocol based on Depth-Based Routing (DBR) protocol for data collection scene is proposed. Protocol utilizes probe packet to calculate the difference between the minimum signal-to-noise ratio (SNR) required to correctly receive a packet and actual SNR of received request, and then adjust transmission power to send a large amount of data. Hence, the energy of sender can be saved. Simulation shows that the energy efficiency of the protocol can be improved about 20% compared to DBR.