Light-weight depth-based routing for underwater wireless sensor network

Underwater wireless sensor networks often employ acoustic channels for communications because radio signals do not work well in water. UWSNs usually have very dynamic topology as sensors moves passively with water current. Some routing protocols have been proposed to the challenging problem in UWSNs. In UWSNs, efficient utilization of energy is one of the major issues. In DBR, routing is based on the depth of the sensor nodes. The nodes having less depth are used as a forward node and consume more energy as compare to the rest of the nodes. In this paper, we propose a light-weight depth-based routing protocol (LDBR). In LDBR, residual energy based approach is used to minimize the energy consumption. Extensive simulations have been designed and conducted to evaluate the proposed method. The results show that the LDBR consumes less energy as compare to its predecessor DBR.