A novel technique for any-cast transmission scheduling in underwater acoustic sensor networks

Underwater Sensor Networks have been proposed to monitor underwater regions. One of the major problems with underwater communication is the limited power supply of the underwater nodes, leading to costly transmission collisions. In this work, we propose an any-cast transmission scheduling algorithm for Underwater networks. Moreover, we propose a location-based algorithm that schedules transmissions between sensor nodes and sink nodes, where each sensor node is matched with exactly one sink and it sends its data to this sink only to minimize the possibility of collision. This reduces the number of costly re-transmissions and leads to efficient energy consumption. The proposed algorithm is evaluated using NS2 Aqua-Sim simulator, where the experiment results show that the proposed algorithm can provide up to 25% in energy savings, decrease the transmission collisions up to 31%, decrease the average delay up to 16%, and increase the delivery ratio up to 40% compared with a simple greedy algorithm.