QoS evaluation of square-grid topology in underwater acoustic sensor networks

Underwater sensor networks are gaining prominence in various applications of underwater monitoring and resource explorations. The minimum energy routing algorithms [2] are implemented in underwater oil resource explorations. The topologies already in use are wired where all sensor nodes behave as coordinator, except the PAN coordinator. This may increase the depletion of battery energy, and cost of network deployment. This paper evaluates QoS of square-grid topology with four different orientations of sensor nodes. The result will aid in selecting a particular orientation based on application requirements. The results indicate the variation in performance parameters like throughput, end-to-end delay, and network lifetime according to different orientations of the sensor nodes.