Energy-Efficient Route Finding Scheme Based on Directional Antenna in Wireless Sensor Network

In this paper, an energy efficient route finding scheme is proposed based on the directional antenna for wireless sensor networks (WSNs). First we derive the relationship between the number of hops and the energy consumption within a certain source-destination distance by analyzing the major factor influencing the power consumption on wireless channels. Second, combined with the benefits from directional antennas, we propose an energy efficient routing scheme which selects the next hop according to the optimal route and geographic coordinates of sink and sensors. The simulation result shows the significant improvement by reducing the flooding cost, selecting an energy-efficient route and saving energy.