Research In Motion
In recent years, there has been a growing attention in wireless sensor networks. In Wireless Sensor Networks (WSNs), collecting sensed information, transforming the information data to the base station in an energy efficient way, and lengthening the network lifetime are main issues. Sensor nodes in WSNs are energy constrained. So, one of the major design challenges in WSNs is minimizing consumed energy at the sensor nodes. Therefore, a number of routing schemes are designed that make efficient usage of limited energy of the sensor nodes. Hierarchical routing protocols are best known in regard to energy efficiency.