Collaborative Filtering Based Aggregator Node Selection in Wireless Sensor Networks

In typical WSN, the sensor nodes have limited resources such as battery power, computing capability and memory. In order to achieve the equal usage of limited resources in the wireless sensor networks (WSNs), we must aggregate the sensor data before passing it to the base station. Careful selection of the aggregator nodes in the data aggregation process results in reducing large amounts of communication traffic in the WSN. In this paper, we propose a collaborative filtering based aggregator node selection method. The proposed method uses a recommendation function that calculates the attributes of sensor nodes, such as distance from the base station, power consumption, battery life and communication cost, and selects a set of leading aggregator nodes according to the recommendations made by neighboring sensor nodes.