High Precision Distance Vector Hop Localization Algorithm for Wireless Sensor Networks

Abstract

Internet of Things (IoT) systems require localization for the nodes within Wireless Sensor Networks (WSNs) for many location-based services. Since thousands of sensor nodes would exist in some networks, having GPS on each node is impractical, not merely due to the hardware cost, but also because of the poor performance indoors. Localization is now recognized as a crucial area for study. The research presented in this paper puts forward a half-measure weighted centroid DV-Hop localization algorithm. The proposed algorithm adjusts the locations of unknown nodes using redundant information obtained from localization equations. Simulation of sensor networks resulted in significant improvements in accuracy and lower error rates in localization estimation, while maintaining low hardware and computational costs.

Keywords: DV-Hop, WSN, IoT, localization