Establishment of reference localization system based on boundary recognition of wireless sensor network

Abstract

Understanding the energy consumption of individual tasks in wireless sensor networks (WSN) is an important aspect for a network deployment. The fundamental task of WSNs is to gather data in the long-term manner. All additive processes such as routing and localization should not significantly affect the life time of the WSN. It was already proved that concurrent anchor free localization algorithms have great localization accuracy but also suffer from the high communication cost. We have performed a detailed analysis of a well-known AFL (Anchor-Free Localization) algorithm to show its excessive energy dissipation. We have proposed a novel BRL (Boundary Recognition aided localization) that significantly optimizes a communication cost of the selection of the reference nodes which are used for subsequent nodes localization. The main idea of the algorithm is to successfully identify the nodes lying on the boundary. Only these nodes subsequently cooperate in the reference nodes selection process and thus decrease the energy load of the network.