DMCHS: An energy-accuracy tradeoff scheme for HetNet-based indoor localization framework

Energy-efficiency and location accuracy are two important performance metrics for indoor localization systems. However, typical indoor localization schemes based on WLAN cut gravely down smart device lifetime due to large energy consumption of scanning around wireless access points. In this paper, for the purpose of decreasing the amount of energy consumption while guaranteeing localization accuracy, a novel indoor localization framework based on heterogeneous network (HetNet) by fusing WLAN and WPAN under group-based mobility mode is proposed, whose localization method is relied on the fusion of fingerprint matching and trilateration. Moreover, we develop a novel energy-accuracy tradeoff scheme including objects clustering and dynamic multiple cluster header smart devices selection scheme during the localization process based on the proposed HetNet-based indoor localization framework. Simulation results indicate that the proposed scheme extends the smart device lifetime, maintains the fairness of smart devices and provides a well-balanced energy consumption and location accuracy compared to a previous proposed scheme, namely, LEACH scheme.