Positioning in DECT-2020 NR with Proactive Measurement Selection

Abstract

This paper addresses efficient positioning and user device tracking in Internet-of- Things (IoT) networks with par-ticular focus on the new DECT-2020 New Radio standard - the first non-cellular 5G technology standard in the world. Stemming from fundamental performance requirements of IoT networks, for example, related to energy consumption, latency, and reliability, it is important to utilize available radio resources efficiently, while avoiding redundant transmissions and signaling. In this paper, we propose a tracking-based positioning solution with a proactive measurement selection, in which positioning measurements are selected based on Fisher information. The proposed method, accompanied with computationally attractive processing solution, is able to sort and select potential positioning measurements based on achievable minimum positioning error. The provided numerical results, considering both range and angle measurements, show that the proposed method outperforms the traditional signal-to-noise ratio based measurement selection approach, and enables positioning with a smaller number of measurements.