High-Efficient Ranging Algorithms for Wireless Sensor Network

Zijian Zhang, Hanying Zhao, Yuan Shen
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引用次数: 5

Abstract

Obtaining precise internode range information with high-efficiency is essential for the Internet of Things. Two-way ranging (TWR) algorithm and its variants are widely used for measuring time-of-flight (ToF) among wireless transceivers. However, these algorithms are inefficient for large-scale networks, due to high resource consumption and long latency. In this paper, for active nodes and passive nodes, we propose the network-based TWR (NB-TWR) and the network-based passive ranging (NB-PR) algorithms, respectively, which realize all internode ToFs measuring with the minimum frames. Through theoretical analysis, we show that the ranging errors of the proposed methods are much lower than those of traditional algorithms. Our results can serve as guidelines for wireless networks to realize network ranging with high precision and limited resource consumption.
无线传感器网络的高效测距算法
准确、高效地获取节点间距离信息是物联网的关键。双向测距(TWR)算法及其变体被广泛用于无线收发器间飞行时间(ToF)的测量。然而,由于资源消耗高,延迟长,这些算法在大规模网络中效率低下。本文针对主动节点和被动节点,分别提出了基于网络的TWR (NB-TWR)和基于网络的被动测距(NB-PR)算法,以最小帧数实现所有节点间的tof测量。理论分析表明,该方法的测距误差远低于传统算法。研究结果可为无线网络实现高精度、低资源消耗的网络测距提供指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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