RF-CHORD: Towards Deployable RFID Localization System for Logistics Network
Abstract
RFID localization is considered the key enabler of automating the process of inventory tracking and management for high-performance logistic network. A practical and deployable RFID localization system needs to meet reliability, throughput, and range requirements. This paper presents RF-Chord, the first RFID localization system that simultaneously meets all three requirements. RF-Chord features a one-shot multisine-constructed wideband design that can process RF signal with a 200 MHz bandwidth in real-time to facilitate one-shot localization at scale. In addition, multiple SINR enhancement techniques are designed for range extension. On top of that, a kernel-layer-based near-field localization framework and a multipath-suppression algorithm are proposed to reduce the 99% long-tail errors. Our empirical results show that RF-Chord can localize more than 180 tags 6 m away from a reader within 1 second and with 99% long-tail error of 0.786 m, achieving a 0% miss reading rate and ~0.01% cross-reading rate in the warehouse and fresh food delivery store deployment.
Cite
@article{arxiv.2211.00272,
title = {RF-CHORD: Towards Deployable RFID Localization System for Logistics Network},
author = {Bo Liang and Purui Wang and Renjie Zhao and Heyu Guo and Pengyu Zhang and Junchen Guo and Shunmin Zhu and Hongqiang Harry Liu and Xinyu Zhang and Chenren Xu},
journal= {arXiv preprint arXiv:2211.00272},
year = {2022}
}
Comments
To be published in NSDI 2023