RFID+: Spatially Controllable Identifcation of UHF RFIDs via Controlled Magnetic Fields

Donghui Dai, Zhenlin An*, Zheng Gong, Qingrui PAN, Lei Yang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

In the fast-paced landscape of UHF RFID technology, achieving precise spatial-selective identifcation is of critical importance in the logistics and retail domain. This work introduces RFID+, a magnetically-driven UHF RFID system that leverages the matching loops of commercial-off-the-shelf UHF RFID tags for effcient energy harvesting from tailored magnetic fields. The RFID+ delivers a level of spatial precision comparable to that of HF NFC systems, effectively mitigating issues of miss-reading and cross-reading. Our primary contributions reside in the development of a specialized multi-turn, capacitor-segmented coil antenna and an innovative fast inventory algorithm. The RFID+ seamlessly integrates traditional radiative coupling with the innovative magnetic coupling in UHF RFID systems, bolstering their overall performance and effciency. Real-world pilot studies in warehouses and logistics settings reveal that RFID+ significantly diminishes the miss-reading rate from 22.9% down to a remarkable 1.06%, while entirely eliminating cross-reading challenges. Moreover, our RFID+ variant demonstrates better resilience against materials traditionally challenging for UHF RFID, such as water bottles and containers. These advancements make RFID+ exceedingly relevant for practical applications in logistical networks.
Original languageEnglish
Title of host publicationProceedings of the 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)
Number of pages17
Publication statusAccepted/In press - 7 Dec 2023
Event21st USENIX Symposium on Networked Systems Design and Implementation - Santa Clara, United States
Duration: 16 Apr 202418 Apr 2024
Conference number: 21
https://www.usenix.org/conference/nsdi24/call-for-papers

Conference

Conference21st USENIX Symposium on Networked Systems Design and Implementation
Abbreviated titleNSDI '24
Country/TerritoryUnited States
CitySanta Clara
Period16/04/2418/04/24
Internet address

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