Utilizing RF interference to enable private estimation in RFID systems

Lei Yang, Jinsong Han, Yong Qi, Cheng Wang, Zhuo Li, Qingsong Yao, Ying Chen, Xiao Zhong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Counting or estimating the number of tags is crucial for RFID system. Researchers have proposed several fast cardinality estimation schemes to estimate the quantity of a batch of tags within a short time frame. Existing estimation schemes scarcely consider the privacy issue. Without effective protection, the adversary can utilize the responding signals to estimate the number of tags as accurate as the valid reader. To address this issue, we propose a novel privacy-preserving estimation scheme, termed as MEAS, which provides an active RF countermeasure against the estimation from invalid readers. MEAS comprises of two components, an Estimation Interference Device (EID) and two well-designed Interference Blanking Estimators (IBE). EID is deployed with the tags to actively generate interfering signals, which introduce sufficiently large estimation errors to invalid or malicious readers. Using a secret interference factor shared with EID, a valid reader can perform accurate estimation via two IBEs. Our theoretical analysis and simulation results show the effectiveness of MEAS. Meanwhile, MEAS can also maintain a high estimation accuracy using IBEs.
Original languageEnglish
Title of host publicationProceedings - 16th International Conference on Parallel and Distributed Systems, ICPADS 2010
Pages83-90
Number of pages8
DOIs
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event16th IEEE International Conference on Parallel and Distributed Systems, ICPADS 2010 - Shanghai, China
Duration: 8 Dec 201010 Dec 2010

Conference

Conference16th IEEE International Conference on Parallel and Distributed Systems, ICPADS 2010
CountryChina
CityShanghai
Period8/12/1010/12/10

Keywords

  • Cardinality estimation
  • Entropy
  • Interference
  • Privacy
  • RFID

ASJC Scopus subject areas

  • Hardware and Architecture

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