Fast RFID Polling Protocols

Jia Liu, Bin Xiao, Xuan Liu, Lijun Chen

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

17 Citations (Scopus)


Polling is a widely used anti-collision protocol that interrogates RFID tags in a request-response way. In conventional polling, the reader needs to broadcast 96-bit tag IDs to separate each tag from others, leading to long interrogation delay. This paper takes the first step to design fast polling protocols by shortening the polling vector. We first propose an efficient Hash Polling Protocol (HPP) that uses hash indices rather than tag IDs as the polling vector to query each tag. The length of the polling vector is dropped from 96 bits to no more than log(n) bits (n is the number of tags). We then enhance HPP (EHPP) to make it not only more efficient but also more steady with respect to the number of tags. To avoid redundant transmissions in both HPP and EHPP, we finally propose a Tree-based Polling Protocol (TPP) that reserves the invariant portion of the polling vector while updates only the discrepancy by constructing and broadcasting a polling tree. Theoretical analysis shows that the average length of the polling vector in TPP levels off at only 3.44, 28 times less than 96-bit tag IDs. We also apply our protocols to collect tag information and simulation results demonstrate that our best protocol TPP outperforms the state-of-the-art information collection protocol.
Original languageEnglish
Title of host publicationProceedings - 45th International Conference on Parallel Processing, ICPP 2016
Number of pages10
ISBN (Electronic)9781509028238
Publication statusPublished - 21 Sept 2016
Event45th International Conference on Parallel Processing, ICPP 2016 - Philadelphia, United States
Duration: 16 Aug 201619 Aug 2016


Conference45th International Conference on Parallel Processing, ICPP 2016
Country/TerritoryUnited States


  • Information collection
  • Polling
  • RFID

ASJC Scopus subject areas

  • Software
  • General Mathematics
  • Hardware and Architecture


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