Performance improvement of generation-2 RFID protocol

Chonggang Wang, Mahmoud Daneshmand, Kazem Sohraby, Bo Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Radio frequency identification (RFID) provides a non-lineof- sight and contactless approach for object identification. But if there are multiple tags in the range of an RFID reader, tag collision can take place due to radio signal interference and therefore an anti-collision algorithm is required to resolve collisions. Recently, EPCglobal RFID generation-2 (Gen-2) protocol [1] is proposed for ultrahigh frequency (UHF) passive tags and is being deployed. Gen-2 designs a slotted random anti-collision algorithm, especially, an adaptive slot-counter (Q) selection algorithm. The integer-valued parameter Q in Gen-2 plays a critical role in tag collision resolution. This adaptive algorithm dynamically adjusts the value of Q based on the type of replies from tags. In this paper, we propose an optimal Q algorithm that determines the optimal values of Q according to the number of remaining tags and in turn to optimize tag identification speed (TIS). It's been demonstrated through extensive simulations that the proposed algorithm achieves higher TIS than Gen-2 adaptive Q algorithm.

Original languageEnglish
Title of host publicationQShine 2008 - 5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness
EditorsJiannong Cao, Lionel Ni
ISBN (Electronic)9789639799264
DOIs
StatePublished - 2008
Event5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2008 - Hong Kong, Hong Kong
Duration: 28 Jul 200831 Jul 2008

Publication series

NameQShine 2008 - 5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness

Conference

Conference5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2008
Country/TerritoryHong Kong
CityHong Kong
Period28/07/0831/07/08

Keywords

  • Air interface
  • Generation-2 RFID
  • Performance analysis
  • Radio frequency identification
  • Tag identification speed

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