RFID estimation—design and optimization

RFID estimation—design and optimization

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The key technical novelty of this chapter is in proposing the new estimator, the average run size of 1s, for estimating RFID tag population size of arbitrarily large sizes. Using analytical plots, we show that our estimator has much smaller variance compared to other estimators including those used in prior work. It is this smaller variance that makes our scheme faster than the previous ones. The key technical depth of this chapter is in the mathematical development of the estimation theory using this estimator. ART can estimate arbitrarily large tag populations with arbitrarily high accuracy. It works with single as well as multiple readers. Our experimental results show that ART is significantly faster than all prior RFID estimation schemes. We have shown, both theoretically and experimentally, that the estimation time of ART is independent of the tag population size.

Chapter Contents:

  • 3.1 Introduction
  • 3.1.1 Motivation and problem statement
  • 3.1.2 Proposed approach
  • 3.1.3 Advantages of ART over prior art
  • 3.2 Related work
  • 3.3 ART—scheme overview
  • 3.3.1 Communication protocol overview
  • 3.3.2 Estimation scheme overview
  • 3.3.3 Formal development: overview and assumptions
  • 3.4 ART—estimation algorithm
  • 3.5 ART—parameter tuning
  • 3.5.1 Persistence probability p
  • 3.5.2 Number of rounds n
  • 3.5.3 Optimal frame size f
  • 3.5.4 Obtaining population upper bound tm
  • 3.6 ART—practical considerations
  • 3.6.1 Unbounded tag population size
  • 3.6.2 ART with multiple readers
  • 3.7 ART—analysis
  • 3.7.1 Independence of estimation time from tag population size
  • 3.7.2 Computational complexity
  • 3.7.3 Analytical comparison of estimators
  • 3.8 Performance evaluation
  • 3.8.1 Estimation time
  • 3.8.2 Actual reliability
  • 3.9 Conclusion

Inspec keywords: estimation theory; radiofrequency identification; optimisation

Other keywords: RFID design; estimation theory; RFID tag population size estimation; average run-based tag estimation; RFID optimization; ART

Subjects: RFID systems; Other topics in statistics; Optimisation techniques

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