Performance of handoff algorithm based on distance and RSSI measurements

Ken Ichi Itoh, Soichi Watanabe, Jen Shew Shih, Takuro Sato

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

The performance of a proposed handoff algorithm based on both the distance of a mobile station to neighboring base stations and the relative signal strength measurements is evaluated. The algorithm performs handoff when the measured distance from the serving base station exceeds that from the candidate base station by a given threshold and if the measured signal strength of the adjacent base station exceeds that of the serving base station by a given hysteresis level. The average handoff delay and average number of handoffs are used as criteria for performance. Numerical results are presented to demonstrate the feasibility of the distance-based handoff algorithm, including results for an additional criterion based on relative signal strength. The proposed algorithm is compared with an algorithm based on absolute and relative signal strength measurements and with a solely distance-based algorithm. It is found that the proposed handoff algorithm performs well in a log-normal fading environment when the distance estimate error is modeled by wide-sense stationary additive white Gaussian noise.

Original languageEnglish
Pages (from-to)1460-1468
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Volume51
Issue number6
DOIs
Publication statusPublished - 2002 Nov 1

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Keywords

  • Distance measurement
  • Handoff
  • Log-normal fading
  • RSSI measurement
  • Wide-sense stationary additive white Gaussian noise

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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