Computing call-blocking probabilities in LEO satellite constellations

Abdul Halim Zaim*, Harry G. Perros, George N. Rouskas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We present an analytical model for computing call-blocking probabilities in a low earth orbit (LEO) satellite network that carriers voice calls. Both satellite- and earth-fixed constellations with interorbit links and handoffs are considered. In this model, we assume a single beam per satellite. Also, we assume that call arrivals are Poisson with a fixed arrival rate that is independent of the geographic area. The model is analyzed approximately by decomposing it into subsystems. Each subsystem is solved in isolation exactly using a Markov process and the individual results are combined together through an iterative method. Numerical results demonstrate that our method is accurate for a wide range of traffic patterns. We also derive an upper and lower bound for the link-blocking probabilities that can be computed efficiently. These bounds can be used for constellations of realistic size where each satellite has multiple beams.

Original languageEnglish
Pages (from-to)622-636
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Volume52
Issue number3
DOIs
Publication statusPublished - May 2003
Externally publishedYes

Keywords

  • Call blocking
  • Handoffs
  • Low earth orbit (LEO) satellite constellations

Fingerprint

Dive into the research topics of 'Computing call-blocking probabilities in LEO satellite constellations'. Together they form a unique fingerprint.

Cite this