Enhanced blocking probability evaluation method for circuit-switched trunk reservation networks

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)543-545
Journal / PublicationIEEE Communications Letters
Issue number6
Publication statusPublished - Jun 2007


We consider the problem of estimating steady-state blocking probability for circuit-switched networks that allow alternate routing with particular emphasis on networks protected by trunk reservation. We use a recently proposed blocking probability estimate, the Overflow Priority Classification Approximation (OPCA) as an alternative to the currently used Erlang's Fixed-Point Approximation (EFPA). We demonstrate empirically that OPCA provides a better blocking estimate than EFPA for circuit-switched networks with alternate routing, that are reasonably protected by trunk reservation. © 2007 IEEE.

Research Area(s)

  • Blocking probability, Circuit switching, Erlang's fixed point approximation, Network design