Efficient estimation of call blocking probabilities in cellularmobile telephony networks with customer retrials

摘要

A novel approximate technique is proposed for the estimation ofncall blocking probabilities in cellular mobile telephony networks wherencall blocking triggers customer retrials. The approximate analysisntechnique is based on Markovian models with state spaces whosencardinalities are proportional to the maximum number of calls that cannbe simultaneously in progress within cells. The accuracy of thenapproximate technique is assessed by comparison against results ofndetailed simulation experiments, results of a previously proposednMarkovian analysis approach, and upper and lower bounds to the callnblocking probability. Numerical results show that the proposednapproximate technique is very accurate, in spite of the remarkably smallnstate spaces of the Markovian models