Effects of self-similarity in cell dwell time of mobile terminals on teletraffic characteristics of cellular communication networks

摘要

In order to evaluate the teletraffic in cellular networks, we have measured the motion of mobile platforms and estimated cell dwell time by overlaying hypothetical cells on the measured loci. As a result, the cell dwell time of taxis does not follow an exponential distribution as had previously been presumed, but is, in fact, well described by a log-normal distribution. And furthermore, we found that the cell dwell time data exhibit self-similarity. In this paper, we evaluated the effects of self-similarity in cell dwell time of mobile terminals on teletraffic characteristics by computer simulations. The stronger self-similarity in cell dwell time results in higher new call blocking rate and hand-off call blocking rate.