Active Set Size Effects at HSUPA in WCDMA Systems

Abstract

WCDMA cellular networks support soft handover, which guarantees the continuity of wireless services and enhanced communication quality. Cellular networks performance depends upon Soft handover parameters. In this paper, we have shown the effect of soft handover parameters on the performance of WCDMA cellular networks. We consider timeToTrigger1a, timeToTrigger1b, timeToTrigger1c and maxactivesize as the Soft handover parameters. A very useful statistical measure for characterizing the performance of WCDMA cellular system is the mean active set size and soft handover region. It is shown through numerical results that above parameters have decisive effect on HSUPA, mean active set size and soft handover region and hence on the overall performance of the soft handover algorithm.