WCDMA Network Performance in Variable Repeater Hotspot Traffic Cases

The target of the paper is to illustrate the impact of hotspot traffic distributions on the WCDMA network performance when repeaters are used for providing service to the hotspot users. The paper concentrates on providing a detailed system- and cell-level analysis of the impact of repeaters by using static Monte Carlo simulations. Moreover, the effects of different repeater configurations are presented. Simulations were made by using different repeater gains, different hotspot traffic densities, and two different repeater distances to find out a planning guideline for WCDMA repeaters. The results show that the optimum repeater gain does not depend on the amount of traffic in hotspots, but mainly on the repeater configuration, and on the distance from the mother cell. Moreover, cell-level analysis reveals that repeaters have remarkable effect on the interference levels in cells surrounding the repeater cells. The results also show, how the downlink capacity can considerably be improved by using repeaters.