Adaptive In-building Propagation Simulator using ray tracing in WCDMA networks

In this paper, we describe an Adaptive In-building Propagation Simulator (AIPS) to predict wireless service coverage within buildings for WCDMA networks. The adaptive propagation model was proposed and applied on AIPS. The model provides analysis of the visualized coverage and the received signal strength of the MS (Mobile Station) inside the building by designing the specific location of the transmitter, material of the wall and antenna etc as a construction within building. The performance of this AIPS is investigated by comparing the simulation results with the actual measurements on a location-by-location basis in a building which WCDMA repeaters are operating commercially in KTF, the number 1 WCDMA service provider in Korea. The result shows that the AIPS predicts service coverage on the real access network with a standard deviation of about 5dB over 53 locations in several buildings. The AIPS with the proposed propagation model is widely using to plan the service coverage within a building in KTF WCDMA networks.