Illustrating an Efficient 3-D Ray Tracing Method for Prediction of Indoor Radio Propagation at 28 GHz in 5G Network

Millimeter wave technology will be dominating the fifth generation networks due to the clear
advantage of higher frequency bands and hence wider spectrum. In this paper, the indoor radio wave
propagation at 28 GHz is studied by developing an efficient three-dimensional ray tracing (ETRT)
method. The simulation software based on the ETRT model has been verified by measurement data.
The received signal strength indication and path loss have shown significant agreement between
simulation and measurement. Comparing with the conventional shooting bouncing ray tracing method,
the proposed ETRT method has better agreement with measurement data. Based on the
comprehensive comparison, acceptable agreement is found for the proposed method. The results of
this research is expected to guide further research into 28 GHz mmWave indoor mobile networks
systems.