We need to solve various mobility problems in 1-dimensional, 2-dimensional, and 3-dimensional micro- or pico-cell environments for efficient plannings of personal communications networks. However, mobility problems have been thus far studied in 1- and 2-dimensional cell environments.
In this paper, we extend the previous mobility modeling from 1or 2-dimensional space to 3-dimensional indoor building environments and analytically model the personal mobility to estimate the number of handoffs and then verify this mathematical model by computer simulations. The computer simulation results agree very well with the analytical ones. We also characterize the blocking probability in each cell according to the personal mobility by predicting the equivalent input traffic per cell. The computer simulation results are also close to the analytical ones. These results can be utilized in the network plannings of future personal communications networks.