A Mobility Model in 3-Dimensional PCS Indoor Environments (無線ネットワ-クの性能評価論文<特集>)  [in Japanese] A Mobility Model in 3-Dimensional PCS Indoor Environments  [in Japanese]

We need to solve various mobility problems in 1-dimensional, 2-dimensional, and 3-dimensional micro- or pico-cell environments for efficiently planning personal communications services. However, mobility problems have been thus far studied in 1- and 2-dimensional cell structures. In this paper, we extend the previous mobility modeling from 1- or 2-dimensional space to 3-dimensional indoor building environments by considering proper boundary conditions on each floor and analytically model the mobility in the multi-story buildings 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. These results can be utilized in the network plannings of future personal communications services.