Page 251 - Integrated Wireless Propagation Models

M i c r o c e l l P r e d i c t i o n M o d e l s 229

prediction model is more or less circular. The difference in using either of the models
can make a big difference in dense urban areas when a low-height base station antenna
is served in a small cell.

4.3.2.3 Characteristics of Measured Data
Measurement data were collected from various countries/ cities and served for selected
applications of various frequencies, various transmitting antenna heights, and different
cell site parameters in a mobile communication environment. We must also consider
certain buildings that have unique shapes, and individual heights and widths, that
were built with various materials and different thickness.
The following configurations of drive routes were used to collect various measured
data as shown in Fig. 4.3.2.3 1 :
.
1 . Measurement under LOS (R1)
2. Zigzag kind of route (R2)
3. Staircase kind of route (R)
4. Random routes (R4)

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FIGURE 4.3.2.3.1 A sample of different routes on the street map.