The following figure shows a part of a large city, where a LTE radio network shall be installed. 25 possible locations and configurations for transmitters are known and depicted in the figure. The target is to provide a data rate of 100 kBit/s for 90 percent of the area, outdoor as well as indoor, with a minimum number of transmitters / cells.

Figure 1. LTE-network with all possible cells.

Based on the shown radio network planning project (see Figure 1), an optimization project can be started in OptMan. As depicted in Figure 2, the optimization target is specified according to the given requirements. Besides the threshold definition, the minimum cell area a single site shall cover is defined to be four percent of the overall simulation area.

During the simulation, the optimization chart (see Figure 3) displays the performance increase resulting from adding transmitters/cells. Each percentage increase means, that a new transmitter/cell was added to the network. If there is no increase between two simulation runs (for example, between run 4 and run 5 in Figure 3), the tested transmitter/cell was discarded.

The optimization diagram in Figure 3 shows that 11 out of 25 transmitters / cells have been selected to setup the radio network, which fulfills the specified targets best. Using these 11 transmitters, almost 90 percent of the defined target values can be reached. The selected subset of transmitters/cells is depicted in Figure 4.

Figure 2. Graphical User Interface of OptMan.

Figure 3. Optimization chart.

Figure 4. Resulting configuration after optimization.