All Statistics in Overture can be calculated with respect to a Baseline, which is a previous run of the statistic that is cached for future comparison. This allows you to easily make before-and-after comparisons of your KPIs when you make a configuration change to your network.

This tutorial shows you how to set up and use baselines in statistics. We will start by assuming that the steps in the Tutorial have been followed.

Having set up our network, we now need to establish the baseline for our statistics. To do this, we need to locate the "Statistics" sub section of the Start Page. You can reach this by first clicking on Analysis:

Then click on Statistics:

This will show you the statistics sub page:

Make sure the "Coverage By Site" statistic is selected in the combo box, then click on the Calculate button to see the table of results:

We will now set this to be the baseline, so we can easily compare results for different network configurations. We do this by clicking the Set Baseline button. This caches a copy of the results for later.

Now we need to make a network configuration change. We will do this by opening the Sector Table, by clicking on the Open Sector Table button () on the Toolbar:

This opens the sector table:

Right-click on sector table to open the context menu and choose Select All, as above. The properties of all the sectors are then displayed in the Properties Window:

We will now apply a network configuration change. For the purposes of this tutorial, we will give every sector a 4 degree down tilt. To do this, select the Downtilt property and then choose "4.00" from the pull-down list. For more information about sectors and their properties, see the description here.

If you now return to the Sector Table, you should find that all sectors have a 4 degree down tilt:

We can now rerun the "Coverage by Site" statistic to see the effects of the downtilt on the network. Go back to the "Statistics" section of the Start Page, and then click the Compare to Baseline button. A new table with the comparison appears:

This table shows that applying 4 degrees of down tilt to every site causes the network to serve significantly less subscribers and cover significantly less area.