Dear Oscar,
That is only to give you an idea what is being generated when during a simulation. If you are using the 3D model, you can notice when the desired channel is generated ‘UE 1:’, and the interfering channels as ‘1,2, … N’. The number of interfering base stations is limitted by a threshold applied, so if there are less interferers, you will see the corresponding number of interfering channels generated.
Best,
Fjolla