7.5.5 Base station Figure 184: Cellular system – Base station GUI     Table 25: Cellular system – Base station parameters Description Symbol Type Unit Comments Antenna height H BS Distribution or Scalar m Distribution used to determine height of BS . Note that the assumed antenna height definition (above ground, above local clutter, effective antenna height) should correspond to the selected propagation model Antenna tilt - Distribution or Scalar degree Equivalent to a physical tilt of an antenna on a mast, (-) sign is a downtilt, (+) sign is an uptilt. See ‎ ANNEX 11: for further details and illustration. Antenna pattern - Library - See Section ‎ 5.2.3