3D maps have become widely used for planning in urban/dense urban areas, where urbanization is dense, including high-rise buildings. These maps accurately model each building, terrain, transportation network, etc.
With 5G NR, the frequencies are higher than ever. 3.6 GHz – 3.8 GHz, 26 GHz – 28 GHz, … At these frequencies, any obstacle between the transmitter and the receiver will have a huge impact on the signal propagation.
This means that even the trees are highly attenuating the signal (standard values around 1dB / meter at 26 GHz) and must be mapped in 3D.
Barcelona – 3D buildings and 3D trees: