Refraction vs diffraction vsreflection

hello, can i ask in wireless communication, what is the signal behavior of 28GHz in terms of refraction, diffraction, refraction and scattering?

Difference betweenrefractionanddiffractionof waves

Diffraction is caused by some sort of partial blockage such as a small hill or building that is between a transmitting radio and receiver.

As a wave radiates from an antenna, it broadens and disperses. If portions of the wave are reflected, new wave fronts appear from the reflection points.

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refraction, anddiffractionexamples

Occurs when a RF signal is being bent. This typically can happen as the RF signal passes through a medium with a different density, thus causing the direction of the wave to change.

Creates multipath, which can degrade the strength and quality of the received signal as well as cause data corruption or cancel signals.

When a wave hits a smooth object that is larger than the wave itself, depending on the media, the wave may bounce in another direction.

RF encounters some type of uneven surface and is reflected into multiple directions. The main signal dissipates into multiple reflected signals causing substantial signal downgrade and may cause loss of received signal.