Beamforming
Beamforming is a type of radio frequency (RF) management in which a wireless signal is directed toward a specific receiving device. → Literally point a beam into a UE so that they get signal, that’s how wireless works!
Better beamforming = increased spectral efficiency
Two types of Beamforming:
-
Analog Beamforming (ABF)
- One beam at a time
- FDM of different directions not possible
- Less complex implementation
- Typically used at mm-wave
-
Digital Beamforming (DBF)
- Multiple beams at a time
- FDM of different directions possible
- More complex implementation
- Currently mainly at low/mid bands
You need to understand all of these terminologies.
These are concepts I want to understand:
- Beam Measurement
- Beam Selection
- Beam Sweeping
- transmits the beams in all predefined directions in a burst in a regular interval. Find the best Synchronization Signal Block (SSB) blocks
- Beam Refinement
- Beam Switching
- Beam Recovering
- Beam Tracking
- Beam Correspondance