Why use Beamforming?
Beamforming concepts
- Need to compensate very high losses at higher frequencies.
- Use a wider number of Tx/Rx antennas (radiating elements).
- The width of the beam is narrower as the number of antennas increases:
- All the power is conformed (transmitted) in a certain direction.
Beamforming Correspondence (FR12 Only)
Beam correspondence (BC) between gNB and UE is the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping
Beamforming Management
- The network and device will use beamformingantennas (maybe as low as 12 degrees)
- Narrow beams increase the received power(signal-to-noise) level
- Beams to different UEs can re-use the same time and frequency resources
- All common and dedicated channels are transmitted (and received) over beams
- Beams are bilateral for (t, f, (x,y,z)) – TDD operation only
Resource : Keysight